WorldWideScience

Sample records for nazarenko peeter ross

  1. Peeter Simm kolmandat korda teatris

    Index Scriptorium Estoniae

    2001-01-01

    Rakveres tuli lavale Toomas Raudami ja Peeter Simmi näidend Lõuna-Eesti kinomehaaniku Mati Parkja elust "Kino-Mati. Tema elutee ja juhtumised, mis seal ette tulid". Lavastas Peeter Simm, nimiosas Erik Ruus, kunstnik Hardi Volmer

  2. Peeter Kreitzberg : reeturlik Rahvaliit ootas kerget saaki / Peeter Kreitzberg

    Index Scriptorium Estoniae

    Kreitzberg, Peeter, 1948-2011

    2001-01-01

    Keskerakonna presidendikandidaat Peeter Kreitzberg peab leppest taganenud rahvaliitlasi reeturiteks, tunnistades samas, et riigipea valimiste voorudes Riigikogus võis kaduma minna ka Keskerakonna hääli

  3. Alf Ross

    DEFF Research Database (Denmark)

    Ryberg, Jesper

    En (overvejende) ny generation af akademikere møder og prøver Ross' tanker om emner som retfærdighed, demokrati, statsforfatningsret, ytringsfrihed, straf, erkendelsesteori, etik, logik, fri vilje og sygdom....

  4. Peeter Tooming (1939-1997) : polüskoopiline tagasivaade / Peeter Linnap

    Index Scriptorium Estoniae

    Linnap, Peeter, 1960-

    2012-01-01

    Peeter Toominga loomingust (visuaalne-modernistlik liin, kontseptuaalne fotograafia, telesaated, ringvaated, fotofilmid). Carl Sarapi 1937. a. ja Peeter Toominga 1987. a. pildistatud fotodest (projekt "50 aastat hiljem")

  5. Pilguheit kunsti tagatubadesse / Peeter Ora

    Index Scriptorium Estoniae

    Ora, Peeter

    2004-01-01

    Üliõpilastööde näitusest "Avatud ateljee" Tartu Ülikooli kunstide osakonnas. Kuraatorid 3. kursuse tudengid Irina Krivonogova ja Peeter Ora. Kommenteerinud Jaan Elken, Anne Parmasto, Margus Kiis

  6. Rossing update

    International Nuclear Information System (INIS)

    Griebel, E.G.

    2000-01-01

    Rossing Uranium, along with the rest of the industry, has been undergoing major changes to adjust to the increasingly competitive uranium market in the 1990's. This paper will outline the developments during the 1990's at the mine, as well as current projects. Rossing has successfully managed the transition through a phase of very low production in the first half of the 1990's, and is now operating at 70% of capacity. During this phase the mine was also able to implement tailings and water management strategies which have reduced fresh water requirements to historical lows, whilst preserving process performance despite cessation of iron oxide supplies. Capital investment in mining equipment, a pre-screening facility in the Fine Crushing plant, and currently an ore sorting pilot plant have been made to enhance Rossing's ability to lower costs further. Rossing is in the middle of a business improvement programme aimed at cutting unit costs in excess of 20%, whilst continuing to improve safety, health and environmental performance. Key focus areas of this programme are maintenance strategy, equipment and plant utilisation and people development. (author)

  7. Marc Ross

    Indian Academy of Sciences (India)

    Marc Ross. Articles written in Pramana – Journal of Physics. Volume 69 Issue 6 December 2007 pp 1147-1150 Machine Detector Interface. A laser-wire system for the International Linear Collider · Nicolas Delerue Sudhir Dixit Fred Gannaway David Howell Myriam Qurshi Grahame Blair Stewart Boogert Gary Boorman ...

  8. Tule tagasi, Peeter! / Jaan Ruus

    Index Scriptorium Estoniae

    Ruus, Jaan, 1938-2017

    2006-01-01

    Eesti-Saksa koostööfilm "Kõrini" : režissöör Peeter Simm : operaator Rein Kotov : helilooja Sven Grünberg : osades Maarja Jakobson, Rasmus Kaljujärv, Heio von Stetten, Thomas Schmauser : Ruut Pictures (Eesti) - Saxonia Film (Saksa) 2005

  9. Peeter Tooming (1939-1997) : polüskoopiline tagasivaade / Peeter Linnap

    Index Scriptorium Estoniae

    Linnap, Peeter, 1960-

    2009-01-01

    Eesti foto ajaloost. Peeter Toominga loomingust (visuaalne-modernistlik liin, kontseptuaalne fotograafia, telesaated, ringvaated, fotofilmid). Carl Sarapi 1937. aastal ja Peeter Toominga 1987. aastal pildistatud fotodest (projekt "50 aastat hiljem")

  10. Ross og demokratiet

    DEFF Research Database (Denmark)

    Svensson, Palle

    2006-01-01

    En kritisk analyse af Alf Ross' teori om demokrati på grundlag af Roberty A. Dahl's begrebsapparat.......En kritisk analyse af Alf Ross' teori om demokrati på grundlag af Roberty A. Dahl's begrebsapparat....

  11. Ross - for altid?

    DEFF Research Database (Denmark)

    Blume, Peter Erik

    2011-01-01

    Med baggrund i Jens Ewalds bog om Alf Ross omtaler artiklen en række de problemstillinger, som bogen behandler, samt vurderer den betydning, Ross har haft og måske fortsat har. Afslutningsvis betones den juridiske biografis betydning.......Med baggrund i Jens Ewalds bog om Alf Ross omtaler artiklen en række de problemstillinger, som bogen behandler, samt vurderer den betydning, Ross har haft og måske fortsat har. Afslutningsvis betones den juridiske biografis betydning....

  12. Aedniku uut moodi aasta / Peeter Laurits

    Index Scriptorium Estoniae

    Laurits, Peeter, 1962-

    2008-01-01

    2008. a. kirjastuselt Maalehe Raamat ilmunud Karel Capeki raamatu "Aedniku aasta" kujunduspõhimõtetest. Kujundajad: Peeter Laurits, Tiina Ubar. Korrektuur: Leelo Laurits. Samas: Siim, Signe "Raamatu taassünnilugu", Mettik, Jaan "Unuma kippuva taastulek"

  13. Peeter Allik, Urmas Viik jt Londonis

    Index Scriptorium Estoniae

    2006-01-01

    Eesti, Läti ja Leedu graafikute näitus "Power and Man. Three Countries. One Exhibition" galeriis Novas Gallery. Eestist osalevad Peeter Allik, Urmas Viik, Jaak Visnap, Kadri Alesmaa, Aili Vahtrapuu, Inga Heamägi

  14. Peeter Põld karsklasena ja karskustegelasena / Ernits Villem

    Index Scriptorium Estoniae

    Ernits, Villem, 1891-1982

    2013-01-01

    Peeter Põld mõistis karskusküsimust eeskätt sotsiaalse probleemina, mis põimus tema usulis-filosoofiliste vaadetega. Ta oli karskusseltside kesktoimkonna liige ja Villem Reimani surma järel esimees

  15. Ross og erkendelsesteorien

    DEFF Research Database (Denmark)

    Holtermann, Jakob von Holderstein

    2006-01-01

    Et argument for at den logiske positivismes notoriske problemer ikke - som almindeligt antaget - har gjort Alf Ross' retsfilosofi forældet. Mere konkret påvises det at Ross i virkeligheden passer bedre sammen med den empiriske erkendelsesteori der har rejst sig på den logiske positivismes ruiner....

  16. Peeter I residentsid / Jüri Kuuskemaa

    Index Scriptorium Estoniae

    Kuuskemaa, Jüri, 1942-

    2005-01-01

    Peeter I linnaresidents Tolli t. 4 Tallinnas, maja (1662, 1714) ning lossi- ja pargiansambel (1718, arhitekt Niccolo Michetti, 1923. aasta sügisest ehitusel vastutav Mihhail Zemtsov, stukk Antonio Quadri, Salomon Zeltrecht, Matthias Seidtinger, Heinrich von Bergen, laemaal "Diana ja Aktaion" - Ernst Wilhelm Londicer noorem?, laemaaling merepoolses tiibhoones - Johann Heinrich Fick) Kadriorus. Bibliograafia lk. 454

  17. Victoria Land, Ross Sea, and Ross Ice Shelf, Antarctica

    Science.gov (United States)

    2002-01-01

    On December 19, 2001, MODIS acquired data that produced this image of Antarctica's Victoria Land, Ross Ice Shelf, and the Ross Sea. The coastline that runs up and down along the left side of the image denotes where Victoria Land (left) meets the Ross Ice Shelf (right). The Ross Ice Shelf is the world's largest floating body of ice, approximately the same size as France. Credit: Jacques Descloitres, MODIS Land Rapid Response Team, NASA/GSFC

  18. Rossing reaps training benefits

    International Nuclear Information System (INIS)

    Anon.

    1982-01-01

    A training program for unskilled operators at the Rossing Uranium Mine provides on avenue for a number of Namibians to become skilled workers without doing an apprenticeship and despite a lack of basic education. The Patterson plan has worked well so far for the purpose. A cadet scheme for leadership and trust foundation for scholarship have also been implemented

  19. The ROSS Language Manual.

    Science.gov (United States)

    1982-09-01

    when receiving (Mary requests meeting) (tell Mary meet for lunch at Superfood ) (tell Eunice bring stock reports) (tell Secretary cancel other lunch...someone requests meeting) (if (equal ’stockbroker (ask !someone recall your occupation)) then (tell ?someone meet for lunch at Superfood ) (tell...meet for lunch at Superfood ). Several other prefixes commonly used when writing ROSS code, either to control evaluation or to dictate variables in

  20. Tuuritav Peeter Võsa : Ma ei mõista, kuidas kaks naabrit teineteisele s***a loobivad! / Peeter Võsa ; interv. Rainer Kerge

    Index Scriptorium Estoniae

    Võsa, Peeter, 1967-

    2007-01-01

    Peeter Võsa Võsa tuur 2007 : "Võsa Pets paneb asjad paika!". Intervjuu teemad - Peeter Võsa on politseiga riius; õnnelik, et ei pääsenud Riigikokku; mõtleb "Võsareporteri" tulevikust ja muustki

  1. Bandura, Ross, and Ross: Observational Learning and the Bobo Doll

    Science.gov (United States)

    Artino, Anthony R., Jr.

    2007-01-01

    Since the publication of their seminal article entitled, "Transmission of Aggression Through Imitation of Aggressive Models" (Bandura, Ross, & Ross, 1961), the work of Albert Bandura and his co-authors has had an immeasurable impact on the field of psychology, in general, and educational psychology, more specifically. The purpose of this report is…

  2. Steven Spielberg hädas Peeter Paaniga / Timo Diener

    Index Scriptorium Estoniae

    Diener, Timo

    2004-01-01

    Steven Spielbergi raskused J.M. Barrie "Peeter Paani" ekraniseerimisel, tulemuseks mängufilm "Hook" : Ameerika Ühendriigid 1991. Järgneb 16. aug. 2004, lk. 38 pealkirja all "Rahulolematu Steven Spielberg"

  3. Estonian Society and Political Pictures : 6 Case Studies / Peeter Linnap

    Index Scriptorium Estoniae

    Linnap, Peeter, 1960-

    2002-01-01

    Kuus lugu Eesti dokumentaal- ja poliitilisest fotograafiast - põgenemine Läände, eestlased Teises maailmasõjas, Jüri Liimi fotod 1990. aastatest, Carl Sarapi ja Peeter Toominga fotolood, Marko Laimre "Jaotatud territooriumid"

  4. Eesti Pank kutsub konservatiivsusele / Peeter Raidla

    Index Scriptorium Estoniae

    Raidla, Peeter, 1955-

    2001-01-01

    Eesti Panga asepresident Märtin Ross kutsus eile ettevõtjaid suhtuma palkade tõstmisse ja laenukoormuse suurendamisse konservatiivselt ning ütles, et mitmed märgid annavad põhjust võrrelda majanduse praegust olukorda 1998.a. ülekuumenemisega

  5. MR diagnostics after Ross procedure

    International Nuclear Information System (INIS)

    Steffens, J.C.; Link, J.; Harringer, W.; Haverich, A.; Heller, M.

    1996-01-01

    Purpose: To determine the ability of MRI to diagnose morphological and functional changes in patients after Ross procedure. Material and methods: During one year, 5 patients after Ross procedure were studied by MRI. T 1 -weighted spin-echo sequences in different orientations as well as cine sequences and a VENC-sequence were used. Results: In all patients the morphology including the postoperative changes could be visualised by MRI. The cine sequences provided functional information on valvular and ventricular function. VENC-MR yielded an exact quantification of the regurgitant fraction. Conclusion: MRI is capable of providing all important diagnostic information in patients after Ross procedure such as valvular and ventricular function and valvular and outflow tract morphology in a single examination. (orig.) [de

  6. Peeter Simmi uus film jõuab kinno

    Index Scriptorium Estoniae

    2006-01-01

    Tallinna, Tartu ja Pärnu kinodes linastub homsest Eesti-Saksa koostööfilm "Kõrini" : režissöör Peeter Simm : osades Maarja Jakobson, Rasmus Kaljujärv, Heio von Stetten, Thomas Schmauser : Ruut Pictures (Eesti) - Saxonia Film (Saksa) 2005

  7. Dokumenteerimise sügavusest fotograafias ja filmis / Peeter Linnap

    Index Scriptorium Estoniae

    Linnap, Peeter, 1960-

    2000-01-01

    Ringvaatest ja fotoreportaažist. Humanismist ja natuurpoeesiast. Dokumentaalsest pildiuuurimusest ja autorifilmist. Eestis ilmunud autoriprojektid: Peeter Tooming/Carl Sarap "55 aastat hiljem" (1995-98), Eric Soovere (elab Cinncinatis) "Käru ja kaameraga" (Olion, 1999). Fotograafia ja filmi erinevustest dokumentalistikas

  8. Mis saab ESTERMist? / Tiina Soon, Peeter Päll, Ivi Papstel ; interv. Aili Künstler

    Index Scriptorium Estoniae

    Soon, Tiina

    2008-01-01

    Eesti Õiguskeskuse loodud andmebaasist ESTERM. Vastavad EKI terminoloogiaosakonna juhataja Tiina Soon, EKI keelekorraldusosakonna vanemteadur Peeter Päll, Justiitsministeeriumi avalike suhete talituse juhataja Ivi Papstel

  9. Peeter I majamuuseumi uus elu / Jüri Kuuskemaa

    Index Scriptorium Estoniae

    Kuuskemaa, Jüri, 1942-

    2005-01-01

    Hoone ajaloost, 2004. a. läbiviidud korrastustöödest, leidudest, muudatustest. Suuremas keldris eksponeeritakse skulptuure (Salomon Zeltrechti ja tema abiliste poolt aastail 1723-29 tehtud kivibüstid, August Weizenbergi portreebüst Peeter I-st). Projekt: OÜ Inrestauraator. Teostus: AS Tarrest. Muinsuskaitseline järelevalve: Linnaehituse AS. Barokkmööbli restaureeris Rein Laur. Ill.: välisvaade, 3 sisevaadet

  10. PÖFF zakrojetsa filmom "Dostalo!" / Peeter Simm ; interv. Eteri Kekelidze

    Index Scriptorium Estoniae

    Simm, Peeter, 1953-

    2005-01-01

    IX PÖFFil esilinastub Eesti-Saksa koostööfilm "Kõrini" : stsenaristid Valentin Kuik, Peeter Simm, Hans Werner Honert, Thomas Steinke : režissöör Peeter Simm : operaator Rein Kotov : Ruut Pictures (Eesti) - Saxonia Film (Saksa) 2005

  11. Sir Ronald Ross and the Malarial Parasite

    Indian Academy of Sciences (India)

    1997-08-20

    Aug 20, 1997 ... convincingly that malaria was caused by parasites present in the blood, but the important question was 'How do the germs get there?' The disease could not be prevented unless the route of infection was established! Young Ross Enters the Scene. In 1857, a General in the Indian Army, Sir C C G Ross and ...

  12. Changing Roots : Remodelling after the Ross Operation

    NARCIS (Netherlands)

    A. Mookhoek (Aart)

    2016-01-01

    textabstractThe Ross operation is a surgical intervention in which a diseased aortic valve is replaced by the pulmonary valve of the same patient. A donor valve replaces the pulmonary valve. In this thesis, several key unanswered clinical questions are explored. Early mortality after the Ross

  13. Noncommutative Blackwell-Ross martingale inequality

    Science.gov (United States)

    Talebi, Ali; Moslehian, Mohammad Sal; Sadeghi, Ghadir

    We establish a noncommutative Blackwell-Ross inequality for supermartingales under a suitable condition which generalizes Khan’s work to the noncommutative setting. We then employ it to deduce an Azuma-type inequality.

  14. Tolstoi "Sõda ja rahu" eesti moodi / Peeter Volkonski, Karin Tammaru ; interv. Jaanika Juhanson

    Index Scriptorium Estoniae

    Volkonski, Peeter, 1954-

    1999-01-01

    Mikk Mikiveri lavaversioon Lev Tolstoi suurromaanist "Sõda ja rahu" Vanemuises, lavastaja Mikk Mikiver, kunstnik Ervin Õunapuu. Peaosades Peeter Volkonski, Karin Tammaru, Jüri Lumiste. Esietendus 13. nov

  15. Millise tuleviku You Tube meile toob? / Peeter Marvet ; interv. Pullerits, Priit

    Index Scriptorium Estoniae

    Marvet, Peeter, 1970-

    2008-01-01

    Tehnokratina tuntud Peeter Marvet, uue meedia juhtiv asjatundja Eestis, on viimastel aastatel jälginud noorte ja internetiga toimuvat kogu maailmas, mistõttu Postimees palus tema hinnangut, milline võiks olla veebi roll Soome koolimõrvades

  16. Rõõmus jõulukoosviibimine New Yorgi Eesti Majas / Airi Vaga ; fotod: Peeter Teedla

    Index Scriptorium Estoniae

    Vaga, Airi, 1940-

    2006-01-01

    New Yorgi Eesti Haridusseltsi korraldusel, tervitused ütles seltsi esimees Peeter Teedla, järgnes palvus, sõnavõtt ja New Yorgi Eesti Naiskoori esinemine, õhtu solist oli sopran Mariliina Vilimaa.

  17. Konrad Mäe preemia pälvis Peeter Allik

    Index Scriptorium Estoniae

    2001-01-01

    Konrad Mäe medali ja rahalise preemia (25000 krooni) pälvis Peeter Allik maaliga "Ma nägin seda". Medalit annavad välja EKL, Eesti Maalikunstnike Liit ja Eesti Kultuurkapitali kujutava- ja rakenduskunsti sihtkapital.

  18. Visuaalantropoloogia - inimlik mõõde asjade maailmas / Jay Ruby ; interv. Peeter Linnap

    Index Scriptorium Estoniae

    Ruby, Jay

    2006-01-01

    Ameerika visuaalkultuuri teoreetik Jay Ruby on paari viimase aastakümne jooksul keskendunud pildilise kommunikatsiooni etnograafilisele käsitlemisele Ameerika maaühiskonnas. Peeter Linnapi intervjuu Jay Rubyga Tartu Kõrgemas Kunstikoolis 23. V

  19. Mille üle vaieldakse Eesti hariduses? / Peeter Kreitzberg ; vahendas Sirje Tohver

    Index Scriptorium Estoniae

    Kreitzberg, Peeter, 1948-2011

    2001-01-01

    Peeter Kreitzbergi kõne 24.-27.05.2001 Tallinna Pedagoogikaülikooli ja Haridusfoorumi korraldatud EFFE (European Forum for Freedom in Education) konverentsil Tallinnas : Eesti hariduse arengu olulisematest küsimustest

  20. Uus raadiojaam tuleb venekeelne / Rasmus Rekand ; kommenteerinud Peeter Sookruus ja Ilmar Kompus

    Index Scriptorium Estoniae

    Rekand, Rasmus

    2010-01-01

    Tartu raadiosageduse 101,2 MHz ringhäälinguluba anti AS-le Taevaraadio, kes hakkab edastama venekeelset raadioprogrammi. Kommentaarid kultuuriministeeriumi esindajalt Peeter Sookruusilt ja Sky Media juhatajalt Ilmar Kompuselt

  1. Toit ja restoran peavad rääkima sama lugu / Peeter Pihel ; intervjueerinud Priit Pruul

    Index Scriptorium Estoniae

    Pihel, Peeter

    2015-01-01

    Intervjuu Rootsi parima restorani Fäviken Magasineti sous chef'i ehk peakoka parema käe Peeter Piheliga olulisest tänapäeva restoranide kommunikatsioonis, kommunikatsiooni korraldusest Fäviken Magasinetis

  2. Suur Peeter ja väike Piret sõidavad Pariisi

    Index Scriptorium Estoniae

    2008-01-01

    IBBY-France valis Euroopa kultuuridevahelise dialoogi aastat tähistavale näitusele "Ringreis Euroopas läbi 27 pildiraamatu" Eestit esindama Peeter Volkonski ja Piret Raua lasteraamatu "Onu Volgi värsiraamat"

  3. The South Pole and the Ross Sea

    Science.gov (United States)

    2002-01-01

    This image shows a rare clear view of the South Pole (lower right) and the Ross Sea, Antarctica. The Sea-viewing Wide Field-of-view Sensor (SeaWiFS) acquired the scene on December 26, 2001. The geographic South Pole is located in the center of Antarctica, at an altitude of 2,900 meters (9,300 feet). It rests on a continent-wide ice sheet that is 2,870 m thick, with the underlying bedrock only 30 m (98 feet) above sea level. The ice underlying the South Pole is as much as 140,000 years old, and is currently accumulating at about 82 cm (32 inches) per year. Roughly 2,500 km (1,550 miles) away is the green water of the Ross Sea, which indicates the presence of large numbers of phytoplankton. This is a highly productive part of the world's oceans. Also note the ice gathered around McMurdo Sound, seen toward the lefthand shoreline of the Ross Sea, at the edge of the Ross Ice Shelf. According to National Science Foundation researchers, this ice is making it difficult for penguins to reach their food supply. Separating the continental Antarctic ice sheet from the Ross Sea are the Queen Maud Mountains and the Ross Ice Shelf. Image courtesy the SeaWiFS Project, NASA/Goddard Space Flight Center, and ORBIMAGE

  4. Hirmu pildid : puuduvatest valdkondadest Eesti visuaalkultuuris / Peeter Linnap

    Index Scriptorium Estoniae

    Linnap, Peeter, 1960-

    2007-01-01

    Pildid, mis tekitavad hirmu. Kontroll informatsiooni üle ja selle filtreerimine. Eesti pildihirmu spetsiifikast. 19 sajand - algus visuaalsele peitemängule Eestis. Ühiskondliku ebavõrdsuse varjamisest ja kuvamisest Eestis. 1940. aastate õudused: eestlaste suurim diasporaa pildis. Karl Nikolai Hintzeri ja Donald Koppeli sõjafotodest. Sööst tundmatusse: Eric Soovere põgenemisfotod 1944-1949. Küüditamise fotod: Ants Leitmäe Siber 1949-1959. Metsavendade fotod. 1990. aastate algus - selge pilgu naasmine kujutamisse. Kollektiivse kaotuse trauma Peeter Toominga/Carl Sarapi projektis "55 aastat hiljem" (1937/1992). Jüri Liimi lõpukaadrid ENSVst (1990-1992). Hirmu pildid skoopilise kontrolli ajastul - pronksiöö paradoksaalseid kuvandeid 2007.a. Järgneb 2007, nr. 26, lk. 30-35

  5. Ettevalmistustööd Vabaduse platsil oleva Peeter I ausamba äraviimiseks. Foto on tehtud 29. aprilli päeval 1922. a.

    Index Scriptorium Estoniae

    2007-01-01

    Eesti Filmiarhiivi fotokogu foto, mis on tehtud 29. aprilli päeval 1922. a., kui tehti ettevalmistustöid Vabaduse platsil oleva Peeter I ausamba äraviimiseks. Peeter I kuju oli püstitatud 1910. aastal

  6. Jõhvi kiriku eelmise altari küljes kuni aastani 1900 olnud Balti aadli vapid on taastatud ja kirikusaali seintele kinnitatud / Peeter Kaldur

    Index Scriptorium Estoniae

    Kaldur, Peeter

    2005-01-01

    29. IX vapid õnnistati, avati vappide osadega vitriinid. Vappide avamisele eelnenud konverentsil tutvustas vappe Vallo Reimaa, Porkuni linnusest rääkis Jevgeni Kaljundi, Jõhvi kiriku orelist Peeter Kaldur, E. Bornhöhe Jõhvi perioodist Peeter Olesk

  7. STS-110 Crew Interview: Jerry Ross

    Science.gov (United States)

    2002-01-01

    STS-110 Mission Specialist Jerry Ross is seen during this preflight interview, where he gives a quick overview of the mission before answering questions about his inspiration to become an astronaut and his career path. Ross outlines his role in the mission in general, and specifically during the docking and extravehicular activities (EVAs). He describes the payload (S0 Truss and Mobile Transporter) and the dry run installation of the S0 truss that will take place the day before the EVA for the actual installation. Ross discusses the planned EVAs in detail and outlines what supplies will be left for the resident crew of the International Space Station (ISS). He ends with his thoughts on the most valuable aspect of the ISS.

  8. Kaks teksti Juhan Torgilt : Eesti laste intelligents. 100 aastat Peeter Põllu sünnist / Juhan Tork

    Index Scriptorium Estoniae

    Tork, Juhan

    2000-01-01

    Artiklid "Eesti laste intelligents" ja "100 aastat Peeter Põllu sünnist" pärinevad J. Torgi raamatust "Juhan Tork. Seisata, rändur! Kanada, 1993". "Eesti laste intelligents" on tagasivaade J. Torgi monograafiale, mis oli ühtlasi tema doktoriväitekiri. "100 aastat Peeter Põllu sünnist" heidab valgust kahe suurmehe koostööle

  9. 36 CFR 7.69 - Ross Lake National Recreation Area.

    Science.gov (United States)

    2010-07-01

    ... 36 Parks, Forests, and Public Property 1 2010-07-01 2010-07-01 false Ross Lake National Recreation... INTERIOR SPECIAL REGULATIONS, AREAS OF THE NATIONAL PARK SYSTEM § 7.69 Ross Lake National Recreation Area... snowmobiles the following locations within the Ross Lake National Recreation Area: (1) State Highway 20, that...

  10. Sir Ronald Ross and the Malarial Parasite

    Indian Academy of Sciences (India)

    1997-08-20

    Aug 20, 1997 ... In 1857, a General in the Indian Army, Sir C C G Ross and his wife Matilda gave birth to Ronald .... generally low-caste Indians who required a fee before drinking the water and also an assurance that they ... nary demand being made upon their systems, as by fatigue, chill, or dissipation. I have even heard it ...

  11. Sir Ronald Ross and the Malarial Parasite

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 11; Issue 7. Sir Ronald Ross and the Malarial Parasite - Discovery of its Route - From Man to Mosquito and Back. Shobhona Sharma. General Article Volume 11 Issue 7 July 2006 pp 4-13 ...

  12. Comparison of the Ross/Ross-Konno aortic root in children before and after the age of 18 months.

    Science.gov (United States)

    Lo Rito, Mauro; Davies, Ben; Brawn, William J; Jones, Timothy J; Khan, Natasha; Stickley, John; Barron, David J

    2014-09-01

    Evaluation of long-term results after the Ross/Ross-Konno operation in patients Ross/Ross-Konno operation (1991-2011). Data were obtained from hospital records and follow-up was 100% complete. Between January 1991 and December 2011, 140 patients underwent the Ross/Ross-Konno operation and 22 patients were Ross operation and 8 patients a Ross-Konno operation. Presentation at surgery was aortic valve stenosis in 13, regurgitation in 7 and mixed disease in 2. Only 4 patients (18%) had no surgery prior to Ross/Ross-Konno, and among the others the previous most frequent operation was aortic valvotomy (55%). There were 3 early deaths, all in high-risk cases with poor preoperative left ventricular function. At discharge there was no neoaortic regurgitation in 10, trivial in 4 and mild in 5. The median follow-up is 10.8 years (range 0.96-21). There was 1 late death due to progressive ventricular dysfunction 2.4 years after Ross-Konno and mitral valve replacement. Survival for patients 18-months patients (P Ross/Ross-Konno can be invaluable in the younger age group but not without risk in the setting of ventricular dysfunction. Long-term performance of the neoaortic valve is significantly better than in older children, which is related to maintenance of normal root dimensions compared with progressive dilatation in patients undergoing Ross/Ross-Konno at older ages. © The Author 2014. Published by Oxford University Press on behalf of the European Association for Cardio-Thoracic Surgery. All rights reserved.

  13. Hinnatuima ajakirjandusauhinna võitis Peeter Raidla / Raimo Ülavere

    Index Scriptorium Estoniae

    Ülavere, Raimo, 1970-

    2006-01-01

    Äripäeva ajakirjanik Peeter Raidla võitis Ain Hanschmidti rikastumist kajastava artikli eest Bonnieri uuriva ajakirjanduse preemia. Vt. samas: Bonnieri uuriva ajakirjanduse preemia võitjad; Peeter Raidla - staazhikas uuriv ajakirjanik; Parim uudis ja olemuslugu Postimehe ajakirjanikelt; Gert D. Hankewitz. Raidla: ma ei mõelnud lugu kirjutades auhinnale; Erik Prozes. Aasta parimad pressifotod tegid Äripäeva fotograafid; Parim maakonnauudis rääkis Kohtla-Järve suurettevõtjast; Parima kujundusega on SL Õhtuleht

  14. STS-88 Crew Interview: Jerry Ross

    Science.gov (United States)

    1998-01-01

    Jerry Ross discusses the seven-day mission that will be highlighted by the mating of the U.S.-built Node 1 station element to the Functional Energy Block (FGB) which will already be in orbit, and two spacewalks to connect power and data transmission cables between the Node and the FGB. Node 1 will be the first Space Station hardware delivered by the Space Shuttle. He also disscusses the assembly sequence. The crew will conduct a series of rendezvous maneuvers similar to those conducted on other Shuttle missions to reach the orbiting FGB. Once the two elements are docked, Ross and Newman will conduct two scheduled spacewalks to connect power and data cables between the Node, PMAs and the FGB. The day following the spacewalks, Endeavour will undock from the two components, completing the first Space Station assembly mission.

  15. Ross Ice Shelf, Antarctic Ice and Clouds

    Science.gov (United States)

    1991-01-01

    In this view of Antarctic ice and clouds, (56.5S, 152.0W), the Ross Ice Shelf of Antarctica is almost totally clear, showing stress cracks in the ice surface caused by wind and tidal drift. Clouds on the eastern edge of the picture are associated with an Antarctic cyclone. Winds stirred up these storms have been known to reach hurricane force.

  16. Peeter Jalakas : Elamine on väga isiklik asi / Anu Aaremäe

    Index Scriptorium Estoniae

    Aaremäe, Anu

    2007-01-01

    Stephen Hawkingi raamatu "A Brief History of Time" aineline lavastus "Õnne valem", helilooja Gavin Bryars, autor ja lavastaja Peeter Jalakas, Tallinna tollilaos. Von Krahli Teatri lavastaja etenduse sünnist, endast, ökoloogilisest mõtlemisest, teatri tulevikuplaanidest

  17. Keelduvast liikumisest. I-III / Sergei Eisenstein ; tõlk. Peeter Raudsepp

    Index Scriptorium Estoniae

    Eisenstein, Sergei, 1898-1948

    2007-01-01

    Käsitlusi Vsevolod Meierholdi biomehaanikast (näitlejate treeningsüsteem). Lisaks tõlkija Peeter Raudsepa eessõna. Tõlgitud raamatust "Sergei Eizenstein. Izbrannõje proizvedenija v shesti tomahh. Tom 4", Moskva, 1966. Kolmandas osas katkend artiklist "Biomechanics: Understanding Meyerhold's System of Actor Training". Tõlgitud väljaandest "Movement for Actors"

  18. Kunst on vaimu avardumise üks keskseid koldeid / Peeter Maria Laurits ; interv. Laura Kuusk

    Index Scriptorium Estoniae

    Laurits, Peeter, 1962-

    2006-01-01

    Peeter Laurits oma loomingust, näitustest "Voolav labürint" (koostöö Katzi ja Hollandi Pavlov Medialabiga) SEB Ühispanga galeriis, "Meistriteoste varjus" (koos Laurentsiusega) Kadrioru Kunstimuuseumis, isikunäitusest "Vana labürint" ArtDepoos, autorikaitsest jm.

  19. Publikule meeldis Sleepwalkers, žüriile "Must Peeter" / Kristiina Davidjants

    Index Scriptorium Estoniae

    Davidjants, Kristiina, 1974-

    2008-01-01

    Pimedate Ööde 12. filmifestivali alafestivali Sleepwalkers edukusest ja auhinnatutest annab teavet festivali juht Helen Vinogradov. Eesti lühifilmide programmi peaauhinna sai Priit Pääsuke ("Must Peeter"). Rahvusvahelise tudengifilmi peaauhinna sai Reto Caffi "Piiri peal"

  20. "Dostali!" - s segodnjashnego dnja / Peeter Simm, Artur Talvik ; interv. Boris Tuch

    Index Scriptorium Estoniae

    Simm, Peeter, 1953-

    2006-01-01

    Tallinnas ning Tartu ja Pärnu kinodes esilinastub Eesti-Saksa koostööfilm "Kõrini" : režissöör Peeter Simm : osades Maarja Jakobson, Rasmus Kaljujärv, Heio von Stetten, Thomas Schmauser : Ruut Pictures (Eesti) - Saxonia Film (Saksa) 2005

  1. Stenbocki maja rekonstrueerimine : Eesti Vabariigi Valitsuse ja Riigikantselei hoone / Peeter Tambu

    Index Scriptorium Estoniae

    Tambu, Peeter

    2000-01-01

    Arhitektuurne projekt: Kalle Rõõmus AB. Arhitekt Ülle Orav. Sisekujundus: Vaikla Stuudio, sisekujundajad Ain Koit, Raja Gonestov, Angeelika Pärna, Peeter Tambu, Argo Vaikla, Katrin Vaikla. Konstruktiivne osa: ESP. Arhitektuuriajaloolised eritingimused Rasmus Kangropool, eksperdid Mart Kalm, Leila Pärtelpoeg. Hoone ajaloost. Arhitektuurne ja sisekujundusprojekt, ehitus 1996-2000, sisustusprojekt 2000. 8 ill

  2. Esmaspäeval esietendub Peeter Jalaka "Õnne valem" / Andres Laasik

    Index Scriptorium Estoniae

    Laasik, Andres, 1960-2016

    2007-01-01

    Peeter Jalakas lavastab briti helilooja Gavin Bryarsi uudisteost "Õnne valem". Etenduses on kaastegev ka NYYD Ensemble Olari Eltsi juhtimisel. Lavastuse koreograafia on Jalakas loonud koos Narvast pärit tantsija-koreograafi Stanislav Varkkiga, etenduse kunstnik on Kirke Kangro, kostüümikunstnik Reet Aus

  3. Vzgljanuv na sebja objektivno i zhestko / Peeter Simm ; interv. Ella Agranovskaja

    Index Scriptorium Estoniae

    Simm, Peeter, 1953-

    2007-01-01

    Anapas SRÜ ja Baltimaade XV avatud filmifestivalil "Kinoshokk 2006" peapreemia saanud Peeter Simmi mängufilmil "Kõrini!" on esitatud Venemaa filmiauhinnale "Nike". Filmi sünniloost, koostööst stsenarist-produtsent Hans-Werner Honertiga ja muust

  4. Ross Versus Non-Ross Aortic Valve Replacement in Children: A 22-Year Single Institution Comparison of Outcomes.

    Science.gov (United States)

    Brown, John W; Patel, Parth M; Ivy Lin, Jiuann-Huey; Habib, Asma S; Rodefeld, Mark D; Turrentine, Mark W

    2016-05-01

    The Ross aortic valve replacement (AVR) has been the AVR of choice for children at our center since 1993. Absence or inadequate quality of the pulmonary valve or, less commonly, family or surgeon preference caused us to select an alternative AVR prosthesis for some children. This review compares the outcomes of 42 children who received a non-Ross AVR with 115 children undergoing Ross root replacement at our institution during the most recent 22 years. A retrospective chart review of the 42 pediatric non-Ross AVRs was compared with 115 Ross AVRs. The mean age at AVR was 11.0 ± 6.5 years (range, 1 month to 18 years) for the non-Ross and 11.4 ± 5.5 years (range, 6 weeks to 18 years) for the Ross groups. Follow-up was 7.8 ± 6.2 years for the Ross group and 8.7 ± 6.5 years for the non-Ross group. The Ross AVR technique was modified in 2000; these modifications were applied to 72 patients (63%) of the total Ross AVR group. All-cause early and late mortality of the non-Ross AVR group was 17% compared with 4% for the Ross cohort (p = 0.017). The actuarial survival rate at 20 years for the non-Ross AVR group was 81% compared with 94% for the Ross group (p = 0.018). Reintervention rate was 29% (12/38) in the non-Ross group and 28% (32/115) in the entire Ross group (60% [26/43] before 2000, and 8% [6/72] after 2000). Thromboemboli, bleeding, and endocarditis occurred in 2.4%, 1.4%, and 10% in the non-Ross group compared with 0.9%, 2.6%, and 1.7% in the Ross AVR group (p = 0.46, 0.01, and 0.02), respectively. Patients in the non-Ross group had a significantly higher recurrent or persistent aortic valve gradient (>20 mm Hg) than did patients in the Ross group at most recent follow-up (p Ross AVR than with other types of AVR prostheses. The Ross AVR remains the treatment of choice for children who have an adequate pulmonary valve. Reoperation for Ross root dilatation, regurgitation, or both (only 6% since our modifications in 2000) has markedly reduced the main drawbacks

  5. Mida arvatakse omavalitsustes koolivõrgu optimeerimisest? / Mart Järvik, Maris Liiders, Peeter Aas, Kaarin Veinbergs

    Index Scriptorium Estoniae

    2012-01-01

    Arvamust avaldasid Järvakandi vallavanem, Raplamaa omavalitsuste liidu esimees Mart Järvik, Harju maavalitsuse haridus- ja sotsiaalosakonna juhataja Maris Liiders, Põlva maavalitsuse haridus- ja sotsiaalosakonna juhataja Peeter Aas, Ida-Viru maavalitsuse haridus- ja sotsiaalosakonna juhataja Kaarin Veinbergs

  6. Berliini filmifestivalil näeb ka Peeter Simmi filmi "Head käed" / Triin Tael

    Index Scriptorium Estoniae

    Tael, Triin

    2002-01-01

    Berliini 52. filmifestival algas eile sakslase Tom Tykweri mängufilmiga "Taevas". Esmakordselt on festivali "Panorama" kavas eesti mängufilm, milleks on Peeter Simmi "Head käed". Eesti filmid on esil ka festivali suurel filmiturul

  7. Restoran Noa Miidurannas = Noa Restaurant in the Miiduranna area of Tallinn / Peeter Loo, Jan Skolimowski, Kaspar Kruuse, Tarmo Piirmets ; kommenteerinud Raivo Kotov

    Index Scriptorium Estoniae

    2015-01-01

    Noa restoran Miidurannas Ranna tee 3, valminud 2014. Arhitektid Peeter Loo, Jan Skolimowski, Kaspar Kruuse (Kamp Arhitektid), sisearhitekt Tarmo Piirmets (Pink). Eesti Kultuurkapitali Arhitektuuri sihtkapitali arhitektuuripreemia 2014

  8. Success: Richard Dyer on Diana Ross [and Beyond

    NARCIS (Netherlands)

    Kooijman, J.

    2016-01-01

    In June 1982, film scholar Richard Dyer published a two-page essay on African-American star Diana Ross in the journal Marxism Today. Part of Dyer’s essay focuses on the American conception of success and specifically on how Ross is one of the few black artists who has been "allowed" to be such a

  9. Histomorphometry of the esophagus of adult ross broilers | Mobini ...

    African Journals Online (AJOL)

    The purpose of this study was to determine the histomorphometrical variations of esophagus at different regions in Ross broilers. Twenty four apparently healthy adult Ross broilers (12 females and 12 males), aged from 7 to 9 weeks, were used. Tissue samples were taken from middle parts of cervical and thoracic regions of ...

  10. Anneli Remme soovitab : "Peeter!". Ciacinto Scelsi - mees Ida ja Lääne piirilt / Anneli Remme

    Index Scriptorium Estoniae

    Remme, Anneli, 1968-

    2002-01-01

    21. mail ja 1. juunil etendub Kanuti Gildi saalis tragikoomiline ning ühiskonnakriitiline dokumentaalooper "Peeter!", kus Areeni toimetajad Barbi Pilvre ja Tõnu Kaalep toovad avalikkuse ette tõlgenduse toimetaja Kalev Kesküla ja kirjanduskriitik Peeter Künstleri sõpruse tähelepanuväärsetest omadustest. Vastavaid osi esitavad laval Jaan-Villem Sibul ja Indrek Taalmaa. Eesti värskeima multimeediumi juurde kuulub tants ning Andres Maimiku - Jaak Kilmi filmikaadrid mitmete "avalike loomeinimeste" osalusel. Helilooja Toomas Trass. 30. mail toimub Eesti Muusikaakadeemia orelisaalis loeng-kontsert Scelsi muusikast, esinevad Tarmo Johannes (flöödid ja loeng) ning Vambola Krigul (löökpillid)

  11. Eesti Vabariik sai Tartu rahuga 1920. aastal maksimumi / Peeter Järvelaid ; intervjueerinud Erkki Bahovski

    Index Scriptorium Estoniae

    Järvelaid, Peeter, 1957-

    2016-01-01

    Eesti avalikkus tähistas jaanuaris Jaan Poska 150. sünniaastapäeva. Intervjuu Jaan Poska mälestusfondi nõukogu esimehe, Tallinna Ülikooli õigusajaloo ja võrdleva õiguse korralise professori Peeter Järvelaidiga Jaan Poska rollist Eesti iseseisvumisel ja Tartu rahuläbirääkimistel ning tema kogemusi, millest õppida praeguses välispoliitikas

  12. Peeter Suur kaasaegses Saksa trükimeedias / Kaarel Vanamölder

    Index Scriptorium Estoniae

    Vanamölder, Kaarel

    2008-01-01

    Rets. rmt.: Astrid Blome. Das deutsche Russlandbild im frühen 18. Jahrhundert. (Forschungen zur osteuropäischen Geschichte. Band 57). Osteuropa-Institut der Freien Wiesbaden, 2000. Astrid Blome dissertatsioon kirjeldab Põhja-Saksa kirjutava pressi vaatenurka Põhjasõjale ja Peeter I-le. Töös kohtame ka Eestis toimunud sündmuste kajastusi. Astrid Blome dissertatsiooni ja Otto Fabian von Wrangelli kroonika paralleelsustest

  13. The Paediatric Cardiology Hall of Fame – Donald Nixon Ross.

    Science.gov (United States)

    Somerville, Jane

    2015-10-01

    Donald Nixon Ross, FRCS (4 October 1922 to 7 July 2014) was a South African-born British cardiothoracic surgeon, who developed the pulmonary autograft, known as the Ross procedure, for the treatment of aortic valve disease, and also performed the first heart transplant in the United Kingdom in 1968. This paper, written by Jane Somerville, Professor of Cardiology [Retired], Imperial College London, London, United Kingdom, provides the personal recollections about Donald Ross from Jane Somerville, and thus provides a unique snapshot of cardiac surgical history.

  14. The Ross Procedure in Pediatric Patients: A 20-Year Experience of Ross Procedure in a Single Institution.

    Science.gov (United States)

    Yoon, Dong Woog; Yang, Ji-Hyuk; Jun, Tae-Gook; Park, Pyo Won

    2017-08-01

    The Ross/Ross-Konno procedure is considered a good option for irreparable aortic valve disease in pediatric patients because of its hemodynamic performance and potential for growth of the pulmonary autograft. This study is a review of the long-term results of our 20-year experience with the Ross and Ross-Konno operations in a single institution. Between June 1995 and January 2016, 16 consecutive patients (mean age, 6.0±5.9 years; range, 16 days to 17.4 years) underwent either a Ross operation (n=9) or a Ross-Konno operation (n=7). The study included 12 males and 4 females, with a median follow-up period of 47 months (range, 6 to 256 months). There were no cases of in-hospital or late mortality. Six reoperations were performed in 5 patients. Four patients underwent right ventricular-pulmonary artery (RV-PA) conduit replacement. Two patients underwent concomitant replacement of the pulmonary autograft and RV-PA conduit 10 years and 8 years after the Ross operation, respectively. The rate of freedom from adverse outcomes of the pulmonary autograft was 88% and 70% at 5 and 10 years, respectively. The rate of freedom from valve-related reoperations was 79% and 63% at 5 and 10 years, respectively. Pulmonary autografts demonstrated good durability with low mortality. The Ross/Ross-Konno procedure is a good option that can be performed safely in pediatric patients with aortic valve disease, even in a small-volume center.

  15. Ross Ice Drainage System (RIDS) Glaciochemical Analysis, Version 1

    Data.gov (United States)

    National Aeronautics and Space Administration — The Ross Ice Drainage System (RIDS) project provides a high-resolution record of atmospheric chemical deposition taken from several ice cores and snow pits located...

  16. ROSS Skills, Knowledge, and Abilities Training Evaluation. Gaps and Recommendations

    Energy Technology Data Exchange (ETDEWEB)

    Ala, Maureen [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Gruidl, Jeremiah [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Buddemeier, Brooke [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

    2015-09-30

    This document describes the development of the ROSS SKAs, the cross-mapping of the SKAs to the available training, identifies gaps in the SKA and training, and provides recommendations to address those gaps.

  17. Kas demonstrandid suudavad muuta? / Sven Mikser, Kristiina Ojuland, Tanel Ross

    Index Scriptorium Estoniae

    Mikser, Sven, 1973-

    2001-01-01

    Küsimusele, kas viimasel paaril aastal järjest kasvanud protestiaktsioonid riigijuhtide tippkohtumise paikades on toonud ka sisulisi muutusi, vastavad Sven Mikser, Kristiina Ojuland, Tanel Ross. Parlamendisaadik (Sven Mikser, Kristiina Ojuland)

  18. DVD Review: "The Silver Fez" Directed by Lloyd Ross (2009 ...

    African Journals Online (AJOL)

    Abstract. Producer: Lloyd Ross, Joelle Chesselet. Sound design: Warrick Sony. Cast: Abubakar Davids, Mogamat Zain Benjamin. Approx. 87 min. Distributor: IRIS. ZAR 129.99. Journal of the Musical Arts in Africa, Volume 9 2012, 89–91 ...

  19. The Ross II procedure: pulmonary autograft in the mitral position.

    Science.gov (United States)

    Athanasiou, Thanos; Cherian, Ashok; Ross, Donald

    2004-10-01

    The surgical management of mitral valve disease in women of childbearing age, young patients, and children with congenital mitral valve defects is made difficult by the prospect of lifelong anticoagulation. We suggest the use of a pulmonary autograft in the mitral position (Ross II procedure) as an alternative surgical technique. We present a review of the literature, historical perspectives, indications, selection criteria, and surgical technique for the Ross II procedure. Our literature search identified 14 studies that reported results from the Ross II operation. Performed in 103 patients, the overall in-hospital mortality was 7 (6.7%), with a late mortality of 10 (9%). Although further research is needed, current evidence suggests the Ross II operation is a valuable alternative in low-risk young patients where valve durability and the complication rate from other procedures is unsatisfactory and anticoagulation not ideal.

  20. Minevikupärandit Häädemeestelt / Eevi Ross

    Index Scriptorium Estoniae

    Ross, Eevi, 1938-

    2012-01-01

    Raamatututvustus: Minevikupärandit Häädemeestelt : valimik korrespondentide murdetekste. VIII / Eesti Teaduste Akadeemia Emakeele Selts ; kogunud Marta Mäesalu ; koostanud ja toimetanud: Helju Kaal, Eevi Ross. Tallinn : Emakeele Selts, 2012

  1. A generalization of Ross-Thomas' slope theory

    OpenAIRE

    Odaka, Yuji

    2009-01-01

    We give a formula of the Donaldson-Futaki invariants for certain type of semi test configurations, which essentially generalizes Ross-Thomas' slope theory. The positivity (resp. non-negativity) of those "a priori special" Donaldson-Futaki invariants implies K-stability (resp. K-semistability). We show its applicability by proving K-(semi)stability of certain polarized varieties with semi-log-canonical singularities, generalizing some results by Ross-Thomas.

  2. STS-74 M.S. Jerry L. Ross suits up

    Science.gov (United States)

    1995-01-01

    Spaceflight veteran Jerry L. Ross, Mission Specialist 2 on Shuttle Mission STS-74, is assisted by a suit technician as he finishes getting into his launch/entry suit in the Operations and Checkout Building. Ross and four fellow astronauts will depart shortly for Launch Pad 39A, where the Space Shuttle Atlantis awaits a second liftoff attempt during a seven-minute window scheduled to open at approximately 7:30 a.m. EST, Nov. 12.

  3. Western Ross Sea continental slope gravity currents

    Science.gov (United States)

    Gordon, Arnold L.; Orsi, Alejandro H.; Muench, Robin; Huber, Bruce A.; Zambianchi, Enrico; Visbeck, Martin

    2009-06-01

    Antarctic Bottom Water of the world ocean is derived from dense Shelf Water that is carried downslope by gravity currents at specific sites along the Antarctic margins. Data gathered by the AnSlope and CLIMA programs reveal the presence of energetic gravity currents that are formed over the western continental slope of the Ross Sea when High Salinity Shelf Water exits the shelf through Drygalski Trough. Joides Trough, immediately to the east, offers an additional escape route for less saline Shelf Water, while the Glomar Challenger Trough still farther east is a major pathway for export of the once supercooled low-salinity Ice Shelf Water that forms under the Ross Ice Shelf. The Drygalski Trough gravity currents increase in thickness from ˜100 to ˜400 m on proceeding downslope from ˜600 m (the shelf break) to 1200 m (upper slope) sea floor depth, while turning sharply to the west in response to the Coriolis force during their descent. The mean current pathway trends ˜35° downslope from isobaths. Benthic-layer current and thickness are correlated with the bottom water salinity, which exerts the primary control over the benthic-layer density. A 1-year time series of bottom-water current and hydrographic properties obtained on the slope near the 1000 m isobath indicates episodic pulses of Shelf Water export through Drygalski Trough. These cold (34.75) pulses correlate with strong downslope bottom flow. Extreme examples occurred during austral summer/fall 2003, comprising concentrated High Salinity Shelf Water (-1.9 °C; 34.79) and approaching 1.5 m s -1 at descent angles as large as ˜60° relative to the isobaths. Such events were most common during November-May, consistent with a northward shift in position of the dense Shelf Water during austral summer. The coldest, saltiest bottom water was measured from mid-April to mid-May 2003. The summer/fall export of High Salinity Shelf Water observed in 2004 was less than that seen in 2003. This difference, if real

  4. See on sitt, see on nikk. Kust tuleb porno? : [Ropendamine kirjanduses] / Peeter Sauter

    Index Scriptorium Estoniae

    Sauter, Peeter, 1962-

    1995-01-01

    Vastukaja : Tamm, E. Kas eetiline kriis? // Eesti Ekspress. - 1995. - 25.nov. - Lk.A5; Miks me avaldame Peeter Sauterit? // Eesti Ekspress. - 1995. - 25.nov. - Lk.A5. - Allk.: Areeni toimetus; Jaas, Katrin. Kummutagem tabud! // Eesti Ekspress. - 1995. - 1.dets. - Lk.A5; Männard, Tarmo. Virisemine etteantud teemal // Eesti Ekspress. - 1995. - 8.dets. - Lk.A5; Kohv, Hillar. Porno pole UFO // Eesti Ekspress. - 1995. - 8.dets. - Lk.A5; Sirkel, Mati. Tahan tabu tagasi // Eesti Ekspress. - 1995. - 8.dets. - Lk.A5

  5. Radiological Operations Support Specialist (ROSS) Pilot Course Summary and Recommendations

    Energy Technology Data Exchange (ETDEWEB)

    Alai, M. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Askin, A. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Buddemeier, B. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Wogan, L. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Doshi, P. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Tai, L. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

    2016-09-30

    In support of the Department of Homeland Security / Science and Technology Directorate’s (DHS/S&T) creation of a new position called the Radiological Operations Support Specialist (ROSS), Lawrence Livermore National Laboratory (LLNL) in Sub-task 1.1 and 1.2 has assisted in the development of the ROSS skills, knowledge, and abilities (SKAs); identified potentially relevant training; cross-mapped the training to the SKAs; and identified gaps in the training related to the SKAs, as well as their respective level of training knowledge - current versus desired. In the follow on task, Sub-task 1.3, a 5 day ROSS Pilot Training course was developed to fill the priority gaps identified in Sub-Task 1.2. Additionally, in Sub-Task 1.5, LLNL has performed a gap analysis of electronic tools, handbooks, and job-aides currently available to the ROSS and developed recommendations for additional and next generation tools to ensure the operational effectiveness of the ROSS position. This document summarizes the feedback received from the instructors and pilot course observers on what worked in the course and what could be improved as well as an assessment of the Pre- and Post-Test administered to the students.

  6. Kas erivajadustega lapsed saavad õigel ajal abi? / Ene Mägi, Urve Raudsepp-Alt, Ale Sprenk, Peeter Aas

    Index Scriptorium Estoniae

    2009-01-01

    Küsimusele vastavad: Tallinna Ülikooli Kasvatusteaduste Instituudi eri- ja sotsiaalpedagoogika osakonna juhataja Ene Mägi, Tallinna Haridusameti üldhariduse osakonna peaspetsialist Urve Raudsepp-Alt, Krabi põhikooli direktor Ale Sprenk, Põlva Maavalitsuse haridus-, kultuuri- ja sotsiaalosakonna juhataja Peeter Aas

  7. Uued CO₂ kasukad vanadele majadele / Elari Udam ; intervjueerinud Margit Mutso ; kommenteerinud Peeter Pere, Oliver Orro, Jaak Huimerind

    Index Scriptorium Estoniae

    Udam, Elari, 1968-

    2011-01-01

    Vabade CO₂ kvootide müügist laekunud raha eest renoveeritakse energiatõhusaks 480 Eesti hoonet. Projekti juhib Riigi Kinnisvara AS. Teemat selgitab RKASi juhatuse liige ja haldusdirektor Elari Udam, kommenteerivad Eesti Arhitektide Liidu esimees Peeter Pere, aseesimees Jaak Huimerind ja arhitektuuriajaloolane Oliver Orro

  8. Tüür, Erkki-Sven: Requiem in memoriam Peeter Lilje / Christoph Schlüren

    Index Scriptorium Estoniae

    Schlüren, Christoph

    1996-01-01

    Uuest heliplaadist "Tüür, Erkki-Sven: Requiem in memoriam Peeter Lilje. Passion. Illusion. Architectonics VI. Crystallisatio. Kaia Urb (sopran), Tiit Kogermann (tenor), Estnische Philharmonischer Kammerchor, Kammerorchester Tallinn, Tõnu Kaljuste. ECM/Polygram CD 449 459-2 (WD:64'19'')DDD

  9. Eesti idapiiri läbilaskevõimel on kolmekordne varu / Peeter Pärn ; intervjueerinud Tanel Raig

    Index Scriptorium Estoniae

    Pärn, Peeter

    2009-01-01

    Eesti Rahvusvahelise Autovedajate Assotsiatsiooni president ja NBI Ekspeditsiooni juht Peeter Pärn vastab küsimustele, mis puudutavad ooteaegade lühendamist piiril, elektroonse piirijärjekorra süsteemi kasutamist, Eesti idapiiri läbilaskevõimet, uute piiriületuspunktide rajamist Eesti-Vene piirile ning autotranspordi teenuste nõudlust. Tabel, graafik

  10. Vanemuise teatri juurdeehituse kutsutud arhitektuurikonkurss = Invitational architecture competition for the addition to the Vanemuine theatre / Peeter Pere

    Index Scriptorium Estoniae

    Pere, Peeter, 1957-

    2009-01-01

    Arhitektuurikonkursi žürii liige Peeter Pere võistluse eesmärgist, konkursil 1. preemia pälvinud Jüri Okase ja Marika Lõokese (Okas & Lõoke) võistlustööst ja konkursil osalenud arhitektuuribüroode Kolm Pluss Üks, Kavakava ja Lunge & Ko võistlustöödest

  11. Kes on pidur? / Peeter Tammistu, Kerly Lillemets, Valdo Kalm, Vello Tamm ; intervjueerinud Villy Paimets ; kommenteerinud Jürgen Ligi

    Index Scriptorium Estoniae

    2010-01-01

    Vestlusringis osalevad majandusanalüütik Peeter Tammistu, TTÜ doktorant Kerly Lillemets, Eesti Telekomi juhatuse esimees Valdo Kalm ja Lions-klubide Eesti piirkonna kuberner Vello Tamm. Arutatakse ettepanekut lubada füüsilisest isikust ettevõtjatel, kelle aastakäive jääb alla 250 000 krooni, minna üle tegevusloamaksule

  12. Does the Homograft for RVOT Reconstruction in Ross: Patients Fare Better than for Non-Ross Patients? A Single-Center Experience.

    Science.gov (United States)

    Ruzmetov, Mark; Geiss, Dale M; Shah, Jitendra J; Fortuna, Randall S; Welke, Karl F

    2015-07-01

    In patients undergoing the Ross procedure, the right ventricular outflow tract (RVOT) conduit is inserted in an orthotopic position rather than in the more heterotopic position used in the repair of complex congenital RVOT obstruction. The study aim was to compare the authors' institutional mid-term experience of large-sized homografts (>19 mm) in patients with Ross and non-Ross RVOT reconstructions. The outcome was reviewed of all homografts implanted for Ross (n = 72) or non-Ross (n = 64) RVOT reconstruction at a single center between 1993 and 2012. Echocardiographic data were reviewed to evaluate valve performance. Homograft dysfunction was defined as RVOT obstruction with peak echo-Doppler gradient >40 mmHg and/or grade >III/IV conduit valve regurgitation. Homograft failure was defined as the need for conduit replacement or catheter or surgical reintervention. The age, body weight, conduit diameter and previous surgery were significantly higher in patients with Ross compared to the non-Ross group (p = 0.002, 0.003 and Ross, n = 17; non-Ross, n = 18). The data acquired showed actuarial survival, freedom from conduit dysfunction and conduit failure to be similar in both cohorts. Freedom from any type of reoperation was worse for the Ross group (58%) than for the non-Ross group (72%) (p = 0.05). During the first 15 years after Ross or non-Ross pulmonary homograft implantation, the survival rate, freedom from failure and dysfunction, and RVOT gradient were statistically similar. Freedom from any type of reoperation was significantly higher in the non-Ross group, however.

  13. 75 FR 32802 - Certificate of Alternative Compliance for the Offshore Supply Vessel ROSS CANDIES

    Science.gov (United States)

    2010-06-09

    ... Compliance for the Offshore Supply Vessel ROSS CANDIES AGENCY: Coast Guard, DHS. ACTION: Notice. SUMMARY: The... vessel ROSS CANDIES as required by 33 U.S.C. 1605(c) and 33 CFR 81.18. DATES: The Certificate of... the offshore supply vessel ROSS CANDIES, O.N. 1222260. Full compliance with 72 COLREGS [[Page 32803...

  14. 76 FR 71082 - Strata Energy, Inc., Ross Uranium Recovery Project; New Source Material License Application...

    Science.gov (United States)

    2011-11-16

    ... NUCLEAR REGULATORY COMMISSION [Docket No. 40-9091; NRC-2011-0148] Strata Energy, Inc., Ross...) submitted an application for a new source material license for the Ross Uranium Recovery Project to be... Leach Uranium Milling Facilities (ISR GEIS) for a new source material license for the Ross Uranium...

  15. 76 FR 81962 - Final Environmental Impact Statement for General Management Plan, Ross Lake National Recreation...

    Science.gov (United States)

    2011-12-29

    ... Environmental Impact Statement for General Management Plan, Ross Lake National Recreation Area, North Cascades... a final environmental impact statement (Final EIS) for the proposed General Management Plan for Ross Lake National Recreation Area (Ross Lake NRA) in Washington State. This Final EIS describes and...

  16. 77 FR 56859 - Federal Register Notification of Redesignation of Potential Wilderness as Wilderness, Ross Lake...

    Science.gov (United States)

    2012-09-14

    ... Register Notification of Redesignation of Potential Wilderness as Wilderness, Ross Lake National Recreation..., Ross Lake National Recreation Area, and Lake Chelan National Recreation Area as the Stephen Mather... acres of potential wilderness within Ross Lake National Recreation Area, including approximately 1,667...

  17. 76 FR 55404 - Announcement of Funding Awards Resident Opportunity and Self-Sufficiency (ROSS)-Service...

    Science.gov (United States)

    2011-09-07

    ... Resident Opportunity and Self- Sufficiency (ROSS)-Service Coordinators, Program Fiscal Year (FY) 2010...-Sufficiency (ROSS)-Service Coordinators Program. This announcement contains the consolidated names and addresses of the award recipients for this year under the ROSS- Service Coordinators Program. FOR FURTHER...

  18. Rosse Franjepoot Phalaropus fulicaria fourageert in plastic soep

    NARCIS (Netherlands)

    Franeker, van J.A.; Janinhoff, N.; Verdaat, J.P.

    2010-01-01

    Uit eerdere rapportages is gebleken dat franjepoten vaak plastic in de maag hebben (Tabel 1). Het onderscheid tussen goed voedsel en gevaarlijke rommel in vervuilde stroomnaden is ook voor Rosse Franjepoten blijkbaar niet altijd duidelijk. Mogelijk kunnen franjepoten, net als sommige andere

  19. Setting the scientistic cat among the humanist pigeons Don Ross ...

    African Journals Online (AJOL)

    implications of cognitive science and economics for each other. Ross makes neoclassical economics central to the unification of the behavioural sciences, and defends its fundamental health against its critics. He locates the source of the empirical and conceptual problems besetting neoclassical economics in the mistaken ...

  20. R. E. van der Ross (1921–2017)

    African Journals Online (AJOL)

    19 Mrt. 2018 ... Sedert sy jeug het Richard Ernest van der Ross. (1921–2017) 'n belangrike rol in die breë Kaapse ge- meenskap gespeel. Hy het hom onderskei as 'n anti- apartheidsaktivis, 'n opvoedkundige, 'n geskied- skrywer en openbare intellektueel, 'n vakbondmens,. 'n gemeenskapsbouer, 'n maatskappydirekteur ...

  1. Ross Ice Shelf and the Queen Maude Mounains, Antarctica

    Science.gov (United States)

    1991-01-01

    Part of the Ross Ice Shelf and the Queen Maude Mounains of Antarctica (55.5N, 178.0W) are in the background of this scene, oriented toward the south. Low stratocumulus clouds are predominant throughout most of the scene.

  2. Outcomes of Reintervention on the Autograft After Ross Procedure.

    Science.gov (United States)

    Kumar, S Ram; Bansal, Neeraj; Wells, Winfield J; Starnes, Vaughn A

    2016-11-01

    After a Ross procedure, a small subset of patients requires reintervention for autograft dilatation or valve insufficiency. We sought to determine the indications, nature, and outcomes of autograft reinterventions in the left ventricular outflow tract after a Ross procedure. We retrospectively reviewed the charts of 316 consecutive patients, age 4 days to 70 years, who underwent a Ross procedure at our institution. Of these, 47 patients (15%) required autograft reintervention during a median follow-up of 8.2 years. Forty-seven patients, median age 26 years (interquartile range [IQR], 14.4 to 44.8 years), 32 (68%) men, required autograft reintervention a median 5.5 years (IQR, 1.8 to 9.4 years) after a Ross procedure. In 47% (22 of 47 patients), the autograft valve could be salvaged (15 valve-sparing aortic replacements, 7 valve repairs). The remaining 53% underwent replacement of the root (10 mechanical, 5 homograft) or valve alone (7 mechanical, 3 bioprosthetic). Twenty patients presented without autograft root dilatation 1 year (IQR, 0.5 to 2.9 years) after Ross. Fifteen of them (75%) required valve replacement. The 27 patients who demonstrated root dilatation presented 6.9 years (IQR, 4.5 to 9.7 years; p Ross, and 17 (63%) of these valves could be spared (p = 0.01). There was no surgical mortality and 5 (11%) major morbidity events. Patients were followed up for 4.9 years (IQR, 2.1 to 7 years) after left ventricular outflow tract reintervention. For patients whose autograft valve could be spared, 3-, 5-, and 8-year freedom from valve replacement was 92%, 86%, and 86%, respectively. At last follow-up, only 1 patient had greater than mild aortic insufficiency, and all but 1 had normal ejection fraction. Autograft reintervention after a Ross appears to follow a bimodal distribution. Patients with primary autograft leaflet problems tend to present early without root dilatation and frequently require valve replacement. The autograft valve can be salvaged in the

  3. Climatology and decadal variability of the Ross Sea shelf waters

    Directory of Open Access Journals (Sweden)

    A. Russo

    2011-06-01

    Full Text Available The World Ocean Database 2001 data located in the Ross Sea (named WOD01 and containing data in this region since 1928 are merged with recent data collected by the Italian expeditions (CLIMA dataset in the period November 1994-February 2004 in the same area. From this extended dataset, austral summer climatologies of the main Ross Sea subsurface, intermediate and bottom water masses: High Salinity Shelf Water (HSSW, Low Salinity Shelf Water (LSSW, Ice Shelf Water (ISW and Modified Circumpolar Deep Water (MCDW have been drawn. The comparison between the WOD01_1994 climatologies (a subset of the WOD01 dataset until April 1994 and the CLIMA ones for the period 1994/95-2003/04 showed significant changes occurred during the decade. The freshening of the Ross Sea shelf waters which occurred during the period 1960-2000, was confirmed by our analysis in all the main water masses, even though with a spatially varying intensity. Relevant variations were found for the MCDW masses, which appeared to reduce their presence and to deepen; this can be ascribed to the very limited freshening of the MCDW core, which allowed an increased density with respect to the surrounding waters. Variations in the MCDW properties and extension could have relevant consequences, e.g. a decreased Ross Ice Shelf basal melting or a reduced supply of nutrients, and may also be indicative of a reduced thermohaline circulation within the Ross Sea. Shelf Waters (SW having neutral density γn > 28.7 Kg m-3, which contribute to form the densest Antarctic Bottom Waters (AABW, showed a large volumetric decrease in the 1994/95-2003/04 decade, most likely as a consequence of the SW freshening.

  4. Isad ja tütred, isad ja pojad / Jüri Ross, Kristine Ross, Fjodor Berman ...[jt.] ; üles kirjutanud Jaana Liigand

    Index Scriptorium Estoniae

    2011-01-01

    Büroomaailma juht Jüri Ross ja turundusdirektor Kristine Ross, BLRT Grupi omanik Fjodor Berman ja BLRT Grupi tütarfirma Refonda tegevdirektor Mark Berman, Saaremaa Laevakompanii ja paljude firmade omanik Vjatšeslav Leedo ja Mosaiigi kohviku omanik Katrin Leedo ärist, juhtimisest ja omavahelistest suhetest

  5. The Externally Supported Ross Operation: Early Outcomes and Intermediate Follow-Up.

    Science.gov (United States)

    Jacobsen, Roni M; Earing, Michael G; Hill, Garick D; Barnes, Michael; Mitchell, Michael E; Woods, Ronald K; Tweddell, James S

    2015-08-01

    The externally supported Ross (supported Ross), consisting of a Dacron (DuPont, Wilmington, DE) graft to support the neoaortic root, has been used in adolescent and adult patients to prevent neoaortic dilatation. Outcomes after the supported Ross technique were compared with the Ross procedure using the standard aortic root replacement technique (standard Ross). This was a retrospective analysis of 36 adolescent and young adult patients who underwent the Ross procedure between 1992 and 2013. The outcomes of supported Ross procedures in 26 patients were compared with the Ross procedure in 10 patients. End points included survival, neoaortic root dilatation, development of neoaortic regurgitation, and the need for reintervention. The median age at operation was 14 years (range, 11 to 31 years), and indications for the operation were mixed lesions (47%), followed by aortic regurgitation (42%) and stenosis (11%). There were no early deaths. The mean follow-up was 2.2 years (range, 1 to 11 years). At the 1-year (p = 0.01) and 3-year (p Ross cohort had a smaller neoaortic root z-score. Neither cohort had a large number of patients with significant neoaortic regurgitation, with 1 patient in the supported cohort compared with 3 patients in the standard cohort. Overall, 4 patients (40%) in the standard Ross cohort had required reintervention, including 3 directed at the neoaortic root. One patient in the supported Ross cohort required early reintervention for revision of the right coronary artery. At intermediate follow-up, patients who underwent the supported Ross technique were less likely to have neoaortic root dilatation compared with patients who underwent a standard Ross procedure. Further studies are needed to evaluate the long-term durability of this technique, particularly in regards to the development of significant aortic regurgitation, the rate of reintervention, and application to younger and smaller patients. Copyright © 2015 The Society of Thoracic Surgeons

  6. A generalization of the Ross-Thomas slope theory

    OpenAIRE

    Odaka, Yuji

    2013-01-01

    We give a formula for the Donaldson--Futaki invariants of certain type of semi test configurations, which essentially generalizes the Ross--Thomas slope theory [28]. The positivity (resp. non-negativity) of those ``a priori special'' Donaldson--Futaki invariants implies K-stability (resp. K-semistability). As an application, we prove the K-(semi)stability of certain polarized varieties with semi-log-canonical singularities, which generalizes some results of [28].

  7. Ross sea ice motion, area flux, and deformation

    Science.gov (United States)

    kwok, Ron

    2005-01-01

    The sea ice motion, area export, and deformation of the Ross Sea ice cover are examined with satellite passive microwave and RADARSAT observations. The record of high-resolution synthetic aperture radar (SAR) data, from 1998 and 2000, allows the estimation of the variability of ice deformation at the small scale (10 km) and to assess the quality of the longer record of passive microwave ice motion. Daily and subdaily deformation fields and RADARSAT imagery highlight the variability of motion and deformation in the Ross Sea. With the passive microwave ice motion, the area export at a flux gate positioned between Cape Adare and Land Bay is estimated. Between 1992 and 2003, a positive trend can be seen in the winter (March-November) ice area flux that has a mean of 990 x 103 km2 and ranges from a low of 600 x 103 km2 in 1992 to a peak of 1600 x 103 km2 in 2001. In the mean, the southern Ross Sea produces almost twice its own area of sea ice during the winter. Cross-gate sea level pressure (SLP) gradients explain 60% of the variance in the ice area flux. A positive trend in this gradient, from reanalysis products, suggests a 'spinup' of the Ross Sea Gyre over the past 12 yr. In both the NCEP-NCAR and ERA-40 surface pressure fields, longer-term trends in this gradient and mean SLP between 1979 and 2002 are explored along with positive anomalies in the monthly cross-gate SLP gradient associated with the positive phase of the Southern Hemisphere annular mode and the extrapolar Southern Oscillation.

  8. Note On The Ross Sea Shelf Water Downflow Processes (antarctica)

    Science.gov (United States)

    Bergamasco, A.; Defendi, V.; Spezie, G.; Budillon, G.; Carniel, S.

    In the framework of the CLIMA Project of the Italian National Program for Research in Antarctica, three different experimental data sets were acquired along the continental shelf break; two of them (in 1997 and 2001) close to Cape Adare, the 1998 one in the middle of the Ross Sea (i.e. 75 S, 177 W). The investigations were chosen in order to explore the downslope flow of the bottom waters produced in the Ross Sea, namely the High Salinity Shelf Water (HSSW, the densest water mass of the southern ocean coming from its formation site in the polynya region in Terra Nova bay), and the Ice Shelf Water (ISW, originated below the Ross Ice Shelf and outflowing northward). Both bottom waters spill over the shelf edge and mix with the Circumpolar Deep Water (CDW) contributing to the formation of the Antarctic Bottom Waters (AABW). Interpreting temperature, salinity and density maps in terms of cascading processes, both HSSW and ISW overflows are evidenced during, respectively, 1997 and 1998. During the 2001 acquisition there is no presence of HSSW along the shelf break, nevertheless distribution captures the evidence of a downslope flow process.

  9. The Ross Sea Dipole - temperature, snow accumulation and sea ice variability in the Ross Sea region, Antarctica, over the past 2700 years

    Science.gov (United States)

    Bertler, Nancy A. N.; Conway, Howard; Dahl-Jensen, Dorthe; Emanuelsson, Daniel B.; Winstrup, Mai; Vallelonga, Paul T.; Lee, James E.; Brook, Ed J.; Severinghaus, Jeffrey P.; Fudge, Taylor J.; Keller, Elizabeth D.; Baisden, W. Troy; Hindmarsh, Richard C. A.; Neff, Peter D.; Blunier, Thomas; Edwards, Ross; Mayewski, Paul A.; Kipfstuhl, Sepp; Buizert, Christo; Canessa, Silvia; Dadic, Ruzica; Kjær, Helle A.; Kurbatov, Andrei; Zhang, Dongqi; Waddington, Edwin D.; Baccolo, Giovanni; Beers, Thomas; Brightley, Hannah J.; Carter, Lionel; Clemens-Sewall, David; Ciobanu, Viorela G.; Delmonte, Barbara; Eling, Lukas; Ellis, Aja; Ganesh, Shruthi; Golledge, Nicholas R.; Haines, Skylar; Handley, Michael; Hawley, Robert L.; Hogan, Chad M.; Johnson, Katelyn M.; Korotkikh, Elena; Lowry, Daniel P.; Mandeno, Darcy; McKay, Robert M.; Menking, James A.; Naish, Timothy R.; Noerling, Caroline; Ollive, Agathe; Orsi, Anaïs; Proemse, Bernadette C.; Pyne, Alexander R.; Pyne, Rebecca L.; Renwick, James; Scherer, Reed P.; Semper, Stefanie; Simonsen, Marius; Sneed, Sharon B.; Steig, Eric J.; Tuohy, Andrea; Ulayottil Venugopal, Abhijith; Valero-Delgado, Fernando; Venkatesh, Janani; Wang, Feitang; Wang, Shimeng; Winski, Dominic A.; Winton, V. Holly L.; Whiteford, Arran; Xiao, Cunde; Yang, Jiao; Zhang, Xin

    2018-02-01

    High-resolution, well-dated climate archives provide an opportunity to investigate the dynamic interactions of climate patterns relevant for future projections. Here, we present data from a new, annually dated ice core record from the eastern Ross Sea, named the Roosevelt Island Climate Evolution (RICE) ice core. Comparison of this record with climate reanalysis data for the 1979-2012 interval shows that RICE reliably captures temperature and snow precipitation variability in the region. Trends over the past 2700 years in RICE are shown to be distinct from those in West Antarctica and the western Ross Sea captured by other ice cores. For most of this interval, the eastern Ross Sea was warming (or showing isotopic enrichment for other reasons), with increased snow accumulation and perhaps decreased sea ice concentration. However, West Antarctica cooled and the western Ross Sea showed no significant isotope temperature trend. This pattern here is referred to as the Ross Sea Dipole. Notably, during the Little Ice Age, West Antarctica and the western Ross Sea experienced colder than average temperatures, while the eastern Ross Sea underwent a period of warming or increased isotopic enrichment. From the 17th century onwards, this dipole relationship changed. All three regions show current warming, with snow accumulation declining in West Antarctica and the eastern Ross Sea but increasing in the western Ross Sea. We interpret this pattern as reflecting an increase in sea ice in the eastern Ross Sea with perhaps the establishment of a modern Roosevelt Island polynya as a local moisture source for RICE.

  10. The Ross Sea Dipole – temperature, snow accumulation and sea ice variability in the Ross Sea region, Antarctica, over the past 2700 years

    Directory of Open Access Journals (Sweden)

    N. A. N. Bertler

    2018-02-01

    Full Text Available High-resolution, well-dated climate archives provide an opportunity to investigate the dynamic interactions of climate patterns relevant for future projections. Here, we present data from a new, annually dated ice core record from the eastern Ross Sea, named the Roosevelt Island Climate Evolution (RICE ice core. Comparison of this record with climate reanalysis data for the 1979–2012 interval shows that RICE reliably captures temperature and snow precipitation variability in the region. Trends over the past 2700 years in RICE are shown to be distinct from those in West Antarctica and the western Ross Sea captured by other ice cores. For most of this interval, the eastern Ross Sea was warming (or showing isotopic enrichment for other reasons, with increased snow accumulation and perhaps decreased sea ice concentration. However, West Antarctica cooled and the western Ross Sea showed no significant isotope temperature trend. This pattern here is referred to as the Ross Sea Dipole. Notably, during the Little Ice Age, West Antarctica and the western Ross Sea experienced colder than average temperatures, while the eastern Ross Sea underwent a period of warming or increased isotopic enrichment. From the 17th century onwards, this dipole relationship changed. All three regions show current warming, with snow accumulation declining in West Antarctica and the eastern Ross Sea but increasing in the western Ross Sea. We interpret this pattern as reflecting an increase in sea ice in the eastern Ross Sea with perhaps the establishment of a modern Roosevelt Island polynya as a local moisture source for RICE.

  11. Downslope flow across the Ross Sea shelf break (Antarctica)

    Science.gov (United States)

    Bergamasco, A.; Budillon, G.; Carniel, S.; Defendi, V.; Meloni, R.; Paschini, E.; Sclavo, M.; Spezie, G.

    2003-12-01

    The analysis of some high-resolution hydrological data sets acquired during the 1997, 1998, 2001 and 2003 austral summers across the Ross Sea continental shelf break are here presented. The main focus of these cruises carried out in the framework of the Italian National Antarctic Program was the investigation of the downslope flow of the dense waters originated inside the Ross Sea. Such dense waters, flow near the bottom and, reaching the continental shelf break, ventilate the deep ocean. Two Antarctic continental shelf mechanisms can originate dense and deep waters. The former mechanism involves the formation, along the Victoria Land coasts, of a dense and saline water mass, the High Salinity Shelf Water (HSSW). The HSSW formation is linked to the rejection of salt into the water column as sea ice freezes, especially during winter, in the polynya areas, where the ice is continuously pushed offshore by the strong katabatic winds. The latter one is responsible of the formation of a supercold water mass, the Ice Shelf Water (ISW). The salt supplied by the HSSW recirculated below the Ross Ice Shelf, the latent heat of melting and the heat sink provided by the Ross Ice Shelf give rise to plumes of ISW, characterized by temperatures below the sea-surface freezing point. The dense shelf waters migrate to the continental shelf-break, spill over the shelf edge and descend the continental slope as a shelf-break gravity current, subject to friction and possibly enhanced by topographic channelling. Friction, in particular, breaks the constraint of potential vorticity conservation, counteracting the geostrophic tendency for along slope flow. The density-driven downslope motion or cascading entrains ambient water, namely the lower layer of the CDW, reaches a depth where density is the same and spreads off-slope. In fact, the cascading event is inhibited by friction without entrainment. The downslope processes are important for the ocean and climate system because they play a

  12. Albert Ross Tilley: The legacy of a Canadian plastic surgeon

    OpenAIRE

    Mowbrey, Kevin

    2013-01-01

    The present article chronicles the career of Dr Albert Ross Tilley, one of the most important Canadian plastic surgeons of the 20th century. Tilley is most well known for his innovations of burn management during World War II and his treatment of a group of burn patients known affectionately as the ‘Guinea Pig Club’. In addition to the superb surgical skills he applied to the physical wounds of his patients, Tilley was also a pioneer of caring for the emotional and psychological afflictions s...

  13. Wiener Chaos and the Cox-Ingersoll-Ross model

    OpenAIRE

    Grasselli, M. R.; Hurd, T. R.

    2003-01-01

    In this we paper we recast the Cox--Ingersoll--Ross model of interest rates into the chaotic representation recently introduced by Hughston and Rafailidis. Beginning with the ``squared Gaussian representation'' of the CIR model, we find a simple expression for the fundamental random variable X. By use of techniques from the theory of infinite dimensional Gaussian integration, we derive an explicit formula for the n-th term of the Wiener chaos expansion of the CIR model, for n=0,1,2,.... We th...

  14. Jimmy, Sinclair, and Jim: on the biographical trail of James Sinclair Ross Jimmy, Sinclair, and Jim: on the biographical trail of James Sinclair Ross

    Directory of Open Access Journals (Sweden)

    John J. O'Connor

    2008-04-01

    Full Text Available The deaths of Earle Birney and Robertson Davies late in 1995 reminded readers of Canadian literature that the old order—those writers born before the First World War—was quickly passing. Of the major figures born in the early years of this century (Birney, Davies, Callaghan, MacLennan, Ross, only Ross was still living at the beginning of 1996, albeit in very poor health in a nursing home in Vancouver. The deaths of Earle Birney and Robertson Davies late in 1995 reminded readers of Canadian literature that the old order—those writers born before the First World War—was quickly passing. Of the major figures born in the early years of this century (Birney, Davies, Callaghan, MacLennan, Ross, only Ross was still living at the beginning of 1996, albeit in very poor health in a nursing home in Vancouver.

  15. Relevance of the Kübler-Ross model to the post-injury responses of ...

    African Journals Online (AJOL)

    Relevance of the Kübler-Ross model to the post-injury responses of competitive athletes. J van der Poel, P Nel. Abstract. Attempts to explain and/or predict the post-injury responses of competitive athletes have relied upon current models of grief. Kübler-Ross's stage model (1969) has been particularly popular among sports ...

  16. 76 FR 22338 - Proposed Fort Ross-Seaview Viticultural Area; Comment Period Reopening

    Science.gov (United States)

    2011-04-21

    ... May 9, 2005, from all interested persons. In response to a request from a local wine industry member... the Fort Ross-Seaview viticultural area. Two local wine industry members supported the petition... expressing concern about the potential effect of the proposed viticultural area on his ``Fort Ross'' brand...

  17. Giving to Excellence: Generating Philanthropic Support for UK Higher Education. Ross-CASE Report 2016

    Science.gov (United States)

    Jain, Yashraj

    2016-01-01

    This report presents findings from the 2016 Ross-CASE Survey of Philanthropic Giving to Universities in UK. The project was conducted by CASE Europe and funded by HEFCE and the Ross-Group. This year's survey comes at a time of great change for the UK charity sector. The historical trend data of previous surveys will be invaluable in helping…

  18. Critiquing Research Methodology: Comments on Broader Concerns about Complex Statistical Studies. A Response to Ross

    Science.gov (United States)

    Stapleton, Paul

    2006-01-01

    Steven Ross's (2005) recent paper empirically measuring the efficacy of formative assessment compared to the summative variety found that the former produced positive effects on some aspects of language learning. In this critique, it is contended that Ross's study is flawed because his two groups of learners, one receiving summative assessment and…

  19. Mortimer Hills pegmatite uranium prospect: a Rossing-type uranium deposit in the Gascoyne Province

    International Nuclear Information System (INIS)

    Carter, J.D.

    1984-01-01

    A uraninite-bearing pegmatite of large dimensions in the Gascoyne Province is described. The pegmatite is compared with the Rossing uranium ore body of South West Africa and the two are shown to have common characteristics. Exploration recommendations for Rossing-type uranium mineralization in the Gascoyne Province are made

  20. High-Resolution Body Wave Tomography of the Ross Sea Embayment, Antarctica

    Science.gov (United States)

    White-Gaynor, A.; Nyblade, A.; Wiens, D. A.; Aster, R. C.; Gerstoft, P.; Bromirski, P. D.; Stephen, R. A.

    2017-12-01

    The West Antarctic Rift System (WARS) is one of the least understood continental rift system on the planet. The 1000 km wide WARS includes the Ross Sea Embayment between Marie Byrd Land and the Transantarctic Mountains (TAMS). Active volcanism on Ross Island continues to challenge our understanding of the generally quiescent rift system. Previous regional-scale body wave tomographic investigations have identified areas of low seismic wave speeds to 200 km depth beneath Ross Island. However, the spatial extent of the low velocity structure across the entirety of the WARS remains poorly constrained due to the insufficient resolution of upper mantle structure under the Ross Sea Embayment away from Ross Island. We utilize teleseismic P wave observations recorded on the RIS/DRIS network, which consists of 34 seismometers deployed across the Ross Ice Shelf, along with data from nearby POLENET and TAMSEIS stations to better resolve this region. Relative P wave travel time residuals from 1300 teleseismic events, obtained using a multichannel cross-correlation method, have been inverted for a seismic velocity model of the upper mantle throughout the Ross Sea Embayment. Our results suggest that the low wave speed structure under Ross Island extends roughly halfway across the Embayment and south along the Transantarctic Mountains. This observation is consistent with a two-phase rifting history for the WARS in which broad, late Cretaceous rifting between Marie Byrd Land and the TAMS transitioned to more focused rifting along the TAMS margin in the Cenozoic.

  1. 75 FR 69432 - Ross Bachofer v. Calpine Corporation; Notice of Complaint

    Science.gov (United States)

    2010-11-12

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. EL11-3-000] Ross Bachofer v. Calpine Corporation; Notice of Complaint November 4, 2010. Take notice that on October 26, 2010, pursuant... Federal Power Act, 16 U.S.C. 2824c, Ross Bachofer (Complainant) filed a complaint against Calpine...

  2. 77 FR 30320 - General Management Plan/Environmental Impact Statement, Ross Lake National Recreation Area, North...

    Science.gov (United States)

    2012-05-22

    ... DEPARTMENT OF THE INTERIOR National Park Service [NPS-PWR-PWRO-0411-10062: 9082-NOCA-409] General Management Plan/Environmental Impact Statement, Ross Lake National Recreation Area, North Cascades National... Impact Statement for the new General Management Plan (GMP) for Ross Lake National Recreation Area, part...

  3. Transcatheter Pulmonary Valve Replacement for Right Ventricular Outflow Tract Conduit Dysfunction After the Ross Procedure

    DEFF Research Database (Denmark)

    Gillespie, Matthew J; McElhinney, Doff B; Kreutzer, Jacqueline

    2015-01-01

    BACKGROUND: Right ventricular outflow tract (RVOT) conduit dysfunction is a limitation of the Ross procedure. Transcatheter pulmonary valve replacement (TPVR) could alter the impact of conduit dysfunction and the risk-benefit balance for the Ross procedure. METHODS: Retrospective review...... of databases from 3 prospective Melody TPV (Medtronic Inc, Minneapolis, MN) trials. RESULTS: Among 358 patients who were catheterized with the intent to implant a Melody TPV for RVOT conduit stenosis or regurgitation (PR) as part of 3 prospective multicenter studies, 67 (19%) had a prior Ross procedure...... early outcomes and durable valve function in the majority of Ross patients. Recurrent RVOT obstruction associated with stent fracture was the main reason for reintervention. Coronary compression is not uncommon in Ross patients and should be assessed prior to TPVR....

  4. The Oceanography and Ecology of the Ross Sea

    Science.gov (United States)

    Smith, Walker O.; Ainley, David G.; Arrigo, Kevin R.; Dinniman, Michael S.

    2014-01-01

    The continental shelf of the Ross Sea exhibits substantial variations in physical forcing, ice cover, and biological processes on a variety of time and space scales. Its circulation is characterized by advective inputs from the east and exchanges with off-shelf regions via the troughs along the northern portions. Phytoplankton biomass is greater there than anywhere else in the Antarctic, although nitrate is rarely reduced to levels below 10 μmol L-1. Overall growth is regulated by irradiance (via ice at the surface and by the depths of the mixed layers) and iron concentrations. Apex predators reach exceptional abundances, and the world's largest colonies of Adélie and emperor penguins are found there. Krill are represented by two species (Euphausia superba near the shelf break and Euphausia crystallorophias throughout the continental shelf region). Equally important and poorly known is the Antarctic silverfish (Pleuragramma antarcticum), which is also consumed by most upper-trophic-level predators. Future changes in the Ross Sea environment will have profound and unpredictable effects on the food web.

  5. Seasonal and diurnal calling patterns of Ross and leopards

    Science.gov (United States)

    Rogers, Tracey L.; Rowney, Gayle A.; Ciaglia, Michaela B.; Cato, Douglas H.

    2005-09-01

    The temporal calling patterns of two Antarctic pack ice seals, the leopard and Ross seal, were examined. This included seasonal onset and decline of calling (coinciding with their breeding season) as well as diurnal changes. Understanding of calling behavior has important implications for acoustic surveying, since this allows the number of calls to be related to an index of the number of animals present and to estimate abundance. The monthly changes in diurnal calling and haul-out patterns (measured via satellite telemetry) were compared. Underwater acoustic recordings were made between 14 October 2003 and 10 January 2004 off Mawson, Eastern Antarctica (660 44.243S and 690 48.748E). Recordings were made using an Acoustics Recording Package (ARP by Dr. John Hildebrand, Scripps Institute of Oceanography, La Jolla, CA) which is designed to sit on the seafloor and passively record acoustic signals. The package was deployed at a depth of 1320.7 m. The sampling rate was 500 Hz and the effective bandwidth from 10 to 250 Hz, covering the bandwidth of only the low-frequency calls of the Ross and leopard seal.

  6. 78 FR 19330 - Supplemental Environmental Impact Statement for the Ross In-Situ Uranium Recovery Project in...

    Science.gov (United States)

    2013-03-29

    ... Ross In-Situ Uranium Recovery Project in Crook County, Wyoming AGENCY: Nuclear Regulatory Commission... Commission (NRC) for a new source materials license for the proposed Ross In-Situ Uranium Recovery (ISR) Project (Ross Project) proposed to be located in Crook County, Wyoming. The NRC is issuing for public...

  7. 76 FR 41308 - Strata Energy, Inc., Ross In Situ Recovery Uranium Project, Crook County, WY; Notice of Materials...

    Science.gov (United States)

    2011-07-13

    ..., Inc., Ross In Situ Recovery Uranium Project, Crook County, WY; Notice of Materials License Application...-4737, or by e-mail to [email protected] . The Ross In Situ Recovery Uranium Project License... source and byproduct materials license at its Ross In Situ Recovery Uranium Project site located in Crook...

  8. 78 FR 12357 - Brockway Mould, Inc., a Division of Ross International Ltd. Including Robert Lerch From BJR...

    Science.gov (United States)

    2013-02-22

    ... Division of Ross International Ltd. Including Robert Lerch From BJR Trucking, Brockport, PA; Amended..., applicable to workers and former workers of Brockway Mould, Inc., a division of Ross International Ltd... Brockway Mould, Inc., a division of Ross International Ltd., including Robert Lerch from BJR Trucking...

  9. 75 FR 31805 - Announcement of Funding Awards for the Resident Opportunity and Self-Sufficiency (ROSS)-Service...

    Science.gov (United States)

    2010-06-04

    ... Awards for the Resident Opportunity and Self-Sufficiency (ROSS)--Service Coordinators Program for Fiscal... and Self-Sufficiency (ROSS) Service Coordinators Program funding for Fiscal Year 2009. This... concerning the FY 2009 Resident Opportunity and Self-Sufficiency (ROSS) Service Coordinators Program awards...

  10. Variability and Trends in Sea Ice Extent and Ice Production in the Ross Sea

    Science.gov (United States)

    Comiso, Josefino; Kwok, Ronald; Martin, Seelye; Gordon, Arnold L.

    2011-01-01

    Salt release during sea ice formation in the Ross Sea coastal regions is regarded as a primary forcing for the regional generation of Antarctic Bottom Water. Passive microwave data from November 1978 through 2008 are used to examine the detailed seasonal and interannual characteristics of the sea ice cover of the Ross Sea and the adjacent Bellingshausen and Amundsen seas. For this period the sea ice extent in the Ross Sea shows the greatest increase of all the Antarctic seas. Variability in the ice cover in these regions is linked to changes in the Southern Annular Mode and secondarily to the Antarctic Circumpolar Wave. Over the Ross Sea shelf, analysis of sea ice drift data from 1992 to 2008 yields a positive rate of increase in the net ice export of about 30,000 sq km/yr. For a characteristic ice thickness of 0.6 m, this yields a volume transport of about 20 cu km/yr, which is almost identical, within error bars, to our estimate of the trend in ice production. The increase in brine rejection in the Ross Shelf Polynya associated with the estimated increase with the ice production, however, is not consistent with the reported Ross Sea salinity decrease. The locally generated sea ice enhancement of Ross Sea salinity may be offset by an increase of relatively low salinity of the water advected into the region from the Amundsen Sea, a consequence of increased precipitation and regional glacial ice melt.

  11. Albert Ross Tilley: The legacy of a Canadian plastic surgeon.

    Science.gov (United States)

    Mowbrey, Kevin

    2013-01-01

    The present article chronicles the career of Dr Albert Ross Tilley, one of the most important Canadian plastic surgeons of the 20th century. Tilley is most well known for his innovations of burn management during World War II and his treatment of a group of burn patients known affectionately as the 'Guinea Pig Club'. In addition to the superb surgical skills he applied to the physical wounds of his patients, Tilley was also a pioneer of caring for the emotional and psychological afflictions suffered by many airmen of World War II. As one of the founding fathers of the Canadian Society of Plastic Surgeons, Tilley's work was instrumental in establishing the specialty and ensured its prosperity for years to come. Serving in the capacity of leader, educator and innovator, Tilley remains one of Canada's most decorated physicians, and his body of work encompasses contributions to the medical field that remain significant and beneficial to patient care to this day.

  12. Mida arvate ideest, et kõrgkoole võiks juhtida ülikoolivälistest inimestest koosnev nõukogu? / Jaak Aaviksoo, Maris Mälzer, Peeter Kreitzberg, Peep Sürje

    Index Scriptorium Estoniae

    2010-01-01

    Küsimusele vastavad Tartu Ülikooli eelmine rektor Jaak Aaviksoo, Eesti Üliõpilaskondade Liidu esimees Maris Mälzer, Riigikogu kultuurikomisjoni esimees Peeter Kreitzberg ja Tallinna Tehnikaülikooli rektor Peep Sürje

  13. A case of Ross syndrome presented with Horner and chronic cough

    Directory of Open Access Journals (Sweden)

    Aslihan Baran

    2014-01-01

    Full Text Available Ross syndrome is a rare sweating disorder associated with Adie′s tonic pupil, decreased or diminished tendon reflex and unknown etiology. Although autonomic disturbances affecting sudomotor and vasomotor functions are seen commonly, they are rarely symptomatic. While Ross syndrome is typically characterized with dilated tonic pupil, it may be rarely manifested with miotic pupils (little old Adie′s pupil, which can make diagnosis difficult. In this article, we aim to specify the atypical clinical manifestations of syndrome by means of Ross syndrome manifested by autonomic symptoms, Horner syndrome, chronic cough together with bilateral little old Adie′s pupil.

  14. Estimating flexural rigidity and load magnitude required for formation of Ross Island flexure moat

    Science.gov (United States)

    Jha, S.; Harry, D. L.; Wenman, C. P.

    2017-12-01

    Lithospheric flexural subsidence around Ross Island in West Antarctica led to formation of the Ross Island flexure moat. This subsidence was caused by two major volcanic phases on Ross Island. The first phase saw the first surficial expression of Ross Island and volcanism at Mt. Bird to the north of Ross Island, which lasted from 5.2 - 2.9 Ma. The second phase lasted from 1.78 Ma to present and is comprised of eruptions from Mt. Terror to the east, Mt. Erebus to the west and Hut Point Peninsula (HPP) to the south of Ross Island. Flexural subsidence of the lithosphere due to volcanism on Ross Island led to formation of a sedimentary moat around the island, which is preserved in stratigraphy imaged on seismic reflection profiles. We identified 5 unconformities (from deepest upward Ri, RMU1, RMU2, RMU3, RMU4) in the seismic surveys which correspond to flexural subsidence episodes around Ross Island since early Pliocene. Ri (4.4 Ma) lies near the bottom of the flexural moat and RMU4 near the seafloor and top of the moat fill. These unconformities were used to make isopach maps to constrain flexure modeling of the area. Isopach maps show circular or semi-circular flexure basins around Ross Island which is approximated using a continuous plate, point load flexure model. We used Ri - sea floor isopach to constrain flexure models for 5 profiles centered on 4 volcanic centers and trending radially out of Ross Island. Flexure models along two profiles beginning on Mt. Bird and one profile off HPP show a flexural rigidity range of 1.47 - 6.44 x 1018 Nm with load center of mass on Mt. Bird and on HPP, respectively. A similar model along a profile initiating on Mt. Terror, passing through Mt Erebus and extending west of Ross Island across the moat, yielded a higher flexural rigidity estimate of 2.03 x 1019 Nm with load centered at Mt. Erebus. A flexure model to the north east of Ross Island along a profile beginning at Mt Terror and trending north, provide the highest flexural

  15. Continuous GPS (static) Data from the Ross Ice Shelf, Antarctica, Version 1

    Data.gov (United States)

    National Aeronautics and Space Administration — In October 2005, three geodetic GPS receivers were deployed on the Ross Ice Shelf near the ice front to observe short-term fluctuations in ice-shelf velocity...

  16. Multichannel Seismic Reflection Data - SCAR - Ross Sea 1987-1988, SDLS CD-ROM vol 2

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — These data are stacked multichannel marine seismic reflection data from six lines recorded during 1988 in the Ross Sea, Antarctica, by the Bundesanstalt fur...

  17. Multichannel Seismic Reflection Data - SCAR - Ross Sea 1982, SDLS CD-ROM vol 12

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — These data are stacked multichannel marine seismic reflection data from seven lines recorded during 1982 in the Ross Sea, Antarctica, by the Institut Francais du...

  18. Multichannel Seismic Reflection Data - SCAR - Ross Sea 1980, SDLS, CD-ROM vol 5

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — These data are stacked multichannel marine seismic reflection data from eleven lines recorded during 1980 in the Ross Sea, Antarctica, by the Bundesanstalt fur...

  19. Giant Icebergs of the Ross Sea, in situ Drift and Weather Measurements, Antarctica, Version 1

    Data.gov (United States)

    National Aeronautics and Space Administration — During 2001-2006, 6 giant icebergs (B15A, B15J, B15K, C16 and C25) adrift in the southwestern Ross Sea, Antarctica, were instrumented with global positioning system...

  20. Multichannel Seismic Reflection Data - SCAR, Ross Sea - 1982-1983, CD-ROM vol 9

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — These data are stacked multichannel marine seismic reflection data from fourteen lines recorded during 1982 in the Ross Sea and Wilkes Island, Antarctica, by the...

  1. Multichannel Seismic Reflection Data - SCAR - Ross Sea - 1989, SDLS CD-ROM vol 14

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — These data are stacked multichannel marine seismic reflection data recorded during 1989 field season in the Ross Sea, Antarctica, by the SEVMORGEOLOGIA, RUSSIS. The...

  2. Multichannel Seismic Reflection Data - SCAR - Ross Sea - 1980, SDLS, CD-ROM vol 4

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — These data are stacked multichannel marine seismic reflection data from seven lines recorded during 1980 in the Ross Sea, Antarctica, by the Bundesanstalt fur...

  3. Multichannel Seismic Reflection Data - SCAR - Ross Sea - 1980, SDLS CD-ROM vol 3

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — These data are stacked multichannel marine seismic reflection data from four lines recorded during 1980 in the Ross Sea, Antarctica, by the Bundesanstalt fur...

  4. Long-term results of the Ross procedure in a population-based follow-up.

    Science.gov (United States)

    Kallio, Merja; Pihkala, Jaana; Sairanen, Heikki; Mattila, Ilkka

    2015-05-01

    The purpose of this study was to evaluate the long-term outcomes of the Ross procedure in a nationwide follow-up. This retrospective study involved all children treated with the Ross procedure in Finland between 1994 and 2009. The clinical records were reviewed for demographic and anatomical characteristics, Ross operation data, surgical history and status at the latest follow-up. The median follow-up time was 11.5 (range 2.4-19.2) years. Fifty-one patients underwent either the Ross (n = 37) or the Ross-Konno (n = 14) procedure at a median age of 4.8 (range 0.02-16.3) years, including 13 infants (Ross procedure was aortic valve stenosis, regurgitation or both, which was observed in 29, 24 and 47% of patients, respectively. The early mortality (before hospital discharge) rate was 10% (31% in infants) and the late mortality rate 6% (15% in infants). Higher mortality was discovered in patients treated with the Ross-Konno procedure (P = 0.001). The most common cause for reintervention was pulmonary homograft stenosis. The rate of freedom from right ventricular outflow tract reintervention was 98% at 5 years, 83% at 10 years and 59% at 15 years. The rate of freedom from autograft reintervention was 98% at 5 and 10 years, and 81% at 15 years. At the latest follow-up visit, mild-to-moderate aortic root dilatation was reported in 52% of patients, and 4 patients had undergone autograft-related reinterventions. Trivial autograft valve regurgitation was commonly seen, but only 1 patient developed severe autograft regurgitation requiring mechanical valve replacement 15.9 years after the Ross operation. The most common reason for reintervention after the Ross procedure in children is homograft stenosis. Aortic root dilatation and autograft valve regurgitation are relatively common but rarely lead to reinterventions before adulthood. Intraoperative complications and complex cardiac anatomy are associated with high mortality in infants undergoing the Ross-Konno procedure. In our

  5. Improved Survival After the Ross Procedure Compared With Mechanical Aortic Valve Replacement.

    Science.gov (United States)

    Buratto, Edward; Shi, William Y; Wynne, Rochelle; Poh, Chin L; Larobina, Marco; O'Keefe, Michael; Goldblatt, John; Tatoulis, James; Skillington, Peter D

    2018-03-27

    It is unclear whether the Ross procedure offers superior survival compared with mechanical aortic valve replacement (AVR). This study evaluated experience and compared long-term survival between the Ross procedure and mechanical AVR. Between 1992 and 2016, a total of 392 Ross procedures were performed. These were compared with 1,928 isolated mechanical AVRs performed during the same time period as identified using the University of Melbourne and Australia and New Zealand Society of Cardiac and Thoracic Surgeons' Cardiac Surgery Databases. Only patients between 18 and 65 years of age were included. Propensity-score matching was performed for risk adjustment. Ross procedure patients were younger, and had fewer cardiovascular risk factors. The Ross procedure was associated with longer cardiopulmonary bypass and aortic cross-clamp times. Thirty-day mortality was similar (Ross, 0.3%; mechanical, 0.8%; p = 0.5). Ross procedure patients experienced superior unadjusted long-term survival at 20 years (Ross, 95%; mechanical, 68%; p Ross procedure to be associated with a reduced risk of late mortality (hazard ratio: 0.34; 95% confidence internal: 0.17 to 0.67; p Ross procedure patients had superior survival at 20 years (Ross, 94%; mechanical, 84%; p = 0.018). In this Australian, propensity-score matched study, the Ross procedure was associated with better long-term survival compared with mechanical AVR. In younger patients, with a long life expectancy, the Ross procedure should be considered in centers with sufficient expertise. Crown Copyright © 2018. Published by Elsevier Inc. All rights reserved.

  6. Landscapes of the Self: The Cinema of Ross McElwee / Paisajes del yo. El cine de Ross McElwee

    OpenAIRE

    Cuevas, E. (Efrén); García-Martínez, A.N. (Alberto Nahum)

    2008-01-01

    Monografía sobre el documentalista Ross McElwee. Incluye 9 capítulos que estudian su obra, un texto suyo y una entrevista. El libro está en inglés y castellano. Este enlace incluye sólo el índice y la introducción A monography about the films of American documentary filmmaker Ross McElwee. It includes 9 chapters about his work, one text written by him, and an interview. The book is in English and Spanish. This link includes only the Table of Contents and the Introduction.

  7. Ross, macdonald, and a theory for the dynamics and control of mosquito-transmitted pathogens.

    Science.gov (United States)

    Smith, David L; Battle, Katherine E; Hay, Simon I; Barker, Christopher M; Scott, Thomas W; McKenzie, F Ellis

    2012-01-01

    Ronald Ross and George Macdonald are credited with developing a mathematical model of mosquito-borne pathogen transmission. A systematic historical review suggests that several mathematicians and scientists contributed to development of the Ross-Macdonald model over a period of 70 years. Ross developed two different mathematical models, Macdonald a third, and various "Ross-Macdonald" mathematical models exist. Ross-Macdonald models are best defined by a consensus set of assumptions. The mathematical model is just one part of a theory for the dynamics and control of mosquito-transmitted pathogens that also includes epidemiological and entomological concepts and metrics for measuring transmission. All the basic elements of the theory had fallen into place by the end of the Global Malaria Eradication Programme (GMEP, 1955-1969) with the concept of vectorial capacity, methods for measuring key components of transmission by mosquitoes, and a quantitative theory of vector control. The Ross-Macdonald theory has since played a central role in development of research on mosquito-borne pathogen transmission and the development of strategies for mosquito-borne disease prevention.

  8. Quantifying fall migration of Ross's gulls (Rhodostethia rosea) past Point Barrow, Alaska

    Science.gov (United States)

    Uher-Koch, Brian D.; Davis, Shanti E.; Maftei, Mark; Gesmundo, Callie; Suydam, R.S.; Mallory, Mark L.

    2014-01-01

    The Ross's gull (Rhodostethia rosea) is a poorly known seabird of the circumpolar Arctic. The only place in the world where Ross's gulls are known to congregate is in the near-shore waters around Point Barrow, Alaska where they undertake an annual passage in late fall. Ross's gulls seen at Point Barrow are presumed to originate from nesting colonies in Siberia, but neither their origin nor their destination has been confirmed. Current estimates of the global population of Ross's gulls are based largely on expert opinion, and the only reliable population estimate is derived from extrapolations from previous counts conducted at Point Barrow, but these data are now over 25 years old. In order to update and clarify the status of this species in Alaska, our study quantified the timing, number, and flight direction of Ross's gulls passing Point Barrow in 2011. We recorded up to two-thirds of the estimated global population of Ross's gulls (≥ 27,000 individuals) over 39 days with numbers peaking on 16 October when we observed over 7,000 birds during a three-hour period.

  9. Ghost Stories: Review of Ross Gibson's The Summer Exercises

    Directory of Open Access Journals (Sweden)

    Deane Williams

    2010-03-01

    Full Text Available Back 
in 
1986, 
Ross 
Gibson
 was 
interviewed 
in
 Filmnews 
by
 Adrian
 Martin 
and
Tina
 Kaufman
 about
 his
 experimental
 short
 essay
 film
 Camera
 Natura
 (1984. Accompanying
 that
 interview
 was
 a
 photo
 of
 Gibson
 ‘on
 location’
 for
 his
 film,
 wearing
 a
 hat
 not
 unlike
 the
 one
 that
 features
 on
 the
 cover
 of
 his
 new
 book
 The
 Summer 
Exercises.
 Back 
then
 I
 understood
 the 
hat
 to 
be
 an
explorer’s,
 someone 
like
 Charles
 Sturt,
 someone
 whose
 willingness
 to
 learn
 from
 his
 environment
 had
 impressed
 Gibson
 in
 fashioning
 his
 own
 history
 of
 Australian
 landscape
 imaging.
 Now
 the
 hat
 looks
 like
 a
 detective’s
 or,
 rather,
 Marcel
 Duchamp’s
 rendering
 of
 a
 detective’s
 hat: 
on 
display,
 ready 
for
 our
 re‐consideration.

  10. Growth characteristics of the Ross 708 broiler chicken.

    Science.gov (United States)

    Rosebrough, R W; Mitchell, A D

    2007-01-01

    A growth trial was conducted with the Ross 708 broiler chicken to corroborate the relationships between changes in the growth curve (7 to 35 days) and in vitro metabolic parameters. These in vitro parameters also included estimates of the expression of certain genes regulating proteins implicated with regulation of lipogenesis. Birds were fed diets containing 24% protein from 0 to 14 days of age, 21% from 14 to 26 days of age and 18% protein until 35 days of age. Birds were selected and killed at ages corresponding to protein changes. Dual X-ray absorptiometry (DXA) was used to approximate body composition of birds at day 35. The switch from the starter protein level of 24% crude protein to the only slightly lower protein grower diet (21% crude protein) increased both in vitro lipogenesis and malic enzyme activity. A similar observation was noted when the birds were switched to the 18% crude protein finisher diet. These same switches also elicited initial increases in malic enzyme, fatty acids synthase and acetyl CoA carboxylase gene expression that were not sustained following adaptation to the dietary change. Data also show that DXA can be used to estimate body composition of this type of bird.

  11. Influence of Meteorological Regimes on Cloud Microphysics Over Ross Island, Antarctica

    Science.gov (United States)

    Glennon, C.; Wang, S. H.; Scott, R. C.; Bromwich, D. H.; Lubin, D.

    2017-12-01

    The Antarctic provides a sharp contrast in cloud microphysics from the high Arctic, due to orographic lifting and resulting strong vertical motions induced by mountain ranges and other varying terrain on several spatial scales. The Atmospheric Radiation Measurement (ARM) West Antarctic Radiation Experiment (AWARE) deployed advanced cloud remote sensing equipment to Ross Island, Antarctica, from December 2015 until January 2016. This equipment included scanning and zenith radars operating in the Ka and X bands, a high spectral resolution lidar (HSRL), and a polarized micropulse lidar (MPL). A major AWARE objective is to provide state-of-the-art data for improving cloud microphysical parameterizations in climate models. To further this objective we have organized and classified the local Ross Island meteorology into distinct regimes using k-means clustering on ERA-Interim reanalysis data. We identify synoptic categories producing unique regimes of cloud cover and cloud microphysical properties over Ross Island. Each day of observations can then be associated with a specific meteorological regime, thus assisting modelers with identifying case studies. High-resolution (1 km) weather forecasts from the Antarctic Mesoscale Prediction System (AMPS) are sorted into these categories. AMPS-simulated anomalies of cloud fraction, near-surface air temperature, and vertical velocity at 500-mb are composited and compared with ground-based radar and lidar-derived cloud properties to identify mesoscale meteorological processes driving Antarctic cloud formation. Synoptic lows over the Ross and Amundsen Seas drive anomalously warm conditions at Ross Island by injecting marine air masses inland over the West Antarctic Ice Sheet (WAIS). This results in ice and mixed-phase orographic cloud systems arriving at Ross Island from the south to southeast along the Transantarctic Mountains. In contrast, blocking over the Amundsen Sea region brings classical liquid-dominated mixed-phase and

  12. Correlating flexural moat subsidence with grounding line fluctuations around Ross Island, Antarctica

    Science.gov (United States)

    Jha, S.; Harry, D. L.; Wenman, C. P.

    2014-12-01

    The southern Ross Sea basin in West Antarctica has been filled up with a complex sedimentary sequence since ~5 Ma containing a mixture of glacial and glacio-marine strata and flexural basin infill. These strata record past climatically influenced advances and retreats of the West Antarctic Ice Sheet and the volcanic loading history of Ross Island. We hypothesize that the amplitude of flexural uplift of the seafloor caused by volcanic loading on Ross Island was sufficient to cause fluctuations of the ice grounding line position, creating false positives in the climate change interpretations derived from the nearby ANDRILL AND-1B core data. To test this hypothesis, we model flexural deformation and subsidence due to individual volcanic loading episodes on Ross Island. We constrain this model by three seismic horizons (Rsb1, Rsb2, and Rsb3) imaged on seismic profile NBP0401-126m, which trends radially away from Ross Island and across its flexural moat. The horizons bound wedge shaped strata filling the moat during flexural depositional episodes, and range in depth (age) from 146 m-153 m (~2.1 Ma), 282 m-308 m (~3.0 Ma) and 432 m- 463 m (4.3 ± 0.3 Ma) respectively. Our flexure model suggests that AND-1B lies in the flexural moat of the Ross Island flexure basin. Horizons Rsb2 and Rsb3 record the flexural subsidence of the basin during Mt. Bird volcanic loading on Ross Island. Rsb2 and RSb3 correlate with upward changes from diamictites to diatomites and mudstones in the AND-1B stratigraphic record. This lithological change has been interpreted to represent a change from grounded ice to open marine conditions, and a shift in the ice sheet grounding line position. Therefore, our results suggest that the magnitude of flexural subsidence in the flexural moat was sufficient to cause changes from grounded to floating ice at the AND-1B.

  13. Clinical Outcomes Following the Ross Procedure in Adults: A 25-Year Longitudinal Study.

    Science.gov (United States)

    Martin, Elisabeth; Mohammadi, Siamak; Jacques, Frederic; Kalavrouziotis, Dimitri; Voisine, Pierre; Doyle, Daniel; Perron, Jean

    2017-10-10

    Very few reports of long-term outcomes of patients who underwent the Ross procedure have been published. The authors reviewed their 25-year experience with the Ross procedure with the aim of defining very-long-term survival and factors associated with Ross-related failure. Between January 1990 and December 2014, the Ross procedure was performed in 310 adults (mean age 40.8 years) at a single institution. All patients were prospectively added to a dedicated cardiac surgery registry. Complete post-operative clinical examination and history were obtained, and transthoracic echocardiography was performed according to a standardized protocol. There was no loss to follow-up. Median follow-up was 15.1 years and up to 25 years. Bicuspid aortic valve was diagnosed in 227 patients (73.2%), and the most common indication for surgery was aortic stenosis (n = 225 [72.6%]). Freedom from any Ross-related reintervention was 92.9% and 70.1% at 10 and 20 years, respectively. Independent risk factors for pulmonary autograft degeneration were pre-operative large aortic annulus (hazard ratio: 1.1; p = 0.01), pre-operative aortic insufficiency (hazard ratio: 2.7; p = 0.002), and concomitant replacement of the ascending aorta (hazard ratio: 7.7; p = 0.0003). There were 4 hospital deaths (1.3%), and overall survival at 10 and 20 years was 94.1% and 83.6%, respectively. Long-term survival was not significantly different in patients who required Ross-related reintervention (log-rank p = 0.70). However, compared with the general population, survival was significantly lower in patients following the Ross procedure when matched on age and sex (p Ross procedure was associated with excellent long-term valvular outcomes and survival, regardless of the need for reintervention. Adults presenting with aortic insufficiency or a dilated aortic annulus or ascending aorta were at greater risk for reintervention. Unlike previous reports, long-term survival was lower in Ross

  14. Efficient transduction of neurons using Ross River glycoprotein-pseudotyped lentiviral vectors

    DEFF Research Database (Denmark)

    Jakobsson, J; Nielsen, T Tolstrup; Staflin, K

    2006-01-01

    Lentiviral vectors are promising tools for CNS gene transfer since they efficiently transduce the cells of the nervous system in vivo. In this study, we have investigated the transduction efficiency of lentiviral vectors pseudotyped with Ross River virus glycoprotein (RRV-G) (RRV-G-pseudotyped le......Lentiviral vectors are promising tools for CNS gene transfer since they efficiently transduce the cells of the nervous system in vivo. In this study, we have investigated the transduction efficiency of lentiviral vectors pseudotyped with Ross River virus glycoprotein (RRV-G) (RRV...... and human glial fibrillary acidic protein, we demonstrated cell-specific transgene expression in the desired cell type. Ross River virus glycoprotein-pseudotyped lentiviral vectors also transduced human neural progenitor cells in vitro, showing that receptors for the RRV-G are present on human neural cells....

  15. Paleobathymetric Reconstruction of Ross Sea: seismic data processing and regional reflectors mapping

    Science.gov (United States)

    Olivo, Elisabetta; De Santis, Laura; Wardell, Nigel; Geletti, Riccardo; Busetti, Martina; Sauli, Chiara; Bergamasco, Andrea; Colleoni, Florence; Vanzella, Walter; Sorlien, Christopher; Wilson, Doug; De Conto, Robert; Powell, Ross; Bart, Phil; Luyendyk, Bruce

    2017-04-01

    PURPOSE: New maps of some major unconformities of the Ross Sea have been reconstructed, by using seismic data grids, combined with the acoustic velocities from previous works, from new and reprocessed seismic profiles. This work is carried out with the support of PNRA and in the frame of the bilateral Italy-USA project GLAISS (Global Sea Level Rise & Antarctic Ice Sheet Stability predictions), funded by the Ministry of Foreign Affairs. Paleobathymetric maps of 30, 14 and 4 million years ago, three 'key moments' for the glacial history of the Antarctic Ice Sheet, coinciding with global climatic changes. The paleobathymetric maps will then be used for numeric simulations focused on the width and thickness of the Ross Sea Ice Sheet. PRELIMINARY RESULTS: The first step was to create TWT maps of three main unconformity (RSU6, RSU4, and RSU2) of Ross Sea, revisiting and updating the ANTOSTRAT maps, through the interpretation of sedimentary bodies and erosional features, used to infer active or old processes along the slope, we identified the main seismic unconformities. We used the HIS Kingdom academic license. The different groups contribution was on the analysis of the Eastern Ross Sea continental slope and rise (OGS), of the Central Basin (KOPRI) of the western and central Ross Sea (Univ. of Santa Barbara and OGS), where new drill sites and seismic profiles were collected after the publication of the ANTOSTRAT maps. Than we joined our interpretation with previous interpretations. We examined previous processing of several seismic lines and all the old acoustic velocity analysis. In addiction we reprocessed some lines in order to have a higher data coverage. Then, combining the TWT maps of the unconformity with the old and new speed data we created new depth maps of the study area. The new depth maps will then be used for reconstructing the paleobathymetry of the Ross Sea by applying backstripping technique.

  16. Hemodynamic outcomes of the Ross procedure versus other aortic valve replacement: a systematic review and meta-analysis.

    Science.gov (United States)

    Um, Kevin J; McCLURE, Graham R; Belley-Cote, Emilie P; Gupta, Saurabh; Bouhout, Ismail; Lortie, Hugo; Alraddadi, Hatim; Alsagheir, Ali; Bossard, Matthias; McINTYRE, William F; Lengyel, Alexandra; Eikelboom, John W; Ouzounian, Maral; Chu, Michael W; Parry, Dominic; El-Hamamsy, Ismail; Whitlock, Richard P

    2018-01-09

    Life expectancy in young adults undergoing mechanical or bioprosthetic aortic valve replacement (AVR) may be reduced by up to 20 years compared to age matched controls. The Ross procedure is a durable, anticoagulation-sparing alternative. We performed a systematic review and meta-analysis to compare the valve hemodynamics of the Ross procedure versus other AVR. We searched Cochrane CENTRAL, MEDLINE and EMBASE from inception to February 2017 for randomized controlled trials (RCTs) and observational studies (n≥10 Ross). Independently and in duplicate, we performed title and abstract screening, full-text eligibility assessment, and data collection. We evaluated the risk of bias with the Cochrane and CLARITY tools, and the quality of evidence with the GRADE framework. We identified 2 RCTs and 13 observational studies that met eligibility criteria (n=1,412). In observational studies, the Ross procedure was associated with a lower mean aortic gradient at discharge (MD -9 mmHg, 95% CI [-13, -5], pRoss procedure was associated with a lower mean gradient at latest follow-up (MD -15 mmHg, 95% CI [-32, 2], p=0.08, I2=99%). The mean pulmonic gradient for the Ross procedure was 18.0 mmHg (95% CI [16, 20], pRoss procedure was associated with better aortic valve hemodynamics. Future studies should evaluate the impact of the Ross procedure on exercise capacity and quality of life.

  17. Polynyas and Ice Production Evolution in the Ross Sea (PIPERS)

    Science.gov (United States)

    Ackley, S. F.

    2017-12-01

    One focus of the PIPERS cruise into the Ross Sea ice cover during April-June 2017 was the Terra Nova Bay (TNB) polynya where joint measurements of air-ice-ocean wave interaction were conducted over twelve days. In Terra Nova Bay, measurements were made in three katabatic wind events each with sustained winds over 35 ms-1 and air temperatures below -15C. Near shore, intense wave fields with wave amplitudes of over 2m and 7-9 sec periods built and large amounts of frazil ice crystals grew. The frazil ice gathered initially into short and narrow plumes that eventually were added laterally to create longer and wider streaks or bands. Breaking waves within these wider streaks were dampened which appeared to enhance the development of pancake ice. Eventually, the open water areas between the streaks sealed off, developing a complete ice cover of 100 percent concentration (80-90 percent pancakes, 20-10 percent frazil) over a wide front (30km). The pancakes continued to grow in diameter and thickness as waves alternately contracted and expanded the ice cover, with the thicker larger floes further diminishing the wave field and lateral motion between pancakes until the initial pancake ice growth ceased. The equilibrium thickness of the ice was 20-30cm in the pancake ice. While the waves had died off however, katabatic wind velocities were sustained and resulted in a wide area of concentrated, rafted, pancake ice that was rapidly advected downstream until the end of the katabatic event. High resolution TerraSar-X radar satellite imagery showed the length of the ice area produced in one single event extended over 300km or ten times the length of the open water area during one polynya event. The TNB polynya is therefore an "ice factory" where frazil ice is manufactured into pancake ice floes that are then pushed out of the assembly area and advected, rafted (and occasionally piled up into "dragon skin" ice), until the katabatic wind dies off at the coastal source.

  18. Aortic Valve Replacement and the Ross Operation in Children and Young Adults.

    Science.gov (United States)

    Sharabiani, Mansour T A; Dorobantu, Dan M; Mahani, Alireza S; Turner, Mark; Peter Tometzki, Andrew J; Angelini, Gianni D; Parry, Andrew J; Caputo, Massimo; Stoica, Serban C

    2016-06-21

    There are several options available for aortic valve replacement (AVR), with few comparative reports in the literature. The optimal choice for AVR in each age group is not clear. The study sought to report and compare outcomes after AVR in the young using data from a national database. AVR procedures were compared after advanced matching, both in pairs and in a 3-way manner, using a Bayesian dynamic survival model. A total of 1,501 patients who underwent AVR in the United Kingdom between 2000 and 2012 were included. Of these, 47.8% had a Ross procedure, 37.8% a mechanical AVR, 10.9% a bioprosthesis AVR, and 3.5% a homograft AVR, with Ross patients being significantly younger when compared to the other groups. Overall survival at 12 years was 94.6%. In children, the Ross procedure had a 12.7% higher event-free probability (death or any reintervention) at 10 years when compared to mechanical AVR (p = 0.05). We also compared all procedures except the homograft in a matched population of young adults, where the bioprosthesis had the lowest event-free probability of 78.8%, followed by comparable results in mechanical AVR and Ross, with 86.3% and 89.6%, respectively. Younger age was associated with mortality and pulmonary reintervention in the Ross group and with aortic reintervention in the mechanical AVR. Of all 3 options, only the patients undergoing the Ross procedure approached the survival of the general population. AVR in the young achieves good results, with the Ross being overall better suited for this age group, especially in children. Although freedom from aortic valve reintervention is superior after the Ross procedure, the need for homograft reinterventions is an issue to take into account. All methods have advantages and limitations, with reinterventions being an issue in the long term for all, more crucially in smaller children. Copyright © 2016 American College of Cardiology Foundation. Published by Elsevier Inc. All rights reserved.

  19. Long-Term Outcomes of the Ross Procedure Versus Mechanical Aortic Valve Replacement: Propensity-Matched Cohort Study.

    Science.gov (United States)

    Mazine, Amine; David, Tirone E; Rao, Vivek; Hickey, Edward J; Christie, Shakira; Manlhiot, Cedric; Ouzounian, Maral

    2016-08-23

    The ideal aortic valve substitute in young and middle-aged adults remains unknown. We sought to compare the long-term outcomes of patients undergoing the Ross procedure and those receiving a mechanical aortic valve replacement (AVR). From 1990 to 2014, 258 patients underwent a Ross procedure and 1444 had a mechanical AVR at a single institution. Patients were matched into 208 pairs through the use of a propensity score. Mean age was 37.2±10.2 years, and 63% were male. Mean follow-up was 14.2±6.5 years. Overall survival was equivalent (Ross versus AVR: hazard ratio, 0.91, 95% confidence interval, 0.38-2.16; P=0.83), although freedom from cardiac- and valve-related mortality was improved in the Ross group (Ross versus AVR: hazard ratio, 0.22; 95% confidence interval, 0.034-0.86; P=0.03). Freedom from reintervention was equivalent after both procedures (Ross versus AVR: hazard ratio, 1.86; 95% confidence interval, 0.76-4.94; P=0.18). Long-term freedom from stroke or major bleeding was superior after the Ross procedure (Ross versus AVR: hazard ratio, 0.09; 95% confidence interval, 0.02-0.31; PRoss procedure and mechanical AVR. However, the Ross procedure was associated with improved freedom from cardiac- and valve-related mortality and a significant reduction in the incidence of stroke and major bleeding. In specialized centers, the Ross procedure represents an excellent option and should be considered for young and middle-aged adults undergoing AVR. © 2016 American Heart Association, Inc.

  20. Two Case Histories, Ishbel Ross and Emma Bugbee: Women Journalists Ride the Rail with the Suffragettes.

    Science.gov (United States)

    Merrick, Beverly G.

    The rise to prominence of the women's suffrage movement in the World War I years brought women reporters into U.S. newsrooms for the first time. In 1911 Emma Bugbee became the first woman hired as a "hard" news reporter for the "New York Tribune" (later the "Herald Tribune"). Ishbel Ross, author of "Ladies of the…

  1. TEST OF THE CHEN-ROLL-ROSS MACROECONOMIC FACTOR MODEL: EVIDENCE FROM CROATIAN STOCK MARKET

    Directory of Open Access Journals (Sweden)

    Denis Dolinar

    2015-12-01

    Full Text Available This paper empirically examines the well-known Chen-Roll-Ross model on the Croatian stock market. Modifications of definitions of the Chen-Roll-Ross model variables showed as necessary because of doubtful availability and quality of input data needed. Namely, some macroeconomic and market variables are not available in the originally defined form or do not exist. In that sense this paper gives some alternative definitions for some model variables. Also, in order to improve statistical analysis, in this paper we have modified Fama-MacBeth technique in the way that second-pass regression was substituted with panel regression analysis. Based on the two-pass regression analysis of returns of 34 Croatian stocks on 4 macroeconomic variables during the seven-and-half-year observation period the following conclusion is made. In contrast to the results of Chen, Roll and Ross (1986 for the U.S. stock market, their model is not successful when describing a risk-return relation of Croatian stocks. Nevertheless, one observed version of the Chen-RollRoss model showed certain statistical significance. Namely, two risk factors in that version of the model were statistically significant: default premium, measured as risk premium for the corporate short-term bank loan financing, and term structure premium, measured on short-run basis.

  2. Assessing competition with the Panzar-Rosse model : the role of scale, costs, and equilibrium

    NARCIS (Netherlands)

    Bikker, Jacob A.; Shaffer, Sherrill; Spierdijk, Laura

    2012-01-01

    The Panzar-Rosse test has been widely applied to assess competitive conduct, often in specifications controlling for firm scale or using a price equation. We show that neither a price equation nor a scaled revenue function yields a valid measure for competitive conduct. Moreover, even an unscaled

  3. First stage of INTRAMAP: INtegrated Transantarctic Mountains and Ross Sea Area Magnetic Anomaly Project

    Directory of Open Access Journals (Sweden)

    D. Damaske

    1999-06-01

    Full Text Available INTRAMAP (INtegrated Transantarctic Mountains and Ross Sea Area Magnetic Anomaly Project is an international effort to merge the magnetic data acquired throughout the "Ross Sea Antarctic Sector" (south of 60°S between 135°-255°E including the Transantarctic Mountains (TAM, the Ross Sea, Marie Byrd Land, and the Pacific coast, and also to begin the compilation efforts for new data over the Wilkes Basin. This project is a component of the continental scale Antarctic Digital Magnetic Anomaly Project (ADMAP. The first stage of INTRAMAP addresses the analysis and merging of GITARA (1991-1994 and GANOVEX (1984 aeromagnetic surveys together with ground magnetic data (1984-1989. The combined data sets cover an area of approximately 30 km2 over Victoria Land and adjacent Ross Sea. Map and profile gridding were implemented to integrate the data sets. These approaches are studied for improving existing strategies to adopt for the whole magnetic compilation effort. The final microlevelled grid that we produce is a new tool for regional interpretation of the main tectonic and geologic features of this sector of Antarctica.

  4. Why can rossing uranium mine keep mining even in low price conditions of uranium market

    International Nuclear Information System (INIS)

    Tan Chenglong

    2004-01-01

    Rossing uranium mine is the only operating uranium mine in the world where the uranium occurs in intrusive alaskite. In the past 10 years, uranium market regressed in the world, uranium production weakened, expenditures of capital for uranium exploration were insufficient. Uranium spot market price rapidly decreased from $111.8/kg U in late 1970's to $22.1/kg U in mid-1990's. Why can Rossing uranium mine mined with traditional underground and open pit operation can keep running even in low price conditions of uranium market? Augumenting research on the deposit, mineral and technology, decreasing production cost and improving selling strategy can not only maintain Rossing's uranium production at present, but also ensure sustainable development in the coming 15 years. Exploration of low-costed uranium deposits is very important. However, obvious economic benefits can be obtained, as Rossing uranium mine does, by augumenting geological-economical research on the known uranium deposits of hard-rock type and by using new techniques to improve the conventional techniques in the uranium mine development. (authors)

  5. Distribution and ventilation of water masses in the western Ross Sea inferred from CFC measurements

    Science.gov (United States)

    Rivaro, Paola; Ianni, Carmela; Magi, Emanuele; Massolo, Serena; Budillon, Giorgio; Smethie, William M.

    2015-03-01

    During the CLIMA Project (R.V. Italica cruise PNRA XVI, January-February 2001), hydrographic and chlorofluorocarbons (CFCs) observations were obtained, particularly in the western Ross Sea. Their distribution demonstrated water mass structure and ventilation processes in the investigated areas. In the surface waters (AASW) the CFC saturation levels varied spatially: CFCs were undersaturated in all the areas (range from 80 to 90%), with the exception of few stations sampled near Ross Island. In particular, the Terra Nova Bay polynya, where high salinity shelf water (HSSW) is produced, was a low-saturated surface area (74%) with respect to CFCs. Throughout most of the shelf area, the presence of modified circumpolar deep water (MCDW) was reflected in a mid-depth CFC concentration minima. Beneath the MCDW, CFC concentrations generally increased in the shelf waters towards the seafloor. We estimated that the corresponding CFCs saturation level in the source water region for HSSW was about 68-70%. Waters with high CFC concentrations were detected in the western Ross Sea on the down slope side of the Drygalski Trough, indicating that AABW was being supplied to the deep Antarctic Basin. Estimates of ventilation ages depend strongly on the saturation levels. We calculated ventilation ages using the saturation level calibrated tracer ratio, CFC11/CFC12. We deduced a mean residence time of the shelf waters of about 6-7 years between the western Ross Sea source and the shelf break.

  6. Sources of iron in the Ross Sea Polynya in early summer

    NARCIS (Netherlands)

    Gerringa, L.J.A.; Laan, P.; van Dijken, G.L.; van Haren, H.; de Baar, H.J.W.; Arrigo, K.R.; Alderkamp, A.-C.

    2015-01-01

    Dissolved Fe (DFe) was measured in the Ross Sea Polynya (RSP), Antarctica, during a GEOTRACES cruise between 20 December 2013 and 5 January 2014. DFe was measured over the full water column with special emphasis on samples near the seafloor. In the upper mixed layer, DFe was very low everywhere (<

  7. Assessing Competition with the Panzar-Rosse Model: The Role of Scale, Costs, and Equilibrium

    NARCIS (Netherlands)

    Bikker, J.A.|info:eu-repo/dai/nl/06912261X; Shaffer, S.; Spierdijk, L.

    2009-01-01

    The Panzar-Rosse test has been widely applied to assess competitive conduct, often in specifcations controlling for firm scale or using a price equation. We show that neither a price equation nor a scaled revenue function yields a valid measure for competitive conduct. Moreover, even an unscaled

  8. Correspondencia de Luis Ross Mágica con Miguel de Unamuno

    OpenAIRE

    Dias, José Manuel de Barros

    1994-01-01

    Decorria o ano de 1905 guando o entáo reitor da Universidad de Salamanca, Miguel de Unamuno y Jugo, recebeu a primeira das cartas de Luis Ross Mugica', um jovem chileno nascido aproximadamente em 1883 que, em breve, iria despertar a sua atenláo e cuja memória perduraria no autor basco até á velhice.

  9. Märten Ross sõnastas majanduskriisi õppetunnid / Argo Ideon

    Index Scriptorium Estoniae

    Ideon, Argo, 1966-

    2011-01-01

    Ajutiselt peaministri majandus- ja rahandusnõunikuna töötanud endine Eesti Panga asepresident Märten Ross kirjutas loetelu õppetundidest, mida Eesti majanduspoliitika peaks arvestama 2008.-2009. aasta kriisi põhjal. Rossi 10 punkti lühidalt. Rahandusminister Jürgen Ligi ning Eesti Panga rahapoliitika ja majandusuuringute osakonna asejuhataja Martin Lindpere arvamus

  10. Unusual biogenic calcite structures in two shallow lakes, James Ross Island, Antarctica

    Czech Academy of Sciences Publication Activity Database

    Elster, Josef; Nedbalová, Linda; Vodrážka, R.; Láska, K.; Haloda, J.; Komárek, Jiří

    2016-01-01

    Roč. 13, č. 2 (2016), s. 535-549 ISSN 1726-4170 R&D Projects: GA MŠk ME 945 Institutional support: RVO:67985939 Keywords : James Ross Island * cyanobacteria * microalgae Subject RIV: EH - Ecology, Behaviour Impact factor: 3.851, year: 2016

  11. A Helping Hand in the Frederick Community—Ross Smith | Poster

    Science.gov (United States)

    By day, Ross Smith is the compliance and security officer for Data Management Services, Inc., assigned to the National Cancer Institute (NCI) at Frederick. His role is to ensure the secure operation of in-house computer systems, servers, and network connections. But in his spare time, Smith is also a volunteer firefighter and emergency medical technician (EMT).

  12. Ross In Situ Uranium Recovery Project NESHAP Subpart W Construction Approval

    Science.gov (United States)

    On May 5, 2015, EPA issued a Construction Approval under the National Emission Standards for Hazardous Air Pollutants (NESHAPs) at 40 CFR Part 61, subpart W, to Strata Energy, Inc., for their Ross In Situ Recovery (ISR) Uranium Project in Crook County, WY.

  13. The place of theology in the modern university | Ross | Journal of ...

    African Journals Online (AJOL)

    The place of theology in the modern university. Kenneth R. Ross. Abstract. No Abstract. Full Text: EMAIL FREE FULL TEXT EMAIL FREE FULL TEXT · DOWNLOAD FULL TEXT DOWNLOAD FULL TEXT · AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about ...

  14. Sources of iron in the Ross Sea Polynya in early summer

    NARCIS (Netherlands)

    Gerringa, L. J. A.; Laan, P.; van Dijken, G. L.; van Haren, H.; De Baar, H. J. W.; Arrigo, K. R.; Alderkamp, A. -C.

    2015-01-01

    Dissolved Fe (DFe) was measured in the Ross Sea Polynya (RSP), Antarctica, during a GEOTRACES cruise between 20 December 2013 and 5 January 2014. DFe was measured over the full water column with special emphasis on samples near the seafloor. In the upper mixed layer, DFe was very low everywhere (

  15. Astronauts Ross and Helms at CAPCOM station during STS-61 simulations

    Science.gov (United States)

    1993-01-01

    Astronauts Jerry L. Ross and Susan J. Helms are pictured at the Spacecraft Communicators console during joint integrated simulations for the STS-61 mission. Astronauts assigned to extravehicular activity (EVA) tasks with the Hubble Space Telescope (HST) were simultaneously rehearsing in a neutral buoyancy tank at the Marshall Space Flight Center (MSFC) in Alabama.

  16. Transcatheter versus surgical valve replacement for a failed pulmonary homograft in the Ross population.

    Science.gov (United States)

    Alassas, Khadija; Mohty, Dania; Clavel, Marie Annick; Husain, Aysha; Hijji, Talal; Aljoufan, Mansour; Alhalees, Zohair; Fadel, Bahaa M

    2018-04-01

    Patients who undergo the Ross procedure are at increased risk of pulmonary valve (PV) homograft dysfunction. For those who require reintervention on the homograft, transcatheter PV replacement (tPVR) provides a less invasive therapeutic option than surgical PVR (sPVR). We examined the outcomes following tPVR versus sPVR in a cohort of patients who underwent the Ross procedure. We performed a retrospective analysis of Ross patients age ≥14 years who underwent tPVR (n = 47) or sPVR (n = 41) at our institution. The patients' clinical and echocardiographic data were reviewed. Baseline parameters, including demographic data and left ventricular and right ventricular (RV) systolic function, were similar in the 2 groups. The mean follow-up was 56 ± 24 months for the tPVR group and 89 ± 46 months for the sPVR group (P Ross patients who require reintervention on the PV homograft, both tPVR and sPVR provide low procedural mortality and comparable midterm outcome with no significant difference in mortality or PV reintervention. However, IE is more common following tPVR. A larger randomized study is needed to determine the role of each procedure in patient management. Copyright © 2017 The American Association for Thoracic Surgery. Published by Elsevier Inc. All rights reserved.

  17. Distribution, density, and abundance of pack-ice seals in the Amundsen and Ross Seas, Antarctica

    Science.gov (United States)

    Bengtson, John L.; Laake, Jeff L.; Boveng, Peter L.; Cameron, Michael F.; Bradley Hanson, M.; Stewart, Brent S.

    2011-05-01

    We made three sets of population surveys of the four species of ice-inhabiting phocid pinnipeds in the Ross and Amundsen Seas between 26 December 1999 and 24 March 2000 using icebreakers and helicopters deployed from those icebreakers. We used line transect methods to survey 23,671 km by helicopter and 3,694 km by ship accounting for a total coverage of 53,217 km 2. We detected and identified 11,308 seals in 7,104 groups and estimated their abundance from estimates of densities using distance sampling methods and corrections for probability of haul out of seals derived from satellite telemetry of tagged seals. Crabeater seals were most abundant (ca 1.7 million) followed by Weddell seals (330,000), Ross seals (22,600), and leopard seals (15,000). Our estimates of abundance are difficult to directly compare with earlier estimates because of geographic areas covered and by our improvements in survey and analytical methods. Notwithstanding these limitations and with some adjustments for differences in methods, we found that our estimates of abundance for crabeater seals are similar to those from the most recent surveys in the Ross and Amundsen Seas and along the George-Oates Coast. Our estimates for Weddell seals are the first for the broad areas of pack ice that we surveyed in the Ross and Amundsen Seas but indicate that these habitats are ecologically important to this species. Our estimates of abundance of Ross seals were relatively similar to estimates for surveys in these areas in the 1970s and 1980s whereas our estimates of abundance of leopard seals were substantially lower.

  18. Long-term Evaluation of the Ross Procedure in Acute Infective Endocarditis.

    Science.gov (United States)

    Ratschiller, Thomas; Sames-Dolzer, Eva; Paulus, Patrick; Schimetta, Wolfgang; Müller, Hannes; Zierer, Andreas F; Mair, Rudolf

    2017-10-05

    Optimal valve substitute for young patients with aortic valve endocarditis remains controversial. Given its better resistance to infection, the Ross procedure is an attractive alternative to prosthetic valve replacement or homograft implantation. The objective of this study was to assess long-term outcomes of the Ross procedure in this indication. From January 1991 to April 2017, 190 patients underwent a Ross procedure at our institution. Acute endocarditis was the indication for operation in 19 patients, including 6 patients with a bicuspid aortic valve. The pulmonary autograft was implanted as freestanding root replacement in all patients. The clinical follow-up is 100% complete, with a mean of 12.0 ± 5.7 years. The mean age of the study population was 35.9 ± 11.5 years. Moderate or severe aortic regurgitation was present in 84.2% of the patients. Systemic embolization had occurred in 36.8% of the patients. The mean aortic cross-clamp time was 126 ± 24 minutes. The median length of stay on the intensive care unit was 1 day. Mortality at 30 days was 5.3% (1 patient with gastrointestinal bleeding). Echocardiography at hospital discharge documented no or trivial aortic regurgitation in all patients. No case of recurrent endocarditis affecting the autograft occurred. One patient (0.4% per patient-year) was reoperated 1.8 years after the Ross procedure for homograft endocarditis. Three patients (15.8%) were reoperated for autograft aneurysm. The Ross procedure is a safe and effective alternative to prosthetic valve replacement or homograft implantation in selected young patients with acute endocarditis with a low rate of recurrent infection. Copyright © 2017 Elsevier Inc. All rights reserved.

  19. Valve-sparing root replacement for freestanding pulmonary autograft aneurysm after the Ross procedure.

    Science.gov (United States)

    Ratschiller, Thomas; Eva, Sames-Dolzer; Schimetta, Wolfgang; Paulus, Patrick; Müller, Hannes; Zierer, Andreas; Mair, Rudolf

    2018-02-20

    Autograft dilatation is the main long-term complication following the Ross procedure using the freestanding root replacement technique. We reviewed our 25-year experience with the Ross procedure with a special emphasis on valve-sparing reoperations. From 1991 to 2016, 153 patients (29.6 ± 16.6 years; 29.4% pediatric) underwent a Ross operation at our institution with implantation of the autograft as freestanding root replacement. The follow-up is 98.7% complete with a mean of 12.2 ± 5.5 years. Mortality at 30-days was 2.0%. Echocardiography documented no or trivial aortic regurgitation in 99.3% of the patients at discharge. Survival probability at 20 years was 85.4%. No case of autograft endocarditis occurred. Autograft deterioration rate was 2.01% per patient-year, and freedom from autograft reoperation was 75.3% at 15 years. A reoperation for autograft aneurysm was required in 35 patients (22.9%) at a mean interval of 11.1 ± 4.6 years after the Ross procedure. A valve-sparing root replacement was performed in 77% of patients, including 10 David and 17 Yacoub procedures with no early mortality. Three patients required prosthetic valve replacement within 2 years after a Yacoub operation. At latest follow-up, 92% of all surviving patients still carry the pulmonary autograft valve. Freedom from autograft valve replacement was 92.1% at 15 years. Using the David or Yacoub techniques, the autograft valve can be preserved in the majority of patients with root aneurysms after the Ross procedure. Reoperations can be performed with no early mortality, a good functional midterm result, and an acceptable reintervention rate. Copyright © 2018 The American Association for Thoracic Surgery. Published by Elsevier Inc. All rights reserved.

  20. The Ross Operation in Children and Young Adults: 12-Year Results and Trends From the UK National Database.

    Science.gov (United States)

    Zebele, Carlo; Chivasso, Pierpaolo; Sedmakov, Christo; Angelini, Gianni; Caputo, Massimo; Parry, Andrew; Stoica, Serban

    2014-07-01

    To determine UK national trends and results of the Ross operation in relation to all aortic valve interventions. Examination of the UK Congenital Central Cardiac Audit Database for all aortic valve procedures performed between 2000 and 2011 in children (0-16 years) and young adults (16-30 years). A total of 2,206 aortic valve procedures were performed in children and 1,824 in young adults, the proportions in the two groups being: Ross operation (19% vs 15%, respectively), surgical valvoplasty (9.5% vs 4%), surgical valvotomy (9.5% vs 1%), aortic valve replacement (AVR; 11% vs 55%), aortic root replacement (4% vs 18%), and balloon valvoplasty (47% vs 7%). The 30-day and 1-year survival after Ross is 99.3% and 98.7%, respectively, in the last four years achieving 100%. In children, the proportion of balloon valvoplasty increased from an average of 43% in 2000 to 2006 to 53% in 2007 to 2011, whereas the Ross operation decreased from 22% to 16% (P Ross (P Ross operations performed. The year-on-year changes show a significant decreasing trend locally and nationally. Despite an excellent track record, the Ross operation is performed less frequently in the United Kingdom. This report is a first step in comparing treatment modalities at national level. © The Author(s) 2014.

  1. The Ross procedure offers excellent survival compared with mechanical aortic valve replacement in a real-world setting.

    Science.gov (United States)

    Andreas, Martin; Wiedemann, Dominik; Seebacher, Gernot; Rath, Claus; Aref, Tandis; Rosenhek, Raphael; Heinze, Georg; Eigenbauer, Ernst; Simon, Paul; Ruetzler, Kurt; Hiesmayr, Joerg-Michael; Moritz, Anton; Laufer, Guenther; Kocher, Alfred

    2014-09-01

    The ideal prosthesis for young patients requiring aortic valve replacement has not been defined to date. Although the Ross procedure provides excellent survival, its application is still limited. We compared the long-term survival after the Ross procedure with mechanical aortic valve replacement. All consecutive Ross procedures and mechanical aortic valve replacements performed between 1991 and 2008 at a single centre were analysed. Only adult patients between 18 and 50 years of age were included in the study. Survival and valve-related complications were evaluated. Furthermore, survival was compared with the age- and sex-matched Austrian population. A total of 159 Ross patients and 173 mechanical valve patients were included. The cumulative survival for the Ross procedure was significantly better, with survival rates of 96, 94 and 93% at 5, 10 and 15 years, respectively, in comparison to 90, 84 and 75% (P Ross group but was significantly reduced in the mechanical valve group. In a real-world setting, the Ross procedure is associated with a long-term survival benefit in young adults in comparison to mechanical aortic valve replacement. © The Author 2014. Published by Oxford University Press on behalf of the European Association for Cardio-Thoracic Surgery. All rights reserved.

  2. Experiencia a largo plazo con la operación de Ross en pacientes pediátricos

    Directory of Open Access Journals (Sweden)

    José M. Caffarena Calvar

    2008-07-01

    Conclusions: The Ross and Ross-Konno operations have changed the prognosis of pediatric patients with complex disease of the valve and aortic root. There is growth of the neo-aortic root in young patients. Sinotubular dilatation of the autograft with neoaortic valve insufficiency has been detected in patients with previously dilated aortic root when root replacement technique was performed. The best results are obtained in the younger andlower weight patients with complex left ventricular outflow obstruction without root dilatation. A close follow-up of patients with aortic root dilatation is mandatory to definitely validate the Ross procedure over aortic prosthesis.

  3. The Satellite Passive-Microwave Record of Sea Ice in the Ross Sea Since Late 1978

    Science.gov (United States)

    Parkinson, Claire L.

    2009-01-01

    Satellites have provided us with a remarkable ability to monitor many aspects of the globe day-in and day-out and sea ice is one of numerous variables that by now have quite substantial satellite records. Passive-microwave data have been particularly valuable in sea ice monitoring, with a record that extends back to August 1987 on daily basis (for most of the period), to November 1970 on a less complete basis (again for most of the period), and to December 1972 on a less complete basis. For the period since November 1970, Ross Sea sea ice imagery is available at spatial resolution of approximately 25 km. This allows good depictions of the seasonal advance and retreat of the ice cover each year, along with its marked interannual variability. The Ross Sea ice extent typically reaches a minimum of approximately 0.7 x 10(exp 6) square kilometers in February, rising to a maximum of approximately 4.0 x 10(exp 6) square kilometers in September, with much variability among years for both those numbers. The Ross Sea images show clearly the day-by-day activity greatly from year to year. Animations of the data help to highlight the dynamic nature of the Ross Sea ice cover. The satellite data also allow calculation of trends in the ice cover over the period of the satellite record. Using linear least-squares fits, the Ross Sea ice extent increased at an average rate of 12,600 plus or minus 1,800 square kilometers per year between November 1978 and December 2007, with every month exhibiting increased ice extent and the rates of increase ranging from a low of 7,500 plus or minus 5,000 square kilometers per year for the February ice extents to a high of 20,300 plus or minus 6,100 kilometers per year for the October ice extents. On a yearly average basis, for 1979-2007 the Ross Sea ice extent increased at a rate of 4.8 plus or minus 1.6 % per decade. Placing the Ross Sea in the context of the Southern Ocean as a whole, over the November 1978-December 2007 period the Ross Sea had

  4. Eesti ülikoolid janunevad muutuste järele : ülikool tegi plaane järgnevaks kuueks aastaks / Marju Himma ; kommenteerivad Peeter Kreitzberg, Tõnis Rüütel, Olga Tšerjomuškina ja Raivo Vare

    Index Scriptorium Estoniae

    Himma, Marju

    2008-01-01

    7. novembril 2008 toimunud Tartu Ülikooli arengukonverentsist. Arvamust avaldavad Riigikogu kultuurikomisjoni esimees Peeter Kreitzberg, Tartu Ülikooli geograafiatudeng Tõnis Rüütel, Eesti Üliõpilaskondade Liidu aseesimees Olga Tšerjomuškina ja Tartu Ülikooli kuratooriumi liige Raivo Vare. Konverentsil esines ka president Toomas Hendrik Ilves

  5. Tolko poetom hotel bõt : Rastrogannost; Dozhdlivõi den; Jaanov ogon; Setumaa I-II; Tolko poetom. Haralskije zhizneopissanija : Aire Valgus; Aare Valgus; Peeter Petrov; Vaike Metsleht; Valdur Laiapea; Hillar Aruda, ekonomist; Pärja Lumendi; Valjo Z

    Index Scriptorium Estoniae

    Traat, Mats, 1936-

    1996-01-01

    Orig.: Heldimus; Sajupäev; Jaanituli; Setumaa I-II; Ainult poeet. Harala elulood: Aire Valgus; Aare Valgus; Peeter Petrov; Vaike Metsleht; Valdur Laiapea; Hillar Aruda, ökonomist; Pärja Lumendi; Valjo Zeiger; Pavlo Moskalenko; Johannes Iva; Viljar Laanemägi; Olga Kaljusaar; Aimi Vaimets; Einard Kalm (1923-1984); Sonetid vaikimisest I; Kui

  6. Physical, chemical, and biological data collected during two research cruises in the Ross Sea, Antarctica from December 2004 to January 2005 and October to November 2005 for Ross Sea Sulfur Dynamics study (NODC Accession 0117322)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This dataset contains transect data from two research cruises to the Ross Sea, Antarctica, aboard the RV Nathaniel B. Palmer (NBP) in December 2004 to January 2005...

  7. A critical reappraisal of the Ross operation: renaissance of the subcoronary implantation technique?

    Science.gov (United States)

    Sievers, Hans H; Hanke, Thorsten; Stierle, Ulrich; Bechtel, Matthias F; Graf, Bernhard; Robinson, Derek R; Ross, Donald N

    2006-07-04

    The autograft procedure, an option in aortic valve replacement, has undergone technical evolution. A considerable debate about the most favorable surgical technique in the Ross operation is still ongoing. Originally described as a subcoronary implant, the full root replacement technique is now the most commonly used technique to perform the Ross principle. Between June of 1994 and June of 2005, the original subcoronary autograft technique was performed in 347 patients. Preoperative, perioperative, and follow-up data were collected and analyzed. Mean patient age at implantation was 44+/-13 years (range 14 to 71 years; 273 male, 74 female). Bicuspid valve morphology was present in 67%. The underlying valve disease was aortic regurgitation in 111 patients, stenosis in 46 patients, combined lesion in 188 patients, and active endocarditis in 22 patients (in 2 patients without stenosis or regurgitation). Concomitant procedures were performed in 130 patients. Clinical and echocardiographic follow-up visits were obtained annually (mean follow up 3.9+/-2.7 years, 1324 patient-years; completeness of follow-up 99.4%). The in-hospital mortality rate was 0.6% (n =2), and the late mortality was 1.7% (n=6), with 5 noncardiac deaths (4 cancer, 1 multiorgan failure after noncardiac surgery) and 1 cardiac death (sudden death). At last follow-up, 94% of the surviving patients were in New York Heart Association class I. Ross procedure-related valvular reoperations were necessary in 9 patients: Three received autograft explants, 5 received homograft explants, and 1 received a combined auto- and homograft explant. At last follow-up visit, autograft/homograft regurgitation grade II was present in 5/10 patients and grade III in 4/0. Maximum/mean pressure gradients were 7.4+/-6.2/3.7+/-2.1 mm Hg across the autograft and 15.3+/-9.4/7.6+/-5.0 mm Hg across the right ventricular outflow tract, respectively. Aortic root dilatation was not observed. Freedom from any valve-related intervention

  8. Phytoplankton blooms during austral summer in the Ross Sea, Antarctica: Driving factors and trophic implications.

    Science.gov (United States)

    Mangoni, Olga; Saggiomo, Vincenzo; Bolinesi, Francesco; Margiotta, Francesca; Budillon, Giorgio; Cotroneo, Yuri; Misic, Cristina; Rivaro, Paola; Saggiomo, Maria

    2017-01-01

    During the austral summer of 2014, an oceanographic cruise was conducted in the Ross Sea in the framework of the RoME (Ross Sea Mesoscale Experiment) Project. Forty-three hydrological stations were sampled within three different areas: the northern Ross Sea (RoME 1), Terra Nova Bay (RoME 2), and the southern Ross Sea (RoME 3). The ecological and photophysiological characteristics of the phytoplankton were investigated (i.e., size structure, functional groups, PSII maximum quantum efficiency, photoprotective pigments), as related to hydrographic and chemical features. The aim was to identify the mechanisms that modulate phytoplankton blooms, and consequently, the fate of organic materials produced by the blooms. The observed biomass standing stocks were very high (e.g., integrated chlorophyll-a up to 371 mg m-2 in the top 100 m). Large differences in phytoplankton community composition, relative contribution of functional groups and photosynthetic parameters were observed among the three subsystems. The diatoms (in different physiological status) were the dominant taxa in RoME 1 and RoME 3; in RoME 1, a post-bloom phase was identified, whereas in RoME 3, an active phytoplankton bloom occurred. In RoME 2, diatoms co-occurred with Phaeocystis antarctica, but were vertically segregated by the upper mixed layer, with senescent diatoms dominating in the upper layer, and P. antarctica blooming in the deeper layer. The dominance of the phytoplankton micro-fraction over the whole area and the high Chl-a suggested the prevalence of non-grazed large cells, independent of the distribution of the two functional groups. These data emphasise the occurrence of significant temporal changes in the phytoplankton biomass in the Ross Sea during austral summer. The mechanisms that drive such changes and the fate of the carbon production are probably related to the variations in the limiting factors induced by the concurrent hydrological modifications to the Ross Sea, and they remain to

  9. CLOUDS IN THE COLDEST BROWN DWARFS: FIRE SPECTROSCOPY OF ROSS 458C

    International Nuclear Information System (INIS)

    Burgasser, Adam J.; Simcoe, Robert A.; Bochanski, John J.; Saumon, Didier; Mamajek, Eric E.; McMurtry, Craig; Pipher, Judith L.; Forrest, William J.; Cushing, Michael C.; Marley, Mark S.

    2010-01-01

    Condensate clouds are a salient feature of L dwarf atmospheres, but have been assumed to play little role in shaping the spectra of the coldest T-type brown dwarfs. Here we report evidence of condensate opacity in the near-infrared spectrum of the brown dwarf candidate Ross 458C, obtained with the Folded-Port Infrared Echellette (FIRE) spectrograph at the Magellan Telescopes. These data verify the low-temperature nature of this source, indicating a T8 spectral classification, log 10 L bol /L sun = -5.62 ± 0.03, T eff = 650 ± 25 K, and a mass at or below the deuterium burning limit. The data also reveal enhanced emission at the K band associated with youth (low surface gravity) and supersolar metallicity, reflecting the properties of the Ross 458 system (age = 150-800 Myr, [Fe/H] = +0.2 to +0.3). We present fits of FIRE data for Ross 458C, the T9 dwarf ULAS J133553.45+113005.2, and the blue T7.5 dwarf SDSS J141624.08+134826.7B, to cloudless and cloudy spectral models from Saumon and Marley. For Ross 458C, we confirm a low surface gravity and supersolar metallicity, while the temperature differs depending on the presence (635 +25 -35 K) or absence (760 +70 -45 K) of cloud extinction. ULAS J1335+1130 and SDSS J1416+1348B have similar temperatures (595 +25 -45 K), but distinct surface gravities (log g = 4.0-4.5 cgs versus 5.0-5.5 cgs) and metallicities ([M/H] ∼ +0.2 versus -0.2). In all three cases, cloudy models provide better fits to the spectral data, significantly so for Ross 458C. These results indicate that clouds are an important opacity source in the spectra of young cold T dwarfs and should be considered when characterizing planetary-mass objects in young clusters and directly imaged exoplanets. The characteristics of Ross 458C suggest that it could itself be regarded as a planet, albeit one whose cosmogony does not conform with current planet formation theories.

  10. Temperature, salinity and oxygen data collected from the Oden in the Amundsen and Ross Seas, 2010 - 2011 (NCEI Accession 0104260)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Data were collected to investigate the physical oceanography of the Amundsen and Ross Seas. Funded under the following projects: Physical Oceanography of the...

  11. A Battle of Words: "Dignity" and "Peace" in the Writings of Elisabeth Kübler-Ross.

    Science.gov (United States)

    Burnier, Daniel

    2017-04-01

    This article analyzes the writings of Elisabeth Kübler-Ross through the discursive lens of the phrase "dying with dignity." For her, the phrase meant allowing someone to die comfortably his/her own death. This phrase has to be understood in relationship with the final "stage of acceptance" of her model. Describing this key part of her well-known scientific output, she often used, in the early 1970s, the phrase "dying in peace and dignity." An evaluation of the evidence suggests that because the concept of dignity was co-opted by the pro-euthanasia movement during this decade, the language of dignity was little by little abandoned by her. In later years, only "peace" survived from her favorite expression. Although this concept of peace remains present to the end in all Kübler-Ross writings, the pro-euthanasia movement has also started to speak the language of peace.

  12. STS-74 Mission Specialists McArther and Ross in OPF

    Science.gov (United States)

    1995-01-01

    In Orbiter Processing Facility Bay 2, STS-74 Mission Specialist William 'Bill' McArthur Jr. (left) and Jerry L. Ross are reviewing the configuration of payload elements in the orbiter Atlantis' payload bay. Ross and McArthur are participating in the Crew Equipment Interface Test (CEIT), an opportunity for flight crew members to become familiar with the payload hardware they will be working with on-orbit. Located in Atlantis' payload bay are the Orbiter Docking System and the Docking Module, two pieces of flight hardware that will play a crucial role in the second docking of the Space Shuttle to the Russian Space Station Mir. STS-74 is currently targeted for an early November launch

  13. Percutaneous valved stent repair of a failed homograft: implications for the Ross procedure.

    Science.gov (United States)

    Pretorius, Victor; Jones, Alan; Taylor, Dylan; Coe, Yashu; Ross, David B

    2008-08-01

    A case of percutaneous pulmonary valve implantation following a failed homograft in the pulmonary position is reported. A 16-year-old boy developed infective endocarditis of his pulmonary homograft, which was implanted four years earlier during a Ross procedure for congenital aortic stenosis. Following successful medical therapy, the boy was symptomatic due to pulmonary stenosis and regurgitation. A 22 mm Melody valve (Medtronic, USA) was successfully implanted percutaneously. His symptoms resolved and he was discharged home one day after the procedure. Echocardiography at the six-month follow-up demonstrated a normally functioning pulmonary valve. Percutaneous pulmonary valve replacement may make the Ross procedure a more attractive option for patients with aortic stenosis, particularly in the pediatric population.

  14. Benthic diatoms (Bacillariophyta) from seepages and streams on James Ross Island (NW Weddell Sea, Antarctica)

    Czech Academy of Sciences Publication Activity Database

    Kopalová, K.; Veselá, J.; Elster, Josef; Nedbalová, Linda; Komárek, Jiří; Van de Vijver, B.

    2012-01-01

    Roč. 145, č. 2 (2012), s. 190-208 ISSN 2032-3913 R&D Projects: GA MŠk ME 934; GA MŠk ME 945; GA ČR GA206/05/0253 Institutional research plan: CEZ:AV0Z60050516 Keywords : James Ross Island * Antarctic Peninsula * Bacillariophyceae Subject RIV: EF - Botanics Impact factor: 1.192, year: 2012

  15. Ross syndrome: A case report and review of cases from India

    Directory of Open Access Journals (Sweden)

    Manoj Kumar Agarwala

    2016-01-01

    Full Text Available Ross syndrome is a rare dysautonomia characterized by a clinical complex of segmental anhidrosis or hypohidrosis, areflexia, and tonic pupils. A very few cases (≃50 have been reported in literature since its original description in 1958. Here, we report the case of a middle-aged homemaker from Odisha, India, who presented with complaints of segmental hypohidrosis for the past 7 years.

  16. Visioni vittoriane: il paesaggio fiorentino nelle opere di Janet Ross e Vernon Lee

    Directory of Open Access Journals (Sweden)

    Gabriele Corsani

    2015-11-01

    Full Text Available Fra l’ultimo scorcio dell’Ottocento e i primi decenni del Novecento Firenze e i suoi dintorni sono il soggetto privilegiato di una grande quantità di descrizioni, note di diario, racconti, opera di scrittori stranieri, in particolare inglesi, che si radicano nell’approdo elettivo di quei luoghi. Il testo presenta la traccia letteraria del paesaggio fiorentino nelle opere di Vernon Lee e Janet Ross, due tipiche rappresentanti di questa tendenza che hanno vissuto, attraverso vicende biografiche in qualche modo parallele, un’esperienza di intensa identificazione con il paesaggio fiorentino. Di Janet Ross, viene commentato Old Florence and Modern Tuscany, volume che raccoglie una serie di articoli pubblicati su alcune riviste inglesi e fornisce una efficace panoramica sull’interesse molto concreto di Janet Ross per il mondo rurale che la vede addirittura impegnata nella gestione della fattoria di Castagnolo, a Lastra a Signa. Più sfaccettato è il commento alle opere di Vernon Lee, di cui sono commentati passi da Vanitas. Polite Stories, Genius Loci, Hortus Vitae and Limbo, in virtù della maggiore ampiezza e complessità del suo mondo culturale. Ne sono cifra distintiva la associazione fra storia e realtà attraverso la dimensione del mistero, che risulta una delle chiavi di acccesso alla bellezza e alla vitalità del paesagggio e la capacità di cogliere il ritmo proprio dei luoghi e di entrare in reale sintonia con essi. 

  17. Forced copulation results in few extrapair fertilizations in Ross's and lesser snow geese.

    Science.gov (United States)

    Dunn; Afton; Gloutney; Alisauskas

    1999-05-01

    Extrapair paternity varies from 0 to over 70% of young among various populations of birds. Comparative studies have suggested that this variation is related to nesting density, breeding synchrony and the proportion of extrapair copulations. We used minisatellite DNA fingerprinting to examine levels of extrapair paternity in Ross's geese, Chen rossi, and lesser snow geese, C. caerulescens c. (hereafter snow geese) nesting in the largest known goose colony in the world. These geese have one of the highest known percentages of extrapair copulation (46-56% of all attempted copulations), and all of these appeared to be forced. Among all successful copulations, 33 and 38% were extrapair in Ross's and snow geese, respectively. Despite the high percentage of extrapair copulations, extrapair paternity was low in both Ross's and snow geese (2-5% of young). Extrapair paternity was not related to nest density in either species. However, in snow geese, extrapair paternity was more likely to occur in nests of females that nested asynchronously, either early or late in the season. This is one of a few reported examples of a negative relationship between extrapair paternity and breeding synchrony. Extrapair young also tended to come from eggs laid later in the clutch. Although forced extrapair copulations appear to be a relatively inefficient reproductive tactic for males, they may provide a reproductive advantage for some males. Copyright 1999 The Association for the Study of Animal Behaviour.

  18. On the dense water spreading off the Ross Sea shelf (Southern Ocean)

    Science.gov (United States)

    Budillon, G.; Gremes Cordero, S.; Salusti, E.

    2002-07-01

    In this study, current meter and hydrological data obtained during the X Italian Expedition in the Ross Sea (CLIMA Project) are analyzed. Our data show a nice agreement with previous data referring to the water masses present in this area and their dynamics. Here, they are used to further analyze the mixing and deepening processes of Deep Ice Shelf Water (DISW) over the northern shelf break of the Ross Sea. In more detail, our work is focused on the elementary mechanisms that are the most efficient in removing dense water from the shelf: either classical mixing effects or density currents that interact with some topographic irregularity in order to drop to deeper levels, or also the variability of the Antarctic Circumpolar Current (ACC) which, in its meandering, can push the dense water off the shelf, thus interrupting its geostrophic flow. We also discuss in detail the (partial) evidence of dramatic interactions of the dense water with bottom particulate, of geological or biological origin, thus generating impulsive or quasi-steady density-turbidity currents. This complex interaction allows one to consider bottom particular and dense water as a unique self-interacting system. In synthesis, this is a first tentative analysis of the effect of bottom particulate on the dense water dynamics in the Ross Sea.

  19. Tidal Modulation of Ice-shelf Flow: a Viscous Model of the Ross Ice Shelf

    Science.gov (United States)

    Brunt, Kelly M.; MacAyeal, Douglas R.

    2014-01-01

    Three stations near the calving front of the Ross Ice Shelf, Antarctica, recorded GPS data through a full spring-neap tidal cycle in November 2005. The data revealed a diurnal horizontal motion that varied both along and transverse to the long-term average velocity direction, similar to tidal signals observed in other ice shelves and ice streams. Based on its periodicity, it was hypothesized that the signal represents a flow response of the Ross Ice Shelf to the diurnal tides of the Ross Sea. To assess the influence of the tide on the ice-shelf motion, two hypotheses were developed. The first addressed the direct response of the ice shelf to tidal forcing, such as forces due to sea-surface slopes or forces due to sub-ice-shelf currents. The second involved the indirect response of ice-shelf flow to the tidal signals observed in the ice streams that source the ice shelf. A finite-element model, based on viscous creep flow, was developed to test these hypotheses, but succeeded only in falsifying both hypotheses, i.e. showing that direct tidal effects produce too small a response, and indirect tidal effects produce a response that is not smooth in time. This nullification suggests that a combination of viscous and elastic deformation is required to explain the observations.

  20. On the outflow of dense water from the Weddell and Ross Seas in OCCAM model

    Directory of Open Access Journals (Sweden)

    R. Kerr

    2012-06-01

    Full Text Available We describe the seasonal and interannual variability of volume transports in the Weddell and Ross Seas using the 1/12° 20-yr simulation of the OCCAM global ocean general circulation model. The average simulated full-depth cumulative volume transports were 28.5 ± 2.9 Sv (1 Sv ≡ 106 m3 s−1 and 13.4 ± 5.2 Sv, across the main export regions of the Weddell and Ross Seas, respectively. The values of mean outflow of Antarctic Bottom Water (AABW (defined by neutral density γn ≥ 28.27 kg m−3 from the Weddell and Ross Seas of 10.6 ± 3.1 Sv and 0.5 ± 0.7 Sv, respectively, agree with the range reported in historical observational studies. The export of Weddell Sea dense water in OCCAM is primarily determined by the strength of the Weddell Gyre. Variability in AABW export is predominantly at periods of ~1 yr and 2–4 yr.

  1. Estimation of the banking sector competition in the CEE countries: The Panzar-Rosse approach

    Directory of Open Access Journals (Sweden)

    Arben Mustafa

    2017-12-01

    Full Text Available Competitive conditions in the banking sectors in the light of transition process in the Central and Eastern Europe countries (CEE has been subject of interest for researchers and policy-makers, especially upon entry of foreign banks and concentrated markets. In this paper the Panzar-Rosse approach is used to assess competition of banking sectors in CEE. By using General Method of Moments on the panel data for 300 banks for the period 1999-2009, empirical evidence indicates that banks operating in the CEE exert monopoly behaviour. From the methodological point of view, the findings suggest that using a price equation or controlling for total assets in a Panzar-Rosse approach produces upwards biased and invalid estimates of the H-statistic. Therefore, further support is provided for maintaining a reducedform revenue equation when estimating a Panzar-Rosse model. The findings also suggest that banks operating in the non-EU countries of the CEE region have exerted stronger market power compared to the banks operating in the EU countries of this region. Policy-makers should improve competitive conditions and general ‘enabling’ environment for the banking sectors, especially the non-EU countries of the CEE region, while balancing competition-stability trade-off.

  2. Preliminary results on the petrology and fluid inclusions of the Rossing uraniferous alaskites

    International Nuclear Information System (INIS)

    Cuney, M.

    1980-01-01

    Petrography, radioactivity distribution and fluid inclusions have been studied in three samples of the Rossing alaskites from the S.H. anomaly outside of the Rossing deposit. After the crystallization of the alaskitic magma which involved oligoclase, biotite, orthoclase and quartz, a deuteric alteration produced a quartz, microcline, albite, muscovite, calcite plus minus chlorite mineral association similar to those observed in several French uraniferous granites. Uranium redistribution occurred during this alteration. From fluid inclusions data, the pressure at the time of the intrusion is estimated to have been at least 6kbar for a temperature of 625 degrees Celsius. Reaction of the magma with the marbles of the Rossing formation led to the boiling of the magma by an increase in the CO 2 partial pressure as well as to its crystallization. Immiscibility between a dense saline (more than 30 per cent NaCl) and CO 2 -rich fluid is proposed to have occurred simultaneously or after the fluid oversaturation of the magma. Part of uraninite is formed at the magmatic stage, another part crystallized from the magmatic fluids in the biotite-rich selvages of the alaskites or in the uraninite-fluorite veins. Uraninite crystallization appears to be mainly controlled by the oxygen fugacity prevailing in the magma and in the surrounding rocks

  3. Atmospheric forcing of sea ice anomalies in the Ross Sea Polynya region

    Science.gov (United States)

    Dale, Ethan; McDonald, Adrian; Rack, Wolfgang

    2016-04-01

    Despite warming trends in global temperatures, sea ice extent in the southern hemisphere has shown an increasing trend over recent decades. Wind-driven sea ice export from coastal polynyas is an important source of sea ice production. Areas of major polynyas in the Ross Sea, the region with largest increase in sea ice extent, have been suggested to produce the vast amount of the sea ice in the region. We investigate the impacts of strong wind events on polynyas and the subsequent sea ice production. We utilize Bootstrap sea ice concentration (SIC) measurements derived from satellite based, Special Sensor Microwave Imager (SSM/I) brightness temperature images. These are compared with surface wind measurements made by automatic weather stations of the University of Wisconsin-Madison Antarctic Meteorology Program. Our analysis focusses on the winter period defined as 1st April to 1st November in this study. Wind data was used to classify each day into characteristic regimes based on the change of wind speed. For each regime, a composite of SIC anomaly was formed for the Ross Sea region. We found that persistent weak winds near the edge of the Ross Ice Shelf are generally associated with positive SIC anomalies in the Ross Sea polynya area (RSP). Conversely we found negative SIC anomalies in this area during persistent strong winds. By analyzing sea ice motion vectors derived from SSM/I brightness temperatures, we find significant sea ice motion anomalies throughout the Ross Sea during strong wind events. These anomalies persist for several days after the strong wing event. Strong, negative correlations are found between SIC within the RSP and wind speed indicating that strong winds cause significant advection of sea ice in the RSP. This rapid decrease in SIC is followed by a more gradual recovery in SIC. This increase occurs on a time scale greater than the average persistence of strong wind events and the resulting Sea ice motion anomalies, highlighting the production

  4. X-ray Ross filter method for impurity transport studies on DIII-D (abstract)

    Science.gov (United States)

    Bogatu, I. N.; Kim, J. S.; Egdell, D. H.; Snider, R. T.; Brooks, N. H.; Wade, M. R.; West, W. P.

    2001-01-01

    The injection of Ar into the region of the DIII-D divertor is a promising technique for energy dissipation (through radiation and collisions) and consequently for reduction of the heat load on the plates. An important problem related to this technique, is the inherent poisoning of the core plasma by migrating Ar. The Ar core contamination seems also to improve the thermal transport in an advanced operating mode of the tokamak. It is therefore of great importance to measure the evolution of the impurity concentration profile within the core plasma. This goal could be achieved by using the Ross filter method in conjunction with the existing x-ray diagnostics on DIII-D. A basic Ross filter system consists of two identical detectors placed behind two different x-ray absorbing foils looking at the same plasma volume. The foils are made of different elements or compounds with adjacent or nearly adjacent atomic numbers. Their accurate thickness causes the x-ray transmission curves of the two foils to be effectively identical over the entire energy range except within the narrow region between their absorption edges. Since the transmission characteristics of the foils above and below their absorption edges are the same, any difference in the two detected signals is proportional to the total x-ray power of the emission spectrum between these two edge energies. An x-ray Ross filter with its energy pass band centered on the Ar XVII Kα line at 3.14 keV has been designed. This allows for the discrimination of the Ar Kα line only, regardless of Ar ionization state, against any background radiation with energies outside the energy pass band. The Ross filter was installed in front of two of the fan shaped poloidal x-ray arrays on DIII-D. The first measurements showed very good discrimination against Ne, another injected impurity. Emissivity profile evolution of the Kα lines and Ar enhanced continuum within the energy pass band of the Ross filter can be determined from the x

  5. Microbial response to different phytoplankton-derived dissolved organic matter sources in the Ross Sea, Antarctica

    Science.gov (United States)

    Sipler, R. E.; Spackeen, J.; McQuaid, J.; Bertrand, E. M.; Roberts, Q. N.; Baer, S. E.; Hutchins, D. A.; Allen, A. E.; Bronk, D. A.

    2016-02-01

    Western Antarctic shelves are highly productive regions that play an important role in global carbon and nitrogen cycles, specifically serving as a critical sink for carbon dioxide. Fixed carbon is stored within the phytoplankton cell as particulate organic matter or released into the surrounding water as dissolved organic matter (DOM). These phytoplankton-derived sources of organic matter support higher trophic levels as well as heterotrophic bacterial growth and respiration. The composition of the phytoplankton-derived organic matter is a function of the taxa as well as the environmental conditions under which it is produced. Phytoplankton community composition within western Antarctic Seas changes throughout Austral spring and summer with early production dominated by ice algae, switching to pelagic diatoms and flagellates later in the season. The goal of this study was to compare the response of Ross Sea microbial communities to DOM produced by ice algae or late season diatoms, specifically recent isolates of Pseudo nitzschia obtained from the Ross Sea. During 5-day bioassay studies, exudates from a natural ice algal community and from Pseudo nitzschia sp. isolates were added to natural microbial communities collected from two different Ross Sea locations, an ice-edge and an ice-covered site. The bacterial response to the DOM additions was greatest in the ice-covered community with a 5 and 3-fold higher bacterial abundance in the ice algae DOM and Pseudo nitzschia DOM treatments, respectively, relative to the control. The ice edge bacterial community responded similarly to both sources with a 2-fold increase in bacterial abundance compared to the control. Unlike the bacterial response, there was little difference in chlorophyll a concentrations between treatments, indicating that phytoplankton growth was not stimulated or inhibited by our additions.

  6. Ross operation in children and young adults: the Alder Hey case series

    Directory of Open Access Journals (Sweden)

    Pozzi Marco

    2004-04-01

    Full Text Available Abstract Background The ideal prosthesis for aortic valve replacement in children and young adults has not been found yet. In recent years there has been a renewed interest in the replacement of aortic valve with the pulmonary autograft owing to its advantages of lack of anticoagulation, potential for growth and excellent haemodynamic performance. The purpose of this study was to review our institutional experience at Alder Hey hospital with the Ross procedure in children and young adults. Methods From November 1996 to September 2003, 38 patients (mean age, 13.1 ± 5.7 years underwent the Ross procedure for various aortic valve diseases using the root replacement technique. Clinical and echocardiographic follow-up was performed early (within 30 days, 3 to 6 months, and yearly after surgery. Medical records of all patients were reviewed retrospectively. Results There was 1 perioperative death. The patients were followed-up for a median interval of 36 months and up to 7 years. One patient died 3 years after surgery secondary to ventricular arrhythmia with overall mortality of 5.3%. Actuarial survival at 7 years was 94 ± 2.5% and there was 100% freedom from reoperation for autograft valve dysfunction or any other cause. Balloon dilatation was required in 2 patients for pulmonary homograft stenosis. The haemodynamics at the latest follow-up were also similar to those at the time of discharge after surgery. There was no progression in the degree of aortic regurgitation for 11 patients with trivial and 3 with mild regurgitation. Conclusion Our experience demonstrates that Ross operation is an attractive option for aortic valve replacement in children and young adults. Not only can the operation be accomplished with a low operative risk but the valve function stays normal over a long period of time with minimal alteration in lifestyle and no need for repeated operations to replace the valve as a result of somatic growth of the children.

  7. Soil micromorphology, geochemistry and microbiology at two sites on James Ross Island, Maritime Antarctica

    Science.gov (United States)

    Meier, Lars A.; Krauze, Patryk; Prater, Isabel; Scholten, Thomas; Wagner, Dirk; Kühn, Peter; Mueller, Carsten W.

    2017-04-01

    Referring to the fundamental question in ecosystem research, how biotic and abiotic processes interact, only a few studies exist for polar regions that integrate microbiological and soil scientific studies . Soils comprise the complex structure and environment that fosters water storage and nutrient cycling determined by its unique chemical, physical and biological properties with respect to the specific climate and parent material. In the extreme environment of Antarctica, soil biological processes are primarily controlled by microbial communities (Bacteria, Archaea and Fungi), and thus microbiota may also determine soils chemical and physical properties in a landscape lacking higher plants at an average air temperature below 0°C. James Ross Island, Maritime Antarctica, offers a pristine laboratory and an exceptional opportunity to study pedogenesis without the influence of vascular plants and burrowing animals. We analysed micromorphological features, chemical and microbiological measures at two sites on James Ross Island (Brandy Bay and St. Martha Cove) with similar substrates (mostly fine-grained calcareous sandstones and siltstones of the Alpha Member of the Santa Martha Formation with varying amounts of conglomerates and mudstones) at similar topographic positions (small plateaus at similar elevation (80m a.s.l.)). The sites represent luv- and leeward conditions with respect to the main southwesterly winds. The climate on James Ross Island is to be described as semi-arid polar-continental, which is in clear contrast to the Southern Shetlands (e.g. King George Island) north of the Antarctic Peninsula. We will present first results of soil physical (bulk density, soil moisture and grains size distribution), pedochemical (SOC, total N and S, pH, CECeff, and pedogenic oxides) micromorphological and microbial analyses (Microbial DNA content, microbial abundances).

  8. Early Winter Sea Ice Dynamics in the Ross Sea from In Situ and Satellite Observations

    Science.gov (United States)

    Maksym, T.; Ackley, S. F.; Stammerjohn, S. E.; Tison, J. L.; Hoeppner, K.

    2017-12-01

    The Ross Sea sea ice cover is one of the few regions of the cryosphere that have been expanding in recent decades. However, 2017 saw a significantly delayed autumn ice advance and record low early winter sea ice extent. Understanding the causes and impacts of this variability has been hampered by a lack of in situ observations. A winter cruise into the Ross Sea in April-June 2017 provided some of the only in situ winter observations of sea ice processes in this region in almost 20 years. We present a first look at data from arrays of drifting buoys deployed in the ice pack and outflow from these polynyas, supplemented by a suite of high-resolution synthetic aperture radar (SAR) data. Additional observations included high-resolution sonar imagery of ice deformation features from an autonomous underwater vehicle, shipboard visual observations of sea ice properties, and in situ measurements of snow and thickness and structural properties. These data show that the delay in ice advance led to a thin, highly dynamic sea ice pack, with substantial ice production and export from the Ross Ice Shelf and Terra Nova Bay polynyas. Despite these high rates of ice production, the pack ice remained thin due to rapid export and northward drift. Compared to the only prior winter observations made in 1995 and 1998, the ice was thinner, with less ridging and snow cover, reflecting a younger ice cover. Granular ice was less prevalent than in these prior cruises, particularly in the outer pack, likely due to less snow ice formation and less pancake ice formation at the advancing ice edge. Despite rapid basal ice growth, the buoy data suggest that deformation may be the dominant mechanism for sea ice thickening in the pack once an initial ice cover forms.

  9. Fine structure of Leydig cells in crabeater, leopard and Ross seals.

    Science.gov (United States)

    Sinha, A A; Erickson, A W; Seal, U S

    1977-01-01

    Ultrastructural study of the Leydig cells of nonbreeding crabeater, leopard and Ross seals showed that three types of cells could be distinguished. Type I cells possessed the cytological features typical of steroid-secreting cells. Type II cells exhibited various features of degeneration, e.g. accumulation of large amounts of lipofuscin granules (residual bodies), lipid droplets, secondary lysosomes, rectangular crystalloids, and previously undescribed 'peculiar bodies'. These cellular inclusions and debris were released into the interstitium to be phagocytosed by macrophages and/or resorbed by the lymphatics. Type III Leydig cells contained large amounts of lipid droplets, sparse cytoplasmic organelles and essentially became lipid storage cells.

  10. William Parsons, 3rd Earl of Rosse astronomy and the castle in nineteenth-century Ireland

    CERN Document Server

    Mollan, R Charles

    2015-01-01

    This is a revealing account of the family life and achievements of the Third Earl of Rosse, a hereditary peer and resident landlord at Birr Castle, County Offaly, in nineteenth-century Ireland, before, during and after the devastating famine of the 1840s. He was a remarkable engineer, who built enormous telescopes in the cloudy middle of Ireland. The book gives details, in an attractive non-technical style which requires no previous scientific knowledge, of his engineering initiatives and the astronomical results, but also reveals much more about the man and his contributions - locally in the

  11. STS-110 M.S. Ross and Smith in M-113 personnel carrier during TCDT

    Science.gov (United States)

    2002-01-01

    KENNEDY SPACE CENTER, FLA. -- With STS-110 Mission Specialists Jerry Ross (far left) and Steven Smith (third from left) on board, Commander Michael Bloomfield scatters dust as he practices driving the M-113 armored personnel carrier. The driving is part of Terminal Countdown Demonstration Test activities, which include emergency egress training and a simulated launch countdown. The TCDT is held at KSC prior to each Space Shuttle flight. Scheduled for launch April 4, the 11-day mission will feature Shuttle Atlantis docking with the International Space Station (ISS) and delivering the S0 truss, the centerpiece-segment of the primary truss structure that will eventually extend over 300 feet.

  12. STS-110 M.S. Ross in M-113 personnel carrier during TCDT

    Science.gov (United States)

    2002-01-01

    KENNEDY SPACE CENTER, FLA. -- STS-110 Mission Specialist Jerry Ross waits his turn at driving the M-113 armored personnel carrier, part of Terminal Countdown Demonstration Test activities. In the background, right, is Mission Specialist Lee Morin. TCDT includes emergency egress training and a simulated launch countdown, and is held at KSC prior to each Space Shuttle flight. Scheduled for launch April 4, the 11-day mission will feature Shuttle Atlantis docking with the International Space Station (ISS) and delivering the S0 truss, the centerpiece-segment of the primary truss structure that will eventually extend over 300 feet.

  13. Multi-Decadal Averages of Basal Melt for Ross Ice Shelf, Antarctica Using Airborne Observations

    Science.gov (United States)

    Das, I.; Bell, R. E.; Tinto, K. J.; Frearson, N.; Kingslake, J.; Padman, L.; Siddoway, C. S.; Fricker, H. A.

    2017-12-01

    Changes in ice shelf mass balance are key to the long term stability of the Antarctic Ice Sheet. Although the most extensive ice shelf mass loss currently is occurring in the Amundsen Sea sector of West Antarctica, many other ice shelves experience changes in thickness on time scales from annual to ice age cycles. Here, we focus on the Ross Ice Shelf. An 18-year record (1994-2012) of satellite radar altimetry shows substantial variability in Ross Ice Shelf height on interannual time scales, complicating detection of potential long-term climate-change signals in the mass budget of this ice shelf. Variability of radar signal penetration into the ice-shelf surface snow and firn layers further complicates assessment of mass changes. We investigate Ross Ice Shelf mass balance using aerogeophysical data from the ROSETTA-Ice surveys using IcePod. We use two ice-penetrating radars; a 2 GHz unit that images fine-structure in the upper 400 m of the ice surface and a 360 MHz radar to identify the ice shelf base. We have identified internal layers that are continuous along flow from the grounding line to the ice shelf front. Based on layer continuity, we conclude that these layers must be the horizons between the continental ice of the outlet glaciers and snow accumulation once the ice is afloat. We use the Lagrangian change in thickness of these layers, after correcting for strain rates derived using modern day InSAR velocities, to estimate multidecadal averaged basal melt rates. This method provides a novel way to quantify basal melt, avoiding the confounding impacts of spatial and short-timescale variability in surface accumulation and firn densification processes. Our estimates show elevated basal melt rates (> -1m/yr) around Byrd and Mullock glaciers within 100 km from the ice shelf front. We also compare modern InSAR velocity derived strain rates with estimates from the comprehensive ground-based RIGGS observations during 1973-1978 to estimate the potential magnitude of

  14. Chili Cookoff: Unique Ingredients Prove Successful in Ross Smith’s Big Pot of Chili | Poster

    Science.gov (United States)

    By Ashley DeVine, Staff Writer If the past is any indication, judges at the Protective Services Chili Cookoff give high marks for chili recipes containing unique or uncommon ingredients. Previous winning recipes have included ingredients such as black beans, pumpkin, pineapple, pork loin, and even bourbon. Judges at the 12th annual event, held Jan. 5, continued this tradition by voting for Ross Smith’s Big Pot of Chili, which featured three types of meat, four different sauces, baker’s chocolate, and parmesan rind.  

  15. Sakramentaalne vaade / Peeter Helme

    Index Scriptorium Estoniae

    Helme, Peeter, 1978-

    2006-01-01

    Kaasajal on materilism muutunud ametlikust ideoloogiast inimeste sisimaks eluvaateks. Materialismi võidukäiguga kaasneb hiilivalt ateism. Eeskujulikus turumajanduses on kadunud võime näha asjadest läbi. "Argisakramentidest" ja sakramentaalsest maailmanägemisest

  16. Kevad Veneetsias / Peeter Pere

    Index Scriptorium Estoniae

    Pere, Peeter, 1957-

    2013-01-01

    Arhitektuuriga haakuvatest töödest 55. Venezia biennaalil. Walter de Maria (USA), Robert Goberi (USA), Andra Ursuta (Rumeenia), Jasper Justi (Taani), Lara Almarcequi (Hispaania) ja Dénes Farkase (Eesti) töödest

  17. Kõrge tunnustus Peeter Mehistole

    Index Scriptorium Estoniae

    2008-01-01

    Inglismaal välja antud raamatu "Uncovering CLIL: Content and Language Integrated Learning in Bilingual and Multilingual Education" (Macmillan, Oxford) eest Edinburgi hertsogi Inglise Keeles Kõnelejate Ühingu auhind- parim õpetajatele kirjutatud raamat 2008

  18. Rahvusvahelised suhted / Peeter Kapten

    Index Scriptorium Estoniae

    Kapten, Peeter

    2004-01-01

    Ilmunud ka: 2003 : annual report : [Eesti Raudtee]. - Tallinn, 2004, lk. 44-45; 2003 : godovoi ottshjot : [Eesti Raudtee]. - Tallinn, 2004, lk. 44-45. Ülevaade AS-i Eesti Raudtee rahvusvahelistest suhetest ja koostööst rahvusvaheliste raudteeorganisatsioonidega

  19. Tõlkesund / Peeter Torop

    Index Scriptorium Estoniae

    Torop, Peeter, 1950-

    2002-01-01

    Bibl. lk. 205-206. Kokkuvõte "Forced translation", lk. 362. Sundtõlkimisest Nõukogude Eestis. Ka August Sanga ja Ants Orase tõlketegevusest ning Ch. Baudelaire'i tõlkekogumiku "Kurja lilled" ettevalmistamisest (koost. A. Sang)

  20. Biography of Peeter Torop

    Index Scriptorium Estoniae

    2010-01-01

    Sünd. 28. nov. 1950 Tallinnas, õppis Tartu 5. Kk. (nüüd Tamme Gümnaasium). 1969-74 õppis TÜ-s vene filol. Töötanud vene kirjanduse kat. kuni 1992, mil tema initsiatiivil moodustati semiootika kateeder

  1. Repliik / Peeter Helme

    Index Scriptorium Estoniae

    Helme, Peeter, 1978-

    2008-01-01

    Saksamaal paari aasta jooksul läbiviidud uurimusest "Sotsiaalne paradiis või Stasi-riik? Õpilaste SDV-pilt - Ida-Lääne võrdlus". Autori küsimus, mida oskaksid sarnasele küsitlusele vastata Eesti õpilased?

  2. Distribution of total alkalinity and pH in the Ross Sea (Antarctica waters during austral summer 2008

    Directory of Open Access Journals (Sweden)

    Paola Rivaro

    2014-10-01

    Full Text Available Measurements of total alkalinity (AT and pH were made in the Ross Sea in January–February 2008 in order to characterize the carbonate system in the Ross Sea and to evaluate the variability associated with different water masses. The main water masses of the Ross Sea, Antarctic Surface Water, High Salinity Shelf Water (HSSW, Deep Ice Shelf Water, Circumpolar Deep Water (CDW and Antarctic Bottom Water, were identified on the basis of the physical and chemical data. In particular, the AT ranged between 2275 and 2374 µmol kg−1 with the lowest values in the surface waters (2275–2346 µmol kg−1, where the influence of the sea-ice melting and of the variability of the physical properties was significant. In the deep layers of the water column, the AT maxima were measured in correspondence to the preferential pathways of the spreading HSSW. The pH had variable values in the surface layer (7.890–8.033 with the highest values in Terra Nova Bay and Ross Sea polynyas. A low pH (7.969±0.025 traced the intrusion of the CDW in the Ross Sea shelf area. All samples revealed waters that were oversaturated with respect to both calcite and aragonite, but near corrosive levels of aragonite saturation state (Ω ca. 1.1–1.2 were associated with the entrainment of CDW over the slope. Aragonite undersaturation is of particular concern for the zooplankton species comprising to calcifying organisms such as pteropods. The partial pressure of CO2 at the sea surface was undersaturated with respect to the atmospheric value, particularly in Terra Nova Bay and the Ross Sea polynyas, but a large variability in the sea–air CO2 fluxes was observed associated with different responses in the strength of the biological and physical processes.

  3. Mixed-phase cloud radiative properties over Ross Island, Antarctica: The influence of various synoptic-scale atmospheric circulation regimes

    Science.gov (United States)

    Scott, Ryan C.; Lubin, Dan

    2014-06-01

    Spectral downwelling shortwave irradiance measurements made beneath overcast stratiform cloud decks at Ross Island, Antarctica (77.5°S, 167°E), are used in conjunction with discrete ordinates-based radiative transfer simulations to examine how mixed-phase clouds influence shortwave irradiance at the surface during austral spring-summer. From 10 October 2012 until 4 February 2013, an Analytical Spectral Devices (ASD, Inc.) spectroradiometer deployed at the Arrival Heights (77.82°S, 166.65°E) laboratory of McMurdo Station measured in 1 min averages the downwelling spectral hemispheric (direct plus diffuse) irradiance spanning visible (VIS) and near-infrared regions of the solar spectrum, from 350 to 2200 nm. Conservative-scattering cloud optical depth τc is retrieved in the interval 1022-1033 nm, where the albedo of the snow-covered surface is lower than at VIS wavelengths. The impact of liquid versus mixed-phase cloud properties on the surface shortwave energy budget is discerned using irradiances in the 1.6 μm window. Five case studies employ NASA A-Train satellite and ancillary meteorological data sets to investigate the macrophysical, microphysical, and shortwave radiative characteristics of clouds possessing distinct meteorological histories. Cloud systems within marine air masses arriving at Ross Island after transiting the West Antarctic ice sheet (WAIS) and the Ross Ice Shelf are radiatively dominated by the ice phase. In contrast, moist marine air moving directly onshore from the Ross Sea brings low clouds with a stronger influence of liquid water. Deep cyclonic disturbances over the Ross Sea are seen to be limited in their ability to deliver significant moisture as far south as Ross Island, where clouds are mainly optically thin.

  4. Evaluation of the Ross fast solution of Richards' equation in unfavourable conditions for standard finite element methods

    International Nuclear Information System (INIS)

    Crevoisier, D.; Voltz, M.; Chanzy, A.

    2009-01-01

    Ross [Ross PJ. Modeling soil water and solute transport - fast, simplified numerical solutions. Agron J 2003;95:1352-61] developed a fast, simplified method for solving Richards' equation. This non-iterative 1D approach, using Brooks and Corey [Brooks RH, Corey AT. Hydraulic properties of porous media. Hydrol. papers, Colorado St. Univ., Fort Collins: 1964] hydraulic functions, allows a significant reduction in computing time while maintaining the accuracy of the results. The first aim of this work is to confirm these results in a more extensive set of problems, including those that would lead to serious numerical difficulties for the standard numerical method. The second aim is to validate a generalisation of the Ross method to other mathematical representations of hydraulic functions. The Ross method is compared with the standard finite element model, Hydrus-1D [Simunek J, Sejna M, Van Genuchten MTh. The HYDRUS-1D and HYDRUS-2D codes for estimating unsaturated soil hydraulic and solutes transport parameters. Agron Abstr 357; 1999]. Computing time, accuracy of results and robustness of numerical schemes are monitored in 1D simulations involving different types of homogeneous soils, grids and hydrological conditions. The Ross method associated with modified Van Genuchten hydraulic functions [Vogel T, Cislerova M. On the reliability of unsaturated hydraulic conductivity calculated from the moisture retention curve. Transport Porous Media 1988:3:1-15] proves in every tested scenario to be more robust numerically, and the compromise of computing time/accuracy is seen to be particularly improved on coarse grids. Ross method run from 1.25 to 14 times faster than Hydrus-1D. (authors)

  5. South Polar Skua breeding populations in the Ross Sea assessed from demonstrated relationship with Adélie Penguin numbers

    Science.gov (United States)

    Wilson, Deborah J.; Lyver, Phil O'B.; Greene, Terry C.; Whitehead, Amy L.; Dugger, Catherine; Karl, Brian J.; Barringer, James R. F.; McGarry, Roger; Pollard, Annie M.; Ainley, David G.

    2017-01-01

    In the Ross Sea region, most South Polar Skuas (Stercorarius maccormicki) nest near Adélie Penguin (Pygoscelis adeliae) colonies, preying and scavenging on fish, penguins, and other carrion. To derive a relationship to predict skua numbers from better-quantified penguin numbers, we used distance sampling to estimate breeding skua numbers within 1000 m of 5 penguin nesting locations (Cape Crozier, Cape Royds, and 3 Cape Bird locations) on Ross Island in 3 consecutive years. Estimated numbers of skua breeding pairs were highest at Cape Crozier (270,000 penguin pairs; 1099 and 1347 skua pairs in 2 respective years) and lowest at Cape Royds (3000 penguin pairs; 45 skua pairs). The log–log linear relationship (R2 = 0.98) between pairs of skuas and penguins was highly significant, and most historical estimates of skua and penguin numbers in the Ross Sea were within 95 % prediction intervals of the regression. Applying our regression model to current Adélie Penguin colony sizes at 23 western Ross Sea locations predicted that 4635 pairs of skuas now breed within 1000 m of penguin colonies in the Ross Island metapopulation (including Beaufort Island) and northern Victoria Land. We estimate, using published skua estimates for elsewhere in Antarctica, that the Ross Sea South Polar Skua population comprises ~50 % of the world total, although this may be an overestimate because of incomplete data elsewhere. To improve predictions and enable measurement of future skua population change, we recommend additional South Polar Skua surveys using consistent distance-sampling methods at penguin colonies of a range of sizes.

  6. STS-55 MS1/PLC Ross and Payload Specialist Walter work in SL-D2 module

    Science.gov (United States)

    1993-01-01

    STS-55 Mission Specialist 1 (MS1) and Payload Commander (PLC) Jerry L. Ross floats near cycle ergometer and Rack 9 Anthrorack (AR) (Human Physiology Laboratory) as German Payload Specialist 1 Ulrich Walter reviews a checklist in front of Rack 11 Experiment Rack. These experiment stations and the crewmembers are in the shirt-sleeve environment of the Spacelab Deutsche 2 (SL-D2) science module onboard the Earth-orbiting Columbia, Orbiter Vehicle (OV) 102. In the background is the SL-D2 aft end cone. Behind Ross and Walter is Rack 12 Experiment Rack with Baroreflex (BA).

  7. EFFECT OF BEE POLLEN DIETARY SUPPLEMENTATION ON MEAT PERFORMANCE OF ROSS 308 BROILER CHICKENS

    Directory of Open Access Journals (Sweden)

    Peter Haščík

    2015-02-01

    Full Text Available A present study was conducted to evaluate the effect of dietary inclusion of bee pollen extract on meat performance of Ross 308 broiler chickens. A total of 180 one day-old Ross chicks were involved in experiment. Chickens were divided into 2 groups, an experimental group (E and a control group (C. No added supplement was given to the control group, while the experimental group was given the feed mixture supplemented with bee pollen in an amount of 400 mg.kg-1, during the whole fattening period. Data of live body weight, carcass weight, giblets weight and carcass yield were determined at 42 days of the age. The supplementation of bee pollen increased final body weight of broilers by 68.5 g. Each of investigated parameters of meat performance in experimental group was higher to that in control group, although the difference among the groups was not statistically significant (P≥0.05. The addition of bee pollen at dose 400 mg.kg-1 in the feed mixture indicates the slight effect on meat performance of chickens which can be beneficial for fattening of broiler chickens.

  8. STS-61B Astronaut Ross Works on Assembly Concept for Construction of Erectable Space Structure

    Science.gov (United States)

    1985-01-01

    The crew assigned to the STS-61B mission included Bryan D. O'Conner, pilot; Brewster H. Shaw, commander; Charles D. Walker, payload specialist; mission specialists Jerry L. Ross, Mary L. Cleave, and Sherwood C. Spring; and Rodolpho Neri Vela, payload specialist. Launched aboard the Space Shuttle Atlantis November 28, 1985 at 7:29:00 pm (EST), the STS-61B mission's primary payload included three communications satellites: MORELOS-B (Mexico); AUSSAT-2 (Australia); and SATCOM KU-2 (RCA Americom). Two experiments were conducted to test assembling erectable structures in space: EASE (Experimental Assembly of Structures in Extravehicular Activity), and ACCESS (Assembly Concept for Construction of Erectable Space Structure). In a joint venture between NASA/Langley Research Center in Hampton, Virginia and the Marshall Space Flight Center (MSFC), EASE and ACCESS were developed and demonstrated at MSFC's Neutral Buoyancy Simulator (NBS). In this STS-61B onboard photo astronaut Ross, located on the Manipulator Foot Restraint (MFR) over the cargo bay, erects ACCESS. The primary objective of this experiment was to test the structural assembly concepts for suitability as the framework for larger space structures and to identify ways to improve the productivity of space construction.

  9. Ross Works on the Assembly Concept for Construction of Erectable Space Structure (ACCESS) During

    Science.gov (United States)

    1985-01-01

    The crew assigned to the STS-61B mission included Bryan D. O'Conner, pilot; Brewster H. Shaw, commander; Charles D. Walker, payload specialist; mission specialists Jerry L. Ross, Mary L. Cleave, and Sherwood C. Spring; and Rodolpho Neri Vela, payload specialist. Launched aboard the Space Shuttle Atlantis November 28, 1985 at 7:29:00 pm (EST), the STS-61B mission's primary payload included three communications satellites: MORELOS-B (Mexico); AUSSAT-2 (Australia); and SATCOM KU-2 (RCA Americom). Two experiments were conducted to test assembling erectable structures in space: EASE (Experimental Assembly of Structures in Extravehicular Activity), and ACCESS (Assembly Concept for Construction of Erectable Space Structure). In a joint venture between NASA/Langley Research Center in Hampton, Virginia, and the Marshall Space Flight Center (MSFC), EASE and ACCESS were developed and demonstrated at MSFC's Neutral Buoyancy Simulator (NBS). In this STS-61B onboard photo, astronaut Ross works on ACCESS high above the orbiter. The primary objective of these experiments was to test the structural assembly concepts for suitability as the framework for larger space structures and to identify ways to improve the productivity of space construction.

  10. STS-61B Astronauts Ross and Spring Work on Experimental Assembly of Structures in Extravehicular

    Science.gov (United States)

    1985-01-01

    The crew assigned to the STS-61B mission included Bryan D. O'Conner, pilot; Brewster H. Shaw, commander; Charles D. Walker, payload specialist; mission specialists Jerry L. Ross, Mary L. Cleave, and Sherwood C. Spring; and Rodolpho Neri Vela, payload specialist. Launched aboard the Space Shuttle Atlantis November 28, 1985 at 7:29:00 pm (EST), the STS-61B mission's primary payload included three communications satellites: MORELOS-B (Mexico); AUSSAT-2 (Australia); and SATCOM KU-2 (RCA Americom). Two experiments were conducted to test assembling erectable structures in space: EASE (Experimental Assembly of Structures in Extravehicular Activity), and ACCESS (Assembly Concept for Construction of Erectable Space Structure). In a joint venture between NASA/Langley Research Center in Hampton, Virginia, and the Marshall Space Flight Center (MSFC), EASE and ACCESS were developed and demonstrated at MSFC's Neutral Buoyancy Simulator (NBS). This STS-61B onboard photo depicts astronauts Ross and Spring working on EASE. The primary objective of these experiments was to test the structural assembly concepts for suitability as the framework for larger space structures and to identify ways to improve the productivity of space construction.

  11. Ross-Kabbani Operation in an Infant with Mitral Valve Dysplasia

    Directory of Open Access Journals (Sweden)

    Carlo Pace Napoleone

    2009-01-01

    Full Text Available Background. Mitral valve replacement can be very difficult to obtain in infants because the valve annulus diameter can be smaller than the available prosthesis. Case Report. We describe the case of a 2-month-old female weighing 3.5 kg affected by mitral valve dysplasia leading to severe valve stenosis. Despite full medication, the clinical conditions were critical and surgery was undertaken. The mitral valve was unsuitable for repair and the orifice of mitral anulus was 12 mm, too small for a mechanical prosthesis. Therefore, a Ross-Kabbani operation was undertaken, replacing the mitral valve with the pulmonary autograft and reconstructing the right ventricular outflow tract with an etherograft. Results. The postoperative course was uneventful and the clinical conditions are good at 4-month follow-up. Conclusion. The Ross-Kabbani operation can be an interesting alternative to mitral valve replacement in infants when valve repair is not achievable and there is little space for an intra-annular mechanical prosthesis implant.

  12. Competition among penguins and cetaceans reveals trophic cascades in the western Ross Sea, Antarctica.

    Science.gov (United States)

    Ainley, David G; Ballard, Grant; Dugger, Katie M

    2006-08-01

    An apparent trophic cascade that appears during summer in the western Ross Sea, Antarctica, explains why the Antarctic silverfish (Pleuragramma antarcticum) there becomes cannibalistic; its principal prey, crystal krill (Euphausia crystallorophias) becomes scarce; and the diatom community is minimally grazed compared to adjacent areas. The krill is the major grazer of diatoms. On the basis of fieldwork at Ross Island, we suggest that the cascade results from foraging by unusually numerous Adélie Penguins (Pygoscelis adeliae), minke whales (Balaenoptera bonaerensis), and fish-eating killer whales (Orcinus orca). These species and other top predators apparently deplete the krill and silverfish. In drawing our conclusions, we were aided by two "natural experiments." In one "experiment," large, grounded icebergs altered the seasonal pattern of change in regional sea-ice cover, but not the seasonal change in penguin diet and foraging behavior that was also detected during the pre-iceberg era. In the other "experiment," a short-term polynya (opening in the ice) brought penguins and whales together in a confined area, this time altering both penguin diet and foraging behavior. We conclude that the foraging of penguins and whales, and not a formerly hypothesized seasonal decrease in sea-ice cover, explains (1) the annual switch in the penguins' prey from krill to silverfish, (2) the subsequent lengthening of penguin foraging trips, and (3) a marked decline of cetaceans in the area later in the season. Reduction in the middle-trophic-level prey is expressed in the relaxed grazing pressure on phytoplankton.

  13. The effect of propolis extract in the diet of chickens Ross 308 on their performance

    Directory of Open Access Journals (Sweden)

    PETER HACK

    2014-12-01

    Full Text Available The focus of the study was the performance of Ross 308 chickens after the application of propolis extract in their diet. The nutritional value of feed mixtures for chickens was equal, but the experimental groups were also added propolis extract in the dose of 200 mg.kg-1 (E1, 300 mg.kg-1 (E2 and 400 mg.kg-1 (E3, respectively. The results of the experiments showed that the propolis extract in the examined concentrations can be applied to the diet of chickens, since it managed to raise (P = 0.05 the body weight positively (E1 2354.60 g; E2 2371.40 g; E3 2382.90 g, compared to control group (2272.89 g. Total increase of body weights indicates positive tendency of propolis extract in the diet of chickens Ross 308, because higher values (P = 0.05 were reached in the experimental groups (2311.60 g E1 to 2339.60 g E3 compared to control (2230.80 g. Total feed consumption was higher in the experimental groups, on the contrary, FCR was lower (P = 0.05 in the experimental groups (1.64 to 1.67 compared to control (1.69. The best performance results were reached in the group with the greatest addition of propolis extract, i.e. in the dose 400 mg.kg-1 of feed mixtures (E3.

  14. Geometric controls of the flexural gravity waves on the Ross Ice Shelf

    Science.gov (United States)

    Sergienko, O. V.

    2017-12-01

    Long-period ocean waves, formed locally or at distant sources, can reach sub-ice-shelf cavities and excite coupled motion in the cavity and the ice shelf - flexural gravity waves. Three-dimensional numerical simulations of the flexural gravity waves on the Ross Ice Shelf show that propagation of these waves is strongly controlled by the geometry of the system - the cavity shape, its water-column thickness and the ice-shelf thickness. The results of numerical simulations demonstrate that propagation of the waves is spatially organized in beams, whose orientation is determined by the direction of the of the open ocean waves incident on the ice-shelf front. As a result, depending on the beams orientation, parts of the Ross Ice Shelf experience significantly larger flexural stresses compared to other parts where the flexural gravity beams do not propagate. Very long-period waves can propagate farther away from the ice-shelf front exciting flexural stresses in the vicinity of the grounding line.

  15. Astronaut Ross Approaches Assembly Concept for Construction of Erectable Space Structure (ACCESS)

    Science.gov (United States)

    1999-01-01

    The crew assigned to the STS-61B mission included Bryan D. O'Conner, pilot; Brewster H. Shaw, commander; Charles D. Walker, payload specialist; mission specialists Jerry L. Ross, Mary L. Cleave, and Sherwood C. Spring; and Rodolpho Neri Vela, payload specialist. Launched aboard the Space Shuttle Atlantis November 28, 1985 at 7:29:00 pm (EST), the STS-61B mission's primary payload included three communications satellites: MORELOS-B (Mexico); AUSSAT-2 (Australia); and SATCOM KU-2 (RCA Americom). Two experiments were conducted to test assembling erectable structures in space: EASE (Experimental Assembly of Structures in Extravehicular Activity), and ACCESS (Assembly Concept for Construction of Erectable Space Structure). In a joint venture between NASA/Langley Research Center in Hampton, Virginia, and the Marshall Space Flight Center (MSFC), EASE and ACCESS were developed and demonstrated at MSFC's Neutral Buoyancy Simulator (NBS). In this STS-61B onboard photo, astronaut Ross, perched on the Manipulator Foot Restraint (MFR) approaches the erected ACCESS. The primary objective of these experiments was to test the structural assembly concepts for suitability as the framework for larger space structures and to identify ways to improve the productivity of space construction.

  16. Changes on the ice plain of Ice Stream B and Ross Ice Shelf

    Science.gov (United States)

    Shabtaie, Sion

    1993-01-01

    During the 1970's and 1980's, nearly 200 stations from which accurate, three dimensional position fixes have been obtained from TRANSIT satellites were occupied throughout the Ross Ice Shelf. We have transformed the elevations obtained by satellite altimetry to the same geodetic datum, and then applied a second transformation to reduce the geodetic heights to elevations above mean sea level using the GEM-10C geoidal height. On the IGY Ross Ice Shelf traverse between Oct. 1957 and Feb. 1958, an accurate method of barometric altimetry was used on a loop around the ice shelf that was directly tied to the sea at both ends of the travel route, thus providing absolute elevations. Comparisons of the two sets of data at 32 station pairs on floating ice show a mean difference of 0 +/- 1 m. The elevation data were also compared with theoretical values of elevations for a hydrostatically floating ice shelf. The mean difference between theoretical and measured values of elevations is -2 +/- 1 m.

  17. Climate change impacts on southern Ross Sea phytoplankton composition, productivity, and export

    Science.gov (United States)

    Kaufman, Daniel E.; Friedrichs, Marjorie A. M.; Smith, Walker O.; Hofmann, Eileen E.; Dinniman, Michael S.; Hemmings, John C. P.

    2017-03-01

    The Ross Sea, a highly productive region of the Southern Ocean, is expected to experience warming during the next century along with reduced summer sea ice concentrations and shallower mixed layers. This study investigates how these climatic changes may alter phytoplankton assemblage composition, primary productivity, and export. Glider measurements are used to force a one-dimensional biogeochemical model, which includes diatoms and both solitary and colonial forms of Phaeocystis antarctica. Model performance is evaluated with glider observations, and experiments are conducted using projections of physical drivers for mid-21st and late-21st century. These scenarios reveal a 5% increase in primary productivity by midcentury and 14% by late-century and a proportional increase in carbon export, which remains approximately 18% of primary production. In addition, scenario results indicate diatom biomass increases while P. antarctica biomass decreases in the first half of the 21st century. In the second half of the century, diatom biomass remains relatively constant and P. antarctica biomass increases. Additional scenarios examining the independent contributions of expected future changes (temperature, mixed layer depth, irradiance, and surface iron inputs from melting ice) demonstrate that earlier availability of low light due to reduction of sea ice early in the growing season is the primary driver of productivity increases over the next century; shallower mixed layer depths additionally contribute to changes of assemblage composition and export. This study further demonstrates how glider data can be effectively used to facilitate model development and simulation, and inform interpretation of biogeochemical observations in the context of climate change.Plain Language SummaryUnderstanding how the global ocean responds to climate change requires knowing the natural behavior of individual regions and anticipating how future changes will affect each region differently. It

  18. Ross Operasyonu

    Directory of Open Access Journals (Sweden)

    Bedri Aldudak

    2004-01-01

    Full Text Available Both congenital and acquired aortic valve defects represent animportant group of diseases in pediatric patients. Since the defects –in formof stenosis, insufficiency or mixed- may finally cause a loss of ventricularfunction and mean a big load for the heart muscle, an interventional orsurgical therapy is required. Although there are various alternatives oftreatment, none of these is really satisfactory. The balloon valvuloplastywhich is especially performed on patients with aortic stenosis does not seemto be a lasting solution. Also the replacement of homografts and mechanicalvalves in aortic position has not been as successful. Particularly problemslike several re-operations, thromboembolic complications, frequentendocarditis, the need of anticoagulants and their risk of bleeding haveforced us to search for new ways of therapy. In this respect the Rossprocedure is the best option for pediatric patients.

  19. Death age, seasonality, taphonomy and colonization of seal carcasses from Ulu Peninsula, James Ross Island, Antarctic Peninsula

    Czech Academy of Sciences Publication Activity Database

    Nývlt, D.; Nývltová Fišáková, Miriam; Barták, M.; Stachoň, Z.; Pavel, V.; Mlčoch, B.; Láska, K.

    2016-01-01

    Roč. 28, č. 1 (2016), s. 3-16 ISSN 0954-1020 Institutional support: RVO:68081758 Keywords : James Ross Island * preservation state * Prince Gustav Channel * sea ice * seal behaviour Subject RIV: EH - Ecology, Behaviour Impact factor: 1.461, year: 2016

  20. An examination of the role of colonial Phaeocystis antarctica in the microbial food web of the Ross Sea

    Science.gov (United States)

    The extensive buildup of phytoplankton biomass in the Ross Sea conflicts with the view that high rates of herbivory occur in all regions of the Southern Ocean. Nano- and microplanktonic consumers comprise a significant fraction of total plankton biomass; however, the importance o...

  1. Men of Good Will: The Religious Education Association, J. Elliot Ross, and the National Conference of Jews and Christians

    Science.gov (United States)

    Nolan, Lucinda A.

    2009-01-01

    An impetus of the Religious Education Association (REA) toward becoming an actively intercultural and interreligious agency emerged in the third decade of its existence. This article explores this period through an examination of the involvement of the REA members, Father John Elliot Ross and others (1884-1946) in a series of seminars conducted by…

  2. 78 FR 56944 - Strata Energy, Inc. (Ross In Situ Recovery Uranium Project); Notice of Atomic Safety and...

    Science.gov (United States)

    2013-09-16

    ... NUCLEAR REGULATORY COMMISSION [Docket No. 40-9091-MLA; ASLBP No. 12-915-01-MLA-BD01] Strata Energy, Inc. (Ross In Situ Recovery Uranium Project); Notice of Atomic Safety and Licensing Board Reconstitution Pursuant to 10 CFR 2.313(c) and 2.321(b), the Atomic Safety and Licensing Board (Board) in the...

  3. A Framework for the Evaluation and Reporting of Outcomes after Complex Heart Valve Interventions: Applications to the European Ross Registry

    NARCIS (Netherlands)

    E.I. Charitos (Efstratios)

    2014-01-01

    markdownabstract__Abstract__ Chapter 1 is the general introduction of the thesis. Chapter 2 presents a proposal on the nomenclature of the aortic root components. Chapters 3 and 4 present the single center results with the subcoronary Ross procedure in the University of Lübeck. Chapter 5

  4. Kaks kuud Kalev SPA-s / kommenteerinud Julia Kurbat, Natalia Nazarenko-Kiivikas, Margit Lipstuhl

    Index Scriptorium Estoniae

    2012-01-01

    Kahe spordiharrastaja Kaur Sau ja Kadri Sõggeli seatud eesmärkidest 2012. aastal ja kehalisest arengust treenides kaks kuud mõnes Tallinna spordiklubis. Treeningutest Kalev Spa Hotel & Water Park'i nimekandvas spordi- ja vabaajakeskuses

  5. Assimilating bio-optical glider data during a phytoplankton bloom in the southern Ross Sea

    Science.gov (United States)

    Kaufman, Daniel E.; Friedrichs, Marjorie A. M.; Hemmings, John C. P.; Smith, Walker O., Jr.

    2018-01-01

    The Ross Sea is a region characterized by high primary productivity in comparison to other Antarctic coastal regions, and its productivity is marked by considerable variability both spatially (1-50 km) and temporally (days to weeks). This variability presents a challenge for inferring phytoplankton dynamics from observations that are limited in time or space, which is often the case due to logistical limitations of sampling. To better understand the spatiotemporal variability in Ross Sea phytoplankton dynamics and to determine how restricted sampling may skew dynamical interpretations, high-resolution bio-optical glider measurements were assimilated into a one-dimensional biogeochemical model adapted for the Ross Sea. The assimilation of data from the entire glider track using the micro-genetic and local search algorithms in the Marine Model Optimization Testbed improves the model-data fit by ˜ 50 %, generating rates of integrated primary production of 104 g C m-2 yr-1 and export at 200 m of 27 g C m-2 yr-1. Assimilating glider data from three different latitudinal bands and three different longitudinal bands results in minimal changes to the simulations, improves the model-data fit with respect to unassimilated data by ˜ 35 %, and confirms that analyzing these glider observations as a time series via a one-dimensional model is reasonable on these scales. Whereas assimilating the full glider data set produces well-constrained simulations, assimilating subsampled glider data at a frequency consistent with cruise-based sampling results in a wide range of primary production and export estimates. These estimates depend strongly on the timing of the assimilated observations, due to the presence of high mesoscale variability in this region. Assimilating surface glider data subsampled at a frequency consistent with available satellite-derived data results in 40 % lower carbon export, primarily resulting from optimized rates generating more slowly sinking diatoms. This

  6. Trends in the breeding population and driving factors of Adélie penguin in the Ross Sea

    Science.gov (United States)

    He, H.; Li, X.; Cheng, X.

    2017-12-01

    Ross Sea regions have been characterized by high penguin-chick-rearing habitat suitability in the recent past. Many studies have been done to study the Adélie penguins in the Ross Sea. However, the data they used both had advantages and drawbacks. Besides, little quantitative analysis were carried out to study the impact factors on the penguin population change. In this study, penguin population data from MAPPPD (Mapping application for penguin populations and projected dynamics) and IBA (Important bird areas in Antarctica) were integrated and analyzed to study the distribution and trends in the breeding population of Adélie penguin over time in the Ross Sea. In addition, linear fitting method for spatial data in time series were used to study the driving factors such as 2m-temperature, sea ice cover and chlorophyll-a concentration which can quantify phytoplankton blooms. Results indicated that there were 45 Adélie penguin colonies in the Ross Sea. Cape Adare and Cape Crozier were two biggest colonies on which current Adélie penguin abundance were 428516 and 280787 breeding pairs, respectively. Among these colonies, penguin population on 28 colonies increased, on 5 colonies decreased and on 5 colonies remained no change over time, and there were also 5 new colonies and one colony which were extinct. It was found that Adélie penguin population in most of colonies in the Ross Sea increased, which meant that Adélie penguins in the Ross Sea were "climate change winners". The main reasons for the increase in Adélie penguin population in the Ross Sea might be the rise in 2m-temperature and the increase in sea ice cover and phytoplankton. Higher temperatures have resulted in glacial retreat and snow melting, which leads to an increase in available habitat for penguins. The increased sea ice and phytoplankton might positively affect the abundance of Antarctic krill that was the major prey item for Adélie penguins in Antarctic.

  7. Iron limitation of a springtime bacterial and phytoplankton community in the Ross Sea: implications for vitamin B12 nutrition

    Directory of Open Access Journals (Sweden)

    Erin M. Bertrand

    2011-08-01

    Full Text Available The Ross Sea is home to some of the largest phytoplankton blooms in the Southern Ocean. Primary production in this system has previously been shown to be iron limited in the summer and periodically iron and vitamin B12 colimited. In this study, we examined trace metal limitation of biological activity in the Ross Sea in the austral spring and considered possible implications for vitamin B12 nutrition. Bottle incubation experiments demonstrated that iron limited phytoplankton growth in the austral spring while B12, cobalt, and zinc did not. This is the first demonstration of iron limitation in a Phaeocystis antarctica-dominated, early season Ross Sea phytoplankton community. The lack of B12 limitation in this location is consistent with previous Ross Sea studies in the austral summer, wherein vitamin additions did not stimulate P. antarctica growth and B12 was limiting only when bacterial abundance was low. Bottle incubation experiments and a bacterial regrowth experiment also revealed that iron addition directly enhanced bacterial growth. B12 uptake measurements in natural water samples and in an iron fertilized bottle incubation demonstrated that bacteria serve not only as a source for vitamin B12, but also as a significant sink, and that iron additions enhanced B12 uptake rates in phytoplankton but not bacteria. Additionally, vitamin uptake rates did not become saturated upon the addition of up to 95 pM B12. A rapid B12 uptake rate was observed after 13 min, which then decreased to a slower constant uptake rate over the next 52 hours. Results from this study highlight the importance of iron availability in limiting early season Ross Sea phytoplankton growth and suggest that rates of vitamin B12 production and consumption may be impacted by iron availability.

  8. New data on Weddell seal (Leptonychotes weddellii colonies: A genetic analysis of a top predator from the Ross Sea, Antarctica.

    Directory of Open Access Journals (Sweden)

    Ighor Antunes Zappes

    Full Text Available In this paper, we studied the genetic variability in Weddell seal from colonies in Terra Nova Bay and Wood Bay, both sites located in the Ross Sea area, Antarctica. Two mitochondrial genes and one nuclear gene, with different mutation rates, were sequenced to investigate the haplotype diversity of the colonies and to test for a possible recent expansion. Fifteen microsatellites were used to analyze their genetic structure. Sequenced genes and microsatellites were also used to estimate the effective population size of the studied colonies and the Ross Sea seal population. The Ross Sea has a high density population of Weddel seals, with an estimated effective number of 50,000 females, and 1,341 individuals for the sampling area, possibly due to its high primary production. The colonies showed high diversity (Hd > 0.90 and many exclusive haplotypes (> 75%, likely a consequence of the surprisingly high site fidelity of Weddell seals, despite the proximity of the colonies. Nevertheless, there was low microsatellite differentiation between colonies, suggesting that they are part of a single larger population. Their expansion seemed to have started during the last glacial cycle (around 58,000 years ago, indicating that the Ross Sea seal populations have been present in the area for long time, probably due to the lack of hunting by humans and terrestrial predation. As a top predator, the role of Weddell seals in the Ross Sea ecology is crucial, and its demographic dynamics should be monitored to follow the future changes of such an important ecosystem.

  9. Pulmonary homograft stenosis in the Ross procedure: Incidence, clinical impact and predictors in long-term follow-up.

    Science.gov (United States)

    Pardo González, Laura; Ruiz Ortiz, Martin; Delgado, Mónica; Mesa, Dolores; Villalba, Rafael; Rodriguez, Sara; Hidalgo, Francisco J; Alados, Pedro; Casares, Jaime; Suarez de Lezo, Jose

    2017-04-01

    The Ross procedure is used in the treatment of selected patients with aortic valve disease. Pulmonary graft stenosis can appear in the long-term follow-up after the Ross intervention, but the factors involved and its clinical implications are not fully known. To describe the incidence, clinical impact and predictors of homograft stenosis and reintervention after the Ross procedure in a prospective series in a tertiary referral hospital. From 1997 to 2009, 107 patients underwent the Ross procedure (mean age: 30±11 years; 69% men; 21 aged36mmHg) and surgical or percutaneous homograft reintervention. After 15 years of follow-up (median: 11 years), echocardiographic and clinical data were available in 91 (85%) and 104 (98%) patients, respectively: 26/91 (29%) patients developed homograft stenosis; 10/104 (10%) patients underwent 13 homograft reintervention procedures (three patients underwent surgical replacement, three received a percutaneous pulmonary valve and one needed stent implantation). The other three patients underwent two consecutive procedures in follow-up; one died because of a procedure-related myocardial infarction. Rates of survival free from homograft stenosis and reintervention at 1, 5 and 10 years were 96%, 82% and 75% and 99%, 94% and 91%, respectively. Paediatric patients had worse survival free from homograft stenosis (hazard ratio [HR] 3.50, 95% confidence interval [CI]: 1.56-7.90; P=0.002), although there were no significant differences regarding reintervention (HR: 2.01, 95% CI: 0.52-7.78; P=0.31). Younger age of homograft donor was also a stenosis predictor (HR: 0.97, 95% CI: 0.94-0.99; P=0.046). The probabilities of homograft stenosis and reintervention 10 years after the Ross procedure were 29% and 10%, respectively; only one patient had a reintervention-related death. Younger donor and recipient age were associated with a higher rate of stenosis. Copyright © 2016 Elsevier Masson SAS. All rights reserved.

  10. Dilatation and Dysfunction of the Neo-aortic Root and in 76 Patients After the Ross Procedure.

    Science.gov (United States)

    Zimmermann, Corina A; Weber, Roland; Greutmann, Matthias; Dave, Hitendu; Müller, Christoph; Prêtre, René; Seifert, Burkhardt; Buechel, Emanuela Valsangiacomo; Kretschmar, Oliver; Attenhofer Jost, Christine H

    2016-08-01

    Pulmonary autograft replacement (Ross procedure) is used as an alternative to prosthetic aortic valve replacement patients with aortic valve disease. There are limited data on incidence and risk factors for dilatation and dysfunction of the neo-aortic after the Ross procedure. Ross procedure was performed in 100 patients at our institution between 1993 and 2011. In 76 patients, complete follow-up data were available. Their median age at surgery was 16 (0.4-58) years (76 % males; 95 % with congenital aortic valve disease). Median follow-up duration was 5.2 years (0.3-16.0 years). We analyzed their clinical and echocardiographic follow-up to identify possible risk factors for neo-aortic root dilatation and dysfunction. Ross procedure included reduction plasty of the native ascending aorta in 25 % of patients. During follow-up, 21 patients (28 %) developed neo-aortic root dilatation, 38 patients (50 %) dilatation oft the native ascending aorta and 7 patients (9 %) at least moderate neo-aortic regurgitation. Univariate risk factors for neo-aortic root dilatation were preoperative aortic regurgitation (p = 0.04), concomitant reduction plasty of the ascending aorta (p = 0.009) and a longer duration of follow-up (p = 0.005). Younger age at surgery was associated with dilatation of the ascending aorta (p = 0.03). Reoperation on the neo-aortic root because of severe dilatation was necessary in 6 patients (8 %), where 2 patients had at least moderate neo-aortic root regurgitation. Neo-aortic root and aortic dilatation are common after the Ross procedure. This is often combined with neo-aortic valve dysfunction. Close follow-up of these patients is mandatory.

  11. Increase in penguin populations during the Little Ice Age in the Ross Sea, Antarctica.

    Science.gov (United States)

    Hu, Qi-Hou; Sun, Li-Guang; Xie, Zhou-Qing; Emslie, Steven D; Liu, Xiao-Dong

    2013-01-01

    Penguins are an important seabird species in Antarctica and are sensitive to climate and environmental changes. Previous studies indicated that penguin populations increased when the climate became warmer and decreased when it became colder in the maritime Antarctic. Here we determined organic markers in a sediment profile collected at Cape Bird, Ross Island, high Antarctic, and reconstructed the history of Adélie penguin colonies at this location over the past 700 years. The region transformed from a seal to a penguin habitat when the Little Ice Age (LIA; 1500-1800 AD) began. Penguins then became the dominant species. Penguin populations were the highest during ca. 1490 to 1670 AD, a cold period, which is contrary to previous results in other regions much farther north. Different responses to climate change may occur at low latitudes and high latitudes in the Antarctic, even if for same species.

  12. Epidemiologic patterns of Ross River virus disease in Queensland, Australia, 2001-2011.

    Science.gov (United States)

    Yu, Weiwei; Mengersen, Kerrie; Dale, Pat; Mackenzie, John S; Toloo, Ghasem Sam; Wang, Xiaoyu; Tong, Shilu

    2014-07-01

    Ross River virus (RRV) infection is a debilitating disease that has a significant impact on population health, economic productivity, and tourism in Australia. This study examined epidemiologic patterns of RRV disease in Queensland, Australia, during January 2001-December 2011 at a statistical local area level. Spatio-temporal analyses were used to identify the patterns of the disease distribution over time stratified by age, sex, and space. The results show that the mean annual incidence was 54 per 100,000 persons, with a male:female ratio of 1:1.1. Two space-time clusters were identified: the areas adjacent to Townsville, on the eastern coast of Queensland, and the southeast areas. Thus, although public health intervention should be considered across all areas in which RRV occurs, it should specifically focus on high-risk regions, particularly during summer and autumn to reduce the social and economic impacts of RRV infection. © The American Society of Tropical Medicine and Hygiene.

  13. Depositional history of artificial radionuclides in the Ross Ice Shelf, Antarctica

    International Nuclear Information System (INIS)

    Koide, M.; Michel, R.; Goldberg, E.D.; Herron, M.M.; Langway, C.C. Jr.

    1979-01-01

    The annual fluxes of artificial radionuclides ( 238 Pu, sup(239 + 240)Pu, 241 Am, 137 Cs, 90 Sr and 3 H) from the atmosphere to the Ross Ice Shelf in Antarctica were determined from measurements in strata dated by 201 Pb. Recognizable sources include the U.S tests (Mike-Ivy and Castle Hill) in the early 1950s, the U.S.S.R. tests of the early 1960s, the SNAP-9A burnup of 1964 and the French and Chinese tests in the late 1960s and 1970s. There are several problems still awaiting resolution: the differences in atmospheric chemistries of fission products and of transuranics produced in weapons tests and the anomalous fluxes of 238 Pu to the ice shelf which do not appear to reflect a one-year stratospheric residence. There is no evidence for a smearing of the fallout record as a consequence of diffusion of these radionuclides in the glacial column. (Auth.)

  14. The Dehumanizing American Dream in David Mamet’s Glengarry Glen Ross

    Directory of Open Access Journals (Sweden)

    Mehdi Sepehrmanesh

    2014-01-01

    Full Text Available The American Dream is a recurrent theme in American literature. In this response, this paper is an attempt to expose the destructive effects of the dream on the human spirit. It is also shown, through the analysis of David Mamet’s glengarry Glen Ross, that despite the promise of the dream it contains many contradictions. Beneath the seeming simple surface of the play lies a deep current of meanings that reflect the calamities of modern American life, and in a broader sense, the modern world. This article indicates how capitalism inculcates ideologies in the mind of individuals in order to facilitate the exploiting process and unquestioning subordination. Ragged individualism, for instance, as  the most prominent of these ideologies, disrupts all communal bonds and even exceeds to the disintegration of friendship and family life.

  15. STS-55 MS1/PLC Ross monitors Payload Specialist Walter's Anthrorack activity

    Science.gov (United States)

    1993-01-01

    STS-55 German Payload Specialist 1 Ulrich Walter breathes into Rack 9 Anthrorack (AR) (Human Physiology Laboratory) device for Pulmonary Perfusion and Ventilation During Rest and Exercise experiment while working inside the Spacelab Deutsche 2 (SL-D2) science module aboard the Earth-orbiting Columbia, Orbiter Vehicle (OV) 102. Seated on the bicycle ergometer, Walter utilizes the respiratory monitoring system, part of a broad battery of experiments designed to investigate human physiology under microgravity conditions. In the background, Mission Specialist 1 (MS1) and Payload Commander (PLC) Jerry L. Ross monitors Walter's activity. Walter represents the German Aerospace Research Establishment (DLR) on the 10-day SL-D2 mission. Visible on the aft end cone are a fire extinguisher and the Crew Telesupport Experiment (CTE) Macintosh portable computer mounted on an adjustable work platform.

  16. Rapid Holocene thinning of outlet glaciers followed by readvance in the western Ross Embayment, Antarctica

    Science.gov (United States)

    Jones, R. S.; Whitmore, R.; Mackintosh, A.; Norton, K. P.; Eaves, S.; Stutz, J.

    2017-12-01

    Investigating Antarctic deglaciation following the LGM provides an opportunity to better understand patterns, mechanisms and drivers of ice sheet retreat. In the Ross Sea sector, geomorphic features preserved on the seafloor indicate that streaming East Antarctic outlet glaciers once extended >100 km offshore of South Victoria Land prior to back-stepping towards their modern configurations. In order to adequately interpret the style and causes of this retreat, the timing and magnitude of corresponding ice thickness change is required. We present new constraints on ice surface lowering from Mawson Glacier, an outlet of the East Antarctic Ice Sheet that flows into the western Ross Sea. Surface-exposure (10Be) ages from samples collected in elevation transects above the modern ice surface reveal that rapid thinning occurred at 5-8 ka, broadly coeval with new ages of grounding-line retreat at 6 ka and rapid thinning recorded at nearby Mackay Glacier at 7 ka. Our data also show that a moraine formed near to the modern ice margin of Mawson Glacier at 0.8 ka, which, together with historical observations, indicates that glaciers in this region readvanced during the last thousand years. We argue that 1) the accelerated thinning of outlet glaciers was driven by local grounding-line retreat through overdeepened basins during the early-mid Holocene, and 2) the glaciers subsequently readvanced, possibly linked to late Holocene sea-ice expansion, before retreating to their current positions. Our work demonstrates that these outlet glaciers were closely coupled to environmental and topography-induced perturbations near their termini throughout the Holocene.

  17. Ross River virus in Australian blood donors: possible implications for blood transfusion safety.

    Science.gov (United States)

    Faddy, Helen M; Tran, Thu V; Hoad, Veronica C; Seed, Clive R; Viennet, Elvina; Chan, Hiu-Tat; Harley, Robert; Hewlett, Elise; Hall, Roy A; Bielefeldt-Ohmann, Helle; Flower, Robert L P; Prow, Natalie A

    2018-02-01

    Emerging transfusion-transmissible pathogens, including arboviruses such as West Nile, Zika, dengue, and Ross River viruses, are potential threats to transfusion safety. The most prevalent arbovirus in humans in Australia is Ross River virus (RRV); however, prevalence varies substantially around the country. Modeling estimated a yearly risk of 8 to 11 potentially RRV-viremic fresh blood components nationwide. This study aimed to measure the occurrence of RRV viremia among donors who donated at Australian collection centers located in areas with significant RRV transmission during one peak season. Plasma samples were collected from donors (n = 7500) who donated at the selected collection centers during one peak season. Viral RNA was extracted from individual samples, and quantitative reverse transcription-polymerase chain reaction was performed. Regions with the highest rates of RRV transmission were not areas where donor centers were located. We did not detect RRV RNA among 7500 donations collected at the selected centers, resulting in a zero risk estimate with a one-sided 95% confidence interval of 0 to 1 in 2019 donations. Our results suggest that the yearly risk of collecting a RRV-infected blood donation in Australia is low and is at the lower range of previous risk modeling. The majority of Australian donor centers were not in areas known to be at the highest risk for RRV transmission, which was not taken into account in previous models based on notification data. Therefore, we believe that the risk of RRV transfusion transmission in Australia is acceptably low and appropriately managed through existing risk management, including donation restrictions and recall policies. © 2018 AABB.

  18. The Ross Procedure in Patients among the Pediatric Population, Post Ten Years of Experience

    Directory of Open Access Journals (Sweden)

    Andrey A. Ivanov

    2013-09-01

    Full Text Available The aim of the study was to analyze the results of the surgical treatment in pediatric patients who had undergone the Ross procedure.Material and Methods: The study involved 114 patients between 12 days to 18 years in age. The early and late (up to 5 years results of the treatment were studied. The examination included echocardiography, catheterization of the cardiac chambers and angiocardiography. The case distribution of patients based on diagnosis was as follows: isolated aortic valve stenosis (IAVS in 38 (33.3% patients, aortic valve insufficiency (AVI in 33 (28.9%, and combined heart defects in 56 patients (49.1%.Results: The death rate was 6.14% during the early postoperative period and 1.14% in the late postoperative period; the actuarial survival in the long-term was 98.86%. The complication rate was 51.5%. The most frequent complication was pericarditis (25.6%, whereas cardiac and respiratory failure occurred in 7.6% of the cases and cardiac arrhythmias in 6.1% of the cases. The average time spent in the intensive care unit was 3.48 ± 2.90 days; the hospitalization period on average was 24.70±10.87 days. After surgery, there was a tendency of the echocardiographic parameters to move toward normalization. The frequency of reoperation in the late period was 23.7%, the main reason for which being the conduit dysfunction in the position of the pulmonary artery (PA.Conclusion: The clinical efficacy of the Ross procedure in the treatment of aortic valve malformations in the pediatric group was confirmed. However, in some cases, the need to perform repeated operations due to the increase in the ring size and an increase in the neo-aortic insufficiency during the somatic growth process.

  19. Ross Sea Polynyas: Response of Ice Concentration Retrievals to Large Areas of Thin Ice

    Science.gov (United States)

    Kwok, R.; Comiso, J. C.; Martin, S.; Drucker, R.

    2007-01-01

    For a 3-month period between May and July of 2005, we examine the response of the Advanced Microwave Scanning Radiometer (AMSR-E) Enhanced NASA Team 2 (NT2) and AMSR-E Bootstrap (ABA) ice concentration algorithms to large areas of thin ice of the Ross Sea polynyas. Coincident Envisat Synthetic Aperture Radar (SAR) coverage of the region during this period offers a detailed look at the development of the polynyas within several hundred kilometers of the ice front. The high-resolution imagery and derived ice motion fields show bands of polynya ice, covering up to approximately 105 km(sup 2) of the Ross Sea, that are associated with wind-forced advection. In this study, ice thickness from AMSR-E 36 GHz polarization information serves as the basis for examination of the response. The quality of the thickness of newly formed sea ice (<10 cm) from AMSR-E is first assessed with thickness estimates derived from ice surface temperatures from the Moderate Resolution Imaging Spectroradiometer (MODIS) instrument. The effect of large areas of thin ice in lowering the ice concentration estimates from both NT2/ABA approaches is clearly demonstrated. Results show relatively robust relationships between retrieved ice concentrations and thin ice thickness estimates that differ between the two algorithms. These relationships define the approximate spatial coincidence of ice concentration and thickness isopleths. Using the 83% (ABA) and 91% (NT2) isopleths as polynya boundaries, we show that the computed coverage compares well with that using the estimated 10-cm thickness contour. The thin ice response characterized here suggests that in regions with polynyas, the retrieval results could be used to provide useful geophysical information, namely thickness and coverage.

  20. Duality of Ross Ice Shelf systems: crustal boundary, ice sheet processes and ocean circulation from ROSETTA-Ice surveys

    Science.gov (United States)

    Tinto, K. J.; Siddoway, C. S.; Padman, L.; Fricker, H. A.; Das, I.; Porter, D. F.; Springer, S. R.; Siegfried, M. R.; Caratori Tontini, F.; Bell, R. E.

    2017-12-01

    Bathymetry beneath Antarctic ice shelves controls sub-ice-shelf ocean circulation and has a major influence on the stability and dynamics of the ice sheets. Beneath the Ross Ice Shelf, the sea-floor bathymetry is a product of both tectonics and glacial processes, and is influenced by the processes it controls. New aerogeophysical surveys have revealed a fundamental crustal boundary bisecting the Ross Ice Shelf and imparting a duality to the Ross Ice Shelf systems, encompassing bathymetry, ocean circulation and ice flow history. The ROSETTA-Ice surveys were designed to increase the resolution of Ross Ice Shelf mapping from the 55 km RIGGS survey of the 1970s to a 10 km survey grid, flown over three years from New York Air National Guard LC130s. Radar, LiDAR, gravity and magnetic instruments provide a top to bottom profile of the ice shelf and the underlying seafloor, with 20 km resolution achieved in the first two survey seasons (2015 and 2016). ALAMO ocean-profiling floats deployed in the 2016 season are measuring the temperature and salinity of water entering and exiting the sub-ice water cavity. A significant east-west contrast in the character of the magnetic and gravity fields reveals that the lithospheric boundary between East and West Antarctica exists not at the base of the Transantarctic Mountains (TAM), as previously thought, but 300 km further east. The newly-identified boundary spatially coincides with the southward extension of the Central High, a rib of shallow basement identified in the Ross Sea. The East Antarctic side is characterized by lower amplitude magnetic anomalies and denser TAM-type lithosphere compared to the West Antarctic side. The crustal structure imparts a fundamental duality on the overlying ice and ocean, with deeper bathymetry and thinner ice on the East Antarctic side creating a larger sub-ice cavity for ocean circulation. The West Antarctic side has a shallower seabed, more restricted ocean access and a more complex history of

  1. Temperature profile data collected using CTD casts from the JAMES CLARK ROSS in the South Atlantic Ocean from 15 November 1994 to 21 November 1994 (NODC Accession 0000873)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Temperature profile data were collected using CTD casts in the South Atlantic Ocean from JAMES CLARK ROSS. Data were collected from 15 November 1994 to 21 November...

  2. "All this that has happened to me shouldn't happen to nobody else": Loretta Ross and the Women of Color Reproductive Freedom Movement of the 1980s.

    Science.gov (United States)

    Nelson, Jennifer

    2010-01-01

    Loretta Ross exemplifies women of color feminist participation in and transformation of the women's health movement of the 1970s and 1980s. Ross helped build a women's health movement that by the late 1980s made the demands of women of color central. This movement was attractive to many women of color who had rejected the collapse of a broader women's health movement into the abortion rights movement as too narrowly focused. Many women of color activists, including Ross, argued that the emphasis on abortion rights and choice failed to address the linked socioeconomic and community health issues confronted by many women of color and poor women. Ross's work spurred coalition building among white women and women of color that focused on expanding reproductive justice and women's health beyond legal abortion. By the 1990s these efforts had produced a vibrant and engaged feminist reproductive justice movement that promoted the socioeconomics of good health for all women.

  3. Survival comparison of the Ross procedure and mechanical valve replacement with optimal self-management anticoagulation therapy: propensity-matched cohort study.

    Science.gov (United States)

    Mokhles, M Mostafa; Körtke, Heinrich; Stierle, Ulrich; Wagner, Otto; Charitos, Efstratios I; Bogers, Ad J J C; Gummert, Jan; Sievers, Hans-Hinrich; Takkenberg, Johanna J M

    2011-01-04

    It is suggested that in young adults the Ross procedure results in better late patient survival compared with mechanical prosthesis implantation. We performed a propensity score-matched study that assessed late survival in young adult patients after a Ross procedure versus that after mechanical aortic valve replacement with optimal self-management anticoagulation therapy. We selected 918 Ross patients and 406 mechanical valve patients 18 to 60 years of age without dissection, aneurysm, or mitral valve replacement who survived an elective procedure (1994 to 2008). With the use of propensity score matching, late survival was compared between the 2 groups. Two hundred fifty-three patients with a mechanical valve (mean follow-up, 6.3 years) could be propensity matched to a Ross patient (mean follow-up, 5.1 years). Mean age of the matched cohort was 47.3 years in the Ross procedure group and 48.0 years in the mechanical valve group (P=0.17); the ratio of male to female patients was 3.2 in the Ross procedure group and 2.7 in the mechanical valve group (P=0.46). Linearized all-cause mortality rate was 0.53% per patient-year in the Ross procedure group compared with 0.30% per patient-year in the mechanical valve group (matched hazard ratio, 1.86; 95% confidence interval, 0.58 to 5.91; P=0.32). Late survival was comparable to that of the general German population. In comparable patients, there is no late survival difference in the first postoperative decade between the Ross procedure and mechanical aortic valve implantation with optimal anticoagulation self-management. Survival in these selected young adult patients closely resembles that of the general population, possibly as a result of highly specialized anticoagulation self-management, better timing of surgery, and improved patient selection in recent years.

  4. Colonial Fantasies, Narrative Borders, and the Canadian North in the Works of Germany's Colin Ross(1885-1945

    Directory of Open Access Journals (Sweden)

    Nicole Pissowotzki

    2009-03-01

    Full Text Available This paper argues that the Canadian North is a discursive construction, within which German colonial fantasies emerge. In particular, I argue that it is through bordering that colonial fantasies of German Lebensraum ("living space" in the Canadian North are brought into being. I further argue that the German biologist and geographer Friedrich Ratzel (1844-1904, with his view of the "organic state," provides the ideological framework for colonial fantasies in the travel writings of Colin Ross. I focus on the writer's colonial imagination and his perception of borders, and on how both relate to the Canadian North. I show that seemingly bare geographical information and demographical data, provided in Ross' travelogues, carry colonial fantasies of German spaces in the Canadian North. Those spaces are bordered by "shared histories" and "narrative boundaries," thus constructing a collective German colonial identity (cf. Eder 2006, 255-257.

  5. Infrared speckle observations of the binary Ross 614 AB - combined shift-and-add and zero-and-add analysis

    International Nuclear Information System (INIS)

    Davey, B.L.K.; Bates, R.H.T.; Cocke, W.J.; Mccarthy, D.W. Jr.; Christou, J.C.

    1989-01-01

    One-dimensional infrared speckle scans of Ross 614 AB were recorded at a wavelength of 2.2 microns, and the three bins corresponding to the three best seeing conditions were further processed by applying a shift-and-add algorithm to the set of images contained within each bin, generating three shift-and-add images with differing shift-and-add point-spread functions. A zero-and-add technique was used to deconvolve the three shift-and-add images in order to obtain parameters corresponding to the separation and the brightness ratio of a two-component model of Ross 614 Ab. Least-squares analysis results reveal a separation of 1.04 arcsec and a brightness ratio of 4.3 for the binary system at this wavelength. 31 refs

  6. Is the Ross procedure a riskier operation? Perioperative outcome comparison with mechanical aortic valve replacement in a propensity-matched cohort.

    Science.gov (United States)

    Bouhout, Ismail; Noly, Pierre-Emmanuel; Ghoneim, Aly; Stevens, Louis-Mathieu; Cartier, Raymond; Poirier, Nancy; Bouchard, Denis; Demers, Philippe; El-Hamamsy, Ismail

    2017-01-01

    The aim of this study was to compare perioperative outcomes in young adults following isolated Ross procedure versus mechanical aortic valve replacement (AVR) in a high-volume centre. From 2007 to 2015, 337 elective isolated mechanical AVRs and 137 Ross procedures were performed in young adults (Ross cohort versus six (9%) in the mechanical AVR cohort (P = 0.49). A significant increase in serum creatinine (>2-fold increase) was more commonly observed after the Ross procedure (11 vs 1%; P = 0.03), but there was no significant difference in the rate of temporary dialysis. Twenty-seven patients (39%) required ≥1 blood product transfusion in the Ross group, whereas 21 patients (31%) did so in the mechanical AVR group (P = 0.47). Median hospital length of stay was similar in both the groups (6 days). There are no differences in mortality or major perioperative outcomes in adults undergoing an isolated Ross procedure or mechanical AVR. © The Author 2016. Published by Oxford University Press on behalf of the European Association for Cardio-Thoracic Surgery. All rights reserved.

  7. Mapping Ross Ice Shelf with ROSETTA-Ice airborne laser altimetry

    Science.gov (United States)

    Becker, M. K.; Fricker, H. A.; Padman, L.; Bell, R. E.; Siegfried, M. R.; Dieck, C. C. M.

    2017-12-01

    The Ross Ocean and ice Shelf Environment and Tectonic setting Through Aerogeophysical surveys and modeling (ROSETTA-Ice) project combines airborne glaciological, geological, and oceanographic observations to enhance our understanding of the history and dynamics of the large ( 500,000 square km) Ross Ice Shelf (RIS). Here, we focus on the Light Detection And Ranging (LiDAR) data collected in 2015 and 2016. This data set represents a significant advance in resolution: Whereas the last attempt to systematically map RIS (the surface-based RIGGS program in the 1970s) was at 55 km grid spacing, the ROSETTA-Ice grid has 10-20 km line spacing and much higher along-track resolution. We discuss two different strategies for processing the raw LiDAR data: one that requires proprietary software (Riegl's RiPROCESS package), and one that employs open-source programs and libraries. With the processed elevation data, we are able to resolve fine-scale ice-shelf features such as the "rampart-moat" ice-front morphology, which has previously been observed on and modeled for icebergs. This feature is also visible in the ROSETTA-Ice shallow-ice radar data; comparing the laser data with radargrams provides insight into the processes leading to their formation. Near-surface firn state and total firn air content can also be investigated through combined analysis of laser altimetry and radar data. By performing similar analyses with data from the radar altimeter aboard CryoSat-2, we demonstrate the utility of the ROSETTA-Ice LiDAR data set in satellite validation efforts. The incorporation of the LiDAR data from the third and final field season (December 2017) will allow us to construct a DEM and an ice thickness map of RIS for the austral summers of 2015-2017. These products will be used to validate and extend observations of height changes from satellite radar and laser altimetry, as well as to update regional models of ocean circulation and ice dynamics.

  8. Osteoblasts from osteoarthritis patients show enhanced susceptibility to Ross River virus infection associated with delayed type I interferon responses

    OpenAIRE

    Chen, Weiqiang; Foo, Suan-Sin; Li, Rachel W; Smith, Paul N; Mahalingam, Suresh

    2014-01-01

    Background Arthritogenic alphaviruses such as Ross River virus (RRV) and chikungunya virus (CHIKV) have caused widespread outbreaks of chronic polyarthritis. The inflammatory responses in alphavirus-induced arthritis and osteoarthritis (OA) share many similar features, which suggests the possibility of exacerbated alphavirus-induced bone pathology in individuals with pre-existing OA. Here, we investigated the susceptibility of osteoblasts (OBs) from OA patients to RRV infection and dissected ...

  9. Serum chemistry and antibodies against pathogens in antarctic fur seals, Weddell seals, crabeater seals, and Ross seals.

    Science.gov (United States)

    Tryland, Morten; Nymo, Ingebjørg H; Nielsen, Ole; Nordøy, Erling S; Kovacs, Kit M; Krafft, Bjørn A; Thoresen, Stein I; Åsbakk, Kjetil; Osterrieder, Klaus; Roth, Swaantje J; Lydersen, Christian; Godfroid, Jacques; Blix, Arnoldus S

    2012-07-01

    Information on health parameters, such as antibody prevalences and serum chemistry that can reveal exposure to pathogens, disease, and abnormal physiologic conditions, is scarce for Antarctic seal species. Serum samples from Antarctic fur seals (Arctocephalus gazella, n=88) from Bouvetøya (2000-2001 and 2001-2002), and from Weddell seals (Leptonychotes weddellii, n=20), Ross seals (Ommatophoca rossii, n=20), and crabeater seals (Lobodon carcinophagus, n=9) from the pack-ice off Queen Maud Land, Antarctica (2001) were analyzed for enzyme activity, and concentrations of protein, metabolites, minerals, and cortisol. Adult Antarctic fur seal males had elevated levels of total protein (range 64-99 g/l) compared to adult females and pups (range 52-79 g/l). Antarctic fur seals had higher enzyme activities of creatine kinase, lactate dehydrogenase, and amylase, compared to Weddell, Ross, and crabeater seals. Antibodies against Brucella spp. were detected in Weddell seals (37%), Ross seals (5%), and crabeater seals (11%), but not in Antarctic fur seals. Antibodies against phocine herpesvirus 1 were detected in all species examined (Antarctic fur seals, 58%; Weddell seals, 100%; Ross seals, 15%; and crabeater seals, 44%). No antibodies against Trichinella spp., Toxoplasma, or phocine distemper virus (PDV) were detected (Antarctic fur seals were not tested for PDV antibodies). Antarctic seals are challenged by reduced sea ice and increasing temperatures due to climate change, and increased anthropogenic activity can introduce new pathogens to these vulnerable ecosystems and represent a threat for these animals. Our data provide a baseline for future monitoring of health parameters of these Antarctic seal species, for tracking the impact of environmental, climatic, and anthropogenic changes in Antarctica over time.

  10. A NEW ANALYSIS OF THE TWO CLASSICAL ZZ CETI WHITE DWARFS GD 165 AND ROSS 548. II. SEISMIC MODELING

    International Nuclear Information System (INIS)

    Giammichele, N.; Fontaine, G.; Brassard, P.; Charpinet, S.

    2016-01-01

    We present the second of a two-part seismic analysis of the bright, hot ZZ Ceti stars GD 165 and Ross 548. In this second part, we report the results of detailed searches in parameter space for identifying an optimal model for each star that can account well for the observed periods, while being consistent with the spectroscopic constraints derived in our first paper. We find optimal models for each target that reproduce the six observed periods well within ∼0.3% on the average. We also find that there is a sensitivity on the core composition for Ross 548, while there is practically none for GD 165. Our optimal model of Ross 548, with its thin envelope, indeed shows weight functions for some confined modes that extend relatively deep into the interior, thus explaining the sensitivity of the period spectrum on the core composition in that star. In contrast, our optimal seismic model of its spectroscopic sibling, GD 165 with its thick envelope, does not trap/confine modes very efficiently, and we find weight functions for all six observed modes that do not extend into the deep core, hence accounting for the lack of sensitivity in that case. Furthermore, we exploit after the fact the observed multiplet structure that we ascribe to rotation. We are able to map the rotation profile in GD 165 (Ross 548) over the outermost ∼20% (∼5%) of its radius, and we find that the profile is consistent with solid-body rotation

  11. Oceanographic mechanisms and penguin population increases during the Little Ice Age in the southern Ross Sea, Antarctica

    Science.gov (United States)

    Yang, Lianjiao; Sun, Liguang; Emslie, Steven D.; Xie, Zhouqing; Huang, Tao; Gao, Yuesong; Yang, Wenqing; Chu, Zhuding; Wang, Yuhong

    2018-01-01

    The Adélie penguin is a well-known indicator for climate and environmental changes. Exploring how large-scale climate variability affects penguin ecology in the past is essential for understanding the responses of Southern Ocean ecosystems to future global change. Using ornithogenic sediments at Cape Bird, Ross Island, Antarctica, we inferred relative population changes of Adélie penguins in the southern Ross Sea over the past 500 yr, and observed an increase in penguin populations during the Little Ice Age (LIA; 1500-1850 AD). We used cadmium content in ancient penguin guano as a proxy of ocean upwelling and identified a close linkage between penguin dynamics and atmospheric circulation and oceanic conditions. During the cold period of ∼1600-1825 AD, a deepened Amundsen Sea Low (ASL) led to stronger winds, intensified ocean upwelling, enlarged Ross Sea and McMurdo Sound polynyas, and thus higher food abundance and penguin populations. We propose a mechanism linking Antarctic marine ecology and atmospheric/oceanic dynamics which can help explain and predict responses of Antarctic high latitudes ecosystems to climate change.

  12. Iron Fertilization of the Southern Ocean: Regional Simulation and Analysis of C-Sequestration in the Ross Sea

    Energy Technology Data Exchange (ETDEWEB)

    Kevin Arrigo

    2012-03-13

    A modified version of the dynamic 3-dimensional mesoscale Coupled Ice, Atmosphere, and Ocean model (CIAO) of the Ross Sea ecosystem has been used to simulate the impact of environmental perturbations upon primary production and biogenic CO2 uptake. The Ross Sea supports two taxonomically, and spatially distinct phytoplankton populations; the haptophyte Phaeocystis antarctica and diatoms. Nutrient utilization ratios predict that P. antarctica and diatoms will be driven to nitrate and phosphate limitation, respectively. Model and field data have confirmed that the Ross Sea is iron limited with only two-thirds of the macronutrients consumed by the phytoplankton by the end of the growing season. In this study, the CIAO model was improved to simulate a third macronutrient (phosphate), dissolved organic carbon, air-sea gas exchange, and the carbonate system. This enabled us to effectively model pCO2 and subsequently oceanic CO2 uptake via gas exchange, allowing investigations into the affect of alleviating iron limitation on both pCO2 and nutrient drawdown.

  13. From warm to cold: migration of Adélie penguins within Cape Bird, Ross Island

    Science.gov (United States)

    Nie, Yaguang; Sun, Liguang; Liu, Xiaodong; Emslie, Steven D.

    2015-06-01

    Due to their sensitivity to environmental change, penguins in Antarctica are widely used as bio-indicators in paleoclimatic research. On the basis of bio-element assemblages identified in four ornithogenic sediment profiles, we reconstructed the historical penguin population change at Cape Bird, Ross Island, for the past 1600 years. Clear succession of penguin population peaks were observed in different profiles at about 1400 AD, which suggested a high probability of migration within this region. The succession was most obviously marked by a sand layer lasting from 1400 to 1900 AD in one of the analyzed profiles. Multiple physical/chemical parameters indicated this sand layer was not formed in a lacustrine environment, but was marine-derived. Both isostatic subsidence and frequent storms under the colder climatic condition of the Little Ice Age were presumed to have caused the abandonment of the colonies, and we believe the penguins migrated from the coastal area of mid Cape Bird northward and to higher ground as recorded in the other sediment profiles. This migration was an ecological response to global climate change and possible subsequent geological effects in Antarctica.

  14. Antimicrobial Activity of Monoramnholipids Produced by Bacterial Strains Isolated from the Ross Sea (Antarctica

    Directory of Open Access Journals (Sweden)

    Pietro Tedesco

    2016-04-01

    Full Text Available Microorganisms living in extreme environments represent a huge reservoir of novel antimicrobial compounds and possibly of novel chemical families. Antarctica is one of the most extraordinary places on Earth and exhibits many distinctive features. Antarctic microorganisms are well known producers of valuable secondary metabolites. Specifically, several Antarctic strains have been reported to inhibit opportunistic human pathogens strains belonging to Burkholderia cepacia complex (Bcc. Herein, we applied a biodiscovery pipeline for the identification of anti-Bcc compounds. Antarctic sub-sea sediments were collected from the Ross Sea, and used to isolate 25 microorganisms, which were phylogenetically affiliated to three bacterial genera (Psychrobacter, Arthrobacter, and Pseudomonas via sequencing and analysis of 16S rRNA genes. They were then subjected to a primary cell-based screening to determine their bioactivity against Bcc strains. Positive isolates were used to produce crude extracts from microbial spent culture media, to perform the secondary screening. Strain Pseudomonas BNT1 was then selected for bioassay-guided purification employing SPE and HPLC. Finally, LC-MS and NMR structurally resolved the purified bioactive compounds. With this strategy, we achieved the isolation of three rhamnolipids, two of which were new, endowed with high (MIC < 1 μg/mL and unreported antimicrobial activity against Bcc strains.

  15. Behavior of flexural gravity waves on ice shelves: Application to the Ross Ice Shelf

    Science.gov (United States)

    Sergienko, O. V.

    2017-08-01

    Ocean waves continuously impact floating ice shelves and affect their stress regime. Low-frequency, long-period (75-400 s), ocean waves are able to reach ice-shelf cavities from distant sources and excite flexural gravity waves that represent coupled motion in the water of the cavity and the ice covering above. Analytic treatment of simplified geometric configuration and three-dimensional numerical simulations of these flexural gravity waves applied to the Ross Ice Shelf show that propagation and ice-shelf flexural stresses are strongly controlled by the geometry of the system, bathymetry of the ice-shelf cavity, and ice-shelf cavity thickness. The derived dispersion relationships, group and phase velocities of these waves can be used to infer poorly constrained characteristics of ice shelves from field observations. The results of numerical simulations show that the flexural gravity waves propagate as beams. The orientation of these beams is determined by the direction of the open ocean waves incident on the ice-shelf front. The higher frequency ocean waves cause larger flexural stresses, while lower frequency waves can propagate farther away from the ice-shelf front and cause flexural stresses in the vicinity of the grounding line.

  16. Molecular evolutionary dynamics of Ross River virus and implications for vaccine efficacy.

    Science.gov (United States)

    Jones, Anita; Lowry, Kym; Aaskov, John; Holmes, Edward C; Kitchen, Andrew

    2010-01-01

    Ross River virus (RRV) is a mosquito-borne member of the genus Alphavirus that causes epidemic polyarthritis in humans, costing the Australian health system at least US$10 million annually. Recent progress in RRV vaccine development requires accurate assessment of RRV genetic diversity and evolution, particularly as they may affect the utility of future vaccination. In this study, we provide novel RRV genome sequences and investigate the evolutionary dynamics of RRV from time-structured E2 gene datasets. Our analysis indicates that, although RRV evolves at a similar rate to other alphaviruses (mean evolutionary rate of approx. 8x10(-4) nucleotide substitutions per site year(-1)), the relative genetic diversity of RRV has been continuously low through time, possibly as a result of purifying selection imposed by replication in a wide range of natural host and vector species. Together, these findings suggest that vaccination against RRV is unlikely to result in the rapid antigenic evolution that could compromise the future efficacy of current RRV vaccines.

  17. The nepheloid bottom layer and water masses at the shelf break of the western Ross Sea

    Science.gov (United States)

    Capello, Marco; Budillon, Giorgio; Cutroneo, Laura; Tucci, Sergio

    2009-06-01

    In the austral summers of 2000/2001 and 2002/2003 the Italian CLIMA Project carried out two oceanographic cruises along the northwestern margin of the Ross Sea, where the Antarctic Bottom Water forms. Here there is an interaction between the water masses on the sea floor of the outer shelf and slope with a consequent evolution of benthic nepheloid layers and an increase in total particulate matter. We observed three different situations: (a) the presence of triads (bottom structures characterized by a concomitant jump in turbidity, temperature, and salinity data) and high re-suspension phenomena related to the presence of the Circumpolar Deep Water and its mixing with cold, salty shelf waters associated with gravity currents; (b) the absence of triads with high re-suspension, implying that when the gravity currents are no longer active the benthic nepheloid layer may persist until the suspended particles settle to the sea floor, suggesting that the turbidity data can be used to study recent gravity current events; and (c) the absence of turbidity and sediment re-suspension phenomena supports the theory that a steady situation had been re-established and the current interaction no longer occurred or had finished sometime before.

  18. Freshwater mineral nitrogen and essential elements in autotrophs in James Ross Island, West Antarctica

    Directory of Open Access Journals (Sweden)

    Coufalík Pavel

    2016-12-01

    Full Text Available The lakes and watercourses are habitats for various communities of cyanobacteria and algae, which are among the few primary producers in Antarctica. The amount of nutrients in the mineral-poor Antarctic environment is a limiting factor for the growth of freshwater autotrophs in most cases. In this study, the main aim was to assess the availability of mineral nitrogen for microorganisms in cyanobacterial mats in James Ross Island. The nitrate and ammonium ions in water environment were determined as well as the contents of major elements (C, N, P, S, Na, K, Ca, Mg, Al, Fe, Mn in cyanobacterial mats. The molar ratios of C:N, C:P and N:P in mats were in focus. The growth of freshwater autotrophs seems not to be limited by the level of nitrogen, according to the content of available mineral nitrogen in water and the biogeochemical stoichiometry of C:N:P. The source of nutrients in the Ulu Peninsula is not obvious. The nitrogen fixation could enhance the nitrogen content in mats, which was observed in some samples containing the Nostoc sp.

  19. Description of Pseudomonas gregormendelii sp. nov., a Novel Psychrotrophic Bacterium from James Ross Island, Antarctica.

    Science.gov (United States)

    Kosina, Marcel; Švec, Pavel; Černohlávková, Jitka; Barták, Miloš; Snopková, Kateřina; De Vos, Paul; Sedláček, Ivo

    2016-07-01

    During the microbiological research performed within the scope of activities of Czech expeditions based at the Johann Gregor Mendel Station at James Ross Island, Antarctica, two psychrotrophic gram-stain negative non-fluorescent strains CCM 8506T and CCM 8507 from soil were extensively characterized using genotypic and phenotypic methods. Initial characterization using ribotyping with HindIII restriction endonuclease and phenotyping implies that both isolates belong to a single Pseudomonas species. Sequencing of rrs, rpoB, rpoD and glnA genes of strain CCM 8506(T) confirmed affiliation of investigated strains within the genus Pseudomonas. Further investigation using automated ribotyping with EcoRI (RiboPrinter(®) Microbial Characterisation System), whole-cell protein profiling using the Agilent 2100 Bioanalyzer system, extensive biochemical testing and DNA-DNA hybridization experiments confirmed that both investigated strains are members of a single taxon which is clearly separated from all hitherto described Pseudomonas spp. Based on all findings, we describe a novel species Pseudomonas gregormendelii sp. nov. with the type strain CCM 8506(T) (=LMG 28632T).

  20. Tragic Heroines and Wise Women in the Novels of Somerville and Ross

    Directory of Open Access Journals (Sweden)

    Angela Ryan

    2005-03-01

    Full Text Available The novels of Somerville and Ross depict, behind their wit and social satire, a darker tragic vision in which class and gender overdetermine the outcomes often awaiting female characters. Even the heroines of relatively privileged background are vulnerable to change and insecurity. In The Real Charlotte the eponymous heroine’s intelligence and determination fail to guard her against the predicament of the ‘unmarriageable’ woman in the society of the period. Her strength of character, her capacity to foresee and influence events (like the archaic Irish or Greek Wise Woman figure turn to despair and damage to others. In The Silver Fox the outcomes are happier for the two heroines through the agency of another pre-Olympian tragic Wise Woman, herself the victim of tragic fate. In Sarah’s Youth, a notable example of Modernism in Irish writing, the Wise Woman figures are the heroine’s half-sister, and an older mentor-figure. Tragedy, engendered in the conflictual social-family nexus, is averted through the agency of foreknowledge, and a certain relative modernisation of society’s attitudes to (economically  independent women.

  1. The paradox of a long grounding during West Antarctic Ice Sheet retreat in Ross Sea.

    Science.gov (United States)

    Bart, Philip J; Krogmeier, Benjamin J; Bart, Manon P; Tulaczyk, Slawek

    2017-04-28

    Marine geological data show that the West Antarctic Ice Sheet (WAIS) advanced to the eastern Ross Sea shelf edge during the Last Glacial Maximum (LGM) and eventually retreated ~1000 km to the current grounding-line position on the inner shelf. During the early deglacial, the WAIS deposited a voluminous stack of overlapping grounding zone wedges (GZWs) on the outer shelf of the Whales Deep Basin. The large sediment volume of the GZW cluster suggests that the grounding-line position of the paleo-Bindschadler Ice Stream was relatively stationary for a significant time interval. We used an upper bound estimate of paleo-sediment flux to investigate the lower bound duration over which the ice stream would have deposited sediment to account for the GZW volume. Our calculations show that the cluster represents more than three millennia of ice-stream sedimentation. This long duration grounding was probably facilitated by rapid GZW growth. The subsequent punctuated large-distance (~200 km) grounding-line retreat may have been a highly non-linear ice sheet response to relatively continuous external forcing such as gradual climate warming or sea-level rise. These findings indicate that reliable predictions of future WAIS retreat may require incorporation of realistic calculations of sediment erosion, transport and deposition.

  2. What is the Age and Origin of the Spherule Bearing Layer in some Ross Sea Cores?

    Science.gov (United States)

    Yeh, C.; Abbott, D. H.; Anders, M. H.; Breger, D.

    2012-12-01

    L.P. Khyranina (1985) was the first to suggest that there were two structures present on the Antarctic continental shelf beneath the Ross Sea. One was the ~100 km Bowers impact crater candidate. However, there was no solid evidence that proved an extraterrestrial impact produced the Bowers structure. Debate has ensued for decades on whether the Bowers structure was an impact crater. Now we have come close to finding an answer. We used core samples taken near the crater and sieved into four size fractions (>250,>125,>63,>38 μm). Impact ejecta candidates were then picked from cores ELT 32-08, ELT 32-03, ELT 32-43, ELT 32-06, DSDP 273, DSDP 274, and NPB 95-01 39KC and were analyzed for chemical composition and physical features. All but DSDP site 274 contain pure SiO2 glasses that resemble tektites. We also found candidates for flow textured impact glass and shocked quartz. This led us to conclude that the origin of the spherule-bearing layer was from an impact. With the use of dated core NBP 95-01 39KC, we have constrained the age to lie between 7,305±80 BP and 11,150±95 BP (corrected radiocarbon ages) (Cunningham et al., 1999).

  3. The Effect of Chinese Propolis Supplementation on Ross Broiler Performance and Carcass Characteristics

    Directory of Open Access Journals (Sweden)

    Usama T. Mahmoud

    2013-10-01

    Full Text Available The experiment was conducted to investigate the effects of Ether Extract of Propolis (EEP on Ross (308 broiler performance and carcass characteristics. This experiment was carried out in a completely randomized design with 5 treatments (different levels of propolis including 0, 100, 250, 500 and 750 mg/kg diet for 6 weeks. The mean weight gain, feed consumption and feed conversion ratio were recorded weekly. In addition At 42 days old the total body weight, total body weight gain, carcass and some internal organs relative weights were recorded. The results clarified that, the weight gain was significantly reduced in the 4th and 6th week (P0.05 reduced for propolis fed birds in comparison to those fed control diet, Furthermore, inclusion of 100, 250, 500 and 750 mg/kg diet Propolis significantly reduced body weight at 42 days old and total body weight gain in comparison to control diet (P < 0.05. Under the condition of this experiment, prolonged use of propolis had adverse effect on performance of broilers. Also, all doses of propolis had non-significant negative effect on liver, heart, gizzard and carcass relative weight. In conclusion, EEP has no beneficial effect on performance and Carcass characteristics of Broilers.

  4. Active and Passive Microwave Determination of the Circulation and Characteristics of Weddell and Ross Sea Ice

    Science.gov (United States)

    Drinkwater, Mark R.; Liu, Xiang

    2000-01-01

    A combination of satellite microwave data sets are used in conjunction with ECMWF (Medium Range Weather Forecasts) and NCEP (National Center for Environment Prediction) meteorological analysis fields to investigate seasonal variability in the circulation and sea-ice dynamics of the Weddell and Ross Seas. Results of sea-ice tracking using SSM/I (Special Sensor Microwave Imager), Scatterometer and SAR images are combined with in-situ data derived from Argos buoys and GPS drifters to validate observed drift patterns. Seasonal 3-month climatologies of ice motion and drift speed variance illustrate the response of the sea-ice system to seasonal forcing. A melt-detection algorithm is used to track the onset of seasonal melt, and to determine the extent and duration of atmospherically-led surface melting during austral summer. Results show that wind-driven drift regulates the seasonal distribution and characteristics of sea-ice and the intensity of the cyclonic Gyre circulation in these two regions.

  5. Observing the seasonal cycle of the upper ocean in the Ross Sea, Antarctica, with autonomous profiling floats

    Science.gov (United States)

    Porter, D. F.; Springer, S. R.; Padman, L.; Fricker, H. A.; Bell, R. E.

    2017-12-01

    The upper layers of the Southern Ocean where it meets the Antarctic ice sheet undergoes a large seasonal cycle controlled by surface radiation and by freshwater fluxes, both of which are strongly influenced by sea ice. In regions where seasonal sea ice and icebergs limit use of ice-tethered profilers and conventional moorings, autonomous profiling floats can sample the upper ocean. The deployment of seven Apex floats (by sea) and six ALAMO floats (by air) provides unique upper ocean hydrographic data in the Ross Sea close to the Ross Ice Shelf front. A novel choice of mission parameters - setting parking depth deeper than the seabed - limits their drift, allowing us to deploy the floats close to the ice shelf front, while sea ice avoidance algorithms allow the floats to to sample through winter under sea ice. Hydrographic profiles show the detailed development of the seasonal mixed layer close to the Ross front, and interannual variability of the seasonal mixed layer and deeper water masses on the central Ross Sea continental shelf. After the sea ice breakup in spring, a warm and fresh surface mixed layer develops, further warming and deepening throughout the summer. The mixed layer deepens, with maximum temperatures exceeding 0ºC in mid-February. By March, the surface energy budget becomes negative and sea ice begins to form, creating a cold, saline and dense surface layer. Once these processes overcome the stable summer stratification, convection erodes the surface mixed layer, mixing some heat downwards to deeper layers. There is considerable interannual variability in the evolution and strength of the surface mixed layer: summers with shorter ice-free periods result in a cooler and shallower surface mixed layer, which accumulates less heat than the summers with longer ice-free periods. Early ice breakup occurred in all floats in 2016/17 summer, enhancing the absorbed solar flux leading to a warmer surface mixed layer. Together, these unique measurements from

  6. Mid-term Outcome of 100 Consecutive Ross Procedures: Excellent Survival, But Yet to Be a Cure.

    Science.gov (United States)

    Zimmermann, Corina; Attenhofer Jost, Christine; Prêtre, René; Mueller, Christoph; Greutmann, Matthias; Seifert, Burkhardt; Valsangiacomo Büchel, Emanuela; Kretschmar, Oliver; Dave, Hitendu Hasmukhlal; Weber, Roland

    2018-03-01

    The Ross procedure offers excellent short-term outcome but the long-term durability is under debate. Reinterventions and follow-up of 100 consecutive patients undergoing Ross Procedure at our centre (1993-2011) were analysed. Follow-up was available for 96 patients (97%) with a median duration of 5.3 (0.1-17.1) years. Median age of the patient cohort was 15.2 (0.04-58.4) years with 76 males. 93% had underlying congenital aortic stenosis. Root replacement technique was applied in all. The most common valved conduits used for reconstruction of the right ventricular outflow tract were homografts (66 patients) and bovine jugular vein (Contegra R ) graft (31 patients). Additional procedures included Ross-Konno procedure (14%), resection of subaortic stenosis/myectomy (11%) and reduction plasty of the ascending aorta (25%). One patient died within the first 30 days (1%). Late deaths occurred in 4 patients (4%) 0.5-4.5 years postoperatively: causes included pulmonary hypertension due to endocardial fibroelastosis (2), subarachnoid haemorrhage (1) and sudden cardiac death (1). Five-year survival was 93.6 (95% CI 88.1-99.1)%. Moderate or severe aortic (autograft) regurgitation needing reoperation occurred in 8 patients with a 5-year freedom from autograft reoperation of 98.5 (95.6-100)%. Five-year freedom from reintervention (surgery or catheter based) on the right ventricular outflow tract conduit was 91.5 (85.5-96.5)%. Univariate predictors of this reinterventions were smaller graft size (p = 0.03) and use of a Contegra R graft (p = 0.04). Ross procedure can be performed with low mortality and good survival in the long term. Most of the reinterventions are related to the neo-right ventricular outflow tract and may be partly attributed to the lack of growth. While the Ross Procedure remains an invaluable option for aortic valve disease in children, new solutions for the neo-pulmonary valve as well as for the less often occurring problems on the autograft are

  7. Early and mid-term results of autograft rescue by Ross reversal: A one-valve disease need not become a two-valve disease.

    Science.gov (United States)

    Hussain, Syed T; Majdalany, David S; Dunn, Aaron; Stewart, Robert D; Najm, Hani K; Svensson, Lars G; Houghtaling, Penny L; Blackstone, Eugene H; Pettersson, Gösta B

    2018-02-01

    Risk of reoperation and loss of a second native valve are major drawbacks of the Ross operation. Rather than discarding the failed autograft, it can be placed back into the native pulmonary position by "Ross reversal." We review our early and mid-term results with this operation. From 2006 to 2017, 39 patients underwent reoperation for autograft dysfunction. The autograft was successfully rescued in 35 patients: by Ross reversal in 30, David procedure in 4, and autograft repair in 1. Medical records were reviewed for patient characteristics (mean age was 46 ± 13 years, range 18-67 years, and 23 were male), previous operations, indications for reoperation, hospital outcomes, and echocardiographic findings for the 30 patients undergoing successful Ross reversal. Follow-up was 4.1 ± 3.5 years (range 7 months-11 years). Median interval between the original Ross procedure and Ross reversal was 12 years (range 5-19 years). Eight patients also had absolute indications for replacement of the pulmonary allograft. There was no operative mortality. One patient required reoperation for bleeding. Another had an abdominal aorta injury from use of an endoballoon clamp. There was no other major postoperative morbidity, and median postoperative hospital stay was 7.2 days (range 4-41 days). No patient required reoperation during follow-up. Twenty-four patients had acceptable pulmonary valve function, and 6 had clinically well-tolerated moderate or severe pulmonary regurgitation. Ross reversal can be performed with low morbidity and acceptable pulmonary valve function, reducing patient risk of losing 2 native valves when the autograft fails in the aortic position. Copyright © 2017 The American Association for Thoracic Surgery. Published by Elsevier Inc. All rights reserved.

  8. Modelling of active layer thickness evolution on James Ross Island in 2006-2015

    Science.gov (United States)

    Hrbáček, Filip; Uxa, Tomáš

    2017-04-01

    Antarctic Peninsula region has been considered as one of the most rapidly warming areas on the Earth. However, the recent studies (Turner et al., 2016; Oliva et al., 2017) showed that significant air temperature cooling began around 2000 and has continued until present days. The climate cooling led to reduction of active layer thickness in several parts of Antarctic Peninsula region during decade 2006-2015, but the information about spatiotemporal variability of active layer thickness across the region remains largely incoherent due to lack of active layer temperature data from deeper profiles. Valuable insights into active layer thickness evolution in Antarctic Peninsula region can be, however, provided by thermal modelling techniques. These have been widely used to study the active layer dynamics in different regions of Arctic since 1990s. By contrast, they have been employed much less in Antarctica. In this study, we present our first results from two equilibrium models, the Stefan and Kudryavtsev equations, that were applied to calculate the annual active layer thickness based on ground temperature data from depth of 5 cm on one site on James Ross Island, Eastern Antarctic Peninsula, in period 2006/07 to 2014/15. Study site (Abernethy Flats) is located in the central part of the major ice-free area of James Ross Island called Ulu Peninsula. Monitoring of air temperature 2 m above ground surface and ground temperature in 50 cm profile began on January 2006. The profile was extended under the permafrost table down to 75 cm in February 2012, which allowed precise determination of active layer thickness, defined as a depth of 0°C isotherm, in period 2012 to 2015. The active layer thickness in the entire observation period was reconstructed using the Stefan and Kudryavtsev models, which were driven by ground temperature data from depth of 5 cm and physical parameters of the ground obtained by laboratory analyses (moisture content and bulk density) and calculations

  9. Radionuclides in ornithogenic sediments as evidence for recent warming in the Ross Sea region, Antarctica

    Energy Technology Data Exchange (ETDEWEB)

    Nie, Yaguang [Institute of Polar Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026 (China); Key Laboratory of Ion Beam Bioengineering, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Key Laboratory of Environmental Toxicology and Pollution Control Technology of Anhui Province, Hefei, Anhui 230031 (China); Xu, Liqiang [School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, Anhui 230009 (China); Liu, Xiaodong, E-mail: ycx@ustc.edu.cn [Institute of Polar Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026 (China); Emslie, Steven D. [Department of Biology and Marine Biology, University of North Carolina Wilmington, 601 S. College Road, Wilmington, NC 28403 (United States)

    2016-07-01

    Radionuclides including {sup 210}Pb, {sup 226}Ra and {sup 137}Cs were analyzed in eight ornithogenic sediment profiles from McMurdo Sound, Ross Sea region, East Antarctica. Equilibration between {sup 210}Pb and {sup 226}Ra were reached in all eight profiles, enabling the determination of chronology within the past two centuries through the Constant Rate of Supply (CRS) model. Calculated fluxes of both {sup 210}Pb and {sup 137}Cs varied drastically among four of the profiles (MB4, MB6, CC and CL2), probably due to differences in their sedimentary environments. In addition, we found the flux data exhibiting a clear decreasing gradient in accordance with their average deposition rate, which was in turn related to the specific location of the profiles. We believe this phenomenon may correspond to global warming of the last century, since warming-induced surface runoff would bring more inflow water and detritus to the coring sites, thus enhancing the difference among the profiles. To verify this hypothesis, the deposition rate against age of the sediments was calculated based on their determined chronology, which showed ascending trends in all four profiles. The significant increase in deposition rates over the last century is probably attributable to recent warming, implying a potential utilization of radionuclides as environmental indicators in this region. - Highlights: • {sup 210}Pb, {sup 226}Ra and {sup 137}Cs were measured in ornithogenic sediment profiles. • Chronology within 200 years was determined through Constant Rate of Supply model. • Calculated nuclide fluxes decreased with average deposition rate and locations. • Deposition rate over time indicated warming which caused the flux gradient.

  10. Cenozoic Tectonic Characteristics in the Adare Basin, West Ross Sea: Evidence From Seismic Profiles

    Science.gov (United States)

    Zhang, Q.; Gao, J.; Ding, W.

    2017-12-01

    Based on the geophysical data obtained from the Adare Basin and its adjacent areas, West Ross Sea, the authors employed the frequency wave-number filtering technique to recover the newly processed dataset with high signal noise ratio and complete seismic event which highly contributes to reveal more detailed deep-seated geological structures than previously thought. The structural features and magmatism of the study area in Cenozoic were classified and analyzed. Combined with glaciation, the associated sedimentary facies were summarized systematically. The authors' analysis revealed that, at 16 Ma, under the influence of the thermal effect caused by residual magmatism and asymmetric spreading of Adare Basin in the initial period, surrounding areas of two flanks of the Adare trough were characterized by uplift folds and tilted uplift zone, respectively. The small-scale uplift fold zone was characterized by nearly upright faults and folds and was located in the southern part of the eastern flank, whereas the tilted uplift zone dominated in the corresponding district of western flank that reached the continental margin. By utilizing the contact relationship between igneous rocks and surrounding rocks, igneous rocks can be divided into two periods: early-stage and late Cenozoic igneous rocks. The early-stage rocks are generally located dispersedly in the tilted uplift zone and the age is poorly known. It is suggested that they were related to the residual magmatism. On the other hand, the spatial distribution of Late Cenozoic igneous rocks, formed not earlier 5.5 Ma, was extensive and scattered, almost covering the whole study area, which indicates that they might be unrelated to the rifting in space and time, instead they were affected by decompression melting of the mantle because of the large-scale deglaciation since Pliocene.

  11. The influence of the Amundsen Sea Low on the winds in the Ross Sea and surroundings: Insights from a synoptic climatology

    Science.gov (United States)

    Coggins, Jack H. J.; McDonald, Adrian J.

    2015-03-01

    The Amundsen Sea Low (ASL) is an area of climatologically low atmospheric pressure situated over the Southern Ocean. The depth and location of this feature have significant effects on winds, temperature, moisture transport, and sea ice in its vicinity. In this article, we quantify the modulating effect of this feature on winds over the Ross Sea and Ross Ice Shelf. We examine composites of surface winds sampled according to extrema in ASL depth, longitude, and latitude. We employ the output of a previously developed synoptic climatology to identify the explanatory synoptic-scale forcings. In autumn, winter, and spring (AWS) we find that the impact of the depth of the ASL is smaller than that of its location. The ASL moves eastward when it is deep, thereby reducing its influence on Ross Sea winds. When the ASL is northward, we find strongly enhanced southerly flows over the Ross Sea and Ice Shelf, forced by greater cyclonic activity in the north of the Ross Sea. In summer, we find increased cyclonic flow coinciding with a deeper ASL, despite the ASL being located in the Bellingshausen Sea at this time. The responses to the ASL longitude and latitude are profoundly different to those in AWS, suggesting that relationships are strongly dependent on the varying seasonal location of the low. We examine two metrics of the ASL depth and identify that the absolute mean sea level pressure (MSLP) has a more widespread response than that of the relative MSLP.

  12. Ice-proximal Marine Sedimentation in the Ross Sea during LGM: Ice-sheet and Ocean Interactions

    Science.gov (United States)

    Turetta, C.; Aghib, F. S.; Ferretti, P.; Barbante, C.

    2016-12-01

    We present preliminary results from a multi-proxy study of different cores from the Ross Sea, Antarctica. Thirty cores have been sampled at the Antarctic Marine Geology Research Facility (AMRF), Florida State University in order to discriminate different source areas and to reconstruct the depositional setting and related climate implications in a peculiar ice-proximal marine setting. Sediment characterizations, trace elements (TE) and rare earth elements (REEs) compositional analysis and evaluation about their source areas have been performed on sediment cores collected widespread in the Ross Sea area. Analysis of 72 samples from thirty cores was performed to determine total concentration of Li, Be, Mg, Al, K, Ca, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Rb, Sr, Ag, Cd, Cs, Ba, Tl, Pb, Bi, Th, U, Y and REEs. This extensive geochemical characterization of cores from several sites in the Ross Sea, will allow to better define the sedimentary processes, to understand the evolution of the ice-proximal marine setting, to evaluate areas with different geochemical features related to different provenances. In particular REEs allow us to discriminate different source areas and to better define the ocean input in the sediment composition. Moreover, 17 sediment cores from Coulman High area collected along two transects were characterized in order to constrain sediment bulk composition, biogenic vs non-biogenic components and the related depositional setting. Sediments from the two transects show a completely different bulk composition, those from the Northern transect mainly consist of fine-grained sediments containing well-preserved biogenic carbonate remains. Sediments from the Southern cores mainly consist of dark greenish diatomaceous sandy mud containing abundant diatoms in fragments. Sedimentation along the two transects seems to reflect the extent of the ice sheets in an ice-proximal marine setting. REEs compositional analyses have confirmed different source regions, a

  13. Possible Abrupt Changes in Ocean Circulation and Climate Due to the Changing Behavior of Ross Ice Streams, West Antarctica

    Science.gov (United States)

    Tulaczyk, S.; Hunke, E. C.; Joughin, I.; Bougamont, M. H.; Vogel, S. W.

    2001-12-01

    One of the most important recent results of glaciological research in West Antarctica is the discovery that ice discharge from Ross ice streams may have been decreasing for at least as long as ~150 years. This decrease may be driven by changes in the ice-stream basal thermal regime (Kamb 2001). The magnitude of the decrease amounted to ~1 cm less of global sea level rise in the last century than we would have otherwise experienced. Changes in discharge from Ross ice streams may also have important implications for near future stability of the Ross Ice Shelf (RIS), which is nourished by these ice streams. If ice-stream discharge will continue its recent decrease, RIS will thin and may start to retreat or break up. Additional impetus for retreat or break up of the RIS may come from future climatic warming that appears to have helped to destabilize some smaller ice shelves along the Antarctic Penninsula. Break up of RIS alone would expose ~0.5 mln km2 of new sea surface area and could have significant implications for exchange of energy and water between the ocean and the atmosphere-cryosphere system in the region. Moreover, brine exclusion during sea-ice formation could turn this newly exposed polar continental shelf into a key source of bottom ocean water. This strengthened Antarctic Bottom Water formation could outcompete the North Atlantic source of Bottom Water and switch the global ocean into a new mode of thermohaline circulation, with global climatic implications (Denton, 2000). At the present time, we begin to quantify the effects of removing West Antarctic ice shelves on global thermohaline circulation using a coupled, global sea-ice-ocean circulation model developed at LANL. Qualitatively, however, there is a strong potential for significant impact of the recent changes in flow rates of the West Antarctic ice streams on regional and global atmospheric and ocean circulation.

  14. The seroprevalence and factors associated with Ross river virus infection in western grey kangaroos (Macropus fuliginosus) in Western Australia.

    Science.gov (United States)

    Potter, Abbey; Johansen, Cheryl A; Fenwick, Stan; Reid, Simon A; Lindsay, Michael D A

    2014-10-01

    A serosurvey was undertaken in 15 locations in the midwest to southwest of Western Australia (WA) to investigate the seroprevalence of Ross River virus (RRV) neutralizing antibodies and factors associated with infection in western grey kangaroos (Macropus fuliginosus). The estimated seroprevalence in 2632 kangaroo samples, using a serum neutralization test, was 43.9% (95% CI 42.0, 45.8). Location was significantly associated with seroprevalence (pkangaroos was significantly higher than in subadult kangaroos (pkangaroos (p>0.05). The results of this study indicate that kangaroos in WA are regularly infected with RRV and may be involved in the maintenance and transmission of RRV.

  15. The evolution of competition in banking in a transition economy: an application of the Panzar-Rosse model to Armenia

    Directory of Open Access Journals (Sweden)

    Armenuhi Mkrtchyan

    2005-06-01

    Full Text Available The structure of the banking industry typically undergoes fundamental changes during the transition to a market economy. This research employs the method suggested by Panzar and Rosse (1987 to evaluate the empirical evidence on the evolution of competitive structure in the Armenian banking industry during its recent transition and on the possible forces—market power or efficiency/contestability—that underlie that evolution. The results point to monopolistic competition.The reduction of bank numbers and the simultaneous increase in concentration is accompanied by a decline in competition intensity, which supports the market-power hypothesis

  16. Innovazione e sperimentazione. Alcune considerazioni sui “Pionieri” e la prima ceramografia ateniese a figure rosse

    OpenAIRE

    Elisabetta Pala

    2014-01-01

    L’articolo è incentrato su un gruppo di ceramografi ateniesi a figure rosse, attivi tra il 520 e gli inizi del V sec. a.C., denominati “Pionieri” per l’approccio del tutto nuovo alla pittura vascolare, basato principalmente su un’attenta osservazione della realtà e su un approfondito studio dell’anatomia umana. Saranno discussi gli aspetti più significativi della loro produzione, quali la consapevolezza di sé e del proprio ruolo e lo spirito di rivalità tra i diversi membri del gruppo, che li...

  17. Understanding Ice Shelf Basal Melting Using Convergent ICEPOD Data Sets: ROSETTA-Ice Study of Ross Ice Shelf

    Science.gov (United States)

    Bell, R. E.; Frearson, N.; Tinto, K. J.; Das, I.; Fricker, H. A.; Siddoway, C. S.; Padman, L.

    2017-12-01

    The future stability of the ice shelves surrounding Antarctica will be susceptible to increases in both surface and basal melt as the atmosphere and ocean warm. The ROSETTA-Ice program is targeted at using the ICEPOD airborne technology to produce new constraints on Ross Ice Shelf, the underlying ocean, bathymetry, and geologic setting, using radar sounding, gravimetry and laser altimetry. This convergent approach to studying the ice-shelf and basal processes enables us to develop an understanding of the fundamental controls on ice-shelf evolution. This work leverages the stratigraphy of the ice shelf, which is detected as individual reflectors by the shallow-ice radar and is often associated with surface scour, form close to the grounding line or pinning points on the ice shelf. Surface accumulation on the ice shelf buries these reflectors as the ice flows towards the calving front. This distinctive stratigraphy can be traced across the ice shelf for the major East Antarctic outlet glaciers and West Antarctic ice streams. Changes in the ice thickness below these reflectors are a result of strain and basal melting and freezing. Correcting the estimated thickness changes for strain using RIGGS strain measurements, we can develop decadal-resolution flowline distributions of basal melt. Close to East Antarctica elevated melt-rates (>1 m/yr) are found 60-100 km from the calving front. On the West Antarctic side high melt rates primarily develop within 10 km of the calving front. The East Antarctic side of Ross Ice Shelf is dominated by melt driven by saline water masses that develop in Ross Sea polynyas, while the melting on the West Antarctic side next to Hayes Bank is associated with modified Continental Deep Water transported along the continental shelf. The two sides of Ross Ice Shelf experience differing basal melt in part due to the duality in the underlying geologic structure: the East Antarctic side consists of relatively dense crust, with low amplitude

  18. Trends in the breeding population of Adelie penguins in the Ross Sea, 1981-2012: a coincidence of climate and resource extraction effects.

    Directory of Open Access Journals (Sweden)

    Phil O'B Lyver

    Full Text Available Measurements of the size of Adélie penguin (Pygoscelis adeliae colonies of the southern Ross Sea are among the longest biologic time series in the Antarctic. We present an assessment of recent annual variation and trends in abundance and growth rates of these colonies, adding to the published record not updated for more than two decades. High angle oblique aerial photographic surveys of colonies were acquired and penguins counted for the breeding seasons 1981-2012. In the last four years the numbers of Adélie penguins in the Ross and Beaufort Island colonies (southern Ross Sea metapopulation reached their highest levels since aerial counts began in 1981. Results indicated that 855,625 pairs of Adélie penguins established breeding territories in the western Ross Sea, with just over a quarter (28% of those in the southern portion, constituting a semi-isolated metapopulation (three colonies on Ross Island, one on nearby Beaufort Island. The southern population had a negative per capita growth rate of -0.019 during 1981-2000, followed by a positive per capita growth rate of 0.067 for 2001-2012. Colony growth rates for this metapopulation showed striking synchrony through time, indicating that large-scale factors influenced their annual growth. In contrast to the increased colony sizes in the southern population, the patterns of change among colonies of the northern Ross Sea were difficult to characterize. Trends were similar to southern colonies until the mid-1990s, after which the signal was lost owing to significantly reduced frequency of surveys. Both climate factors and recovery of whale populations likely played roles in the trends among southern colonies until 2000, after which depletion of another trophic competitor, the Antarctic toothfish (Dissostichus mawsoni, may explain the sharp increasing trend evident since then.

  19. Outcomes and Short-Term Follow-Up in Complex Ross Operations in Pediatric Patients Undergoing Damus-Kaye-Stansel Takedown.

    Science.gov (United States)

    Baird, Christopher W; Zurakowski, David; Bueno, Alejandra; Borisuk, Michele J; Raju, Vijayakumar; Mokashi, Suyog A; Emani, Sitaram; Marx, Gerald R; Del Nido, Pedro J

    2016-01-01

    Review echocardiography and outcomes before and after Ross procedures, including patients undergoing biventricular conversion with Damus-Kaye-Stansel (DKS) takedown. A retrospective review was performed on 62 patients undergoing simple (control group) and complex Ross procedures, including 12 patients who underwent biventricular conversion with Ross operation and DKS takedown (complex). Echocardiography was reviewed preoperatively and at discharge and late follow-up. Kaplan-Meier estimates of patient survival and freedom from reintervention were obtained. In all, 62 patients had a median age of 4.5 years (interquartile range [IQR]: 1-12.5), weight of 16.4kg (IQR: 8-41), and follow-up of 3.8 years (IQR: 1.3-6). The complex DKS takedown group had 2 deaths, no neoaortic valve or root reinterventions, and 3 right ventricular outflow tract (VOT) reinterventions. There were no differences from the control group in left VOT or right VOT reinterventions. Neither group showed differences between pre- and late follow-up aortic root and ascending aorta dimensions, and no correlations were found among preoperative pulmonary valve (PV) size, late aortic regurgitation (AR), aortic root, or ascending aortic Z-scores. Aortic valve size increased from discharge to late follow-up for both groups (P ≤ .05); 90% of patients at late follow-up had mild or less AR with similar distributions in severity between complex and control groups. Severity of late AR showed no correlation with preoperative PV size and is independent of it. The Ross procedure has good short-term results in simple and complex patients and should be considered in those undergoing Ross operation with biventricular conversion and DKS takedown. Moreover, native PV size should not be a contraindication for Ross procedure. Copyright © 2016 Elsevier Inc. All rights reserved.

  20. Potential Investigation of Linking PROSAIL with the Ross-Li BRDF Model for Vegetation Characterization

    Directory of Open Access Journals (Sweden)

    Xiaoning Zhang

    2018-03-01

    Full Text Available Methods that link different models for investigating the retrieval of canopy biophysical/structural variables have been substantially adopted in the remote sensing community. To retrieve global biophysical parameters from multiangle data, the kernel-driven bidirectional reflectance distribution function (BRDF model has been widely applied to satellite multiangle observations to model (interpolate/extrapolate the bidirectional reflectance factor (BRF in an arbitrary direction of viewing and solar geometries. Such modeled BRFs, as an essential information source, are then input into an inversion procedure that is devised through a large number of simulation analyses from some widely used physical models that can generalize such an inversion relationship between the BRFs (or their simple algebraic composite and the biophysical/structural parameter. Therefore, evaluation of such a link between physical models and kernel-driven models contributes to the development of such inversion procedures to accurately retrieve vegetation properties, particularly based on the operational global BRDF parameters derived from satellite multiangle observations (e.g., MODIS. In this study, the main objective is to investigate the potential for linking a popular physical model (PROSAIL with the widely used kernel-driven Ross-Li models. To do this, the BRFs and albedo are generated by the physical PROSAIL in a forward model, and then the simulated BRFs are input into the kernel-driven BRDF model for retrieval of the BRFs and albedo in the same viewing and solar geometries. To further strengthen such an investigation, a variety of field-measured multiangle reflectances have also been used to investigate the potential for linking these two models. For simulated BRFs generated by the PROSAIL model at 659 and 865 nm, the two models are generally comparable to each other, and the resultant root mean square errors (RMSEs are 0.0092 and 0.0355, respectively, although some

  1. The effect of bee pollen as dietary supplement on meat chemical composition for broiler Ross 308

    Directory of Open Access Journals (Sweden)

    Peter Haščík

    2013-01-01

    Full Text Available The present experiment was aimed to study the effect of bee pollen on the meat chemical composition of broiler’s Ross 308 breast and thigh muscles. In the experimental groups were added bee pollen in an amount (group E1 – 2 500 mg.kg−1, group E2 – 3 500 mg.kg−1 and E3 – 4 500 mg.kg−1 to the feed mixtures for 42 days. At the end of the study the water content was higher in experimental groups than the control group and on breasts there were a significant difference (P ≤ 0.05 between control groups and experimental groups (E1, E2 and E3 also there was a significant difference (P ≤ 0.05 between the experimental E3 and experimental E1, E2 groups. In protein content, the control group was higher than experimental groups and there no significant differences (P ≥ 0.05 among the groups. In fat content, the control group (2.04%, 13.2% was higher than experimental groups E1 group (1.59%, except thigh 14.11%, E2 group (1.70%, 13.00% and E3 group (1.51%, 10.96% and on breast there were significant differences (P ≤ 0.05 between control group and experimental groups E1, E3 and on thigh there were significant differences (P ≤ 0.05 between experimental E3 and experimental E1, E2 groups. In energy value (kJ.100 g−1 of the breast and thigh muscles in control was higher than experimental groups and on the breasts there were a significant differences (P ≤ 0.05 between control group and experimental groups (E1, E3 and on the thigh there were significant differences (P ≤ 0.05 between experimental E1 and experimental E3 groups. From the study we concluded that the bee pollen has a positive effect of the breast’s meat chemical composition of broiler, which led to increase the water contact and reduce the fat content and energy value, but he had a normal effect on thigh, also bee pollen has normal effect on the protein content of the breast and thigh muscles.

  2. Extended Late-Cretaceous Magnetostratigraphy of the James Ross Basin Island, Antarctica

    Science.gov (United States)

    Chaffee, T. M.; Mitchell, R.; Slotznick, S. P.; Buz, J.; Biasi, J.; O'Rourke, J.; Sousa, F.; Flannery, D.; Fu, R. R.; Kirschvink, J. L.

    2017-12-01

    Sediments in the James Ross Island Basin (JRB) in the West Antarctic Peninsula contain one of the world's highest-resolution records of the late Cretaceous period, including the end-Cretaceous (K-Pg) mass extinction event. However, the geological record of this region has been poorly studied, limited in the past only to the relative dating of local fossils. Recent studies of this region have provided only low-resolution data, with gaps of greater than 0.5 million years between samples where no data was collected. A high-resolution magnetostratigraphic sampling and analysis is necessary in order to accurately determine the age of the JRB sediments and connect them to the global time record. During the 2016 field season in Antarctica, our team collected nearly 1,300 sample cores from JRB sediments using a diamond-tipped, gasoline powered coring drill. Drill sites were densely clustered across bedding in order to obtain a high-resolution record of magnetostratigraphy, permitting the recognition of distinct, high-resolution units of time (<50 thousand years) present in local stratigraphy Our current results come from thermal demagnetization of the characteristic remanance (ChRM) of a group of over 300 of these samples from the Brandy Bay area which constrain the end of the Cretaceous Superchron (C34N) and the C34N/C34R reversal and allow us to investigate the presence of geomagnetic excursions before the end of superchron. These samples span in age from the top of C34N to the mid-Maastrichtian. We also test the Late Cretaceous True Polar Wander (TPW) hypothesis. Current theories on the global extent of TPW are not substantiated by any data sets that confirm the presence and similarity of the effect across multiple continents. Evidence of a rapid TPW oscillation in Antarctica can be correlated with other samples from the North American continent currently under study to provide evidence for the theory of global, short-timescale TPW.

  3. Protein Level the Influence and the Period of Combined Feed Administration in Ross 308 Hybrid in Serbia

    Directory of Open Access Journals (Sweden)

    Daniel Omoran

    2015-10-01

    Full Text Available There are various researches where during growth period of broilers are used 2 or 4 combined feed (CF recipes, with different nutritional characteristics, which can cover the chickens need, and which can also satisfy the technical-economical condition. The purpose of this work was to assess the possibility to simplify the way of feeding the chickens Ross 308 hybrid, by reducing the number of forage recipes from 4 to 3, and by administering combined feed with a protein level of 4% higher during the so-called growing period (11-33 days. In meat chickens, Ross 308 hybrid, for which the growing technology was applied with 4 types of CF: starter, I grower, II grower and finisher, at the age of 43 days, there was obtained an average body weight of 2557.81 g, an intake of 4790 g/chicken, a feed conversion ratio of 1.90, the feed costs to achieve 1 kg live weight being of 0.685 euros; in chickens fodder-fed with 3 CF structures, the body weight was of about 5.6% higher, a close feed intake, and the same feed conversion ratio, and the foraging costs related to kg live weight were of 0.15% higher. The conclusion is the simplification of broiler feeding technology reducing from 4 and 3 structures of combined feed by administering a CF with up 4p% more protein, during the so-called growing period.

  4. BROILER´S ROSS 308 MEAT CHEMICAL COMPOSITION AFTER ADDITION OF BEE POLLEN AS A SUPPLEMENT IN THEIR FEED MIXTURES

    Directory of Open Access Journals (Sweden)

    Peter Haščík

    2014-02-01

    Full Text Available The goal of this study was to evaluate the meat chemical composition of broiler chicken Ross 308. In the experiment, totally 200 one-day-old chicks were divided into 4 groups (n=50 for 42 days. Bee pollen was added to feed mixtures in doses 0; 2,500; 3,500 and 4,500 mg.kg-1. The findings found the moisture content of breast and thigh muscles were higher in the experimental groups compared to the control except E3 in thigh muscle, but in protein content were higher in the control group. On the other hand the fat content and energy value in the control group were higher comparison to experimental groups except E1. There are no significant differences (P ≥ 0.05 among the experimental groups. From the current study they conclude the bee pollen has a positive effect on the broiler Ross 308 chemical composition because the increase of moisture content and decrease the fat content which may be acceptable for several special human diets.

  5. Thermohaline circulation below the Ross Ice Shelf - A consequence of tidally induced vertical mixing and basal melting

    Science.gov (United States)

    Macayeal, D. R.

    1984-01-01

    The warmest water below parts of the Ross Ice Shelf resides in the lowest portion of the water column because of its high salinity. Vertical mixing caused by tidal stirring can thus induce ablation by lifting the warm but dense water into contact with the ice shelf. A numerical tidal simulation indicates that vertically well-mixed conditions predominate in the southeastern part of the sub-ice shelf cavity, where the water column thickness is small. Basal melting in this region is expected to be between 0.05 and 0.5 m/yr and will drive a thermohaline circulation having the following characteristics: high salinity shelf water (at - 1.8 C), formed by winter sea ice production in the open Ross Sea, flows along the seabed toward the tidal mixing fronts below the ice shelf; and meltwater (at -2.2 C), produced in the well-mixed region, flows out of the sub-ice shelf cavity along the ice shelf bottom. Sensitivity of this ablation process to climatic change is expected to be small because high salinity shelf water is constrained to have the sea surface freezing temperature.

  6. Lithology and chronology of ice-sheet fluctuations (magnetic susceptibility of cores from the western Ross Sea)

    Science.gov (United States)

    Jennings, Anne E.

    1993-01-01

    The goals of the marine geology part of WAIS include reconstructing the chronology and areal extent of ice-sheet fluctuations and understanding the climatic and oceanographic influences on ice-sheet history. As an initial step toward attaining these goals, down-core volume magnetic susceptibility (MS) logs of piston cores from three N-S transects in the western Ross Sea are compared. The core transects are within separate petrographic provinces based on analyses of till composition. The provinces are thought to reflect the previous locations of ice streams on the shelf during the last glaciation. Magnetic susceptibility is a function of magnetic mineral composition, sediment texture, and sediment density. It is applied in the western Ross Sea for two purposes: (1) to determine whether MS data differentiates the three transects (i.e., flow lines), and thus can be used to make paleodrainage reconstructions of the late Wisconsinan ice sheet; and (2) to determine whether the MS data can aid in distinguishing basal till diamictons from diamictons of glacial-marine origin and thus, aid paleoenvironmental interpretations. A comparison of the combined data of cores in each transect is presented.

  7. The Ross classification for heart failure in children after 25 years: a review and an age-stratified revision.

    Science.gov (United States)

    Ross, Robert D

    2012-12-01

    Accurate grading of the presence and severity of heart failure (HF) signs and symptoms in infants and children remains challenging. It has been 25 years since the Ross classification was first used for this purpose. Since then, several modifications of the system have been used and others proposed. New evidence has shown that in addition to signs and symptoms, data from echocardiography, exercise testing, and biomarkers such as N-terminal pro-brain natriuretic peptide (NT-proBNP) all are useful in stratifying outcomes for children with HF. It also is apparent that grading of signs and symptoms in children is dependent on age because infants manifest HF differently than toddlers and older children. This review culminates in a proposed new age-based Ross classification for HF in children that incorporates the most useful data from the last two decades. Testing of this new system will be important to determine whether an age-stratified scoring system can unify the way communication of HF severity and research on HF in children is performed in the future.

  8. Shallow structure and geomorphology, northern San Andreas fault, Bodega Bay to Fort Ross, California

    Science.gov (United States)

    Johnson, S. Y.; Hartwell, S. R.; Manson, M. W.

    2013-12-01

    We mapped a 35-km-long section of the northwest-trending San Andreas fault zone (SAFZ), extending through Bodega Bay, crossing the onshore Bodega Head isthmus, and continuing in the offshore to Fort Ross, California. Mapping is based on integrated analysis of high-resolution seismic-reflection profiles (38 fault crossings), multibeam bathymetry and backscatter data, onshore geology, seafloor-sediment samples, and digital camera and video imagery. In Bodega Bay, the SAFZ comprises multiple parallel to subparallel strands that extend through a 2-km-wide basin flanked by massive basement terranes, Cretaceous granitic rock on the southwest and Jurassic and Cretaceous Franciscan Complex on the northeast. Seismic profiles reveal the smooth basin seafloor is underlain by a thin (1 to 12 m) layer of latest Pleistocene and Holocene sediments and an underlying inferred Pleistocene unit characterized by faulted and folded reflections revealing numerous angular unconformities and channels. This geology suggests that Bodega Bay originated as a pull-apart basin formed by an eastern transfer of slip within the SAFZ. If so, the pervasive internal folding and faulting of the young basin fill suggests basin subsidence has largely ended and the basin fill is now being deformed. North of the Bodega Head isthmus, the SAFZ is relatively narrow (200 to 500 m wide) and cuts across relatively flat seafloor covered by sediments derived from the Russian River and Salmon Creek. Gentle fault bends and transfers of slip between subparallel strands have resulted in small fault-zone uplifts and four distinct, elongate (~ 500- to 2300-m long), narrow (~ 200- to 300-m wide) sag basins containing as much as 56 m of inferred latest Pleistocene to Holocene sediment. The offshore mapping suggests the presence of an important, previously unrecognized onshore SAFZ strand cutting across the Bodega Head isthmus about 800 m southwest of the only reported 1906 surface rupture in the map area. Onshore, this

  9. Pockmarks, Western Ross Sea, Antarctica and Mendeleev Ridge, Central Arctic Ocean: Recent and/or Prevalent?

    Science.gov (United States)

    Lawver, L. A.; Hornbach, M. J.; Davis, M. B.; Brumley, K.; Phillips, R. L.

    2008-12-01

    In 2004, the NBP-0401 cruise to the western Ross Sea, found a large field of pockmarks to the north and west of Franklin Island. The pockmarks ranged in size up to 300 m or more in diameter and are up to 30 m deep. The pockmarks are generally circular and are found in a partially surveyed 3,000 km2 region at water depths ranging from 450 m to 510 m. The pockmarks were most concentrated in an area of approximately 400 km2 where they cover as much as 20% of the seafloor. About 50 km to the west of the heavily pockmarked area, a series of seafloor constructions, up to 5 km in diameter and 120 m high were found in water depths of 490 m to 520 m. Again, ice conditions precluded a complete survey but it is believed the circular features may be carbonate mounds very similar in size and water depth to the ones found by Shannon et al. (2007) in the Porcupine Bight region, offshore Ireland. In 2006, the HLY-0602 cruise undertook a seismic refraction experiment along the Mendeleev Ridge in the Arctic ocean. In the course of the experiment, two to three multibeam lines were run approximately along the crest of the ridge from 76° 40'N to 78° 50'N. On HLY-0503, pockmarks were found in the vicinity of 78° 15'N including one extraordinary cluster of pockmarks at 78° 20'N which were cored on HLY-0602. Three gravity cores taken within pockmarks recovered a significant shell hash in the upper 1 cm but carbon analysis on the shells did not reveal any evidence of chemosynthetic origin for the mollusks. Cores taken along the ridge but away from pockmarks had at most a single shell in the upper 1 cm. Shells were not found below the surface of the cores. Pockmarks along the Mendeleev Ridge are found at depths from 820 m to an extraordinary feature at a depth of ~1420 M. This collapse? feature is 10 km by 5 km with a series of pockmarks in its deepest part. The major feature itself has a central depth of 1480 m but pockmarks withing the feature are as deep as 1520 m at their individual

  10. Provenance and post-depositional low-temperature evolution of the James Ross Basin sedimentary rocks (Antarctic Peninsula) based on fission track analysis

    Czech Academy of Sciences Publication Activity Database

    Svojtka, Martin; Nývlt, D.; Murakami, Masaki; Vávrová, J.; Filip, Jiří; Mixa, P.

    2009-01-01

    Roč. 21, č. 6 (2009), s. 593-607 ISSN 0954-1020 R&D Projects: GA MŠk 1K05030 Institutional research plan: CEZ:AV0Z30130516 Keywords : James Ross Island * Seymour Island * Cretaceous–Palaeogene succession * fission track dating * zircon * apatite Subject RIV: DB - Geology ; Mineralogy Impact factor: 1.496, year: 2009

  11. Using C-Span in the Classroom to Enhance Student Analysis of Ross Perot's Sensitivity with American Diversity During the 1992 Presidential Campaign

    Science.gov (United States)

    Schnell, James

    2007-01-01

    The C-SPAN application to be described in this article is useful in the Cross-Cultural Communication and Mass Media courses. This application focuses on how we define what connotes sensitivity & insensitivity with diversity issues and how journalistic interpretation can affect our perception via mass media. Businessman Ross Perot rose from…

  12. 80. Intervención de Ross en valvulopatía aórtica. Nuestra experiencia en los últimos 12 años

    Directory of Open Access Journals (Sweden)

    M.aT. Conejero Jurado

    2010-01-01

    Conclusiones: La intervención de Ross es una técnica con buenos resultados en la valvulopatía aórtica en pacientes jóvenes, con aceptable morbimortalidad a medio plazo así como mejoría de la clínica y de la calidad de vida de estos pacientes.

  13. Influence of a yeast fermented product on the serum levels of the mannan-binding lectin and the antibodies against the Newcastle disease virus in Ross broilers

    DEFF Research Database (Denmark)

    Cortés-Coronado, R F; Gómez-Rosales, S; de L Angeles, M

    2017-01-01

    of MBL were observed, which exhibited different patterns on the Ab titers against NDV in respect to the increasing levels of dietary YFP. This was also observed when the gender effect was introduced in the analysis of data. The results suggest that in Ross broilers raised in commercial conditions...

  14. Common Core State Standards and Teacher Effectiveness. Q&A with Ross Wiener, Ph.D. REL Mid-Atlantic Teacher Effectiveness Webinar Series

    Science.gov (United States)

    Regional Educational Laboratory Mid-Atlantic, 2013

    2013-01-01

    In this REL Mid-Atlantic webinar, Dr. Ross Wiener, Vice President and Executive Director of the Education and Society Program, Aspen Institute, discussed strategies for integrating the Common Core State Standards (CCSS) into teacher effectiveness systems, including ways in which the CCSS can support professional growth and inform teacher…

  15. A Reference-Intensive Embedded Librarian Program: Kresge Business Administration Library's Program to Support Action-Based Learning at the Ross School of Business

    Science.gov (United States)

    Berdish, Laura; Seeman, Corey

    2010-01-01

    While a great deal of literature on embedded librarians in academic libraries is focused on the role of instructor, there are many other services that could be provided by librarians working closely with students. The Kresge Business Administration Library (Stephen M. Ross School of Business at the University of Michigan) has created a unique…

  16. A Qualitative Case Study to Investigate the Technology Acceptance Experience Outlined in the TAM Using the Kubler-Ross Stages of Grieving and Acceptance

    Science.gov (United States)

    Sotelo, Benjamin Eladio

    2015-01-01

    The Technology Acceptance Model (TAM) has been an important model for the understanding of end user acceptance regarding technology and a framework used in thousands of researched scenarios since publication in 1986. Similarly, the Kubler-Ross model of death and dying has also been used as a model for the study of acceptance within the medical…

  17. Assimilating bio-optical glider data during a phytoplankton bloom in the southern Ross Sea

    Directory of Open Access Journals (Sweden)

    D. E. Kaufman

    2018-01-01

    Full Text Available The Ross Sea is a region characterized by high primary productivity in comparison to other Antarctic coastal regions, and its productivity is marked by considerable variability both spatially (1–50 km and temporally (days to weeks. This variability presents a challenge for inferring phytoplankton dynamics from observations that are limited in time or space, which is often the case due to logistical limitations of sampling. To better understand the spatiotemporal variability in Ross Sea phytoplankton dynamics and to determine how restricted sampling may skew dynamical interpretations, high-resolution bio-optical glider measurements were assimilated into a one-dimensional biogeochemical model adapted for the Ross Sea. The assimilation of data from the entire glider track using the micro-genetic and local search algorithms in the Marine Model Optimization Testbed improves the model–data fit by  ∼ 50 %, generating rates of integrated primary production of 104 g C m−2 yr−1 and export at 200 m of 27 g C m−2 yr−1. Assimilating glider data from three different latitudinal bands and three different longitudinal bands results in minimal changes to the simulations, improves the model–data fit with respect to unassimilated data by  ∼ 35 %, and confirms that analyzing these glider observations as a time series via a one-dimensional model is reasonable on these scales. Whereas assimilating the full glider data set produces well-constrained simulations, assimilating subsampled glider data at a frequency consistent with cruise-based sampling results in a wide range of primary production and export estimates. These estimates depend strongly on the timing of the assimilated observations, due to the presence of high mesoscale variability in this region. Assimilating surface glider data subsampled at a frequency consistent with available satellite-derived data results in 40 % lower carbon export, primarily

  18. New Crustal Boundary Revealed Beneath the Ross Ice Shelf, Antarctica, through ROSETTA-Ice Integrated Aerogeophysics, Geology, and Ocean Research

    Science.gov (United States)

    Tinto, K. J.; Siddoway, C. S.; Bell, R. E.; Lockett, A.; Wilner, J.

    2017-12-01

    Now submerged within marine plateaus and rises bordering Antarctica, Australia and Zealandia, the East Gondwana accretionary margin was a belt of terranes and stitched by magmatic arcs, later stretched into continental ribbons separated by narrow elongate rifts. This crustal architecture is known from marine geophysical exploration and ocean drilling of the mid-latitude coastal plateaus and rises. A concealed sector of the former East Gondwana margin that underlies the Ross Ice Shelf (RIS), Antarctica, is the focus of ROSETTA-ICE, a new airborne data acquisition campaign that explores the crustal makeup, tectonic boundaries and seafloor bathymetry beneath RIS. Gravimeters and a magnetometer are deployed by LC130 aircraft surveying along E-W lines spaced at 10 km, and N-S tie lines at 55 km, connect 1970s points (RIGGS) for controls on ocean depth and gravity. The ROSETTA-ICE survey, 2/3 completed thus far, provides magnetic anomalies, Werner depth-to-basement solutions, a new gravity-based bathymetric model at 20-km resolution, and a new crustal density map tied to the 1970s data. Surprisingly, the data reveal that the major lithospheric boundary separating East and West Antarctica lies 300 km east of the Transantarctic Mountains, beneath the floating RIS. The East and West regions have contrasting geophysical characteristics and bathymetry, with relatively dense lithosphere, low amplitude magnetic anomalies, and deep bathymetry on the East Antarctica side, and high amplitude magnetic anomalies, lower overall density and shallower water depths on the West Antarctic side. The Central High, a basement structure cored at DSDP Site 270 and seismically imaged in the Ross Sea, continues beneath RIS as a faulted but coherent crustal ribbon coincident with the tectonic boundary. The continuity of Gondwana margin crustal architecture discovered beneath the West Antarctic Ice Sheet requires a revision of the existing tectonic framework. The sub-RIS narrow rift basins and

  19. Propagandast poliitilise korrektsuseni / Peeter Rebane

    Index Scriptorium Estoniae

    Rebane, Peeter, 1973-

    2007-01-01

    AS-i Uus Sakala juht kirjutab Tallinnasse uue kultuurikeskuse rajamise vastasest propagandasõjast ning tõdeb, et on aeg kasutusele võtta uus termin "JOKE-poliitikud" ehk inimesed, kes oma populaarsuse nimel on valmis käituma loosungi all "Juriidiliselt on kõik ebakorrektne, aga me teeme seda ikkagi"

  20. Kolmanda raamatu kiituseks / Peeter Olesk

    Index Scriptorium Estoniae

    Olesk, Peeter, 1953-

    2009-01-01

    Tutvustus: Isaacson, Walter. Einstein : tema elu ja universum / tõlkinud Matti Piirimaa. Tallinn : Eesti Raamat, 2009; Fortey, Jacqueline. Kuulsad teadlased (Silmaring) / tõlkinud Ülle Haav ja Helen Haav. Tallinn : Koolibri, 2009; Vaim ja aeg (Lehed ja tähed : looduse ja teaduse aastaraamat, 5) / koostanud Indrek Rohtmets ja Toomas Kukk. Tallinn : Loodusajakiri, 2009

  1. Vana kinematograafia kaitseks / Peeter Riba

    Index Scriptorium Estoniae

    Riba, Peeter, 1967-

    1999-01-01

    Raoul Ruiz'i 1997.a. ilmunud raamatu "Filmikunsti poeetika" ("Poétique du cinéma") arvustus. Lisa : Artikkel Raoul Ruiz'i (1941-2011) kohta Ephraim Katzi entsüklopeediast "The Film Encyclopedia": Harper Perennial, 1998

  2. Japan is far... / Peeter Miller

    Index Scriptorium Estoniae

    Miller, Peeter

    2007-01-01

    Eesti suursaadik Jaapanis Eesti ja Jaapani suhete ajaloost, Jaapani keisri Akihito ja keisrinna Michiko ametlikust visiidist Eestisse 2007. a. mais. Juuresolevatel fotodel president Toomas Hendrik Ilves ja proua Evelin Ilves kõrgeid külalisi vastu võtmas

  3. Kivistatud kurjad teod / Peeter Pere

    Index Scriptorium Estoniae

    Pere, Peeter, 1957-

    2011-01-01

    Kommunismiohvrite memoriaali ideekavandite võistlusest, võidutöödest. I-II preemia - märgusõna Vest (autorid Armin Valter, Joel Kopli). I-II preemia - märgusõna Mälutulbad (autor Koit Ojaliiv). Eripreemiad - märgusõna Otsuste rand (autorid Roland Reemaa, Laura Linsi), märgusõna Introvert (autorid Urmas Paul, Martin Lepplaan, Evelin Reimand, Martin Noorväli), märgusõna Padakonn (autorid Vadim Fomitsev, Mart Liho, Ekke Väli)

  4. Probleemtooted vajavad registreerimist / Peeter Eek

    Index Scriptorium Estoniae

    Eek, Peeter, 1963-

    2006-01-01

    2005. aasta suvel jäätmeseadusse tehti täiendus, millega nähti ette probleemtoodete registri loomine. Eelnõu kinnitati Vabariigi Valitsuse määrusena jaanuaris 2006. Tänased turuosalised on kohustatud ennast registreerima kas eraldi või kollektiivselt ehk nn. tootjavastutusorganisatsioonide (TVO) kaudu. Ilmunud ka Lääne Elu : Keskkonnaleht 18. märts 2006, lk. 3 ; Vooremaa 21. märts 2006, lk. 5 ; Koit : Keskkond 28. märts 2006, lk. 15 - 16 ; Järva Teataja : Järvamaa Keskkond 13. aprill 2006, lk. 3 ; Virumaa Teataja : Roheline Maakond 4. mai 2006, lk. 2 ; Võrumaa Teataja : Võrumaa Keskkonnaleht 25. mai 2006, lk. 3 ; Nädaline : Keskkonnaleht 23. sep. 2006, lk. 8 ; Hiiu Leht : Hiiumaa Looduse Leht 19. Dets. 2006, lk. 1

  5. [Raamat] / Peeter Künstler

    Index Scriptorium Estoniae

    Künstler, Peeter, 1958-2009

    2003-01-01

    Tutvustus: Bierce, Ambrose Gwinnett. Teadmata kadunud : [novellid / tõlkinud Urve Hanko].Tallinn : Eesti Raamat, 2003; Poe, Edgar Allan. Eleonora ja teisi novelle / [tõlkinud ja järelsõna: Urve Hanko]. Tallinn : Eesti Raamat, 2002

  6. Uusaastatervitus mitmelt monopolilt! / Peeter Tammistu

    Index Scriptorium Estoniae

    Tammistu, Peeter, 1953-

    2011-01-01

    AS Veolia on jätnud Tallinnas prügikonteinereid tühjendamata, põhjendades seda teede läbimatusega. Autor märgib, et kuna linn on andnud prügiveo ainuõiguse monopolile, pole tal ka võimalust teenusepakkujat vahetada, ning kui linnavõim ei tule toime monopoli ohjeldamisega, siis lasku teenus vabaks

  7. Out of shadow / Peeter Linnap

    Index Scriptorium Estoniae

    Linnap, Peeter, 1960-

    2007-01-01

    "Out of shadow" oli näitus Baltimaade 1990. aastate kunstist Ameerika publikule - sõnumiks iseseisvumisjärgsete aastate materiaalse, sotsiaalse ning vaimuelu peegeldused/tõlgendused visuaalses kunstis

  8. Younger Estonian Prose / Peeter Helme

    Index Scriptorium Estoniae

    Helme, Peeter, 1978-

    2008-01-01

    Iga kahe aasta tagant korraldatavast romaanivõistlusest ning uutest ja noortest autoritest, pikemalt Indrek Harglast, Lew R. Bergist, Jaan Apsist, Joonas Sildrest, Diana Leesalust, Marion Andrast, Tiina Laanemist, Olle Laulist, Chaneldiorist, Vahur Afanasjevist, Mehis Heinsaarest, Mart Kangurist, Ivar Ravist, Jaak Rannast

  9. Noored ergastavad kunstielu / Peeter Ora

    Index Scriptorium Estoniae

    Ora, Peeter

    2009-01-01

    Omaloomingu projekti "Noor kunst" näitustest Viljandi kultuurimajas, linnagaleriis ja Pärimusmuusika aidas. Liis Saare ja Maria Alesma fotodest ning Liis Tammani, Kalli Kalmeti ja Kadri Villemi maalidest

  10. Time budgets of Snow Geese Chen caerulescens and Ross's Geese Chen rossii in mixed flocks: Implications of body size, ambient temperature and family associations

    Science.gov (United States)

    Jonsson, J.E.; Afton, A.D.

    2009-01-01

    Body size affects foraging and forage intake rates directly via energetic processes and indirectly through interactions with social status and social behaviour. Ambient temperature has a relatively greater effect on the energetics of smaller species, which also generally are more vulnerable to predator attacks than are larger species. We examined variability in an index of intake rates and an index of alertness in Lesser Snow Geese Chen caerulescens caerulescens and Ross's Geese Chen rossii wintering in southwest Louisiana. Specifically we examined variation in these response variables that could be attributed to species, age, family size and ambient temperature. We hypothesized that the smaller Ross's Geese would spend relatively more time feeding, exhibit relatively higher peck rates, spend more time alert or raise their heads up from feeding more frequently, and would respond to declining temperatures by increasing their proportion of time spent feeding. As predicted, we found that Ross's Geese spent more time feeding than did Snow Geese and had slightly higher peck rates than Snow Geese in one of two winters. Ross's Geese spent more time alert than did Snow Geese in one winter, but alert rates differed by family size, independent of species, in contrast to our prediction. In one winter, time spent foraging and walking was inversely related to average daily temperature, but both varied independently of species. Effects of age and family size on time budgets were generally independent of species and in accordance with previous studies. We conclude that body size is a key variable influencing time spent feeding in Ross's Geese, which may require a high time spent feeding at the expense of other activities. ?? 2008 The Authors.

  11. Luminescence dating of paleolake deltas and glacial deposits in Garwood Valley, Antarctica: Implications for climate, Ross ice sheet dynamics, and paleolake duration

    Science.gov (United States)

    Levy, Joseph S.; Rittenour, Tammy M.; Fountain, Andrew G.; O'Connor, Jim E.

    2017-01-01

    The formation of perched deltas and other lacustrine deposits in the McMurdo Dry Valleys of Antarctica is widely considered to be evidence of valley-filling lakes dammed by the grounded Ross Sea ice sheet during the local Last Glacial Maximum, with lake drainage interpreted as a record of grounding line retreat. We used luminescence dating to determine the age of paleolake deltas and glacial tills in Garwood Valley, a coastal dry valley that opens to the Ross Sea. Luminescence ages are stratigraphically consistent with radiocarbon results from algal mats within the same delta deposits but suggest radiocarbon dates from lacustrine carbonates may overestimate deposit ages by thousands of years. Results suggest that late Holocene delta deposition into paleolake Howard in Garwood Valley persisted until ca. 3.5 ka. This is significantly younger than the date when grounded ice is thought to have retreated from the Ross Sea. Our evidence suggests that the local, stranded ice-cored till topography in Garwood Valley, rather than regional ice-sheet dynamics, may have controlled lake levels for some McMurdo Dry Valleys paleolakes. Age control from the supraglacial Ross Sea drift suggests grounding and up-valley advance of the Ross Sea ice sheet into Garwood valley during marine oxygen isotope stage (MIS) 4 (71–78 ka) and the local Last Glacial Maximum (9–10 ka). This work demonstrates the power of combining luminescence dating with existing radiocarbon data sets to improve understanding of the relationships among paleolake formation, glacial position, and stream discharge in response to climate change.

  12. Vector competence of Aedes albopictus from Houston, Texas, for dengue serotypes 1 to 4, yellow fever and Ross River viruses.

    Science.gov (United States)

    Mitchell, C J; Miller, B R; Gubler, D J

    1987-09-01

    A combination of virus infection and transmission experiments showed that a Houston, Texas strain of Aedes albopictus is a competent vector for dengue (DEN), yellow fever (YF) and Ross River (RR) viruses. However, at 14 days incubation, DEN virus infection rates in a Puerto Rican strain of Aedes aegypti were significantly higher for each of the four DEN serotypes, except DEN-1, than in Houston Ae. albopictus fed simultaneously on the same virus suspensions. The degree of correlation between disseminated DEN infection rates in Houston Ae. albopictus and transmission to an in vitro system ranged from 42 to 88% for the four DEN serotypes. No significant difference was noted in YF virus infection rates or transmission rates in the two mosquito species fed on the same virus suspensions and incubated for the same time period. Also, RR virus infection and transmission rates in Houston and Hawaiian strains of Ae. albopictus were generally comparable.

  13. Ice Stream Slowdown Will Drive Long-Term Thinning of the Ross Ice Shelf, With or Without Ocean Warming

    Science.gov (United States)

    Campbell, Adam J.; Hulbe, Christina L.; Lee, Choon-Ki

    2018-01-01

    As time series observations of Antarctic change proliferate, it is imperative that mathematical frameworks through which they are understood keep pace. Here we present a new method of interpreting remotely sensed change using spatial statistics and apply it to the specific case of thickness change on the Ross Ice Shelf. First, a numerical model of ice shelf flow is used together with empirical orthogonal function analysis to generate characteristic patterns of response to specific forcings. Because they are continuous and scalable in space and time, the patterns allow short duration observations to be placed in a longer time series context. Second, focusing only on changes that are statistically significant, the synthetic response surfaces are used to extract magnitude and timing of past events from the observational data. Slowdown of Kamb and Whillans Ice Streams is clearly detectable in remotely sensed thickness change. Moreover, those past events will continue to drive thinning into the future.

  14. The influence of short-term events on the hydrographic and biological structure of the southwestern Ross Sea

    Science.gov (United States)

    Jones, Randolph M.; Smith, Walker O.

    2017-02-01

    The Ross Sea continental shelf supports very high productivity and phytoplankton biomass. Conventional methods, including ship-based sampling, instrumented moorings, satellite imagery, and modelling, have illustrated the typical patterns of seasonal progression of the phytoplankton blooms. While variability in the Ross Sea is substantial over relatively large scales, our understanding of smaller scales of variability (on the order of a few hours or several kilometers) is limited. Utilizing data from an autonomous glider, we examined the mechanisms driving both the transitions between stages of the phytoplankton bloom and the short-term perturbations in chlorophyll concentrations. Three phases within the bloom were defined based on chlorophyll changes: an accumulation phase, a dissipation period, and a post-dissipation phase. Short-term perturbations in chlorophyll were repeatedly observed and correlated with wind speed. These chlorophyll perturbations were strongly influenced by the degree of temporal coupling between wind events and the depth of mixing, which varied among phases. Delays of 12-24 h between wind events and chlorophyll changes were observed during the accumulation phase, but shortened to 2-12 h in the dissipation phase. Furthermore, while physical factors contributed to the observed short-term reductions in biomass and the appearance of chlorophyll at depth throughout the study, we hypothesize that turbulence during the period of maximum biomass induced aggregate formation and led to rapid vertical flux. These results suggest that the small-scale, short-term physical perturbations may induce substantial vertical redistribution of biogenic material, which in turn can have significant biogeochemical impacts.

  15. Growth and Carcass Composition Response of Different Protein Food Level for Ross 308 Hybrid Reared in Organic System

    Directory of Open Access Journals (Sweden)

    Eliza Simiz

    2014-05-01

    Full Text Available The purpose of this experiment was to assess the impact of various protein levels and of the administration periods of CM on the growth and carcass composition in Ross 308 hybrid ecologically raised. The experiment was conducted over a period of 84 days on a flock of 108 chickens belonging to Ross 308 commercial hybrid. There were three experimental groups consisting of 36 chickens. The chickens were fed with the tri-phase feeding program in G1, and with the bi-phase feeding program in G2 and G3, as follows: G1 and G2 with the same period of administration of CM and with close protein levels, but in G2 the biological value of the protein in CM starter was higher. G3 chickens were fed with the bi-phase feeding program, respectively 1-28 days and 29-84 days where the protein level was of 20.94 % and 16.98 % CP. Chickens in G2 and G3 received the same CM starter structure with a protein level of 20.94 % with an upper VB. Statistical analysis of the received results was performed by the IBM SPSS 19 software using the analysis of the variant and the testing of significance with ANOVA test complemented by Tukey posthoc test. It can be appreciated that the body weight was significantly influenced (G2 -3826.33 g, and in G3 -3669.96 g by incorporating an animal protein source (boiled egg in the CM structure, which after a good start allows the application of a two-phase feeding technology (in G3, which significantly simplifies the growing process of broilers. This experimental scheme did not cause significant differences in the quality of meat or in the weight of the carved parties of the broiler carcasses.

  16. Seasonal variation of air temperature at the Mendel Station, James Ross Island in the period of 2006-2009

    Science.gov (United States)

    Laska, Kamil; Prošek, Pavel; Budík, Ladislav

    2010-05-01

    Key words: air temperature, seasonal variation, James Ross Island, Antarctic Peninsula Recently, significant role of the atmospheric and oceanic circulation variation on positive trend of near surface air temperature along the Antarctic Peninsula has been reported by many authors. However, small number of the permanent meteorological stations located on the Peninsula coast embarrasses a detail analysis. It comprises analysis of spatiotemporal variability of climatic conditions and validation of regional atmospheric climate models. However, geographical location of the Czech Johann Gregor Mendel Station (hereafter Mendel Station) newly established on the northern ice-free part of the James Ross Island provides an opportunity to fill the gap. There are recorded important meteorological characteristics which allow to evaluate specific climatic regime of the region and their impact on the ice-shelf disintegration and glacier retreat. Mendel Station (63°48'S, 57°53'W) is located on marine terrace at the altitude of 7 m. In 2006, a monitoring network of several automatic weather stations was installed at different altitudes ranging from the seashore level up to mesas and tops of glaciers (514 m a.s.l.). In this contribution, a seasonal variation of near surface air temperature at the Mendel Station in the period of 2006-2009 is presented. Annual mean air temperature was -7.2 °C. Seasonal mean temperature ranged from +1.4 °C (December-February) to -17.7 °C (June-August). Frequently, the highest temperature occurred in the second half of January. It reached maximum of +8.1 °C. Sudden changes of atmospheric circulation pattern during winter caused a large interdiurnal variability of air temperature with the amplitude of 30 °C.

  17. Influence of coupling on atmosphere, sea ice and ocean regional models in the Ross Sea sector, Antarctica

    Energy Technology Data Exchange (ETDEWEB)

    Jourdain, Nicolas C. [LGGE, UMR 5183, CNRS-UJF, Grenoble (France); LEGI, UMR 5519, CNRS-UJF-INPG, Grenoble (France); Mathiot, Pierre; Barnier, Bernard [LEGI, UMR 5519, CNRS-UJF-INPG, Grenoble (France); Gallee, Hubert [LGGE, UMR 5183, CNRS-UJF, Grenoble (France)

    2011-04-15

    Air-sea ice-ocean interactions in the Ross Sea sector form dense waters that feed the global thermohaline circulation. In this paper, we develop the new limited-area ocean-sea ice-atmosphere coupled model TANGO to simulate the Ross Sea sector. TANGO is built up by coupling the atmospheric limited-area model MAR to a regional configuration of the ocean-sea ice model NEMO. A method is then developed to identify the mechanisms by which local coupling affects the simulations. TANGO is shown to simulate realistic sea ice properties and atmospheric surface temperatures. These skills are mostly related to the skills of the stand alone atmospheric and oceanic models used to build TANGO. Nonetheless, air temperatures over ocean and winter sea ice thickness are found to be slightly improved in coupled simulations as compared to standard stand alone ones. Local atmosphere ocean feedbacks over the open ocean are found to significantly influence ocean temperature and salinity. In a stand alone ocean configuration, the dry and cold air produces an ocean cooling through sensible and latent heat loss. In a coupled configuration, the atmosphere is in turn moistened and warmed by the ocean; sensible and latent heat loss is therefore reduced as compared to the stand alone simulations. The atmosphere is found to be less sensitive to local feedbacks than the ocean. Effects of local feedbacks are increased in the coastal area because of the presence of sea ice. It is suggested that slow heat conduction within sea ice could amplify the feedbacks. These local feedbacks result in less sea ice production in polynyas in coupled mode, with a subsequent reduction in deep water formation. (orig.)

  18. Aortic valve repair for insufficiency in older children offers unpredictable durability that may not be advantageous over a primary Ross operation†.

    Science.gov (United States)

    Wilder, Travis J; Caldarone, Christopher A; Van Arsdell, Glen S; Pham-Hung, Eric; Gritti, Michael; Al Jughiman, Mohammed; Hickey, Edward J

    2016-03-01

    To evaluate the durability of aortic valve (AoV) repair relative to other strategies for children with significant aortic insufficiency (AI). From 2001 to 2012, 90 children with greater than or equal to moderate AI underwent surgery. Resulting procedures were classified according to final operative outcome: AoV repair (repair; n = 46, 51%), Ross procedure (Ross; n = 21, 23%) or replacement with mechanical or tissue prosthesis [aortic valve replacement (AVR); n = 23, 26%]. Repeated measures (n = 1081 echocardiograms) mixed-model analysis and parametric multiphase risk-adjusted hazard analysis were used to evaluate haemodynamic parameters and durability of operations. Mean age at operation was similar for repair and Ross groups, but slightly higher for the AVR group (10.6, 11 and 13.2, respectively; P = 0.04). Baseline annular dimensions were similar among groups. Of 46 repairs, 85% involved pericardial leaflet extensions (commonly with leaflet shaving and/or commisuroplasty). The remaining repairs were commissuroplasties. On multivariable analysis, repair was associated with increased early (∼1-2 years) AI and increased outflow tract peak pressure gradients relative to Ross and AVR procedures. On univariate analysis, repairs tended to have a larger annulus size compared with Ross or AVR; however, this was not significant on multivariable analysis. There were 25 reinterventions (surgical reoperation = 16; transcatheter intervention = 9) for 22 children. Freedom from surgical reoperation was 64, 100 and 51% at 6 years for repairs, Ross and AVR, respectively (P = 0.05); however, three of five reoperations after AVR were for failed bioprosthetic devices. The freedom from reintervention was not significantly influenced by the type of AoV operation (P = 0.43). Durability of aortic valve repair for children is limited by recurrence of AI and/or stenosis, often within the first few years. After repair, reoperation should be anticipated within ∼7 years. © The Author

  19. Ross Sea oceanographic data, 1983-1987 : USCGC Glacier, January-February 1983; USCGC Polar Sea, January-February 1984; USCGC Polar Star, February 1985; USCGC Polar Sea, February 1987 (NODC Accession 8900108)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Temperature profile and chemical data were collected using CTD casts from USCGC POLAR SEA and other platforms in the Ross Sea from 19 December 1976 to 06 February...

  20. Temperature profile and nutrients data collected using bottle casts from the POLAR DUKE and NATHANIEL B. PALMER in the Ross Sea and Southern Oceans from 10 November 1997 to 12 December 1997 (NODC Accession 0000898)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Temperature profile and nutrients data were collected using bottle casts in the Ross Sea and Southern Oceans from the POLAR DUKE and NATHANIEL B. PALMER. Data were...

  1. Temperature profile and nutrients data collected using bottle casts from the POLAR DUKE in the Ross Sea and Southern Oceans from 08 October 1996 to 06 November 1996 (NODC Accession 0000894)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Temperature profile and nutrients data were collected using bottle casts in the Ross Sea and Southern Oceans from POLAR DUKE. Data were collected from 08 October...

  2. Temperature profile and nutrients data collected using bottle casts from the POLAR DUKE AND NATHANIEL B. PALMER in the Ross Sea and Southern Oceans from 12 January 1997 to 09 February 1997 (NODC Accession 0000896)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Temperature profile and nutrients data were collected using bottle casts in the Ross Sea and Southern Oceans from the POLAR DUKE and NATHANIEL B. PALMER. Data were...

  3. Temperature profile and nutrients data collected using bottle casts from the NATHANIEL B. PALMER in the Ross Sea and Southern Oceans from 09 November 1994 to 08 December 1994 (NODC Accession 0000899)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Temperature profile and nutrients data were collected using bottle casts in the Ross Sea and Southern Oceans from the NATHANIEL B. PALMER. Data were collected from...

  4. Temperature profile and nutrients data collected using bottle casts from the NATHANIEL B. PALMER in the Ross Sea and Southern Oceans from 16 December 1995 to 13 January 1996 (NODC Accession 0000889)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Temperature profile and nutrients data were collected using bottle casts in the Ross Sea and Southern Oceans from the NATHANIEL B. PALMER. Data were collected from...

  5. Temperature profile and nutrients data collected using bottle casts from the POLAR DUKE in the Ross Sea and Southern Oceans from 05 February 1992 to 28 February 1992 (NODC Accession 0000888)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Temperature profile and nutrients data were collected using bottle casts in the Ross Sea and Southern Oceans from the POLAR DUKE. Data were collected from 05...

  6. Temperature profile and nutrients data collected using bottle casts from the POLAR DUKE in the Ross Sea and Southern Oceans from 13 November 1996 to 26 November 1996 (NODC Accession 0000895)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Temperature profile and nutrients data were collected using bottle casts in the Ross Sea and Southern Oceans from the POLAR DUKE. Data were collected from 13...

  7. Temperature profile and nutrients data collected using bottle casts from the POLAR DUKE in the Ross Sea and Southern Oceans from 06 September 1996 to 12 September 1996 (NODC Accession 0000890)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Temperature profile and nutrients data were collected using bottle casts in the Ross Sea and Southern Oceans from POLAR DUKE. Data were collected from 06 September...

  8. Monitoring of active layer thermal regime and depth on CALM-S site, James Ross Island, Eastern Antarctic Peninsula

    Science.gov (United States)

    Hrbáček, Filip; Kňažková, Michaela; Nývlt, Daniel; Láska, Kamil; Mueller, Carsten W.; Ondruch, Jakub

    2017-04-01

    Active layer thickness and its dynamic are considered one of the key parameters of permafrost-affected ground. They variability are very sensitive to specific local conditions, especially climate, vegetation, snow cover or soil texture and moisture. To better understand the local variability of active layer thickness in Antarctica, the original Circumpolar Active Layer Monitoring protocol (CALM) was adapted as its southern form (CALM-S) with respect to specific conditions of Antarctica. To date, almost 40 CALM-S sites were registered across the Antarctic continent with the highest density on western Antarctic Peninsula (South Shetlands) and Victoria Land in East Antarctica (McMurdo region). On James Ross Island, CALM-S site was established in February 2014 as the first CALM-S in the eastern Antarctic Peninsula region. The CALM-S site is located near the Johann Gregor Mendel Station on the northern coast of James Ross Island. The area delimited to 80 × 70 m is elevated at 8 to 11 m asl. Geologically it consists of a Holocene marine terrace ( 80% of CALM-S area) with typical sandy material and passes to lithified to poorly disintegrated sedimentary rocks of Cretaceous Whisky Bay Formation ( 20% of CALM-S area) with a more muddy material and a typical bimodal composition. For both geologically different parts of CALM-S site, ground temperature was measured at two profiles at several levels up to 200 cm depth using resistance thermometers Pt100/8 (accuracy ± 0.15 °C). The air temperature at 2 m above surface was monitored at the automatic weather station near Johann Gregor Mendel Station using resistance thermometer Pt100/A (accuracy ± 0.15 °C). Data used in this study were obtained during the period from 1 March 2013 to 6 February 2016. Mechanical probing of active layer depth was performed in 72 grid points at the end of January, or beginning of February in 2014 to 2016. During the whole study period, mean annual air temperature varied between -7.0 °C (2013

  9. Ross filter pairs for metal artefact reduction in x-ray tomography: a case study based on imaging and segmentation of metallic implants

    Science.gov (United States)

    Arhatari, Benedicta D.; Abbey, Brian

    2018-01-01

    Ross filter pairs have recently been demonstrated as a highly effective means of producing quasi-monoenergetic beams from polychromatic X-ray sources. They have found applications in both X-ray spectroscopy and for elemental separation in X-ray computed tomography (XCT). Here we explore whether they could be applied to the problem of metal artefact reduction (MAR) for applications in medical imaging. Metal artefacts are a common problem in X-ray imaging of metal implants embedded in bone and soft tissue. A number of data post-processing approaches to MAR have been proposed in the literature, however these can be time-consuming and sometimes have limited efficacy. Here we describe and demonstrate an alternative approach based on beam conditioning using Ross filter pairs. This approach obviates the need for any complex post-processing of the data and enables MAR and segmentation from the surrounding tissue by exploiting the absorption edge contrast of the implant.

  10. Coping with the loss of large, energy-dense prey: a potential bottleneck for Weddell Seals in the Ross Sea.

    Science.gov (United States)

    Salas, Leo; Nur, Nadav; Ainley, David; Burns, Jennifer; Rotella, Jay; Ballard, Grant

    2017-01-01

    Extraction of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea began in 1997, following a management plan that targets the largest fish with a goal of reducing the spawning biomass by 50% over 35 yr. We investigate the potential long-term consequences of the reduced availability of this prey for Weddell seals (Leptonychotes weddellii). Energy demands in seals are acute, especially immediately following lactation, when females must recover substantial mass and cope with molting costs. We tested the hypothesis that toothfish are critically important for adult female seals during this period. Toothfish body mass is three orders of magnitude greater, and its energy density nearly double that of the most common seal prey, Antarctic silverfish (Pleuragramma antarcticum). Reduction or elimination of toothfish consumption could impair a female's ability to sufficiently recover and successfully produce a pup in the following pupping season. Our goals are to (1) illustrate mechanisms and conditions whereby toothfish depletion might plausibly affect seal population trends; (2) identify measurable parameters of the seals' ecology that may help better understand the potential negative impact of toothfish depletion on seal populations; and (3) promote a precautionary management approach for the fishery that includes monitoring of seal populations We constructed a set of inter-linked models of seal diving behavior, physiological condition, and demography based on existing information. We evaluate the effect of the following factors on seal mass recovery and intrinsic population growth rates: fishery depletion rate, daily diving limits, probability of a successful dive, and body mass recovery target. We show that loss of toothfish has the greatest potential impact on seal populations' growth rate. Under some scenarios, populations may decrease at >10% per year. Critical parameters to better understand fishery impacts include prevalence and size of toothfish in the seals

  11. Neoglacial Antarctic sea-ice expansion driven by mid-Holocene retreat of the Ross Ice Shelf.

    Science.gov (United States)

    Bendle, J. A.; Newton, K.; Mckay, R. M.; Crosta, X.; Etourneau, J.; Anya, A. B.; Seki, O.; Golledge, N. R.; Bertler, N. A. N.; Willmott, V.; Schouten, S.; Riesselman, C. R.; Masse, G.; Dunbar, R. B.

    2017-12-01

    Recent decades have seen expanding Antarctic sea-ice coverage, coeval with thinning West Antarctic Ice Sheet (WAIS) ice shelves and the rapid freshening of surface and bottom waters along the Antarctic margin. The mid-Holocene Neoglacial transition represents the last comparable baseline shift in sea-ice behaviour. The drivers and feedbacks involved in both the recent and Holocene events are poorly understood and characterised by large proxy-model mismatches. We present new records of compound specific fatty acid isotope analyses (δ2H-FA), highly-branched isoprenoid alkenes (HBIs) TEX86L temperatures, grain-size, mass accumulations rates (MARs) and image analyses from a 171m Holocene sediment sequence from Site U1357 (IODP leg 318). In combination with published records we reconstruct Holocene changes in glacial meltwater, sedimentary inputs and sea-ice. The early Holocene (11 to 10 ka) is characterised by large fluctuations in inputs of deglacial meltwater and sediments and seismic evidence of downlapping material from the south, suggesting a dominating influence from glacial retreat of the local outlet glaciers. From 10 to 8 ka there is decreasing meltwater inputs, an onlapping drift and advection of material from the east. After ca. 8 ka positively correlated δ2H-FA and MARs infer that pulses of glacial melt correlate to stronger easterly currents, driving erosion of material from upstream banks and that the Ross Ice Shelf (RIS) becomes a major influence. A large mid-Holocene meltwater pulse (preceded by warming TEX86L temperatures) is evident between ca. 6 to 4.5 ka, culminating in a rapid and permanent increase in sea-ice from 4.5 ka. This is coeval with cosmogenic nuclide evidence for a rapid thinning of the Antarctic ice sheet during the mid-Holocene (Hein et al., 2016). We suggest this represents a final major pulse of deglaciation from the Ross Ice Shelf, which initiates the Neoglacial, driving cool surface waters along the coast and greater sea

  12. Heinrich Stahlist värske pilguga / Piret Lotman, Kristiina Ross, Aivar Põldvee, Annika Viht ; intervjueerinud Külli Habicht, Külli Prillop

    Index Scriptorium Estoniae

    2014-01-01

    Heinrich Stahli keelelise ja kultuurilise panuse ning tema rolli väärtustamise teemadel vahetasid mõtteid Eesti Rahvusraamatukogu vanemteadur, teose "Heinrich Stahli elu ja looming" autor Piret Lotman, EKI vanemteadur Kristiina Ross, EKI ja TLÜ ajaloo instituudi vanemteadur Aivar Põldvee, TLÜ lektor Annika Viht ning Stahli teoste "Hand- und Hauszbuch" ja "Leyen-Spiegel" sõnastiku koostajad Külli Prillop ja Külli Habicht

  13. Influence of Ross Sea Bottom Water changes on the warming and freshening of the Antarctic Bottom Water in the Australian-Antarctic Basin

    Directory of Open Access Journals (Sweden)

    K. Shimada

    2012-07-01

    Full Text Available Changes to the properties of Antarctic Bottom Water in the Australian-Antarctic Basin (AA-AABW between the 1990s and 2000s are documented using data from the WOCE Hydrographic Program (WHP and repeated hydrographic surveys. Strong cooling and freshening are observed on isopycnal layers denser than γn = 28.30 kg m−3. Changes in the average salinity and potential temperature below this isopycnal correspond to a basin-wide warming of 1300 ± 200 GW and freshening of 24 ± 3 Gt year−1. Recent changes to dense shelf water in the source regions in the Ross Sea and George V Land can explain the freshening of AA-AABW but not its extensive warming. An alternative mechanism for this warming is a decrease in the supply of AABW from the Ross Sea (RSBW. Hydrographic profiles between the western Ross Sea and George V Land (171–158° E were analyzed with a simple advective-diffusive model to assess the causes of the observed changes. The model suggests that the warming of RSBW observed between the 1970s and 2000s can be explained by a 21 ± 23% reduction in RSBW transport and the enhancement of the vertical diffusion of heat resulting from a 30 ± 7% weakening of the abyssal stratification. The documented freshening of Ross Sea dense shelf water leads to a reduction in both salinity and density stratification. Therefore the direct freshening of RSBW at its source also produces an indirect warming of the RSBW. A simple box model suggests that the changes in RSBW properties and volume transport (a decrease of 6.7% is assumed between the year 1995 and 2005 can explain 51 ± 6% of the warming and 84 ± 10% of the freshening observed in AA-AABW.

  14. Dissolved rare earth elements in the central-western sector of the Ross Sea, Southern Ocean: Geochemical tracing of seawater masses.

    Science.gov (United States)

    Turetta, Clara; Barbaro, Elena; Capodaglio, Gabriele; Barbante, Carlo

    2017-09-01

    The present essay contributes to the existing literature on rare earth elements (REEs) in the southern hemisphere by presenting the first data, to our knowledge, on the vertical profiles of dissolved REEs in 71 samples collected in the central-western sector of the Ross Sea (Southern Ocean-SO). The REEs were measured in the water samples collected during the 2002-2003 and 2005-2006 austral summers. 4 samples were collected and analysed in the framework of a test experiment, as part of the WISSARD Project (Whillans Ice Stream Subglacial Access Research Drilling). Our results show significant differences between the REE patterns of the main water masses present in the SO: we could observe specific signature in the High Salinity Shelf Water (HSSW), Ice Shelf Water (ISW) and Low Salinity Shelf Water (LSSW). A significant increase in Terbium (Tb) concentration was observed in the HSSW and ISW, the two principal water masses contributing to the formation of Antarctic Bottom Water (AABW) in the Ross Sea area, and in LSSW. Some of the HSSW samples show enrichment in Neodymium (Nd). Dissolved REE could therefore be used as tracers to understand the deep circulation of the SO (Pacific sector). We hypothesize that: (I) the characteristic dissolved REE pattern may derive from the composition of source area and from the hydrothermal activity of the central-western area of the Ross Sea; (II) the Tb anomaly observed in the AABW on the South Australian platform could be partially explained by the contribution of AABW generated in the Ross Sea region. Copyright © 2017 Elsevier Ltd. All rights reserved.

  15. Provenance and post-sedimentary low-temperature evolution of the James Ross Basin sediments (Antarctic Peninsula) based on zircon and apatite fission-track analysis

    Czech Academy of Sciences Publication Activity Database

    Svojtka, Martin; Murakami, Masaki; Nývlt, D.; Macáková, J.; Filip, Jiří; Mixa, P.

    2007-01-01

    Roč. 71, 15 S1 (2007), A990-A990 ISSN 0046-564X. [Annual V. M. Goldschmidt Conference /17./. 19.08.2007-24.08.2007, Cologne] R&D Projects: GA MŠk 1K05030 Institutional research plan: CEZ:AV0Z30130516 Keywords : fission-track * zircon * apatite * James Ross, * Antarctica Subject RIV: DB - Geology ; Mineralogy

  16. Aeolian dust in the Talos Dome ice core (East Antarctica, Pacific/Ross Sea sector): Victoria Land versus remote sources over the last two climate cycles

    OpenAIRE

    Delmonte, B.; Baroni, C.; Andersson, P.S.; Schöberg, H.; Hansson, M.; Aciego, S.; Petit, J.R.; Albani, S.; Mazzola, C.; Maggi, V.; Frezzotti, M.

    2010-01-01

    International audience; A new ice core (TALDICE) drilled at Talos Dome (East Antarctica, Ross Sea sector) preserves a ca. 250 ka long record of palaeoclimate and atmospheric history. We investigate dust variability and provenance at the site during glacial periods and the Holocene through the Sr-Nd isotopic composition of ice core dust and potential source areas (PSA). We provide new isotopic data on dust sources from Victoria Land such as regoliths, glacial drifts, aeolian sands and beach de...

  17. Transjugular liver biopsy: histological diagnosis success comparing the trucut to the modified aspiration Ross needle Biopsia hepática transjugular: comparação do sucesso diagnóstico histológico entre as agulhas trucut e a aspirativa modificada de Ross

    Directory of Open Access Journals (Sweden)

    Antonio Carlos Maciel

    2003-06-01

    Full Text Available BACKGROUND: Transjugular liver biopsy is an alternative procedure for patients who present contraindications to standard percutaneous procedure. AIM: To compare the rate of histological diagnosis obtained on transjugular liver biopsy with an automated trucut needle and with a modified Ross needle. PATIENTS / METHOD: Eighty-five patients with suspicion of chronic liver diseases and presenting contraindications for percutaneous liver biopsy (coagulopathy, massive ascites, morbid obesity, or chronic renal problems were submitted to 89 transjugular liver biopsies between March 1994 and April 2001 at ''Hospital São José, Irmandade da Santa Casa de Misercórdia'', Porto Alegre, RS, Brazil. Thirty-five patients underwent 36 biopsies with an automated trucut needle, and 50 patients underwent 53 biopsies with a modified Ross needle. RESULTS: Histological diagnosis was reached in 32/35 subjects submitted to transjugular liver biopsy with the trucut needle (91% and in 35/50 (70% submitted to biopsy with the modified Ross needle. Specimens obtained with the trucut needle were significantly larger and less fragmented than those obtained with the Ross needle. CONCLUSION: Transjugular liver biopsy with the automated trucut needle allowed a higher rate of histological diagnosis when compared to the modified Ross needle in patients with suspicion of chronic liver diseases.RACIONAL: A biopsia hepática transjugular é um procedimento alternativo para pacientes que apresentam contra-indicações ao procedimento padrão (percutâneo. OBJETIVO: Comparar o índice de diagnóstico obtido por meio da biopsia hepática transjugular utilizando uma agulha automatizada trucut e uma agulha Ross modificada. MÉTODOS: Oitenta e cinco pacientes com suspeita de doenças hepáticas crônicas e apresentando contra-indicações para biopsia hepática percutânea (coagulopatia, ascite maciça, obesidade mórbida ou problemas renais crônicos foram submetidos a 89 biopsias hep

  18. Intra-seasonal variation in foraging behavior among Adélie penguins (Pygocelis adeliae) breeding at Cape Hallett, Ross Sea, Antarctica

    Science.gov (United States)

    Lyver, P.O.B.; MacLeod, C.J.; Ballard, G.; Karl, B.J.; Barton, K.J.; Adams, J.; Ainley, D.G.; Wilson, P.R.

    2011-01-01

    We investigated intra-seasonal variation in foraging behavior of chick-rearing Adélie penguins, Pygoscelis adeliae, during two consecutive summers at Cape Hallett, northwestern Ross Sea. Although foraging behavior of this species has been extensively studied throughout the broad continental shelf region of the Ross Sea, this is the first study to report foraging behaviors and habitat affiliations among birds occupying continental slope waters. Continental slope habitat supports the greatest abundances of this species throughout its range, but we lack information about how intra-specific competition for prey might affect foraging and at-sea distribution and how these attributes compare with previous Ross Sea studies. Foraging trips increased in both distance and duration as breeding advanced from guard to crèche stage, but foraging dive depth, dive rates, and vertical dive distances travelled per hour decreased. Consistent with previous studies within slope habitats elsewhere in Antarctic waters, Antarctic krill (Euphausia superba) dominated chick meal composition, but fish increased four-fold from guard to crèche stages. Foraging-, focal-, and core areas all doubled during the crèche stage as individuals shifted distribution in a southeasterly direction away from the coast while simultaneously becoming more widely dispersed (i.e., less spatial overlap among individuals). Intra-specific competition for prey among Adélie penguins appears to influence foraging behavior of this species, even in food webs dominated by Antarctic krill.

  19. New evidence for endemic circulation of Ross River virus in the Pacific Islands and the potential for emergence.

    Science.gov (United States)

    Lau, Colleen; Aubry, Maite; Musso, Didier; Teissier, Anita; Paulous, Sylvie; Desprès, Philippe; de-Lamballerie, Xavier; Pastorino, Boris; Cao-Lormeau, Van-Mai; Weinstein, Philip

    2017-04-01

    An epidemic of Ross River virus (RRV) occurred in the South Pacific in 1979-1980, but RRV has not been thought to occur endemically outside Australia and Papua New Guinea. A seroprevalence study was conducted to determine whether RRV has circulated in American Samoa since 1980. RRV ELISA IgG was performed on 200 serum samples collected in American Samoa in 2010; seroneutralization tests were performed on 60 representative samples. Of 196 available ELISA IgG results, 145 (74%, 95% confidence interval 67-80%) were seropositive. Of the 60 samples subjected to seroneutralization testing, none of the 15 ELISA IgG-negative and 16 of the 45 ELISA IgG-positive samples neutralized RRV. ELISA IgG seroprevalence was higher in persons born before/during the 1979-1980 RRV outbreak (78.3%), but was also high (63.0%) in people born after the outbreak who had lived their entire lives in American Samoa. This study provides serological evidence that RRV circulation is likely to have occurred in American Samoa after 1980. Considering there are no marsupials in American Samoa, this finding implies that other species are capable of acting as reservoir hosts and indicates the potential for RRV to circulate in a much wider area than those currently recognized. Copyright © 2017 The Author(s). Published by Elsevier Ltd.. All rights reserved.

  20. The Influence of Nutrition, Sex and Slaughter Age on Characteristics of Pectoralis Major Muscle at Broiler Chickens Ross-308

    Directory of Open Access Journals (Sweden)

    Adela Marcu

    2014-05-01

    Full Text Available In this paper was studied the effect of dietary energy and protein levels on characteristics of pectoralis major (P. major muscle at broiler chickens, which were sacrificed at 35 and 42 days old. The genetic material was represented by broiler chickens that belonged to the „Ross-308” hybrid, with two groups (LC-control group and LE experimental group. During the growth periods (starter, growing and finishing they have received compound feed ad libitum, with different energy and protein levels (LC-conforming to recommendations of Aviagen Company; LE-higher with 10%. After slaughter, from each group were sampled breast muscles (five per sex and for P. major were determined: the weight, pH value, the thickness of myocytes (fiber diameter, cross-sectional area of fibers. At the LE group, high levels of dietary proteins and energy has significantly influenced pH value and the thickness of myocytes in the P. major muscle, as compared with LC. The sex and slaughter age have significantly influenced the fibers diameter from P. major muscle, that were thicker at female chickens, as compared with male chickens and at 42 days age vs. 35 days.

  1. Short-term under-ice variability of prokaryotic plankton communities in coastal Antarctic waters (Cape Hallett, Ross Sea)

    Science.gov (United States)

    Celussi, Mauro; Paoli, Alessandro; Crevatin, Erica; Bergamasco, Andrea; Margiotta, Francesca; Saggiomo, Vincenzo; Umani, Serena Fonda; Del Negro, Paola

    2009-03-01

    During the 2006 Italian Antarctic expedition a diel sampling was performed close to Cape Hallett (Ross Sea) during the Austral summer. Under-ice seawater samples (˜4 m) were collected every 2 h for 28 h in order to estimate prokaryotic processes' variability and community structure dynamics. Prokaryotic and viral abundances, exoenzymatic activities (β-glucosidase, chitinase, lipase, alkaline phosphatase and leucine aminopeptidase), prokaryotic carbon production ( 3H-leucine incorporation) and community structure (Denaturing Gradient Gel Electrophoresis - DGGE fingerprints) were analysed. Results showed that the diel variability of the prokaryotic activity followed a variation in salinity, probably as a consequence of the periodical thawing of sea ice (driven by solar radiation and air temperature cycles), while negligible variation in viral and prokaryotic abundances occurred. The Bacterial and Archaeal community structures underwent an Operational Taxonomic Units (OTUs) temporal shift from the beginning to the end of the sampling, while Flavobacteria-specific primers highlighted high variations in this group possibly related to sea ice melting and substrate release.

  2. Chemical evidence of the changes of the Antarctic Bottom Water ventilation in the western Ross Sea between 1997 and 2003

    Science.gov (United States)

    Rivaro, Paola; Massolo, Serena; Bergamasco, Andrea; Castagno, Pasquale; Budillon, Giorgio

    2010-05-01

    Data from three Italian CLIMA project cruises between 1997 and 2003 were used to obtain sections of the hydrographic and chemical properties of the main water masses across the shelf break off Cape Adare (western Ross Sea, Antarctica). Dissolved oxygen, nitrate and phosphate data were combined on the basis of the Redfield ratio to obtain the quasi-conservative tracers NO (9[NO 3]+[O 2]), PO (135[PO 4]+[O 2]) and phosphate star PO4* ( PO4*=[PO 4]+[O 2]/175-1.95). In 1997 and 2003 the presence of the High Salinity Shelf Water at the bottom depth near the sill was traced by both physical and chemical measurements. In 2001 the Modified Shelf Water, characterized by warmer temperature and by a lower dissolved oxygen content than High Salinity Shelf Water, was observed at the shelf edge. The distribution of the chemical tracers together with the hydrographic observations showed recently formed Antarctic Bottom Water on the continental slope during all of the cruises. These observations were confirmed by the extended optimum multiparameter analysis. The calculated thickness of the new Antarctic Bottom Water, as well as the tracer content, were variable in time and in space. The estimated volume of the new Antarctic Bottom Water and the export of dissolved oxygen and nutrient associated with the overflowing water were different over the examined period. In particular, a lower (˜55%) export was evidenced in 2001 compared to 1997.

  3. THE INFLUENCE OF BEE POLLEN ON THE MEAT CHEMICAL COMPOSITION FOR BROILER´S ROSS 308 MUSCLES

    Directory of Open Access Journals (Sweden)

    Juraj Čuboň

    2013-02-01

    Full Text Available The objective ofthe presentstudy was to evaluate the meat chemical composition of breast and thigh muscles for boiler Ross 308after additionthe bee pollenas nutritional supplement to feed mixturein a dose (500 mg.kg-1 and 1500 mg.kg-1 to experimental groups (E1, E2 respectively.The fattening duration was 42days.At the end of the experiment,the results showthat the water contentin experimentalgroups (E1,E2 was higher than control and there were no significant differences (P≤0. 05among the groups,the protein content was higher in the control group than experimental groups (E1,E2 and there were no significant differences(P≤0.05 among the groups.The breast and thigh fat contents in control (2.04%,13.20%washigherthan (E1group (1.61%,12.91% and (E2 group (1.94%,12.25% andthereweresignificant differences (P≥0.05 between control group and experimental (E1, E2 groupsand therewere no significant differences (P≤0.05 in thigh samples.The energy value was higher in the control group than experimental (E1, E2 and there were significant differences (P≥0.05 between control and experimental group(E1 in breast sample.

  4. Glacial-interglacial sea ice proxies from the Antarctic Peninsula using the James Ross Island ice core.

    Science.gov (United States)

    Benton, A. K.; Mulvaney, R.; Triest, J.; Abram, N.

    2014-12-01

    Ice core records from Antarctica have shown promise as highly-resolved indicators of regional sea ice change, but to date semi-quantified reconstructions do not extend back more than ~150 years. In this study the chemical composition of the James Ross Island ice core is presented as a potential sea ice proxy record spanning the full Holocene and into the last glacial interval. A CFA-TE method was used to analyse the chemical composition of the entire 363.9m core including final 5m which contains evidence of glacial age ice. MSA- and major anions were measured at 4cm effective resolution, along with trace elements Na, Ca, K, Mg, Mn, H2O2, NO3, total conductivity and dust at <0.5cm effective resolution. Seasonal signals from H2O2 in the upper 50m of the core support the use of non sea salt-SO42- for determining seasonality in deeper sections. This multi-proxy analysis of the oldest ice core to date from the Antarctic Peninsula region allows the concurrent interpretation of sea ice changes and their environmental drivers. The potential dual influence of previous winter sea ice extent and air pathway source region on MSA concentrations in the core are interpreted with use of Na as a winter maximum indicator and Ca and dust signal strength showing changes in dust flux indicating potential source region variation.

  5. Projecting the impact of climate change on the transmission of Ross River virus: methodological challenges and research needs.

    Science.gov (United States)

    Yu, W; Dale, P; Turner, L; Tong, S

    2014-10-01

    Ross River virus (RRV) is the most common vector-borne disease in Australia. It is vitally important to make appropriate projections on the future spread of RRV under various climate change scenarios because such information is essential for policy-makers to identify vulnerable communities and to better manage RRV epidemics. However, there are many methodological challenges in projecting the impact of climate change on the transmission of RRV disease. This study critically examined the methodological issues and proposed possible solutions. A literature search was conducted between January and October 2012, using the electronic databases Medline, Web of Science and PubMed. Nineteen relevant papers were identified. These studies demonstrate that key challenges for projecting future climate change on RRV disease include: (1) a complex ecology (e.g. many mosquito vectors, immunity, heterogeneous in both time and space); (2) unclear interactions between social and environmental factors; and (3) uncertainty in climate change modelling and socioeconomic development scenarios. Future risk assessments of climate change will ultimately need to better understand the ecology of RRV disease and to integrate climate change scenarios with local socioeconomic and environmental factors, in order to develop effective adaptation strategies to prevent or reduce RRV transmission.

  6. Inactivation of dengue, chikungunya, and Ross River viruses in platelet concentrates after treatment with ultraviolet C light.

    Science.gov (United States)

    Faddy, Helen M; Fryk, Jesse J; Prow, Natalie A; Watterson, Daniel; Young, Paul R; Hall, Roy A; Tolksdorf, Frank; Sumian, Chryslain; Gravemann, Ute; Seltsam, Axel; Marks, Denese C

    2016-06-01

    Arboviruses, including dengue (DENV 1-4), chikungunya (CHIKV), and Ross River (RRV), are emerging viruses that are a risk for transfusion safety globally. An approach for managing this risk is pathogen inactivation, such as the THERAFLEX UV-Platelets system. We investigated the ability of this system to inactivate the above mentioned arboviruses. DENV 1-4, CHIKV, or RRV were spiked into buffy coat (BC)-derived platelet (PLT) concentrates in additive solution and treated with the THERAFLEX UV-Platelets system at the following doses: 0.05, 0.1, 0.15, and 0.2 J/cm(2) (standard dose). Pre- and posttreatment samples were taken for each dose, and the level of viral infectivity was determined. At the standard ultraviolet C (UVC) dose (0.2 J/cm(2) ), viral inactivation of at least 4.43, 6.34, and 5.13 log or more, was observed for DENV 1-4, CHIKV, and RRV, respectively. A dose dependency in viral inactivation was observed with increasing UVC doses. Our study has shown that DENV, CHIKV, and RRV, spiked into BC-derived PLT concentrates, were inactivated by the THERAFLEX UV-Platelets system to the limit of detection of our assay, suggesting that this system could contribute to the safety of PLT concentrates with respect to these emerging arboviruses. © 2016 AABB.

  7. Micropropagation and germplasm conservation of Central Park Splendor Chinese elm (Ulmus parvifolia Jacq. 'A/Ross Central Park') trees.

    Science.gov (United States)

    Thakur, R C; Karnosky, D F

    2007-08-01

    Micropropagation offers opportunities to propagate, preserve and ship tree germplasm. It also reduces the risk of moving pathogens and insects with the germplasm due to built-in pathogen detection capabilities of aseptic cultures. For the past few decades, our laboratory has been involved in a project to preserve and restore a large, cold hardy, and historically important Chinese elm (Ulmus parvifolia Jacq. 'A/Ross Central Park') tree. Here we present three simple and efficient systems for its micropropagation, germplasm conservation and distribution: (1) in vitro plant formation from meristematic nodules (MNs), (2) plantlet generation from axillary buds, and (3) in vitro rooting of micro-cuttings from 20-years-old hedged stock plants. Newly flushed nodal segments were used as explants. WPM with 0.5 mg/l BA was found to be the best medium for meristematic shoot development and WPM supplemented with 2.0 mg/l 4-CPPU and 0.5 mg/l TDZ was best for meristematic nodule formation. Rhizogenesis of regenerants and micro-cuttings was best achieved on WPM with 1.0 mg/l NAA and 2% sucrose. Rooted plants were readily acclimatized to the greenhouse ambient environment and continued to grow well under greenhouse conditions. The survival rate of acclimatized plantlets under ex vitro conditions was 100% after 4 weeks. Plants looked healthy with no visually detectable phenotypic variation based on observation of about 1,000 plants. Cycling of shoot explants and MNs through repetitive cultures was effective in scaling-up propagules.

  8. Summer Epiphytic Diatoms from Terra Nova Bay and Cape Evans (Ross Sea, Antarctica) - A Synthesis and Final Conclusions

    Science.gov (United States)

    Majewska, Roksana; Convey, Peter; De Stefano, Mario

    2016-01-01

    Despite recent advances in polar marine biology and related fields, many aspects of the ecological interactions that are crucial for the functioning of Antarctic shallow water habitats remain poorly understood. Although epiphytic diatoms play an essential role in the Antarctic marine food web, basic information regarding their ecology, biodiversity and biogeography is largely unavailable. Here, we synthesise studies on Ross Sea epiphytic diatoms collected during 11 summer Antarctic expeditions between the years 1989/90 and 2011/12, presenting a full list of diatom taxa associated with three macroalgal species (Iridaea cordata, Phyllophora antarctica, and Plocamium cartilagineum) and their epiphytic sessile fauna. Diatom communities found during the three summer months at various depths and sampling stations differed significantly in terms of species composition, growth form structure and abundances. Densities ranged from 21 to >8000 cells mm-2, and were significantly higher on the surface of epiphytic micro-fauna than on any of the macroalgal species examined. Generally, host organisms characterized by higher morphological heterogeneity (sessile microfauna, ramified Plocamium) supported richer diatom communities than those with more uniform surfaces (Iridaea). Differences between epiphytic communities associated with different macroalgae were reflected better in species composition than in growth form structure. The latter changed significantly with season, which was related strongly to the changing ice conditions. A general trend towards an increasing number of erect forms in deeper waters and tube-dwelling diatoms in the shallowest sites (2–5 m) was also observed. This study explores further important and largely previously unknown aspects of relationships and interactions between Antarctic epiphytic diatoms and their micro- and macro-environments. PMID:27078637

  9. Summer Epiphytic Diatoms from Terra Nova Bay and Cape Evans (Ross Sea, Antarctica)--A Synthesis and Final Conclusions.

    Science.gov (United States)

    Majewska, Roksana; Convey, Peter; De Stefano, Mario

    2016-01-01

    Despite recent advances in polar marine biology and related fields, many aspects of the ecological interactions that are crucial for the functioning of Antarctic shallow water habitats remain poorly understood. Although epiphytic diatoms play an essential role in the Antarctic marine food web, basic information regarding their ecology, biodiversity and biogeography is largely unavailable. Here, we synthesise studies on Ross Sea epiphytic diatoms collected during 11 summer Antarctic expeditions between the years 1989/90 and 2011/12, presenting a full list of diatom taxa associated with three macroalgal species (Iridaea cordata, Phyllophora antarctica, and Plocamium cartilagineum) and their epiphytic sessile fauna. Diatom communities found during the three summer months at various depths and sampling stations differed significantly in terms of species composition, growth form structure and abundances. Densities ranged from 21 to >8000 cells mm-2, and were significantly higher on the surface of epiphytic micro-fauna than on any of the macroalgal species examined. Generally, host organisms characterized by higher morphological heterogeneity (sessile microfauna, ramified Plocamium) supported richer diatom communities than those with more uniform surfaces (Iridaea). Differences between epiphytic communities associated with different macroalgae were reflected better in species composition than in growth form structure. The latter changed significantly with season, which was related strongly to the changing ice conditions. A general trend towards an increasing number of erect forms in deeper waters and tube-dwelling diatoms in the shallowest sites (2-5 m) was also observed. This study explores further important and largely previously unknown aspects of relationships and interactions between Antarctic epiphytic diatoms and their micro- and macro-environments.

  10. Osteoblasts from osteoarthritis patients show enhanced susceptibility to Ross River virus infection associated with delayed type I interferon responses.

    Science.gov (United States)

    Chen, Weiqiang; Foo, Suan-Sin; Li, Rachel W; Smith, Paul N; Mahalingam, Suresh

    2014-11-19

    Arthritogenic alphaviruses such as Ross River virus (RRV) and chikungunya virus (CHIKV) have caused widespread outbreaks of chronic polyarthritis. The inflammatory responses in alphavirus-induced arthritis and osteoarthritis (OA) share many similar features, which suggests the possibility of exacerbated alphavirus-induced bone pathology in individuals with pre-existing OA. Here, we investigated the susceptibility of osteoblasts (OBs) from OA patients to RRV infection and dissected the immune mechanisms elicited from infection. Primary hOBs obtained from trabecular bone of healthy donors and OA patients were infected with RRV. Infectivity and viral replication were determined using flow cytometry and plaque assay, respectively. Real-time PCR was performed to determine expression kinetics of type I interferon (IFN)-related immune mediators and osteotropic factors. OA hOBs showed enhanced RRV infectivity and replication during infection, which was associated with delayed induction of IFN-β and RIG-I expression. Enhanced susceptibility of OA hOBs to RRV was associated with a more pronounced increase in RANKL/OPG ratio and expression of osteotropic factors (IL-6, IL-1β, TNF-α and CCL2) in comparison to RRV-infected healthy hOBs. Delayed activation of type I IFN-signalling pathway may have contributed to enhanced susceptibility to RRV infection in hOBs from OA patients. RRV-induced increases in RANKL/OPG ratio and expression of osteotropic factors that favour bone resorption, which may be exacerbated during osteoarthritis. This study provides the novel insight that osteoarthritis may be a risk factor for exacerbated arthritogenic alphaviral infection.

  11. Corticosterone in relation to body mass in Adelie penguins (Pygoscelis adeliae) affected by unusual sea ice conditions at Ross Island, Antarctica.

    Science.gov (United States)

    Cockrem, J F; Potter, M A; Candy, E J

    2006-12-01

    Penguins naturally fast each year during breeding and again whilst moulting, and may lose more than 40% of body mass during a fast. Fasting in emperor (Aptenodytes forsteri) and king (Aptenodytes patagonicus) penguins has been divided into three phases, with phase III characterised by an increased rate of body mass loss, increased plasma corticosterone concentrations, and a change in behaviour leading to abandonment of the breeding attempt and return to sea to feed. Initial corticosterone concentrations and corticosterone responses to a handling stressor were measured in the current study to determine if they increase during phase III of fasting in Adelie penguins (Pygoscelis adeliae). The study was conducted in 2001 at the northern Cape Bird colony on Ross Island, Antarctica. Penguin breeding on Ross Island was disrupted in the 2001-2002 summer by a large iceberg (B15A) which stopped the normal movement of sea ice in the Ross Sea. Penguins departing from the Cape Bird colony were lighter than returning or incubating birds (3.39+/-0.10cf. 4.16+/-0.06 and 4.07+/-0.08kg). It is likely that the departing birds were males that had been lighter than normal when they arrived at the colony. Initial plasma corticosterone concentrations were higher in departing than returning or incubating penguins (6.89+/-1.69cf. 2.36+/-0.42 and 1.08+/-0.19ng/ml). Corticosterone responses to handling were also greater in departing penguins. Initial plasma corticosterone, concentrations at 30min and total and corrected integrated corticosterone responses were inversely related to body mass in departing penguins, whereas there were no relationships in arriving penguins. beta-hydroxybutyrate and uric acid concentrations were consistent with departing birds having entered phase III of fasting. The results indicate that corticosterone and corticosterone responses are elevated in phase III of fasting in the Adelie penguin.

  12. EVALUACIÓN DEL COMPORTAMIENTO PRODUCTIVO DE LAS LÍNEAS DE POLLOS DE ENGORDE COBB 500 y ROSS 308 AVALIAÇÃO DO DESEMPENHO PRODUTIVO DAS LINHAS DE FRANGOS DE CORTE COBB 500 E ROSS 308 PERFORMANCE EVALUATION OF POULTRY PRODUCTION ON THE LINES OF BROILERS COBB 500 AND ROSS 308

    Directory of Open Access Journals (Sweden)

    JUAN PABLO ROSERO

    2012-06-01

    Full Text Available Con el objetivo de identificar que líneas comerciales de pollos de engorde se comportan mejor productivamente en trópico bajo, se evaluaron las líneas avícolas Ross 308 y Cobb 500. Para ello se utilizaron 160 aves, 80 por cada estirpe y 40 por cada sexo, de un día de edad para evaluar sus parámetros productivos, implementando un diseño completamente al azar con cuatro tratamientos, cuatro repeticiones por tratamiento y 10 aves por repetición, con el fin de determinar el comportamiento entre las variables consumo de alimento, ganancia de peso y conversión alimenticia, para las etapas de iniciación y finalización. A los datos experimentales, se efectuó un análisis de varianza y prueba múltiple de Duncan. Para el análisis económico se utilizo el método de presupuestos parciales. Para la variable consumo de alimento, en la etapa iniciación se encontraron diferencias estadísticas (Pr>F= 0,05 entre tratamientos, contrario a la ganancia de peso y conversión alimenticia, en donde no se reportan diferencias estadísticas (Pr>F= 0,05. En cuanto a la etapa de finalización para consumo de alimento y ganancia de peso se presentaron diferencias estadísticas (Pr>F= 0,05, contrario a conversión alimenticia, donde no se presentaron diferencias. En términos económicos, se determinó que el tratamiento T1 fue el más eficiente.A fim de identificar quais linhas comerciais de frangos de corte se comportar melhor na produtividade tropical baixa, foram avaliadas as linhas de aves Ross 308 e Cobb 500. Para isso, foram utilizadas 160 aves, 80 por corrida e 40 para cada sexo, de um dia de idade para avaliar os parâmetros produtivos, implementação de um delineamento inteiramente casualizado, com quatro tratamentos, quatro repetições por tratamento e 10 aves por repetição, a fim de determinar o comportamento entre as variáveis consumo de ração, ganho de peso e conversão alimentar (g para as fases de iniciação e conclusão. Aos dados

  13. Thinking through war: the social thought of Richard T. Ely, John R. Commons, and Edward A. Ross during the First World War.

    Science.gov (United States)

    Herzberg, D L

    2001-01-01

    This paper examines the social thought of University of Wisconsin professors Richard T. Ely, John R. Commons, and Edward A. Ross during World War I. Like many of their fellow scholars, these three were actively involved in the pro-war effort. Although their support for the war was strongly conditioned by personal and occupational considerations, the impact of their wartime service was not restricted to those realms. Their social thought, which they impressed into service explaining and justifying the war, was itself altered in subtle and sometimes surprising ways by the forceful positions they took on the political, economic, and racial significance of the conflict. Copyright 2001 John Wiley & Sons, Inc.

  14. Vulnerabilidad y transmisión del sentido en la Bioética del Cuidado : aportaciones de Gabriel Marcel, Viktor Frankl y Elisabeth Kübler-Ross

    OpenAIRE

    Ruiz Gros, Sandra

    2013-01-01

    El objetivo de esta tesis doctoral es el análisis de la vulnerabilidad del ser humano en la enfermedad y ante el final de la vida. En estas situaciones, la transmisión del sentido es un problema ético y antropológico. Aquí analizo esa transmisión como acompañamiento, escucha activa, presencia y contacto. Para desarrollar esta investigación he acudido a tres autores que marcan el paso del siglo XIX al XX y de éste al XXI: Gabriel Marcel, Viktor Frankl y Elisabeth Kübler-Ross. Fueron testigos ...

  15. Shifts in Ross Sea food web structure as indicated by δ15N and δ13C values of fossil Antarctic seals

    Science.gov (United States)

    Leopold, A.; Brault, E.; McMahon, K.

    2013-12-01

    As climate change continues to mount, there is a growing need for understanding its effects on biological-physical interactions of marine ecosystems. Assessing the effects of anthropogenic activities on the coastal marine ecosystem involves understanding the underlying mechanisms driving these changes as well as establishing baselines of the natural system. Preliminary findings have indicated shifts in bulk carbon (C) and nitrogen (N) isotopic values of southern elephant seal (Mirounga leonina) samples, collected in the Dry Valleys of Antarctica in the Ross Sea region, over approximately the last 7,000 years. These shifts could result from 1) seals changing their foraging location and/or diet over this time, 2) climate change-induced shifts in the biogeochemistry at the base of the food web, or 3) some combination of both processes. We explored the patterns of long-term change in Ross Sea food web structure by examining the stable isotope values of three top predators in this system, Weddell seals (Leptonychotes weddellii), leopard seals (Hydrurga leptonyx), and crabeater seals (Lobodon carcinophagus). Fossil seal samples were collected in the Dry Valleys during the austral summer of 2012/13 and then analyzed for bulk C and N isotopes via an elemental analyzer/isotope-ratio mass spectrometer (EA/IRMS). Our initial findings indicate that C isotopic values of fossil seal samples from Weddell, leopard, and crabeater seals were more enriched than isotopic values of modern seals of the same species (e.g., δ13C = -22.79 × 0.92 ‰ and -26.71 × 0.50 ‰ for fossil and modern crabeater seals, respectively). Given the relatively consistent diet of crabeater seals, these findings suggest a shift in baseline food web structure occurred over the last 10,000 years, either through changes in foraging location or local shifts in biogeochemistry. For all species, N isotopic values are widely variable (e.g., 7.28 to 16.0 δ15N ‰ for the Weddell seal), which may be a result of

  16. Un aporte de Alf Ross a la estrategia de la Dóctrina Jurídica. (Hacia una mejor estrategia de la Verificación)

    OpenAIRE

    Miguel Ángel CIURO CALDANI

    2015-01-01

    Dentro de la consideración atribuida a la veri¿cación por Alf Ross y por el integrativismo tridimensionalista trialista se atiende en especial a la importancia que le corresponde en la estrategia jurídica en la doctrina y el pensamiento jurídico en general. Se desarrollan las perspectivas de la estrategia en sí misma y de las dimensiones de realidad social, normas y valores con las que el trialismo construye el objeto jurídico. En ese marco la...

  17. Active layer monitoring at CALM-S site near J.G.Mendel Station, James Ross Island, eastern Antarctic Peninsula.

    Science.gov (United States)

    Hrbáček, Filip; Kňažková, Michaela; Nývlt, Daniel; Láska, Kamil; Mueller, Carsten W; Ondruch, Jakub

    2017-12-01

    The Circumpolar Active Layer Monitoring - South (CALM-S) site was established in February 2014 on James Ross Island as the first CALM-S site in the eastern Antarctic Peninsula region. The site, located near Johann Gregor Mendel Station, is labelled CALM-S JGM. The grid area is gently sloped (<3°) and has an elevation of between 8 and 11ma.s.l. The lithology of the site consists of the muddy sediments of Holocene marine terrace and clayey-sandy Cretaceous sedimentary rocks, which significantly affect the texture, moisture content, and physical parameters of the ground within the grid. Our objective was to study seasonal and interannual variability of the active layer depth and thermal regime at the CALM-S site, and at two ground temperature measurement profiles, AWS-JGM and AWS-CALM, located in the grid. The mean air temperature in the period March 2013 to February 2016 reached -7.2°C. The mean ground temperature decreased with depth from -5.3°C to -5.4°C at 5cm, to -5.5°C to -5.9°C at 200cm. Active layer thickness was significantly higher at AWS-CALM and ranged between 86cm (2014/15) and 87cm (2015/16), while at AWS-JGM it reached only 51cm (2013/14) to 65cm (2015/16). The mean probed active layer depth increased from 66.4cm in 2013/14 to 78.0cm in 2014/15. Large differences were observed when comparing the minimum (51cm to 59cm) and maximum (100cm to 113cm) probed depths. The distribution of the active layer depth and differences in the thermal regime of the uppermost layer of permafrost at CALM-S JGM clearly show the effect of different lithological properties on the two lithologically distinct parts of the grid. Copyright © 2017 Elsevier B.V. All rights reserved.

  18. Microseismicity along major Ross Ice Shelf rift resulting from thermal contraction of the near-surface firn layer

    Science.gov (United States)

    Olinger, S.; Wiens, D.; Aster, R. C.; Bromirski, P. D.; Gerstoft, P.; Nyblade, A.; Stephen, R. A.

    2017-12-01

    Seismicity within ice shelves arises from a variety of sources, including calving, rifting, and movement along internal discontinuities. In this study, we identify and locate cryoseisms in the Ross Ice Shelf (RIS) to better understand ice shelf internal stress and deformation. We use data from a two-year 34-station deployment of broadband seismographs operational from December 2014 - November 2016. Two lines of seismographs intersect near 79Sº, 180º close to a large rift, and cryoseisms were recorded by up to 10 seismographs within 40 km of the rift tip. We identified 3600 events from 2015 and grouped them by quality based on the number of stations recording and signal-to-noise ratio. The events show a long-period character compared to similar magnitude tectonic earthquakes, with peak amplitudes at 1-4 Hz and P, S, longitudinal, and surface wave arrivals. Cross correlation analysis shows that the events cannot be divided into a small number of repeating event clusters with identical waveforms. 262 A-quality events were located with a least-squares algorithm using P and S arrivals, and the resulting locations show strong spatial correlation with the rift, with events distributed along the rift rather than concentrated at the tip or any other specific feature. The events do not show teleseismic triggering, and did not occur with increased frequency following the Illapel earthquake (8.3 Mw) or subsequent tsunami. Instead, we note a concentration of activity during the winter months, with several days exhibiting particularly high seismicity rates. We compare the full catalog of events with temperature data from the Antarctic Weather Stations (Lazzara et al, 2012) and find that the largest swarms occur during the most rapid periods of seasonal temperature decline. Internal stress in ice floes and shelves is known to vary with air temperature; as temperature drops, the upper layer of ice thermally contracts, causing near-surface extensional stress to accumulate. We

  19. Predicting responses of the Adélie penguin population of Edmonson Point to future sea ice changes in the Ross Sea

    Directory of Open Access Journals (Sweden)

    Tosca eBallerini

    2015-02-01

    Full Text Available Atmosphere-Ocean General Circulation Models (AOGCMs predict changes in the sea ice environment and in atmospheric precipitations over larger areas of Antarctica. These changes are expected to affect the population dynamics of seabirds and marine mammals, but the extent of this influence is not clear. We investigated the future population trajectories of the colony of Adélie penguins at Edmonson Point, in the Ross Sea, from 2010 to 2100. To do so, we incorporated the relationship between sea ice and demographic parameters of the studied colony into a matrix population model. Specifically, we used sea ice projections from AOGCMs and a proxy for snowfall precipitation. Simulations of population persistence under future climate change scenarios showed that a reduction in sea ice extent and an increase in precipitation events during the breeding season will drive the population to extinction. However, the population growth rate estimated by the model was lower than the population growth rate observed during the last decades, suggesting that recruits from other colonies maintain the observed population dynamics at Edmonson Point. This local ‘rescue’ effect is consistent with a metapopulation dynamic for Adélie penguins in the Ross Sea, in which neighboring colonies might exhibit contrasting population trends and different density-dependent effects. In the hypothesis that connectivity with larger source colonies or that local recruitment would decrease, the sink colony at Edmonson Point is predicted to disappear.

  20. A seasonal study of dissolved cobalt in the Ross Sea, Antarctica: micronutrient behavior, absence of scavenging, and relationships with Zn, Cd, and P

    Directory of Open Access Journals (Sweden)

    M. A. Saito

    2010-12-01

    Full Text Available We report the distribution of cobalt (Co in the Ross Sea polynya during austral summer 2005–2006 and the following austral spring 2006. The vertical distribution of total dissolved Co (dCo was similar to soluble reactive phosphate (PO43−, with dCo and PO43− showing a significant correlation throughout the water column (r2 = 0.87, 164 samples. A strong seasonal signal for dCo was observed, with most spring samples having concentrations ranging from ~45–85 pM, whereas summer dCo values were depleted below these levels by biological activity. Surface transect data from the summer cruise revealed concentrations at the low range of this seasonal variability (~30 pM dCo, with concentrations as low as 20 pM observed in some regions where PO43− was depleted to ~0.1 μM. Both complexed Co, defined as the fraction of dCo bound by strong organic ligands, and labile Co, defined as the fraction of dCo not bound by these ligands, were typically observed in significant concentrations throughout the water column. This contrasts the depletion of labile Co observed in the euphotic zone of other ocean regions, suggesting a much higher bioavailability for Co in the Ross Sea. An ecological stoichiometry of 37.6 μmol Co:mol−1 PO43− calculated from dissolved concentrations was similar to values observed in the subarctic Pacific, but approximately tenfold lower than values in the Eastern Tropical Pacific and Equatorial Atlantic. The ecological stoichiometries for dissolved Co and Zn suggest a greater overall use of Zn relative to Co in the shallow waters of the Ross Sea, with a Co:PO43−/Zn:PO43− ratio of 1:17. Comparison of these observed stoichiometries with values estimated in culture studies suggests that Zn is a key micronutrient that likely influences phytoplankton diversity in the Ross

  1. The Sinking and Spreading of The Antarctic Deep Ice Shelf Water In The Ross Sea Studied By In Situ Observaions and Numerical Modeling

    Science.gov (United States)

    Rubino, A.; Budillon, G.; Pierini, S.; Spezie, G.

    The sinking and spreading of the Deep Ice Shelf Water (DISW) in the Ross Sea are analyzed using in situ observations and the results of a nonlinear, reduced-gravity, frontal layered numerical "plume" model which is able to simulate the motion of a bottom-arrested current over realistic topography. The model is forced by prescribing the thickness of the DISW vein as well as its density structure at the southern model boundary. The ambient temperature and salinity are imposed using hydrographic data acquired by the Italian PNRA-CLIMA project. In the model water of the quiescent ambient ocean is allowed to entrain in the active deep layer due to a simple param- eterization of turbulent mixing. The importance of forcing the model with a realistic ambient density is demonstrated by carrying out a numerical simulation in which the bottom active layer is forced using an idealized ambient density. In a more realis- tic simulation the path and the density structure of the DISW vein flowing over the Challenger Basin are obtained and are found to be in good agreement with data. The evolution of the deep current beyond the continental shelf is also simulated. It provides useful information on the water flow and mixing in a region of the Ross Sea where the paucity of experimental data does not allow for a detailed description of the deep ocean dynamics.

  2. A quantitative experimental paradigm to optimize construction of rank order lists in the National Resident Matching Program: the ROSS-MOORE approach.

    Science.gov (United States)

    Ross, David A; Moore, Edward Z

    2013-09-01

    As part of the National Resident Matching Program, programs must submit a rank order list of desired applicants. Despite the importance of this process and the numerous manifest limitations with traditional approaches, minimal research has been conducted to examine the accuracy of different ranking strategies. The authors developed the Moore Optimized Ordinal Rank Estimator (MOORE), a novel algorithm for ranking applicants that is based on college sports ranking systems. Because it is not possible to study the Match in vivo, the authors then designed the Recruitment Outcomes Simulation System (ROSS). This program was used to simulate a series of interview seasons and to compare MOORE and traditional approaches under different conditions. The accuracy of traditional ranking and the MOORE approach are equally and adversely affected with higher levels of intrarater variability. However, compared with traditional ranking methods, MOORE produces a more accurate rank order list as interrater variability increases. The present data demonstrate three key findings. First, they provide proof of concept that it is possible to scientifically test the accuracy of different rank methods used in the Match. Second, they show that small amounts of variability can have a significant adverse impact on the accuracy of rank order lists. Finally, they demonstrate that an ordinal approach may lead to a more accurate rank order list in the presence of interviewer bias. The ROSS-MOORE approach offers programs a novel way to optimize the recruitment process and, potentially, to construct a more accurate rank order list.

  3. Sediment property changes in response to the glacial activity on the continental slope to the eastern side of Pennell-Iselin Bank in the Ross Sea, Antarctica

    Science.gov (United States)

    Ha, Sangbeom; Khim, Boo-Keun; Colizza, Ester; Marci, Patrizia; Sagnotti, Leonardo; Caricchi, Chiara; Langone, Leonardo; Giglio, Federico; Kuhn, Gerhard

    2017-04-01

    High latitude marine environments including the Antarctic continental margin have sensitively responded to the climate change, and the Ross Sea is one of these examples. Subglacial marine sedimentary changes have been studied extensively in the continental shelf areas of the Ross Sea to understand the growth and retreat of glaciers in response to the glacial-interglacial changes. However, the continental slope areas of the Ross Sea have not been investigated comparatively less. Thus, in order to comprehend the glaciomarine sedimentation change on the continental slope of the Ross Sea, 3 gravity cores (GC1, GC2, GC3) and 3 box cores (BC1, BC2, BC3) were collected from 3 sites (RS14-C1, C2, C3 by decreasing water depth), respectively, across the continental slope to the eastern side of the Pennell-Iselin Bank during XXIX PNRA (Rosslope II) cruise in 2014. A variety of sedimentological (grain size, magnetic susceptibility, XRF) and geochemical (biogenic opal, total organic carbon, CaCO3, δ13C of organic matter) properties were analyzed along with AMS 14C dating of bulk sediments. All core sediments consist of mostly hemipelagic sandy clay or silty clay with scattered IRD (Ice-Rafted Debris). Sediment color of three cores changes consistently downward from brown to gray with some alternations in core GC1. Based on the basic sediment properties such as sediment color, grain size, and magnetic susceptibility, sediment lithology was decided to divide Unit A and Unit B, both of which were further divided into two subunits. Despite old carbon effect, AMS 14C dates confirm that Unit A belongs to the Holocene and Unit B covers the deglacial to last glacial period at the top of cores. Unit A is characterized by low TOC, low CaCO3, low biogenic opal content and low C/N ratios, whereas Unit B is characterized by high TOC, high CaCO3, moderate to high biogenic opal content and high C/N ratios. Consequently, Unit A represents the modern and interglacial sediments deposited mainly

  4. FECAL EXCRETION OF Salmonella Enteritidis IN BROILER LINES ROSS AND ISA LABEL EXCREÇÃO FECAL de Salmonella Enteritidis EM DUAS LINHAGENS DE FRANGOS DE CORTE

    Directory of Open Access Journals (Sweden)

    Adson Santa Cruz Oliveira

    2007-12-01

    Full Text Available

    The invasive capacity and persistence of this pathogen, crop and ceca in apparently healthy birds of two broiler lines raised without growth promoter antibiotics in ration and originated from eggs inoculated eggshell and in allantoidal cavity with Salmonella Enteritidis. Histological and bacteriological exams from cecal and crop were performed with one, seven, 14 and 21 days of age after hatch in broilers of fast and slow growing rate. Bacterio-logical exams were performed fecal excretion with one, eigth, 22 and 35 days. The Salmonella Enteritidis invaded and colonizated the gastrointestinal tract of the two lines tested, but the the infection reduced with age, and was more persistant in Ross broilers. The results were different for two lines. The pathogen was excreted from just one chick of ISA Label at 22 days of age and four Ross chicks until 35 days of age. In order, Salmonella was detected in 87.5% (14/16 and 38,1% (5/16 of ceca; in 81.2% (13/16 and 12.5% (2/16 of crops; in fast and slow growing rate lines, respectively. In apparent healthy organs, excepted the crop, an inflammatory process with predominance of macrophage and lymphocytes. The slow growing rate line was effective to eliminate bacteria in the organism.

    Key-words: Ceca, crop, fecal excretion, inflammation.

    Avaliaram-se, neste estudo, a capacidade inva-siva, a persistência e a freqüência de excreção fecal da Salmonella Enteritidis em aves aparentemente saudáveis de duas linhagens de frango de corte, criadas sem antibióticos promotores de crescimento na ração e oriundas de ovos inoculados na casca ou na cavidade alantóide com Salmonella Enteritidis fagotipo 4. Realizaram-se exames bacteriológicos das excretas com um, oito, 22 e 35 dias, e histológicos e bacteriológicos do inglúvio e ceco, com um, sete, quatorze e 21 dias pós-eclosão em frangos de crescimento rápido e lento. Salmonella

  5. BASEMAP, Ross COUNTY, USA

    Data.gov (United States)

    Federal Emergency Management Agency, Department of Homeland Security — FEMA Framework Basemap datasets comprise six of the seven FGDC themes of geospatial data that are used by most GIS applications (Note: the seventh framework theme,...

  6. Ad fontes / Kristiina Ross

    Index Scriptorium Estoniae

    Ross, Kristiina, 1955-

    2011-01-01

    Arvustus: Kaju, Katre. Vive hodie, cras vivere serum est: humanistlik-kristlik haridustraditsioon ja Riia pastori Adam Andreae reisialbum (1696–1702). Tartu : Tartu Ülikooli Kirjastus, 2011 (Dissertationes studiorum graecorum et latinorum Universitatis Tartuensis ; 5 )

  7. Soil thermal properties at two different sites on James Ross Island in the period 2012/13

    Science.gov (United States)

    Hrbáček, Filip; Láska, Kamil

    2015-04-01

    James Ross Island (JRI) is the largest island in the eastern part of the Antarctic Peninsula. Ulu Peninsula in the northern part of JRI is considered the largest ice free area in the Maritime Antarctica region. However, information about permafrost on JRI, active layer and its soil properties in general are poorly known. In this study, results of soil thermal measurements at two different sites on Ulu Peninsula are presented between 1 April 2012 and 30 April 2013. The study sites are located (1) on an old Holocene marine terrace (10 m a. s. l.) in the closest vicinity of Johann Gregor Mendel (JGM) Station and (2) on top of a volcanic plateau named Johnson Mesa (340 m a. s. l.) about 4 km south of the JGM Station. The soil temperatures were measured at 30 min interval using platinum resistance thermometers Pt100/8 in two profiles up to 200 cm at JGM Station and 75 cm at Johnson Mesa respectively. Decagon 10HS volumetric water content sensors were installed up 30 cm at Johnson Mesa to 50 cm at JGM Station, while Hukseflux HFP01 soil heat flux sensors were used for direct monitoring of soil physical properties at 2.5 cm depth at both sites. The mean soil temperature varied between -5.7°C at 50 cm and -6.3°C at 5 cm at JGM Station, while that for Johnson Mesa varied between -6.9°C at 50 cm and -7.1°C at 10 cm. Maximum active layer thickness estimated from 0 °C isotherm reached 52 cm at JGM Station and 50 cm at Johnson Mesa respectively which corresponded with maximum observed annual temperature at 50 cm at both sites. The warmest part of both profiles detected at 50 cm depth corresponded with maximum thickness of active layer, estimated from 0°C isotherm, reached 52 cm at JGM Station and 50 cm at Johnson Mesa respectively. Volumetric water content at 5 cm varied around 0.25 m3m-3 at both sites. The slight increase to 0.32 m3m-3 was observed at JGM Station at 50 cm and at Johnson Mesa at 30 cm depth. Soil texture analysis showed distinctly higher share of coarser

  8. Long-term outcomes of the Ross procedure in adults with severe aortic stenosis: single-centre experience with 20 years of follow-up.

    Science.gov (United States)

    Kalfa, David; Mohammadi, Siamak; Kalavrouziotis, Dimitri; Kharroubi, Mounir; Doyle, Daniel; Marzouk, Mohamed; Metras, Jacques; Perron, Jean

    2015-01-01

    The optimal prosthesis option for aortic valve replacement in adult patientsreplacement (n=190; 86%) or the subcoronary technique (n=31; 14%). There were 169 patients with bicuspid valves and 33 redo operations including previous aortic valve repair (n=6) and replacement (n=9) for severe AS. Demographic, preoperative, postoperative and longitudinal clinical and echocardiographic data were collected prospectively. The median and mean follow-up were 11.4 years (range: 1-20.1 years) and 10.1±5.9 years, respectively. The follow-up was complete in all patients. Kaplan-Meier actuarial survival analysis was performed to assess long-term survival, freedom from reoperation for autograft and/or homograft failure and freedom from autograft valve insufficiency. Cox regression risk analysis was performed to identify factors associated with autograft or homograft reoperations. The perioperative mortality rate was 0.9% (n=2). The incidence rate of early reoperation for bleeding was 5.9%. The actuarial survival rate at 10 and 15 years following surgery was 92.1 and 90.5%, respectively. Ross-related reoperations occurred in 21 patients during follow-up: autograft dysfunction (n=9), homograft dysfunction (n=6) and both (n=6). The rate of freedom from Ross-related reoperation was 94.7 and 87.7% at 10 and 15 years, respectively. The rate of freedom from reoperation for autograft failure was 97.6 and 91.5%, the rate of freedom from reoperation for homograft failure was 95.7 and 90.8%, and the rate of freedom from moderate or severe autograft regurgitation was 94.1 and 85.6% at 10 and 15 years, respectively. Compared with available aortic bioprosthetic alternatives in young adults with severe AS, the Ross procedure provides an excellent long-term option for patients with predominant severe AS who seek a durable operation without anticoagulation. © The Author 2014. Published by Oxford University Press on behalf of the European Association for Cardio-Thoracic Surgery. All rights

  9. Programación en Matlab del algoritmo Nicholson-Ross-Weir para la medida de propiedades dieléctricas

    OpenAIRE

    Rodríguez Villar, Manuel

    2013-01-01

    El objetivo de este proyecto fin de carrera es la programación y validación del método de Nicholson-Ross-Weir a partir de simulaciones de los parámetros de dispersión de una guía de onda cargada con un dieléctrico con pérdidas. Las simulaciones se realizarán con el software comercial CST Microwave Studio, el cual nos proporcionará los parámetros de dispersión de la guía de onda cargada con el dieléctrico, mientras que la metodogía de medida se programará con el software Matlab....

  10. Commentary: The Wright Ross Salk Award: Worker Bees and Benefits to the Hive: Service Contributions to the Profession and Society of Pediatric Psychology.

    Science.gov (United States)

    Roberts, Michael C

    2016-11-01

    This article reflects on service contributions upon receiving the 2016 Society of Pediatric Psychology Wright Ross Salk Distinguished Service Award. As the title implies, worker bees make service contributions for the overall benefit of the hive and colony. So too, the scientific discipline, clinical profession, and the Society of Pediatric Psychology need the service contributions of multiple individuals to survive and thrive. Many people have made professional contributions to benefit the field and its organizational home; many more worker bees will volunteer in the future to fill important service roles and sustain the hive. The article discusses lessons learned about service. © The Author 2016. Published by Oxford University Press on behalf of the Society of Pediatric Psychology. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

  11. Quando a morte não tem mais poder: considerações sobre uma obra de Elisabeth Kübler-Ross

    OpenAIRE

    Alves, Carolinne Borges; Dulci, Pedro Lucas

    2014-01-01

    O presente trabalho objetiva analisar as contribuições da obra Sobre a morte e o morrer, de Elisabeth Kübler-Ross, para a problematização da condição humana em pacientes com doenças em fases terminais. Após a realização, durante anos, de seminários sobre a morte e o morrer, a autora desenvolveu com seus alunos uma teoria a respeito dos estágios pessoais que um paciente e seus familiares passam nas circunstâncias de proximidade da morte. Esta abordagem fornece condições de possibilidade não só...

  12. Contraste empírico del modelo de cinco fases de duelo de Kübler-Ross en mujeres con cáncer

    Directory of Open Access Journals (Sweden)

    José Moral de la Rubia

    2015-01-01

    Full Text Available Objetivos. (a Definir cinco escalas unidimensionales que permitan evaluar las cinco fases de duelo del modelo de Kübler-Ross y (b contrastar el modelo secuencial de cinco fases de duelo de Kübler-Ross. Método. Se aplicó la escala de las fases de duelo a una muestra no probabilística de 120 mujeres mexicanas con cáncer. Se usó análisis factorial y de senderos para analizar los datos. Resultados. Se definieron cinco modelos unidimensionales de medida para cada fase de duelo con consistencia interna alta, ajuste a los datos y validez de contenido. El modelo secuencial de cinco fases de duelo presentó un ajuste pobre a los datos. Las fases de duelo fueron independientes del tiempo transcurrido desde el diagnóstico de cáncer. Un modelo no secuencial tuvo buen ajuste a los datos. En este modelo, la negación predijo ira, negociación con un ser superior y depresión; por su parte, la ira predijo depresión; negociación con un ser superior predijo aceptación; y depresión predijo menor aceptación. Conclusión. En estas mujeres mexicanas con cáncer, más que una secuencia de fases en el proceso de duelo, se observaron seis respuestas psicológicas que se interrelacionan entre sí y con la pérdida de la salud. Los 39 ítems seleccionados pueden emplearse como una escala de seis factores y dos dimensiones correlacionadas, afecto positivo (promesas/pacto, fe/esperanza y aceptación y afecto negativo (negación, depresión e ira.

  13. Effects of embryo temperature estimation methodology on the determination of eggshell conductance values in Ross 708 broiler hatching eggs with consideration given to eggshell pigmentation variation.

    Science.gov (United States)

    Olojede, O C; To, S D Filip; McDaniel, C D; Peebles, E D

    2017-09-01

    In a preliminary experiment, the influence of pigment color variation on the temperature readings of the shells (EST) of live embryonated Ross 708 broiler hatching eggs was tested. Prior to set, eggshell color in L*, a*, and b* coordinates were measured at the equator of each egg. Eggshell pigmentation was found not to influence EST from zero through 18 d of incubation (DOI). In a subsequent experiment, EST, as well as air cell (ACT) and cloaca (CLT) temperature measurements were used for the calculation of absolute (GH2O) and specific (gH20) eggshell conductance values for these same types of eggs. An infrared thermometer was used to determine EST from zero to 19 DOI, ACT was measured using a transponder from 12 to 19 DOI, and CLT was determined using a transponder at 4:00 PM at 19 DOI. In the 12 to 19 DOI interval, the values for GH2O as well as for gH20 that were calculated using either EST or ACT were significantly correlated (r ≥ 0.99; P values based on ACT were significantly different from those based on EST. In addition, a significant difference in calculated GH2O and gH20 values resulted when ACT was used rather than when EST or CLT was used in the 10:00 AM to 10:00 PM time period at 19 DOI. In both time periods, GH2O and gH20 values calculated using ACT were significantly lower than those derived using the other 2 types of measurements. These findings suggest that although EST was not affected by shell coloration, because ACT more closely reflects embryo body temperature, it should be used to more accurately calculate the GH2O and gH20 of Ross 708 broiler hatching eggs. © 2017 Poultry Science Association Inc.

  14. Dissolved inorganic carbon, alkalinity, temperature, salinity and other variables collected from discrete sample and profile observations using CTD, Coulometer for DIC measurement and other instruments from JAMES CLARK ROSS in the Indian Ocean, South Atlantic Ocean and Southern Oceans from 2008-12-26 to 2009-01-30 (NODC Accession 0110254)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NCEI Accession 0110254 includes discrete sample and profile data collected from JAMES CLARK ROSS in the Indian Ocean, South Atlantic Ocean and Southern Oceans (>...

  15. Dissolved inorganic carbon, temperature, salinity and other variables collected from discrete sample and profile observations using CTD, bottle and other instruments from JAMES CLARK ROSS in the South Atlantic Ocean, South Pacific Ocean and Southern Oceans from 1992-11-01 to 1992-12-08 (NODC Accession 0115024)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NCEI Accession 0115024 includes chemical, discrete sample, physical and profile data collected from JAMES CLARK ROSS in the South Atlantic Ocean, South Pacific Ocean...

  16. Partial pressure (or fugacity) of carbon dioxide, salinity and other variables collected from Surface underway observations using Carbon dioxide (CO2) gas analyzer, thermosalinographs and other instruments from JAMES CLARK ROSS in the South Atlantic Ocean and Southern Oceans from 2008-01-02 to 2008-02-17 (NCEI Accession 0157284)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NCEI Accession 0157284 includes Surface underway, chemical and physical data collected from JAMES CLARK ROSS in the South Atlantic Ocean and Southern Oceans (> 60...

  17. Partial pressure (or fugacity) of carbon dioxide, salinity and other variables collected from Surface underway observations using Barometric pressure sensor, Carbon dioxide (CO2) gas analyzer and other instruments from JAMES CLARK ROSS in the Davis Strait, Inner Sea - West Coast Scotland and others from 2014-06-07 to 2014-07-17 (NCEI Accession 0157403)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NCEI Accession 0157403 includes Surface underway, chemical, meteorological and physical data collected from JAMES CLARK ROSS in the Davis Strait, Inner Sea - West...

  18. Partial pressure (or fugacity) of carbon dioxide, salinity and other variables collected from Surface underway observations using Carbon dioxide (CO2) gas analyzer, thermosalinographs and other instruments from JAMES CLARK ROSS in the South Atlantic Ocean and Southern Oceans from 2006-10-24 to 2006-12-01 (NCEI Accession 0157244)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NCEI Accession 0157244 includes Surface underway, chemical and physical data collected from JAMES CLARK ROSS in the South Atlantic Ocean and Southern Oceans (> 60...

  19. Partial pressure (or fugacity) of carbon dioxide, salinity and other variables collected from Surface underway observations using Carbon dioxide (CO2) gas analyzer, thermosalinographs and other instruments from JAMES CLARK ROSS in the South Atlantic Ocean and Southern Oceans from 2009-03-11 to 2009-04-17 (NCEI Accession 0157275)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NCEI Accession 0157275 includes Surface underway, chemical and physical data collected from JAMES CLARK ROSS in the South Atlantic Ocean and Southern Oceans (> 60...

  20. Partial pressure (or fugacity) of carbon dioxide, salinity and other variables collected from underway - surface observations using Barometric pressure sensor, Carbon dioxide (CO2) gas analyzer and other instruments from the JAMES CLARK ROSS in the Arctic Ocean, Barents Sea and others from 2012-11-15 to 2013-08-16 (NODC Accession 0115256)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NODC Accession 0115256 includes chemical, meteorological, physical and underway - surface data collected from JAMES CLARK ROSS in the Arctic Ocean, Barents Sea,...

  1. Partial pressure (or fugacity) of carbon dioxide, salinity and other variables collected from Surface underway observations using Barometric pressure sensor, Carbon dioxide (CO2) gas analyzer and other instruments from JAMES CLARK ROSS in the Arctic Ocean, Barents Sea and others from 2012-11-15 to 2013-11-08 (NCEI Accession 0157246)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NCEI Accession 0157246 includes Surface underway, chemical, meteorological and physical data collected from JAMES CLARK ROSS in the Arctic Ocean, Barents Sea, North...

  2. Dissolved inorganic carbon, alkalinity, temperature, salinity and other variables collected from discrete sample and profile observations using CTD, bottle and other instruments from the JAMES CLARK ROSS in the North Greenland Sea and Norwegian Sea from 1996-07-20 to 1996-08-22 (NODC Accession 0113757)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NODC Accession 0113757 includes chemical, discrete sample, physical and profile data collected from JAMES CLARK ROSS in the North Greenland Sea and Norwegian Sea...

  3. Partial pressure (or fugacity) of carbon dioxide, dissolved inorganic carbon, temperature, salinity and other variables collected from discrete sample and profile observations using CTD, bottle and other instruments from the JAMES CLARK ROSS in the South Atlantic Ocean from 1995-03-20 to 1995-05-06 (NODC Accession 0114999)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NODC Accession 0114999 includes chemical, discrete sample, physical and profile data collected from JAMES CLARK ROSS in the South Atlantic Ocean from 1995-03-20 to...

  4. PH, alkalinity, temperature, salinity and other variables collected from discrete sample and profile observations using CTD, bottle and other instruments from JAMES CLARK ROSS in the South Atlantic Ocean, South Pacific Ocean and Southern Oceans from 2015-12-17 to 2016-01-13 (NCEI Accession 0157011)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NCEI Accession 0157011 includes chemical, discrete sample, physical and profile data collected from JAMES CLARK ROSS in the South Atlantic Ocean, South Pacific Ocean...

  5. Intervjuu prof. Geoffrey Batcheniga / intervjueerinud Peeter Linnap

    Index Scriptorium Estoniae

    Batchen, Geoffrey, 1956-

    2011-01-01

    Fotograafia leiutamise ühiskondlikust vajadusest 19. sajandil - tahtest fotografeerida, et aega kas või ajutiselt fikseerida, Foucault', Derrida ja Barthes'i fotograafiat puudutavatest tekstidest, nende analüüsist ja kontekstualiseerimisest teiste kultuurinähtustega ka autori teostes, eriti raamatus "Burning with Desire"

  6. Eesti fotograafiast 1900-1940 / Peeter Linnap

    Index Scriptorium Estoniae

    Linnap, Peeter, 1960-

    2010-01-01

    Allikatest ja hitoriograafiast. Eesti fotoajaloo historiograafilised lätted. Fotokunstnike sõnastatud taotlustest 1920.-1930.aastatel. Fotokunsti staatusest de facto - kunstikriitika seisukohti. "Uue" kunstiliigi evolutsioonimehhaanikast. Isiksusi Eesti fotograafias 20. sajandi 1. poolel. Fotograafide organisatsioonid. Fotode pildiline keskkond. Ajakirjandusfotost enne II maailmasõda. Montaaž.

  7. Saladusliku Sandu Hubani miljonid / Peeter Raidla

    Index Scriptorium Estoniae

    Raidla, Peeter, 1955-

    2005-01-01

    Eesti ühe edukaima hokiklubi Välk 494 rahastaja Sandu Hubani alias Aleksandr Gubani tegevusest, ettevõtlusest ja äritegevusest. Lisad: Hubani osalused firmades; Ettevõtted, millega Huban enam seotud ei ole; Välk 494 seob Hubani ja tema äripartnereid. Kommenteerivad Meelis Birk, Enriko Lukecha, Aivo Pärn

  8. Tihii omut / Peeter Rebane ; interv. Aleksandra Manukjan

    Index Scriptorium Estoniae

    Rebane, Peeter, 1973-

    2004-01-01

    Uuest kohvikust ja gei-klubist "Angel" Tallinnas. Stiilse atmosfääri loomisel olid abiks stilist Gerly Tinn, graafikadisainer Rain Pikand ja reklaamifirma Division. Sisekujunduse tegi disainer John Gregg Suurbritanniast

  9. Kolm kogu kassetis : [retsensioon] / Peeter Tulviste

    Index Scriptorium Estoniae

    Tulviste, Peeter, 1945-2017

    1998-01-01

    Varem ilm.: Looming, 1969, nr. 4. Rets. rmt.: Noored autorid 1967. Nikolai Baturin. Maa-alused järved : luuletusi 1963-1967. Tallinn : Eesti Raamat, 1968 ; Andres Ehin. Hunditamm : luuletusi 1959-1966. Tallinn : Eesti Raamat, 1968 ; Albert Koeney. Vihmade vaikus : luuletusi 1965-1966. Tallinn : Eesti Raamat, 1968

  10. Web aitab nutikamaid firmasid / Peeter Stamberg

    Index Scriptorium Estoniae

    Stamberg, Peeter

    2003-01-01

    Interneti-lahendustesse investeerimine on aidanud paljudel ettevõtetel oma tulemusi parandada. Autor teeb ülevaate ajakirjas BusinessWeek avaldatud edukamatest internetiprojektidest. Lisa: Internetiäri teine laine

  11. Stress testing - ettevaatliku investori abimees / Peeter Teder

    Index Scriptorium Estoniae

    Teder, Peeter

    2005-01-01

    Autor selgitab stress testingut kui investeerimisportfelli varade väärtuse hindamist ning tutvustab selle võimalusi ja ohtusid. Diagrammid: Portfelli testimis-stsenaariumiks sobivad hästi börsikrahhid. Vt. samas: Stress testing toimib ka mujal

  12. Intervjuu Theo van Leeuweniga / intervjueerinud Peeter Linnap

    Index Scriptorium Estoniae

    Leeuwen, Theo van, 1947-

    2011-01-01

    Hollandi visuaalsemiootik pildist kui keelest, kunstiajaloo ja lingvisti teadmiste ühendamise vajadusest, koostööst Gunther Kressiga, kunstiliste ja mittekunstiliste pildivormide suhetest, PowerPointist kui semiootilisest ja kultuurilisest ressursist

  13. Cine de las Americas / Peeter Riba

    Index Scriptorium Estoniae

    Riba, Peeter, 1967-

    2004-01-01

    Tallinna VIII Pimedate Ööde Filmifestivali filme - Ladina-Ameerika mängufilmid "Jumalate linn" ("Cidade de Deus") : režissöör Fernando Meirelles : Brasiilia 2002 ; "Pardihooaeg" ("Temporada de patos") : režissöör Fernando Eimbcke : Mehhiko 2004 ; "Teiselpool tänavat" ("O outro lado da rua") : režissöör Marcos Bernstein : Brasiilia 2004

  14. Equationally Compact Acts : Coproducts / Peeter Normak

    Index Scriptorium Estoniae

    Normak, Peeter

    1998-01-01

    In this article equational compactness of acts and its generalizations are discussed. As equational compactness does not carry over to coproducts a slight generalization of c-equational campactness is introduced. It is proved that a coproduct of acts is c-equationally compact if and only if all components are c-equationally campact

  15. II samba fondid eelistavad Euroopat / Peeter Teder

    Index Scriptorium Estoniae

    Teder, Peeter

    2007-01-01

    Ilmunud ka: Delovõje Vedomosti 1. august lk. 26. Hansapanga ja SEB Eesti Ühispanga suurematest pensionifondidest. Diagramm: Kahe suurima kogumispensioni fondi investeeringud regioonide lõikes; Ainsana on täielikult plussis kõik esimeses voorus liitunute fondid. Vt. samas: Ikka Euroopa

  16. Vaimud kolivad ekraani taha / Peeter Riba

    Index Scriptorium Estoniae

    Riba, Peeter, 1967-

    2003-01-01

    Režissöör Gore Verbinski lavastatud õudusfilm "Ring" ("The Ring") : Ameerika Ühendriigid 2002. Võrdlus jaapanlase Hideo Nakata filmiga 1998. aastast "Ringu" ("Telefonihelin"), mille uusversiooniks Verbinski filmi võib pidada

  17. Koolijuhi amet muutub stabiilseks / Peeter Kreitzberg

    Index Scriptorium Estoniae

    Kreitzberg, Peeter, 1948-2011

    2008-01-01

    Seadusest, mis annab koolidirektoritele tagasi tähtajatu töölepingu. Ilmunud ka Võrumaa Teataja 15. aprill 2008, lk. 2 ; Koit 15. aprill 2008, lk. 6 ; Pärnu Postimees 16. aprill 2008, lk. 15 ; Oma Saar 15. aprill 2008, lk. 5 ; Hiiu Leht 15. aprill 2008, lk. 2 ; Harju Ekspress 18. aprill 2008, lk. 6 ; Vooremaa 17. aprill 2008, lk. 2 ; Meie Maa 17. aprill 2008, lk. 2 ; Lääne Elu 15. aprill 2008, lk. 2 ; Kuulutaja 18. aprill 2008, lk. 4 ; Põhjarannik 18. aprill 2008, lk. 2

  18. Distsiplinaarne fotograafia ja interdistsiplinaarne kunstiparadiis / Peeter Linnap

    Index Scriptorium Estoniae

    Linnap, Peeter, 1960-

    2003-01-01

    Vastuseks H. Soansi ja A. Härmi artiklile "Mõned teravad polaroidid" (Sirp, 2003, 13. VI, lk. 17). Eesti 90-ndate ja praegune fotograafia. Fotograafia: mono- ja interdistsiplinaarne. Fototeooriate regulaarne surm

  19. Joonestamine lõimib õppeaineid / Peeter Sokolov

    Index Scriptorium Estoniae

    Sokolov, Peeter

    2012-01-01

    Joonestamine seob endaga kujutava geomeetria, insenerigraafika, matemaatika, füüsika, tugevusõpetuse ja veel palju õppeaineid. Kuna joonestamise CAD-i programmid on interdistsiplinaarsed, aitab joonestama õppimine aru saada ka teistest õppeainetest

  20. ELKE Grupi dividendid aina kasvavad / Peeter Raidla

    Index Scriptorium Estoniae

    Raidla, Peeter, 1955-

    2008-01-01

    Eestis, Lätis ja Leedus automüügiga tegeleva ELKE Grupi AS omanikud naudivad jätkuvalt rikkalikke dividende, 2007. a. omanikele jagatav kasumieraldis on 42 miljonit krooni. Firma omanikering, investeeringud. Lisa: ELKE Grupi majandusnäitajad

  1. Euroopa kultuuriruumis matkates / Peeter Järvelaid

    Index Scriptorium Estoniae

    Järvelaid, Peeter, 1957-

    2002-01-01

    Rektor Gustav Ewers 19. sajandi alguse Tartu kultuuriruumis, lk. 140-155 ; Mozartist ja akadeemilise biograafia kirjutamise metoodikast, lk. 155-157 ; Tegudemees Carl Gustav Jochmann (1789-1830), lk. 158-159 ; Professor Martensi tagasitulek, lk. 160-163 ; Hans-Georg Gadameri jõudmine eesti keelde, lk. 163-165 ; Unustatud geeniuse tagasitulek, lk. 166-168 ; Kannab Eestit südames: Boris Meissner 85, lk. 168-170 ; Professor Heikki Ylikangas, üks tõeline soomlane - 65, lk. 170-172 ; Ungari 1956 ühe hõimukaaslase saatuse kaudu, lk. 173-179

  2. Miks mitte parima hariduskorraldusega riigiks? / Peeter Kreitzberg

    Index Scriptorium Estoniae

    Kreitzberg, Peeter, 1948-2011

    2006-01-01

    Ilmunud ka: Pärnu Postimees, Meie Maa, Virumaa Nädalaleht 1. sept. lk. 15,2,13, Põhjarannik, Severnoje Poberezhje 2. sept. lk. 2, Valgamaalane, Järva Teataja, Virumaa Teataja, Võrumaa Teataja, Vooremaa 5. sept. lk. 2,2,11,2,2, Sõnumitooja 6. sept. lk. 2, Hiiu Leht 12. sept. lk. 2. Autori sõnul peaks majanduslike eesmärkide asemel esikohale asetama haridusalased eesmärgid, selleks pakub ta välja omapoolsed lahendused

  3. Saurix rõhub kvaliteedile / Peeter Raidla

    Index Scriptorium Estoniae

    Raidla, Peeter, 1955-

    2005-01-01

    Ilmunud ka: Delovõje Vedomosti : Desjatiletnije firmõ 2. veebr. lk. 2. AS Saurix Petroleum sai oma püüdluste kinnituseks kaks ISO sertifikaati kvaliteedi- ja keskkonnajuhtimissüsteemi eest. Vt. samas: Salapärase palgamaksja taga on Saurixi omanikud. Diagrammid: Aleksei Tshuletsi käes on lõviosa aktsiatest; Saurix Petroleum prognoosib kasumi langust

  4. Kas maavanemale tuleb nutsu anda? / Peeter Ernits

    Index Scriptorium Estoniae

    Ernits, Peeter, 1953-

    2007-01-01

    Bussitranspordi korraldamisel on tegu turuvõitlusega, enamikus maakondades on vastamisi kaks konkurenti Go Bus ja Atko. Pole maakonda, kus kaotaja ei oleks riigihanget kohtus vaidlustanud. Vt. samas: Sirje Niitra. Go Busi töö on häiritud; Intervjuu majandus- ja kommunikatsiooniminister Juhan Partsiga

  5. Armastuse feng shui / Peeter Rüberg

    Index Scriptorium Estoniae

    Rüberg, Peeter

    2000-01-01

    Järg Jan/13;20;27/Feb/3;10;17;23/Mar/2;9;16 ;30/Apr/13/May/4;11 lk. 22;38;56;70;87;102;118;134;150;166;198;230;278 ;296Vanal hiina kodu- ja elukunstil on igaks armuelu juhtumiks varuks praktilisi nõuandeid ja võtteid

  6. Teaduse mälu / Peeter Torop

    Index Scriptorium Estoniae

    Torop, Peeter, 1950-

    1999-01-01

    Varem ilm.: Vikerkaar 1993, nr. 8. Viited ja märkused lk. 474-476. Vene formalismist (vormikoolkonnast): Poeetilise Keele Uurimise Seltsist Peterburis (OPOJAZ, asut. 1914) ja Moskva Lingvistikaringist (1915). Viktor Shklovski (1893-1984)

  7. Moskvasse? - Tänan, ei! / Peeter Tulviste

    Index Scriptorium Estoniae

    Tulviste, Peeter, 1945-2017

    2005-01-01

    Autor analüüsib Venemaa poolt Eesti vastu õhkuva vale, vaenu ja laimu põhjuseid ning kiidab heaks president Arnold Rüütli otsuse mitte osaleda 9. mai pidustustel Moskvas. Ilmunud ka Koit, 2005/Mar/12, lk. 6 ; Nädaline, 2005/Mar/15, lk. 5 ; Pärnu Postimees, 2005/Mar/17, lk. 11 ; Hiiu Leht, 2005/Mar/18, lk. 2 ; Meie Maa, 2005/Mar/18, lk. 2

  8. Moskvasse? - Tänan, ei! / Peeter Tulviste

    Index Scriptorium Estoniae

    Tulviste, Peeter, 1945-2017

    2005-01-01

    Ilmunud ka Põhjarannik (2005/Mar/11) lk. 2 ; Severnoje Poberezhje (2005/Mar/11) lk. 2 ; Elva Postipoiss (2005/Mar/12) lk. 2 ; Võrumaa Teataja (2005/Mar/12) lk. 2 ; Koit (2005/Mar/12) lk. 6 ; Nädaline (2005/Mar/15) lk. 5 ; Pärnu Postimees (2005/Mar/17) lk. 11 ; Hiiu Leht (2005/Mar/18) lk. 2 ; Meie Maa (2005/Mar/18) lk. 2. Autor analüüsib Venemaa poolt Eesti vastu õhkuva vale, vaenu ja laimu põhjuseid ning kiidab heaks president Arnold Rüütli otsuse mitte osaleda 9. mai pidustustel Moskvas

  9. Halloween sunnib investori ostulainele / Peeter Koppel

    Index Scriptorium Estoniae

    Koppel, Peeter

    2004-01-01

    Ilmunud ka: Delovõje Vedomosti 29. sept. lk. 2. Aktsiaturgudel levinud ja tõestust leidnud legendi kohaselt tähistab 30. oktoober ka päeva, mille vahetus ümbruses turule sisenejad on vähemalt ajalugu vaadates olnud suhteliselt edukad. Diagramm. Kommenteerib Romet Kreek

  10. Toomas Hendrik Ilves visits Ottawa / Peeter Bush

    Index Scriptorium Estoniae

    Bush, Peeter

    2008-01-01

    President Toomas Hendrik Ilvese külaskäigust Ottawasse 28. ja 29. mail 2008. Parlamendimäel toimunud XXVIII Balti Õhtust ja Eesti Vabariigi Suursaatkonna poolt organiseeritud vastuvõtust Ottawa Hunt & Golf Club'is. Vabariigi President töövisiidil Kanadas 26.-30.05.2008

  11. Inimkäsitlusi filosoofias / Peeter Pints

    Index Scriptorium Estoniae

    Pints, Peeter

    1997-01-01

    Käsitlemist leiavad Confucius, Sokrates, Augustinus, M. Luther, B. Pascal, N. Macchiavelli, Erasmus Rotterdamist, T. Hobbes, J. Locke, Ch.L. Montesqieu, J.J. Rousseau, Cl. Helvetius, I. Kant, J. Condorcet, F.W. Hegel, L. Feuerbach, K. Marx, H. Maine de Biran, F.W. Schelling, M. Stirner, A. Schopenhauer, L. Morgan, E. Taylor, L. Levy-Bruhl, W. McDougall, H. Spencer, O. Spengler, Cl. Levy-Strauss, S. Kierkegaard, M. Weber

  12. Peeter Paani peidupaik / Peter Broeng, Piret Veigel

    Index Scriptorium Estoniae

    Broeng, Peter

    2005-01-01

    Shabby chic stiilis sisustatud norra kunstniku ja stilisti Tor Halvorseni Bjornslokkeni talust, kus T. Halvorsen korraldab isiksust ja loovust arendavaid seminare. Elamuks on ümberehitatud ait. Looduslike viimistlusmaterjalide kõrval näeb barokseid küünlajalgu, siidkangaid, modernse joonega disainiklassikat. 12 värv. ill

  13. Morita duality for monoids / Peeter Normak

    Index Scriptorium Estoniae

    Normak, Peeter

    1990-01-01

    In this paper Morita duality for monoids is introduced. Necessary and sufficient conditions for two monoids S and T to be Morita dual are given. Moreover, it is shown that if S and T are Morita dual monoids, then S and U are Moriaddition, every finite monoid having Morita duality is selfdual and even reflexive.

  14. Kivikuulide saladus / Marielle Liivet, Peeter Ernits

    Index Scriptorium Estoniae

    Liivet, Marielle

    2001-01-01

    Costa Rica dzunglitesse peitunud hiiglaslikke kivikuule kasutati ilmselt meremeeste koolitamisel. Costa Rica ülikooli õppejõud eestlane Ivar Zapp on kirjutanud neist raamatu "Atlantis in America". Joonis : Orientiirid meresõitjatele

  15. Sullerid Muugal saagi jahil / Peeter Raidla

    Index Scriptorium Estoniae

    Raidla, Peeter, 1955-

    2001-01-01

    Ilmunud ka: Estonija, 26. nov. 2001, lk. 2. Muuga sadamasse aastaid naftaterminali rajamist plaaninud AS-i Lonessa vaimne isa Jan-Bonde Nielsen on kodumaal Taanis pikemat aega politsei poolt tagaotsitav

  16. Aeg vaadata taas Citigroupi / Peeter Teder

    Index Scriptorium Estoniae

    Teder, Peeter

    2006-01-01

    Vaatamata USA ühe suurima panga Citigroup kasumi kasvule on ettevõttel siiski pärast Enroni ja WorldComi skandaale raskusi investorite leidmisega. Diagramm: Citigroupi aktsia on vaid paar korda käinud 50 dollari tasemest kõrgemal. Vt. samas: Kasvuvõimega pank

  17. Valdmanni rahaseis peo peal / Peeter Raidla

    Index Scriptorium Estoniae

    Raidla, Peeter, 1955-

    2007-01-01

    Tallinna linnavalitsuse kommunaalameti juhataja Ain Valdmanni on mitmel korral tabanud korruptsioonisüüdistused. Vt. samas: Valdmanni ärid linna klientidega; Kronoloogia: Ain Valdmann on võtnud kaheksa aasta jooksul suuri laene

  18. Aldera Invest siseneb pealinna hotelliturule / Peeter Raidla

    Index Scriptorium Estoniae

    Raidla, Peeter, 1955-

    2005-01-01

    Ilmunud ka: Delovõje Vedomosti 6. apr. lk. 4. Eestis tegutsevale Vene ärimehele Ruslan Rastoshtshenkovile kuuluv kinnisvarafirma Aldera Invest on Tallinna kinnisvaraturul tõusnud arvestavaks tegijaks. Vt. samas: Aldera Investi arendatavad kinnisvaraprojektid Tallinnas; Andres Koger: Aldera Investi mehed eelistavad varju jääda; Rastoshtshenkovi kinnisvaraväline äri

  19. Nesseri kuri maailm / Peeter Künstler

    Index Scriptorium Estoniae

    Künstler, Peeter, 1958-2009

    1996-01-01

    Arvustus: Nesser, Hõkan. Borkmanni punkt / Tlk. Vladimir Beekman. Tln. : Eesti Raamat, 1996; Nesser, Hõkan. Jämeda silmaga võrk / Tlk. Vladimir Beekman. Tln. : Eesti Raamat, 1996; Nesser, Hõkan. Tagasitulek / Tlk. Vladimir Beekman. Tln. : Eesti Raamat, 1996

  20. Tallinna Vee IPO Euroopa keskmine / Peeter Teder

    Index Scriptorium Estoniae

    Teder, Peeter

    2005-01-01

    Tallinna Vee aktsiate avaliku müügi ehk IPO mahuks kujunes koos optsioonaktsiatega 6 miljonit aktsiat ning emissiooni kogumahuks ligikaudu 870 miljonit krooni. Diagrammid: Avalikud uusemissioonid USAs ja Euroopas; Huntsmani aktsia liikunud allapoole. Vt. samas: Eesti kohta mahukas

  1. Intervjuu John Taggiga / intervjueerinud Peeter Linnap

    Index Scriptorium Estoniae

    Tagg, John, 1949-

    2011-01-01

    Inglise kunsti- ja kirjandusteaduste professor 1980. aastate Inglismaa Thatcheri-aegsetest radikaalsetest reformidest, dokumentaalfotograafia taotlustest, kaasnähtustest ja võimu ning tähenduse problemaatikast, fotograafilisest tehnoloogiast kui võimu teostamisest visuaalide abil. Ka oma populaarsemast teosest "The Burden of Representation" (Esitluse koorem)

  2. Harrastusluuletajate osadus kasvab / Peeter Künstler

    Index Scriptorium Estoniae

    Künstler, Peeter, 1958-2009

    1997-01-01

    Arvustus: Rahman, Jan. Vasõst vask; Serpent, Francois. Ka Jumal on inimene; Märka, Veiko. Tühja aju korinad; Rüütle, Indrek. Lahkumine Puhjast (kõik Eesti Kostabi Seltsi Kaasaegse Kirjanduse Keskuse väljaanded, 1997)

  3. Mine, Mailis, õige...Helsingisse! / Peeter Kreitzberg

    Index Scriptorium Estoniae

    Kreitzberg, Peeter, 1948-2011

    2007-01-01

    Autor kritiseerib Keskerakonna valimislubadusi ametnike palkade tõstmiseks ja kooliõpilaste kultuurireisideks ning leiab, et hariduse ühtlane kättesaadavus ja hariduslike võimaluste võrdsus peaks olema meie tähtsaim strateegiline eesmärk

  4. Operação de Ross: a intervenção ideal para pacientes aórticos jovens?

    Directory of Open Access Journals (Sweden)

    Francisco Diniz Affonso da COSTA

    1997-04-01

    Full Text Available Fundamentos: Próteses valvares aórticas com desempenho hemodinâmico adequado possibilitariam maior regressão da hipertrofia ventricular e normalização da função ventricular. Isto possivelmente tenha implicações importantes no prognóstico tardio após a substituição da valva aórtica. Objetivo: Avaliar o desempenho hemodinâmico do auto-enxerto pulmonar em posição aórtica e a regressão da hipertrofia ventricular esquerda após a operação de Ross. Casuística e Métodos: De maio/95 a março/97, 45 pacientes com média de idades de 27,1 anos foram submetidos à operação de Ross. Todos os pacientes foram submetidos, no pós-operatório imediato, a ecocardiografia com Doppler e cateterismo cardíaco para avaliação do desempenho hemodinâmico dos auto e homoenxertos, assim como da massa e função ventricular esquerda. Catorze pacientes com evolução superior a seis meses submeteram-se a ecocardiografia de stress com dobutamina, para estudar o desempenho hemodinâmico dos auto e homoenxertos em condição de exercício. Resultados: A mortalidade hospitalar foi de 6%. Após tempo médio de seguimento de 12,8 meses (1-23, ocorreu um óbito súbito tardio e nenhuma complicação relacionada à prótese. O desempenho hemodinâmico imediato e tardio dos auto-enxertos foi praticamente normal, com média de gradiente médio de 1,8 ± 0,6 mmHg e média de gradiente instantâneo máximo de 2,9 ± 0,9 mmHg. O grau de insuficiência valvar foi desprezível. Mesmo em condição de exercício, os gradientes não se elevaram de forma significativa, com média de gradiente médio de 4,3 ± 2,5 mmHg e média de gradiente instantâneo máximo de 10,4 ± 6,1 mmHg. Os homoenxertos utilizados para a reconstrução da via de saída do ventrículo direito tiveram excelente desempenho hemodinâmico imediato; entretanto, no seguimento tardio apresentaram discreto aumento das velocidades de fluxo com média de gradiente médio de 10 ± 7,1 mmHg em

  5. Impact of dryland salinity on population dynamics of vector mosquitoes (Diptera: Culicidae) of Ross River virus in inland areas of southwestern Western Australia.

    Science.gov (United States)

    Jardine, A; Lindsay, M D A; Johansen, C A; Cook, A; Weinstein, P

    2008-11-01

    Clearing of native vegetation for agriculture since European settlement has left 1.047 million ha of southwestern Australia affected by a severe form of environmental degradation called dryland salinity, characterized by secondary soil salinization and waterlogging. This area may expand by a further 1.7-3.4 million ha if current trends continue. Detailed investigations of seasonal of adult and larval mosquito population dynamics were undertaken in the region to test the hypothesis that the development of dryland salinity and waterlogging in inland southwestern Australia has led to a succession of mosquito species and increased Ross River virus (family Togaviridae, genus Alphavirus, RRV) transmission risk. Aedes (Ochlerotatus) camptorhynchus (Thomson) made up >90% of adult mosquito collections in saline regions. Nonmetric multidimensional scaling and generalized estimating equations modeling demonstrated that it was strongly associated with increasing severity of dryland salinity. This article describes the first detailed investigation of the mosquito fauna of inland southwestern Australia, and it is the first description of the influence of secondary soil salinity on mosquito population dynamics. Despite the dominant presence of Ae. camptorhynchus, RRV disease incidence is not currently a significant population health priority in areas affected by dryland salinity. Potential limiting factors include local climatic impacts on the seasonal mosquito population dynamics, vertebrate host distribution and feeding behavior of Ae. camptorhynchus, and the scarce and uneven distribution of the human population in the region.

  6. Widespread collapse of the Ross Ice Shelf during the late Holocene reconstracted from compound specific C-14 and meteoric Be-10

    Science.gov (United States)

    Yokoyama, Y.; Anderson, J. B.; Yamane, M.; Simkins, L. M.; Miyairi, Y.; Yamazaki, T.; Koizumi, M.; Kusahara, K.; Suga, H.; Prothro, L. O.; Hasumi, H.; Southon, J. R.; Ohkouchi, N.

    2016-12-01

    Ice shelves are among the most rapidly changing elements of the modern cryosphere, due to their sensitivity to atmospheric warming and to melting from beneath by warm ocean currents. The marine-based West Antarctic Ice Sheet (WAIS) is vulnerable to future climate change, but the degree to which is not well constrained. Obtaining a better understanding requires geological evidence of retreat history, which is complicated by the lack of proximal marine calcareous sediment, largely preventing construction of a precise chronology. Here we reconstruct the history of Ross Ice Shelf retreat based on compound specific (CS) radiocarbon dating and meteoric 10Be measurement . Taken together with land-based grounding line reconstructions, our results provide strong constraints on numerical glacial models (Yokoyama et al., 2016 PNAS). Dynamic retreat of the ice shelf edge, by as much as 400 km occurred between 5,000 and 1,500 years ago, resulting in a maritime climate for inland Antarctica as recorded in ice cores from Siple Dome and Byrd. This coincided with ocean volume increase observed in far field sea level records (Yokoyama et al., 2012 GRL; Yokoyama et al., 2016 QI). Modeling results indicate that retreat of the ice shelf resulted from combined atmospheric warming and warm ocean currents impinging onto the continental shelf.

  7. Medical and entomological malarial interventions, a comparison and synergy of two control measures using a Ross/Macdonald model variant and openmalaria simulation.

    Science.gov (United States)

    Elliott, R C; Smith, D L; Echodu, D

    2018-04-12

    Using an established Ross/Macdonald model variant for mosquito-born parasite transmission, we extend the formalism to simply incorporate time-dependent control measures. In particular, two interventions are considered, mass drug administration (MDA) and indoor residual spraying (IRS), whose individual intensities during their respective campaigns are set to the same intervention-reduced reproductive number R 0 . The impacts of these interventions, measured as each campaign's ability over time to reduce infections in a community, are found based on the transmission setting, coverage, and their associated durations. These impacts are compared for both interventions and their joint deployment. Synchronous campaigns of IRS deployed with MDA have a cooperative, synergistic effect whose impact exceeds that when the campaigns are deployed in isolation. Simulations with openmalaria, with its more complex model of transmission, are separately performed and show a similar impact enhancement with these interventions. A new, associated analysis yields simple scaling relationships that estimate the dynamical resurgence time, post-intervention, to infection proliferation in a community. Copyright © 2018. Published by Elsevier Inc.

  8. Persistent organic pollutants (POPs) in the atmosphere of coastal areas of the Ross Sea, Antarctica: Indications for long-term downward trends.

    Science.gov (United States)

    Pozo, Karla; Martellini, Tania; Corsolini, Simonetta; Harner, Tom; Estellano, Victor; Kukučka, Petr; Mulder, Marie D; Lammel, Gerhard; Cincinelli, Alessandra

    2017-07-01

    Passive air samplers were used to evaluate long-term trends and spatial distribution of trace organic compounds in Antarctica. Duplicate PUF disk samplers were deployed at six automatic weather stations in the coastal area of the Ross sea (East Antarctica), between December 2010 and January 2011, during the XXVI Italian Scientific Research Expedition. Among the investigated persistent organic compounds, Hexachlorobenzene was the most abundant, with air concentrations ranging from 0.8 to 50 pg m -3 . In general, the following decreasing concentration order was found for the air samples analyzed: HCB > PeCB > PCBs > DDTs > HCHs. While HCB concentrations were in the same range as those reported in the atmosphere of other Antarctic sampling areas and did not show a decline, HCHs and DDTs levels were lower or similar to those determined one or two decades ago. In general, the very low concentrations reflected the pristine state of the East Antarctica air. Backward trajectories indicated the prevalence of air masses coming from the Antarctic continent. Local contamination and volatilization from ice were suggested as potential sources for the presence of persistent organic pollutants in the atmosphere. Copyright © 2017 Elsevier Ltd. All rights reserved.

  9. Does mosquito control have an effect on mosquito-borne disease? The case of Ross River virus disease and mosquito management in Queensland, Australia.

    Science.gov (United States)

    Tomerini, Deanna M; Dale, Pat E; Sipe, Neil

    2011-03-01

    We examined the relationship between types of mosquito control programs and the mosquito-borne Ross River virus (RRV) disease in Queensland, Australia. Mosquito control information was collected through a survey of the responsible agencies (local governments), and RRV disease notification data were provided by the Queensland state health authority. The study developed a typology of mosquito control programs, based on the approaches used. Based on the analysis of data on RRV disease rates between mosquito control types within 4 climatic regions, each region had different combinations of mosquito control strategies in their programs; there were also general similarities in the relationship between program types and RRV rates between the regions. The long-term RRV disease rates were lower in areas where the mosquito control program included pre-emptive (rather than reactive) surveillance based on an extensive (rather than incomplete) knowledge of mosquito habitats, and where treatment of both saltwater and freshwater habitats (compared to only saltwater habitats, in coastal areas) occurred. The data indicate that mosquito control is an effective public health intervention to reduce mosquito-borne disease; hence, climate change adaptation strategies should ensure that adequate resources are available for effective vector control so as to manage the risk of mosquito-borne diseases.

  10. Near-surface elastic changes in the Ross Ice Shelf arising from transient storm and melt forcing observed with high-frequency ambient seismic noise

    Science.gov (United States)

    Chaput, J.; Aster, R. C.; Baker, M. G.; Gerstoft, P.; Bromirski, P. D.; Nyblade, A.; Stephen, R. A.; Wiens, D.

    2017-12-01

    Ice shelf collapse can herald subsequent grounded ice instability. However, robust understanding of external mechanisms capable of triggering rapid changes remains elusive. Improved understanding therefore requires improved remote and in-situ measurements of ice shelf properties. Using nearly three years of continuous data from a recently deployed 34-station broadband seismic array on the Ross Ice Shelf, we analyze persistent temporally varying, anisotropic near-surface resonant wave modes at frequencies above 1 Hz that are highly sensitive to small changes in elastic shelf properties to depths of tens of m. We further find that these modes exhibit both progressive (on the scale of months) and rapid (on the scale of hours) changes in frequency content. The largest and most rapid excursions are associated with forcing from local storms, and with a large regional ice shelf melt event in January 2016. We hypothesize that temporally variable behavior of the resonance features arises from wind slab formation during storms and/or to porosity changes, and to the formation of percolation-related refrozen layers and thinning in the case of surface melting. These resonance variations can be reproduced and inverted for structural changes using numerical wave propagation models, and thus present an opportunity for 4-D structural monitoring of shallow ice shelf elasticity and structure using long-duration seismic recordings.

  11. A method for assessing the physical recovery of Antarctic desert pavements following human-induced disturbances: a case study in the Ross Sea region of Antarctica.

    Science.gov (United States)

    O'Neill, Tanya A; Balks, Megan R; López-Martínez, Jerónimo; McWhirter, Judi L

    2012-12-15

    With increasing visitor numbers an understanding of the impacts of human activities in Antarctic terrestrial environments has become important. The objective of this study was to develop a means for assessing recovery of the ground surface desert pavement following physical disturbance. A set of 11 criteria were identified to assess desert pavement recovery. Assessed criteria were: embeddedness of surface clasts; impressions of removed clasts; degree of clast surface weathering; % overturned clasts; salt on underside of clasts; development of salt coatings; armouring per m(2); colour contrast; evidence of subsidence/melt out; accumulation of salt on cut surfaces; and evidence of patterned ground development. Recovery criteria were assigned a severity/extent rating on a scale from zero to four, zero being highly disturbed, and four being undisturbed. A relative % recovery for each criteria was calculated for each site by comparison with a nearby undisturbed control area, and an overall Mean Recovery Index (MRI) was assigned to each pavement surface. To test the method, 54 sites in the Ross Sea region of Antarctica were investigated including areas disturbed by: bulldozer scraping for road-fill, contouring for infrastructure, geotechnical investigations, and experimental treading trial sites. Disturbances had occurred at timescales ranging from one week to 50 years prior to assessment. The extent of desert pavement recovery at the sites investigated in this study was higher than anticipated. Fifty of the 54 sites investigated were in an intermediate, or higher, stage of desert pavement recovery, 30 sites were in an advanced stage of recovery, and four sites were indistinguishable from adjacent control sites (MRI = 100%). It was found that active surfaces, such as the gravel beach deposits at the Greenpeace World Park Base site at Cape Evans, the aeolian sand deposits at Bull Pass, and the alluvial fan deposits of the Loop Moraine field campsite, recovered relatively

  12. Seasonal variation of meteorological variables and recent surface ablation / accumulation rates on Davies Dome and Whisky Glacier, James Ross Island, Antarctica

    Science.gov (United States)

    Láska, K.; Nývlt, D.; Engel, Z.; Budík, L.

    2012-04-01

    In this study, surface mass balance data of two glaciers on James Ross Island, Antarctica, and its spatial and temporal variations are evaluated using snow ablation stakes, ground-penetrating radar, and dGPS measurements. The investigated glaciers are located on the Ulu Peninsula, northern part of James Ross Island. Davies Dome is an ice dome, which originates on the surface of a flat volcanic mesa at elevations >400 m a.s.l. and terminates with a single 700 m wide outlet in the Whisky Bay. Davies Dome has an area of ~6.5 km2 and lies in the altitude range of 0-514 m a.s.l. Whisky Glacier is a cold-based land-terminating valley glacier surrounded by an extensive moraine ridges made of debris-covered ice. The glacier has an area of ~2.4 km2 and lies in the altitude range of 215-520 m a.s.l. Within several summer austral summers, extensive field programme were carried out on both glaciers including the operation of two automatic weather stations, field mapping and mass balance measurements. Each station was equipped with albedometer CM7B (Kipp-Zonen, Netherlands), air temperature and humidity sensor EMS33 (EMS, Czech Republic), propeller anemometer 05103 (Young, USA), and snow depth sensors (Judd, USA). In the period 2009-2011, high seasonal and interdiurnal variability of incoming solar radiation and near-surface air temperature was found as a result of changes in the circulation patterns and synoptic-scale weather systems moving in the Circumpolar Trough. High ablation and accumulation rates were recorded mainly in the spring and summer seasons (October-February), while negligible changes were found in winter (May-September). The effects of positive degree-day temperatures on the surface ablation rates were examined using a linear regression model. In this approach, near-surface air temperature maps on the glacier surfaces were derived from digital elevation model according to actual temperature lapse rates. Mass balance investigations started in 2006 on Davies

  13. Põ-põ-põnevus ga-garanteeritud / Karl Martin Sinijärv

    Index Scriptorium Estoniae

    Sinijärv, Karl Martin, 1971-

    2003-01-01

    Thomas, Ross. Kibuvitsatihnik : [romaan] / inglise keelest tõlkinud Ann Must. Tallinn] : Varrak, 2003; Simenon, Georges. Peeter Lätlane : [romaan] / prantsuse keelest tõlkinud Madli Kütt. [Tallinn] : Tänapäev, 2003 ; Graham, Caroline. Mõrvad Badger's Driftis / inglise keelest tõlkinud Urve Liivamägi. [Tallinn] : Varrak, 2003

  14. China's first intermediate resolution multi-channel seismic survey in the northern Victoria Land Basin and Terror Rift, Ross Sea, Antarctica

    Science.gov (United States)

    Shen, Zhongyan; Gao, Jinyao; Zhang, Tao; Wang, Wei; Ding, Weifeng; Zhang, Sheng

    2017-04-01

    The West Antarctic Rift System (WARS) represents one of the largest active continental rift systems on Earth and is less well known than other rift systems because it is largely covered by thick ice. The Terror Rift (TR), superimposing on the Victoria Land Basin (VLB) in the western Ross Sea, is identified as the most recent deformational zone of the WARS, thus will provide knowledge of the active deformation process of the WARS. The structure and kinematics of the TR is under debate. Originally, the TR was thought to consist of two parts: the Discovery Graben and the magmatically-intruded Lee Arch. New denser seismic grid in the middle and southern segments of the TR revealed a different structure of the Lee Arch while the northern segment of the TR is not well studied. The glacial history of the VLB/TR region is another attractive issue to the geologists since this area records the behavior information of EAIS and WAIS. In the southern part of the VLB, especially in the McMurdo Sound, the framework of the glacial history is well established after several deep cores which recovery the whole stratigraphic sequences since the onset of the glaciation. However, the glacial history of the northern part of the VLB/TR is less well studied and here we emphasize its importance because the northern part of the VLB/TR is a link between the well-studied southern VLB and the sediment-well-preserved Northern Basin. During the 32nd Chinese National Antarctic Research Expedition, on the board of the RV XueLong, we collected intermediate resolution multi-channel seismic reflection data in the northern VLB/TR. These data will establish new constraints on the timing of deformation, structure and kinematics of the TR, and the history of the EAIS and WAIS.

  15. Valuation of Indonesian catastrophic earthquake bonds with generalized extreme value (GEV) distribution and Cox-Ingersoll-Ross (CIR) interest rate model

    Energy Technology Data Exchange (ETDEWEB)

    Gunardi,; Setiawan, Ezra Putranda [Mathematics Department, Gadjah Mada University (Indonesia)

    2015-12-22

    Indonesia is a country with high risk of earthquake, because of its position in the border of earth’s tectonic plate. An earthquake could raise very high amount of damage, loss, and other economic impacts. So, Indonesia needs a mechanism for transferring the risk of earthquake from the government or the (reinsurance) company, as it could collect enough money for implementing the rehabilitation and reconstruction program. One of the mechanisms is by issuing catastrophe bond, ‘act-of-God bond’, or simply CAT bond. A catastrophe bond issued by a special-purpose-vehicle (SPV) company, and then sold to the investor. The revenue from this transaction is joined with the money (premium) from the sponsor company and then invested in other product. If a catastrophe happened before the time-of-maturity, cash flow from the SPV to the investor will discounted or stopped, and the cash flow is paid to the sponsor company to compensate their loss because of this catastrophe event. When we consider the earthquake only, the amount of discounted cash flow could determine based on the earthquake’s magnitude. A case study with Indonesian earthquake magnitude data show that the probability of maximum magnitude can model by generalized extreme value (GEV) distribution. In pricing this catastrophe bond, we assumed stochastic interest rate that following the Cox-Ingersoll-Ross (CIR) interest rate model. We develop formulas for pricing three types of catastrophe bond, namely zero coupon bonds, ‘coupon only at risk’ bond, and ‘principal and coupon at risk’ bond. Relationship between price of the catastrophe bond and CIR model’s parameter, GEV’s parameter, percentage of coupon, and discounted cash flow rule then explained via Monte Carlo simulation.

  16. Valuation of Indonesian catastrophic earthquake bonds with generalized extreme value (GEV) distribution and Cox-Ingersoll-Ross (CIR) interest rate model

    International Nuclear Information System (INIS)

    Gunardi,; Setiawan, Ezra Putranda

    2015-01-01

    Indonesia is a country with high risk of earthquake, because of its position in the border of earth’s tectonic plate. An earthquake could raise very high amount of damage, loss, and other economic impacts. So, Indonesia needs a mechanism for transferring the risk of earthquake from the government or the (reinsurance) company, as it could collect enough money for implementing the rehabilitation and reconstruction program. One of the mechanisms is by issuing catastrophe bond, ‘act-of-God bond’, or simply CAT bond. A catastrophe bond issued by a special-purpose-vehicle (SPV) company, and then sold to the investor. The revenue from this transaction is joined with the money (premium) from the sponsor company and then invested in other product. If a catastrophe happened before the time-of-maturity, cash flow from the SPV to the investor will discounted or stopped, and the cash flow is paid to the sponsor company to compensate their loss because of this catastrophe event. When we consider the earthquake only, the amount of discounted cash flow could determine based on the earthquake’s magnitude. A case study with Indonesian earthquake magnitude data show that the probability of maximum magnitude can model by generalized extreme value (GEV) distribution. In pricing this catastrophe bond, we assumed stochastic interest rate that following the Cox-Ingersoll-Ross (CIR) interest rate model. We develop formulas for pricing three types of catastrophe bond, namely zero coupon bonds, ‘coupon only at risk’ bond, and ‘principal and coupon at risk’ bond. Relationship between price of the catastrophe bond and CIR model’s parameter, GEV’s parameter, percentage of coupon, and discounted cash flow rule then explained via Monte Carlo simulation

  17. Poly-brominated diphenyl-ethers (PBDEs) and other persistent organic pollutants in blood of penguins from the Ross Sea (Antarctica)

    Energy Technology Data Exchange (ETDEWEB)

    Corsolini, S.; Ademollo, N.; Mariottini, M.; Focardi, S. [Universita degli Studi di Siena, Siena (Italy)

    2004-09-15

    Polychlorobiphenyls (PCBs), hexachlorobenzene (HCB), polybrominated diphenyl ethers (PBDEs) and dichlorodiphenyl-dichloro ethane (pp'-DDE) including its isomers and metabolites are known as POPs very well. POPs are particularly hazardous to wildlife not only because they are toxic but because they are persistent and distributed on global scale. Polybrominated diphenyl ethers (PBDEs) are a class of POPs used worldwide as flame retardants with an increasing trend in the market demand (67.4 ktons in 2001), but with some restrictions in their usage in Europe. PBDEs are hydrophobic, highly soluble in lipids, resistant to biodegradation and have similar behavior to polychlorinated biphenyls (PCBs) in aquatic and terrestrial ecosystems. Their bioaccumulation and biomagnification properties, as well their global increasing presence, have already been reported by many authors. PBDEs have been detected in remote Arctic regions10 that seem to be their final sink. PBDEs show acute toxicity and a prolonged exposure can affect the function of thyroid and cause neurodevelopmental disorders and estrogenic and hepatic effects. Furthermore, a synergic effect with dioxin-like compounds or other POPs cannot be excluded. The two aims of this study are: (1) to evaluate accumulation levels and patterns of PCBs, PBDEs and chlorinated pesticides in blood samples of the Adelie penguin, Pygoscelis adeliae, the Emperor penguin, Aptenodytes forsteri and the South Polar skua, Cataracta maccormicki from three sites in the Ross Sea (Antarctica); (2) to assess the suitability of blood for the detection of POP residues in supposedly low contaminated organisms that live in protected/ecologically sensitive areas.

  18. Effect of using different levels of Dill seeds on performance, some blood biochemical and intestinal microbial population in Ross 308 broiler chicks

    Directory of Open Access Journals (Sweden)

    Yaser Rahimian

    2017-07-01

    Full Text Available Background & Aim: Dill “Anethum graveolens” is an annual medical plantin the celery family “Apiaceae”. It is the sole species of the genus “Anethum”.The health advantages of dill seed include its ability to increasedigestive health, as well as providingrelief from insomnia, hiccups, diarrhea, dysentery, menstrual disorders, respiratory disorders, and cancer. This experiment aimed to determine the effects of using different levels of Dill seeds on performance, some blood biochemical parameters and intestinal microbial population in Ross 308 broiler chicks. Experimental: 300 one-day-old male broiler chickswere divided into the four treatments with six replicates and 15 birds each as randomized design. The treatments contained basal diet with no Dill seeds kept as control, and200,400 and 600 gof Dill seedsper each ton of diets respectively. The live bodyweightsgain, feed intake and feed conversion ratio of birdswere calculated weekly. At the end of the experimentfour male birdsform each replicates were slaughtered and dressing percentage were calculated. In addition, some carcass traits and chick’s visceral partwere weighed separately as percentage of carcass and some organs weight. Results: Data indicated that using Dill seeds increased feed intake (FI in treatments compared to control. Also, body weight (BW (g/d and Pre-slaughter weight (g were higher in groups that were fed by dill seeds compared to the control. Additionally, there were significant differences (p<0.05 for feed conversation ratio (FCR among treatments. Recommended applications/industries: In conclusion, increasing levels of Dill seeds improved performance and some blood biochemical parameters of broilers chicks.

  19. Assessment of current burden of human rabies at Sir Ronald Ross Institute of Tropical and Communicable Diseases (Government Fever Hospital – Five year study

    Directory of Open Access Journals (Sweden)

    Dukkipati Kalyani

    2017-01-01

    Full Text Available Human rabies has been still endemic in India. There are an increasing number of studies estimating the burden of human rabies, but the true incidence of the disease and endemicity were rarely reported in the literature. The main objectives of the present study were to determine the endemicity and to estimate the current burden of human rabies in and around Sir Ronald Ross Institute of Tropical and Communicable Diseases (SRRIT & CD, Nallakunta, Hyderabad. All cases admitted at SRRIT & CD with signs and symptoms of rabies were studied during the period of January 2009 and December 2013. The annual incidence of human rabies in this hospital was estimated to be 152. It is endemic mainly in urban areas that include many areas in Hyderabad and Secunderabad and also adjacent districts. The majority of the patients were children and adult male, from urban areas, and had not taken post exposure prophylaxis (PEP i.e. wound care, active immunization (ARV and passive immunization (RIG. The main animals responsible for bites were dogs (99%, most of which were stray and the most common bite sites were the extremities. Most common clinical feature was hydrophobia. About 92.76% of these patients had not taken PEP. Human rabies continues to be a dreadful disease in India and the dogs are the principal reservoir, mainly stray dogs. This study provides strong evidence that human rabies is still an endemic disease even in urban areas. This is mainly due to lack of awareness about proper PEP. Improved coverage with modern rabies vaccines, control of rabies due to dogs and other animals and intensifying public education about the disease play main role in the reduction of the disease. [J Med Allied Sci 2017; 7(1.000: 14-19

  20. Peeter Kreitzberg : võtame vaestelt lapsed ära! / Peeter Kreitzberg ; interv. Helen Urbanik

    Index Scriptorium Estoniae

    Kreitzberg, Peeter, 1948-2011

    2001-01-01

    Endine haridusminister tuli märtsi keskel konverentsil "Teine võimalus hariduses" välja ettepanekuga, et lastele peaks koolis käimine olema kohustuslik 18. eluaastani, riigi pansionidesse ja internaatidesse tuleks panna need lapsed, kelle pered ei jaksa neid üleval pidada. Autori täiendus 3. mai Eesti Ekspressi kirjade rubriigis (lk. A6) pealkirja all: Pakkusin vanematele võimalust, mitte vaeste laste konfiskeerimist. Autor: Keskerakond. Parlamendisaadik

  1. Peeter Kreitzberg : kui poliitika trügib sporti / Peeter Kreitzberg

    Index Scriptorium Estoniae

    Kreitzberg, Peeter, 1948-2011

    2005-01-01

    Vestlus Eesti Spordiseltsi Kalev esimehega kriitikast seltsi juhtkonna juhtimisstiili kohta, kinnisvaratehingutest ja erakorralise üldkoosoleku kokkukutsumisest. Samas ka lühiintervjuu Riho Soonikuga

  2. Peeter Kreitzberg : Ma ei ole Savisaare käskjalg / Peeter Kreitzberg ; interv. Maarius Suviste

    Index Scriptorium Estoniae

    Kreitzberg, Peeter, 1948-2011

    2001-01-01

    Presidendikampaaniast ja presidendi missioonist. Kriitikat president Lennart Meri tegevuse kohta. Miks Eesti ei ole naispresidendikandidaati. Keskerakonna imago ja Edgar Savisaar. Eesti: probleemid ja tulevik. Autor: Keskerakond. Parlamendisaadik

  3. Eesti Suusapäevad Jay Peak´is / Peeter Teedla ; fotod: Peeter Teedla

    Index Scriptorium Estoniae

    Teedla, Peeter

    2006-01-01

    märtsikuu esimesel nädalalõpul idaranniku eestlaste suusapäevad, osavõtjaid 156, paljud perekondade ja väikeste lastega, organiseerijaks Kristin Raamot. Peeti murdmaasuusatamise - ja slaalomivõistlused

  4. Partial pressure (or fugacity) of carbon dioxide, salinity and other variables collected from Surface underway observations using Carbon dioxide (CO2) gas analyzer, Thin film type equilibrator for autonomous carbon dioxide (CO2) measurement and other instruments from JAMES CLARK ROSS in the English Channel, North Atlantic Ocean and South Atlantic Ocean from 1995-10-02 to 1998-10-16 (NCEI Accession 0157101)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NCEI Accession 0157101 includes Surface underway, chemical and physical data collected from JAMES CLARK ROSS in the English Channel, North Atlantic Ocean and South...

  5. Synchronous alkaline and subalkaline magmatism during the late Neoproterozoic-early Paleozoic Ross orogeny, Antarctica: Insights into magmatic sources and processes within a continental arc

    Science.gov (United States)

    Hagen-Peter, Graham; Cottle, John M.

    2016-10-01

    Extensive exposure of intrusive igneous rocks along the Ross orogen of Antarctica-an ancient accretionary orogen on the margin of East Gondwana-provides an exceptional opportunity to study continental arc magmatism. There is significant petrologic and geochemical variability in igneous rocks within a 500-km-long segment of the arc in southern Victoria Land. The conspicuous occurrence of carbonatite and alkaline silicate rocks (nepheline syenite, A-type granite, and alkaline mafic rocks) adjacent to large complexes of subalkaline granitoids is not adequately explained by traditional models for continental arc magmatism. Extensive geochemical analysis (> 100 samples) and zircon U-Pb geochronology (n = 70) confirms that alkaline and carbonatitic magmatism was partially contemporaneous with the emplacement of large subduction-related igneous complexes in adjacent areas. Major pulses of subalkaline magmatism were compositionally distinct and occurred at different times along the arc. Large bodies of subalkaline orthogneiss and granite (sensu lato) were emplaced over similar time intervals (ca. 25 Myr) to the north (ca. 515-492 Ma) and south (ca. 550-525 Ma) of the alkaline magmatic province, although the initiation of these major pulses of magmatism was offset by ca. 35 Myr. Alkaline and carbonatitic magmatism spanned at least ca. 550-509 Ma, overlapping with voluminous subalkaline magmatism in adjacent areas. The most primitive rocks from each area have similarly enriched trace element compositions, indicating some common characteristics of the magma sources along the arc. The samples from the older subalkaline complex have invariably low Sr/Y ratios (generation and differentiation. The younger subalkaline complex and subalkaline rocks within the area of the alkaline province extend to higher Sr/Y ratios (up to 300), indicative of generation and differentiation at deeper levels. The significant spatial and temporal diversity in magmatism can be explained by a tectono

  6. Phytoplankton assemblages and (bio)geochemical proxies indicate enhanced productivity and sea-ice decline in the Ross Sea during Marine Isotope sub-Stage 5e

    Science.gov (United States)

    Hartman, Julian; Sangiorgi, Francesca; Albertazzi, Sonia; Ángeles Bárcena, Mariá; Bijl, Peter; Giglio, Federico; Langone, Leonardo; Peterse, Francien; Tateo, Fabio; Trincardi, Fabio; Asioli, Alessandra

    2017-04-01

    Sea ice is an important component of the Antarctic cryosphere. It plays an important role in climate (e.g. albedo, gas exchange with the atmosphere), ocean circulation and primary productivity. Although sea ice has been increasing on average around Antarctica as a result of current global climate change, long-term model predictions expect sea ice to decline. To better understand the changes in sea-ice cover and its consequences on the oceanography, biology and geochemistry of the Southern Ocean during on-going and near-future warming it is important to study past periods of global warming, such as the Last Interglacial (LIG, 125-119 ka), also known as Marine Isotope sub-Stage 5e (MIS5e). During MIS5e global temperatures were on average 2°C warmer than present-day, the same temperature set as maximum global warming limit during the recent Paris Agreement (COP21). We investigated changes in sea-ice cover and environmental conditions by means of diatom, palynological, foraminifer and (bio)geochemical data in a sediment core (AS05-10) from the continental slope of the Drygalski Basin, Ross Sea (2377 mbsl) encompassing the MIS5e. The core was collected within the frame of the PNRA 2009/A2.01 project, an Italian project with a multidisciplinary approach, and covers approximately the last 350 kyr according to an age model based on diatom bioevents and cyclostratigraphy. The productivity proxies, e.g., excess barium, magnetic susceptibility and diatom abundances show a strong relation to the glacial-interglacial cycles. The rapid deglaciations preceding MIS5e and MIS7e are characterized by Ice Rafted Debris and the presence of reworked material. Subsequently, each interglacial is characterized by enhanced productivity related to a decrease in annual sea-ice cover. The beginning of each interglacial is also marked by changes in the fossil assemblages and organic geochemical proxies indicative of high nutrient conditions and water column stratification due to fresh water

  7. Comparison of the Effect of Different Levels of Garlic Powder on the Levels of Serum Cholesterol and Triglyceride of Two Strains Broiler Chicks (Arian and Ross

    Directory of Open Access Journals (Sweden)

    B. Nazari

    2008-10-01

    Full Text Available Background and ObjectivesGarlic [Allium sativum] has been used as a medicinal plant for thousands of years. Epidemiologic studies show an inverse correlation between garlic consumption and progression of cardiovascular disease. Cardiovascular disease is a complex and multifaceted disease and is characterized by several factors such as elevated serum lipids (cholesterol and triglyceride. In this study, we will investigate the effect of different levels of garlic powder on serum cholesterol and triglyceride of two strains of broiler chicks.MethodsUtilizing a completely random design with factorial method, 714 one-day old broiler chicks of two different strains (Ross and Arian were put on seven different diet regiments for a period of 8 weeks with 3 daily feedings. The chicks in the control group were exclusively put on basal diet and the other groups were fed with o.1, 0.2, 0.4, 0.6, 0.8, and 1% of garlic powder in the basal diet. After 8 weeks blood sample was collected from the chicks. The level of serum cholesterol and triglyceride of collected blood samples were measured.The collected data was analyzed using Univariate Analysis of Variance followed by Tukey post hoc test. P< 0.05 was considered significant.ResultsGarlic powder reduced the level of serum cholesterol significantly (p<0.01 however it did not reduce the level of serum triglyceride. There was a significant difference in reduction of the serum cholesterol level among various diets (p<0.05. This reduction was not observed on serum triglyceride level. Also, gender and strain of chicks did not have a significant effect on serum cholesterol and triglyceride levels.ConclusionThe results show that birds whose diet contained garlic powder, exhibit significant reduction in their serum cholesterol level, however there was no significant change in their serum triglyceride level. Garlic powder did not influence the level of serum lipids among the two strains of subject chicks. It was also

  8. Comparison of the Effect of Different Levels of Garlic Powder on the Levels of Serum Cholesterol and Triglyceride of Two Strains Broiler Chicks (Arian and Ross

    Directory of Open Access Journals (Sweden)

    B Nazari

    2012-05-01

    Full Text Available

    Background and Objectives

    Garlic [Allium sativum] has been used as a medicinal plant for thousands of years. Epidemiologic studies show an inverse correlation between garlic consumption and progression of cardiovascular disease. Cardiovascular disease is a complex and multifaceted disease and is characterized by several factors such as elevated serum lipids (cholesterol and triglyceride. In this study, we will investigate the effect of different levels of garlic powder on serum cholesterol and triglyceride of two strains of broiler chicks.

    Methods

    Utilizing a completely random design with factorial method, 714 one-day old broiler chicks of two different strains (Ross and Arian were put on seven different diet regiments for a period of 8 weeks with 3 daily feedings. The chicks in the control group were exclusively put on basal diet and the other groups were fed with o.1, 0.2, 0.4, 0.6, 0.8, and 1% of garlic powder in the basal diet. After 8 weeks blood sample was collected from the chicks. The level of serum cholesterol and triglyceride of collected blood samples were measured.

    The collected data was analyzed using Univariate Analysis of Variance followed by Tukey post hoc test. P< 0.05 was considered significant.

     

    Results

    Garlic powder reduced the level of serum cholesterol significantly (p<0.01 however it did not reduce the level of serum triglyceride. There was a significant difference in reduction of the serum cholesterol level among various diets (p<0.05. This reduction was not observed on serum triglyceride level. Also, gender and strain of chicks did not have a significant effect on serum cholesterol and triglyceride levels.

     

    Conclusion

    The results show that birds whose diet contained garlic powder, exhibit significant reduction in their serum cholesterol

  9. Growth performance parameters, bone calcification and immune response of in ovo injection of 25-hydroxycholecalciferol and vitamin K3in male ross 308 broilers.

    Science.gov (United States)

    Abbasi, Tahereh; Shakeri, Malak; Zaghari, Mojtaba; Kohram, Hamid

    2017-03-01

    This experiment aimed to evaluate the effects of in ovo injection of 25-hydroxycholecalciferol (25-OH-D 3 ) and Vitamin K 3 on growth performance, bone calcification and immune system responses in male Ross 308 broilers. Twelve treatment groups with a total number of 768 experimental hatching eggs, four replications and 16 eggs in each replication were selected to form a completely randomized design of factorial arrangement. Treatments included: (1) distilled water, (2) 0.4 μg D 3 , (3) 0.4 μg D 3  + 2 μg K 3 , (4) 0.4 μg D 3  + 6 μg K 3 , (5) 0.6 μg D 3 , (6) 0.6 μg D 3  + 2 μg K 3 , (7) 0.6 μg D 3  + 6 μg K 3 , (8) 0.8 μg D 3 , (9) 0.8 μg D 3  + 2 μg K 3 , (10) 0.8 μg D 3  + 6 μg K 3 , (11) 2 μg K 3 and (12) 6 μg K 3 . Eggs were transferred to corresponding hatching baskets on the 18th day of incubation and received 0.5 ml of experimental solutions specific to each treatment. The results of our experiments showed that Treatment No. 4 ranked the best out of those administered; holding the highest level of weight gain, feed intake during the breeding period (grower and finisher), bone calcium and phosphorus concentration, and tibia fractural force, (p Vitamins D 3 and K 3 in ovo injection has beneficial effects on growth performance, immune system and bone development. Copyright © 2017 Elsevier Inc. All rights reserved.

  10. Effect of bee pollen extract as a supplemental diet on broilers´s ross 308 breast and thigh meat muscles fatty acids

    Directory of Open Access Journals (Sweden)

    Peter Haščík

    2014-02-01

    Full Text Available The present study was aimed to study the effect of the bee pollen extract on the broiler Ross 308 breast and thigh meat fatty acids. The experiment enrolled 90 chicks in one day old, which were divided into 3 groups (control, E1 and E2. The broiler has been bred in a cage condition for 42 days. To the experimental groups were added bee pollen extract in the amount (400, 800  Normal 0 false false false SK JA X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:Calibri;} mg.kg-1. The chickens have been bred in a cage conditions, each cage was equipped with feed dispenser and water intake was ensured ad libitum through a self feed-pump. The temperature was controlled during the fattening period and it was 33 °C at the first day and every week was reduced about 2 °C the end temperature was 23 °C. At the end of the experiment the fatty acids have beenevaluatedby using Agilent 7890A Gas Chromatograph apparatus (USA. The findings have been shown that the myristoleic acid, linoleic acid, linoelaidic acid, arachidonic acid, and archaic acid were decreased after using the bee pollen into broiler feed mixture otherwise, the bee pollen has been increased the polemic acids and oleic acid and there were found no significant differences (P ≥0.05 among all the experimental groups.From the recent experiment, we conclude that bee pollen extract has decreasedthe fattyacids except palmitoleic acid acid and oleic acid, whichwere higher compared to control groupand there were no significant differences (P ≥0.05 between experimental groups.

  11. Time-space focused intrusion of genetically unrelated arc magmas in the early Paleozoic Ross-Delamerian Orogen (Morozumi Range, Antarctica)

    Science.gov (United States)

    Rocchi, S.; Di Vincenzo, G.; Dini, A.; Petrelli, M.; Vezzoni, S.

    2015-09-01

    The growth of continental crust in accretionary orogenic belts takes place through repeated cycles of subduction-accretion of rock units from continental and oceanic magmatic arcs, supra-subduction zone backarcs and forearcs loaded with continent-derived materials. An ancient example relevant to magmatic arc accretion models is represented by the remnants of the Cambrian-Ordovician Ross Orogen in the Morozumi Range, Victoria Land (Antarctica). There, late Neoproterozoic phyllites host an intrusive complex which preserves a remarkably uncommon record of genetically unrelated magma pulses emplaced under a variable stress regime in a short time span: (1) a dominant K-feldspar-phyric granite, (2) fine-grained dioritic stocks and dykes, (3) a peraluminous granite; and (4) a tonalitic-granodioritic dyke swarm. Laserprobe U-Pb zircon dates cluster at late Cambrian times for all these units, yet they carry differential cargoes of relict cores. Unique geochemical-isotopic signatures for both the less evolved magmas (diorite and dyke tonalite) and the most acidic ones (granite and peraluminous granite) indicate that each one of them originated from distinct sources at depth. Additionally, field relationships and chemical evolutionary trends testify for a variety of shallow level open-system processes, such as magma mingling/mixing between diorite and main granite magmas, as well as progressive incorporation of the host schists by the dyke tonalite magma. In summary, crustal growth in the Morozumi intrusive complex was contributed by fresh mantle magma issuing from the metasomatised mantle wedge, while the production of other melts did recycle different crustal portions/layers: the main granite derived from Grenville-age granulitic lower crust; the peraluminous granite from late Proterozoic upper crust, and the tonalite magmas derived from subduction erosion-enriched subarc mantle and evolved by ingestion of local metasedimentary rocks. Overall, the Morozumi intrusive complex

  12. Melt Origin Across a Rifted Continental Margin: A Case for Subduction-related Metasomatic Agents in the Lithospheric Source of Alkaline Basalt, Northwest Ross Sea, Antarctica

    Science.gov (United States)

    Panter, K. S.; Castillo, P.; Krans, S. R.; Deering, C. D.; McIntosh, W. C.; Valley, J. W.; Kitajima, K.; Kyle, P. R.; Hart, S. R.; Blusztajn, J.

    2017-12-01

    Alkaline magmatism within the West Antarctic rift system in the NW Ross Sea (NWRS) includes a chain of shield volcanoes extending 260 km along the coast, numerous seamounts located on the continental shelf and hundreds more within the oceanic Adare Basin. Dating and geochemistry confirm that the seamounts are Pliocene‒Pleistocene in age and petrogenetically akin to the mostly Miocene volcanism on the continent as well as to a much broader region of alkaline volcanism that altogether encompasses areas of West Antarctica, Zealandia and Australia. All of these regions were contiguous prior to Gondwana breakup at 100 Ma, suggesting that the magmatism is interrelated. Mafic alkaline magmas (> 6 wt.% MgO) erupted across the transition from continent to ocean in the NWRS show a remarkable systematic increase in Si-undersaturation, P2O5, Sr, Zr, Nb and light rare earth element (LREE) concentrations, LREE/HREE and Nb/Y ratios. Radiogenic isotopes also vary with Nd and Pb ratios increasing and Sr ratios decreasing ocean-ward. The variations are not explained by crustal contamination or by changes in degree of mantle partial melting but are likely a function of the thickness and age of mantle lithosphere. The isotopic signature of the most Si-undersaturated and incompatible element enriched basalts best represent the composition of the sub-lithospheric source with low 87Sr/86Sr (≤ 0.7030) and δ18Oolivine (≤ 5.0 ‰), high 143Nd/144Nd ( 0.5130) and 206Pb/204Pb (≥ 20) ratios. The isotopic `endmember' is derived from recycled material and was transferred to the lithospheric mantle by small degree melts to form amphibole-rich metasomes. Later melting of the metasomes produced silica-undersaturated liquids that reacted with the surrounding peridotite. This reaction occurred to a greater extent as the melt traversed through thicker and older lithosphere continent-ward. Ancient or more recent ( 550‒100 Ma) subduction along the margin of Gondwana supplied the recycled

  13. New Ross Community Hospital, Hospital Road, New Ross, Wexford.

    LENUS (Irish Health Repository)

    Bowes, John

    2012-08-01

    A number of rheumatoid arthritis (RA) susceptibility genes have been identified in recent years. Given the overlap in phenotypic expression of synovial joint inflammation between RA and psoriatic arthritis (PsA), the authors explored whether RA susceptibility genes are also associated with PsA.

  14. New Ross Community Hospital, Hospital Road, New Ross, Wexford.

    LENUS (Irish Health Repository)

    Bowes, John

    2011-09-01

    To investigate a shared genetic aetiology for skin involvement in psoriasis and psoriatic arthritis (PsA) by genotyping single-nucleotide polymorphisms (SNPs), reported to be associated in genome-wide association studies of psoriasis, in patients with PsA.

  15. Stable Isotopic signatures of Adélie penguin remains provide long-term paleodietary records in Northern Victoria Land (Ross Sea, Antarctica)

    Science.gov (United States)

    Lorenzini, Sandra; Baroni, Carlo; Fallick, Anthony Edward; Baneschi, Ilaria; Salvatore, Maria Cristina; Zanchetta, Giovanni; Dallai, Luigi

    2010-05-01

    The stable isotopes geochemistry of carbon and nitrogen provides a powerful tools for investigating in animal dietary patterns and shifts during the past. The signature of C and N isotopes provide direct information about the diet of an individual and its dietary patterns, especially when the dietary sources consist of prey from different trophic levels (i.e. different C and N isotopic composition) (DeNiro and Epstein 1978, Minawaga and Wada 1984, Koch et al. 1994, Hobson 1995). By analyzing the isotopic composition of penguin remains, we present a new detailed Adélie penguin (Pygoscelis adeliae) paleodietary record for the area of Terra Nova Bay (Victoria Land, Ross Sea). Adélie penguins primarily feed on fish (mainly the silverfish Pleuragramma antarcticum) and krill (Euphausia superba, Euphausia cristallorophias) (Ainley 2002, Lorenzini et al. 2009) that belonging to two different trophic levels. Consequently, they are characterized by different isotopic signatures. Specifically, we analyzed 13C/12C and 15N/14N ratios of more than one thousand of modern and fossil Adélie penguin eggshell and guano samples collected from ornithogenic soils (penguin guano-formed) dated back to ≈7,200 years BP (Baroni and Orombelli 1994, Lambert et al. 2002, Baroni and Hall 2004, Hall et al. 2006). The expanded database of stable isotope values obtained from Adélie penguin remains define a detailed paleodietary record with an excellent temporal continuity over all the investigated time period. Our data indicate a significant dietary shift between fish and krill, with a gradual decrease from past to present time in the proportion of fish compared to krill in Adélie penguin diet. From 7200 yrs BP to 2000 yrs BP, δ13C and δ15N values indicate fish as the most eaten prey. The dietary contribution of lower-trophic prey in penguin diet started becoming evident not earlier than 2000 yrs BP, when the δ13C values reveal a mixed diet based on fish and krill consumption. Modern

  16. Eesti luule alustekst / Kristiina Ross

    Index Scriptorium Estoniae

    Ross, Kristiina, 1955-

    2017-01-01

    Arvustus: Opitz, Martin. Raamat saksa luulekunstist / saksa keelest tõlkinud Kai Tafenau, värsid tõlkinud Maria-Kristiina Lotman ; kommenteerinud Kai Tafenau ja Maria-Kristiina Lotman. Tallinn : Tallinna Ülikooli Kirjastus, 2016. (Bibliotheca artis poeticae)

  17. The role of pelagic-benthic coupling in structuring littoral benthic communities at Terra Nova Bay (Ross Sea and in the Straits of Magellan

    Directory of Open Access Journals (Sweden)

    Riccardo Cattaneo-Vietti

    1999-12-01

    Full Text Available In Antarctic and peri-Antarctic regions, benthic communities are persistent in time and show high biomass and large numbers of individuals, mainly consisting of suspension and deposit feeders. In fact, apart from recruitment, the major factor structuring these communities is the high flow of organic matter from the pelagic domain to the bottom, representing an important energy source for the benthic organisms. The aim of this paper is to review, compile and compare the data from earlier investigations in Terra Nova Bay (Ross Sea and the Straits of Magellan, in order to come to a more general conclusion about the role of the pelagic-benthic coupling in structuring littoral benthic communities in southern coastal areas. Few measurements of flux rates and the biochemical composition of the sinking particles occurring in Antarctic and peri-Antarctic shallow waters are available, but a compilation of our own data and others allows a comparison of these two systems. The different environmental conditions between Antarctica and the Straits of Magellan lead to differences in the origin of the particulate organic matter and in its biochemical composition, and consequently in the coupling between pelagic and benthic domains. At Terra Nova Bay the summer particulate matter shows a high labile fraction of a good food value: its flux has been evaluated at about 0.67 g m-2d-1. Conversely, the Straits of Magellan show multi-structured ecosystems where the quality and quantity of the organic matter flux towards the bottom change according to the local geomorphology and current dynamics. Moreover, the three-dimensional assemblages of suspension-feeders, so common in Antarctic shallow waters, seem to be absent in the Magellan area. In particular sponges, gorgonarians and bryozoans play a secondary role inside the Straits of Magellan, where polychaetes (60% and molluscs (9-10% are dominant on soft bottoms, and where they reach high values in density and biomass

  18. Particulate matter and plankton dynamics in the Ross Sea Polynya of Terra Nova Bay during the Austral Summer 1997/98

    Science.gov (United States)

    Fonda Umani, S.; Accornero, A.; Budillon, G.; Capello, M.; Tucci, S.; Cabrini, M.; Del Negro, P.; Monti, M.; De Vittor, C.

    2002-07-01

    The structure and variability of the plankton community and the distribution and composition of suspended particulate matter, were investigated in the polynya of Terra Nova Bay (western Ross Sea) during the austral summer 1997/1998, with the ultimate objective of understanding the trophic control of carbon export from the upper water column. Sampling was conducted along a transect parallel to the shore, near the retreating ice edge at the beginning of December, closer to the coast at the beginning of February, and more offshore in late February. Hydrological casts and water sampling were performed at several depths to measure total particulate matter (TPM), particulate organic carbon (POC), biogenic silica (BSi), chlorophyll a (Chl a) and phaeopigment (Phaeo) concentrations. Subsamples were taken for counting autotrophic and heterotrophic pico- and nanoplankton and to assess the abundance and composition of microphyto- and microzooplankton. Statistical analysis identified two major groups of samples: the first included the most coastal surface samples of early December, characterized by the prevalence of autotrophic nanoplankton biomass; the second included all the remaining samples and was dominated by microphytoplankton. With regard to the relation of the plankton community composition to the biogenic suspended and sinking material, we identified the succession of three distinct periods. In early December Phaeocystis dominated the plankton assemblage in the well-mixed water column, while at the retreating ice-edge a bloom of small diatoms (ND) was developing in the lens of superficial diluted water. Concentrations of biogenic particulates were generally low and confined to the uppermost layer. The very low downward fluxes, the near absence of faecal pellets and the high Chl a/Phaeo ratios suggested that the herbivorous food web was not established yet or, at least, was not working efficiently. In early February the superficial pycnocline and the increased water

  19. Ross, Robert. – A Concise History of South Africa. Cambridge, Cambridge University Press, 1999, 219 p., index, bibl. (« Cambridge Concise Histories »).

    OpenAIRE

    Creusat, Laurence

    2003-01-01

    Robert Ross, maître de conférence à l'université de Leiden, écrit et publie depuis vingt ans des ouvrages sur l'histoire de l'Afrique du Sud. Son dernier livre qui prend comme point de départ l'introduction de l'agriculture dans ce pays, il y a de cela 1 500 ans, et le conclut avec l'arrivée à la présidence de N. Mandela, est un bel exemple d'étude synthétique réussie sur l'histoire de ce pays. Le mérite de ce livre est de montrer clairement comment le passé explique le présent, commen...

  20. Effect of addition of pollen and propolis to feeding mixtures during the production of broiler chickens ROSS 308 to the colour of thigh and breast muscle and pH determination

    Directory of Open Access Journals (Sweden)

    Hana Šulcerová

    2011-01-01

    Full Text Available The aim of this study was to verify influence of pollen and propolis added to the feeding mixture in the diet of broiler chickens Ross 308 to colour breast and thigh muscles in relation to pH values. A total of 198 units 1 day-old Ross 308 hybrid combinations divided into 6 groups according to the feeding mixtures were investigated on meat quality characteristics changes. Muscle colour of breasts and thighs was measured and compared with pH in three times, pH1, pH2 and pHult. Feeding with various additions to feeding mixtures for chicken showed small impact of low content (200 or 300 mg.kg−1 propolis to meat quality characteristics. Higher effect on breast quality was found in group with 400 mg.kg−1 pollen addition to feed, there was faster and deeper postmortal process level found, although without negative impact on meat quality. Meat colour and muscle pH of chicken in this experiment was pale and had low ultimate pH. In these parameters were found correlation. Chicken meat of this experimental animals was paler and had the lowest ultimate pH, altough in group with higher addition it wasn’t confirmed. Raw meat breast pH was significantly lower than thigh muscles in all measurement time. Various feeding especially pollen had significant impact on breast colour which was paler although without negative displays attended of pH decline. Significant relationships are between breast and thigh L*a*b* values and pH1 respectively.

  1. Kolmemõõtmeline Eesti kunst Szentendre Kunstiveskis / Peeter Helme

    Index Scriptorium Estoniae

    Helme, Peeter, 1978-

    2003-01-01

    Eesti tarbekunsti näitus "Ülestähendused". Avamisel näidati Jaanus Orgusaare rõivaste, jalanõude ja peakatete kollektsiooni. Kuraatoriteks-kujundajateks rühmitus F.F.F.F. (Ketli Tiitsar, Kristi Paap, Kaire Rannik, Maria Valdma). Keldrisaalis slaidiprogramm eesti harrastuskunstnike loomingust. Péter-Pali galeriis Anu Raua põimevaipade näitus

  2. Woody Alleni komöödia Rakveres / Peeter Raudsepp

    Index Scriptorium Estoniae

    Raudsepp, Peeter, 1974-

    1999-01-01

    Rakvere Teatris esietendub 15. okt "Suveöö seksikomöödia", Woody Alleni filmistsenaariumi on näidendiks kirjutanud Jürgen Fischer, lavastab külalisena Rednar Annus, kunstnikud on Ene -Liis Semper ja Raoul Kurvitz, muusikaline kujundaja Tamur Tohver.

  3. Kaks miljonit krooni paras äraelamiseks / Peeter Raidla

    Index Scriptorium Estoniae

    Raidla, Peeter, 1955-

    2007-01-01

    Ilmunud ka: Delovõje Vedomosti 7. nov. lk. 10-11. Äripäeva koostatud dividendimiljonäride edetabelist Eesti dividendimiljonäride TOP 500. Tabel: Tänavustest esikümnemeestest neli ka varem tabeli eesotsas olnud; Lisa: Number; Metoodika. Vt. samas: Sten-Aleks Pihlaku intervjuud Ragner Matsalu, Jüri Uppini, Sulev Sisaski ja Gunnar Kobiniga

  4. Kuidas Peeter Esimene leppis Vladimir Leniniga / Jelena Skulskaja

    Index Scriptorium Estoniae

    Skulskaja, Jelena, 1950-

    2003-01-01

    Lev Tolstoi jutustuse "Saatan" ekraniseerimisest, Boriss Pasternaki romaan "Doktor Zhivago" itaalia režissööri Giacomo Campiotti ekraniseeringus ja Juri Ljubimovi Goethe "Fausti" muusikaliversioon Taganka teatris Moskvas

  5. Kanada invasioon pakub üllatusi / Peeter Riba

    Index Scriptorium Estoniae

    Riba, Peeter, 1967-

    2003-01-01

    PÖFFil linastuvaid Kanada mängufilme - Richard Kwietniowski "Mängur Mahowny" ("Owning Mahowny"), Denys Arcand'i "Barbarite sissetung" ("Les Invasions barbares"), Wiebke von Carolsfeldi "Marion Bridge" ja Thom Fitzgeraldi "Üritus" ("The Event")

  6. Intervjuu Christian Boltanskiga : suremise viisid / intervjueerinud Peeter Linnap

    Index Scriptorium Estoniae

    Boltanski, Christian, 1944-

    2011-01-01

    Prantsuse kunstnik ja fotograaf oma 1990ndate töödest, 1999. aastal Soomes toimunud näitusest "Augustiöö", mille teemaks oli surm ja maalimisest kui ruumi loomise kunstist ning põhjustest miks ta nimetab end 20. sajandi lõpu maalikunstnikuks. Lisaks valik Christian Boltanski autobiograafilisest küsitlusest "Mida nad minust mäletavad?"

  7. Suremise viisid : intervjuu Christian Boltanskiga / interv. Peeter Linnap

    Index Scriptorium Estoniae

    Boltanski, Christian, 1944-

    2007-01-01

    Prantsuse kunstnik ja fotograaf oma 1990ndate töödest, 1999. aastal Soomes toimunud näitusest "Augustiöö", mille teemaks oli surm ja maalimisest kui ruumi loomise kunstist ning põhjustest miks ta nimetab end 20. sajandi lõpu maalikunstnikuks. Lisaks valik Christian Boltanski autobiograafilisest küsitlusest "Mida nad minust mäletavad?"

  8. Intervjuu prof. Thomas W. J. Mitchelliga / intervjueerinud Peeter Linnap

    Index Scriptorium Estoniae

    Mitchell, Thomas W.J., 1942-

    2011-01-01

    Ameerika pilditeoreetik oma uurimustest, kirjanduse ja kunsti omavahelistest seostest, piltide mõjuvõimust, retoorikast ja funktsioonidest. Ka oma peamistest teostest "Iconology : Image, Text, Ideology", "Picture Theory" ja "What Do Pictures Want?"

  9. Pärnu mnt 10 maja lugu / Peeter Raidla

    Index Scriptorium Estoniae

    Raidla, Peeter, 1955-

    2009-01-01

    Tallinna Vastastikuse Krediit-Ühisuse 1912. aastal Pärnu mnt 10 ehitatud majast, mis on alates Eesti taasiseseisvumisest 1991. aastal pakkunud rohkesti kõneainet nii rendi- kui müügiobjektina, jätkuvate kohtuvaidluste teema. ASi Elias moodustamisest ja tegevusest Pärnu mnt 10 hoones ning kinnistu müügist OÜle Vemarro

  10. Romaanivõistlus 2008 - naised ruulivad! / Peeter Helme

    Index Scriptorium Estoniae

    Helme, Peeter, 1978-

    2009-01-01

    2008. a. romaanivõistlusel 1. auhinda välja ei antud. 2. auhinna võitis Milvi Martina Piiri romaan "Liblikad janus". 3. auhinna võitjaid oli kaks: Birk Rohelend romaaniga "Minu sõraline sõber" ja Marion Andra "Algolagnia". Ergutusauhinna võitnud romaanid: Liina Lüecke "Sügismüsteerium", Robert Kurvitza "Püha ja õudne lõhn", Robert Randma "Sigaret" ja Helju Petsi "Õnneõiteta sirelid"

  11. Kahe venna suured ärid / Peeter Raidla, Hanno Tomberg

    Index Scriptorium Estoniae

    Raidla, Peeter, 1955-

    1997-01-01

    Ärimeestest vendade tegevus ja nende osalusega firmad: AS BKE, AS Eferelt, AS Standard, AS Kodax, Eesti Näituste AS, Expodi-Saini AS. Ilmunud ka: Molodjozh Estonii : Kupetsheskaja Gavan 11. apr. lk. 8

  12. Pristise miljonid ajasid omanikud tülli / Peeter Raidla

    Index Scriptorium Estoniae

    Raidla, Peeter, 1955-

    2004-01-01

    Ilmunud ka: Delovõje Vedomosti 10. nov. lk. 6. Turvaseadmete firma AS-i Pristis teenitud kümned miljonid kroonid on firma asutajad tülli ajanud. Lisa: Tüliõunaks on raha; Aastaga nullist 30 miljoni kroonini; Pristis on olnud maksuameti huviorbiidis

  13. Eesti keel barbarite suus / David J. Peterson ; intervjueerinud Peeter Helme

    Index Scriptorium Estoniae

    Peterson, David J.

    2011-01-01

    USA telekanali HBO telesarjas "Troonide mäng" (mis on George R. R. Martini "Jää ja tule laulu" sarja esimese raamatu "Troonide mäng" teleekraniseering) tegeles dothraki keele loomisega keeleteadlane David J. Peterson

  14. Mida jälgida aastal 2007? / Peeter Koppel

    Index Scriptorium Estoniae

    Koppel, Peeter

    2007-01-01

    Autori hinnangul peaks investor 2007. aastal jälgima Lähis-Idas toimuvaid konflikte, oodatud majanduskasvu, võimendatust globaalses finantssüsteemis, riske nii poliitilisel kui majanduslikul tasandil ning arvestama deflatsioonilise shokiga

  15. Üle nähtamatu piiri / Peeter Linnap

    Index Scriptorium Estoniae

    Linnap, Peeter, 1960-

    2000-01-01

    Dokumentaalfilm "Esteetilistel põhjustel" : režissöör, stsenarist, kaasprodutsent ja -operaator Marko Raat : Operaator Claus Villebro : Produtsent Karl Jensen : Muusika "Borax" : Taani - Eesti 1999

  16. Novel competition 2008 - women's and genre literature / Peeter Helme

    Index Scriptorium Estoniae

    Helme, Peeter, 1978-

    2009-01-01

    2008. a. romaanivõistlusel 1. auhinda välja ei antud. 2. auhinna võitis Milvi Martina Piiri romaan "Liblikad janus". 3. auhinna võitjaid oli kaks: Birk Rohelend romaaniga "Minu sõraline sõber" ja Marion Andra "Algolagnia". Ergutusauhinna võitnud romaanid: Liina Lüecke "Sügismüsteerium", Robert Kurvitza "Püha ja õudne lõhn", Robert Randma "Sigaret" ja Helju Petsi "Õnneõiteta sirelid"

  17. Emakeele Seltsis / Peeter Päll, Mart Meri, Ellen Niit

    Index Scriptorium Estoniae

    Päll, Peeter, 1961-

    1996-01-01

    Mari Musta 75. ja Rein Kulli 70. sünnipäevale pühendatud koosolekust 8.11.1995, Soome iseseisvuspäevale pühendatud koosolekust 6.12.1995 ja üliõpilaste keeleringi 50. aastapäevale pühendatud koosolekust 8.12.1995

  18. Robert J. Aumann - matemaatikust Nobeli preemia laureaat / Peeter Puusemp

    Index Scriptorium Estoniae

    Puusemp, Peeter, 1947-

    2006-01-01

    2005. a. Nobeli preemia majanduse alal silmapaistva panuse eest mänguteooria ülesannete lahendamisse saanud Robert J. Aumannist ja D. Saari loetelu matemaatikutest - Nobeli preemia laureaatidest: John Nash'ist, Herbert Hauptman'ist, John Pople'ist, Bertrand Arthur William Russell'ist, Kenneth Joseph Arrow'ist, Gerard Debreu'ist, Leonid Vitaljevitš Kantorovitš'ist, Reinhard Selten'ist, Jan Tinbergen'ist

  19. Inimeste pension kadus LHV riskimängudes / Peeter Raidla

    Index Scriptorium Estoniae

    Raidla, Peeter, 1955-

    2007-01-01

    Ilmunud ka: Delovõje Vedomosti 17. jaan. lk. 8-9. Investeerimisfirma LHV investeeris pensionifondide raha firmasse Versio Holding, mille raskustest oldi teadlik ja mille tagajärjel kaotati 90% investeeringust. Küsimustele vastavad LHV Täiendava Pensionifondi juht Tõnno Vähk ja finantsinspektsiooni järelvalve divisjoni juht Andre Nõmm. Vt. samas: Kronoloogia; Diagramm. Vastuseks vt. Äripäev 3. apr. lk. 23

  20. [Tänapäeva heitlikus majandusmaailmas] / Peeter Koppel

    Index Scriptorium Estoniae

    Koppel, Peeter

    2010-01-01

    Majanduse seisust ja muinasjutust „Kolm põrsakest”, nii kiputakse nimetama Euroopa Liidu probleemseid riike lühendiga PIGS (Portugal, Italy, Greece, Spain). Need riigid on aastatega akumuleerinud endale tohutu võlakoormuse