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Sample records for lo kask livia

  1. Kunstnik kaardil / Margot Kask

    Index Scriptorium Estoniae

    Kask, Margot, 1974-

    2006-01-01

    14 fotograafi (nimed) maastiku mälu ja territooriumi tähendusvälju uurivast projektist "Kunstnik kaardil" Tartus Y-galeriis ja Rael Artel Gallery's Non-Profit Project Space'is. Kuraator Margot Kask

  2. Eesti ekspositsioon "Gaasitoru" Veneetsia XI arhitektuuribiennaalil / Maarja Kask, Ralf Lõoke, Neeme Külm...[jt.

    Index Scriptorium Estoniae

    2009-01-01

    Ill.: situatsiooniplaan, 3 vaadet; fotod: Reio Avaste; autorid: M. Kask, R. Lõoke (Salto), N. Külm, kuraator: I. Ruudi, komissar: L. Põdra. Eesti Kultuurkapitali peapreemia ja arhitektuuri sihtkapitali aastapreemia 2008 pälvisid M. Kask, R. Lõoke, N. Külm ja I. Ruudi

  3. Prevalence of Toxoplasma gondii antibodies in domestic (Columba livia domestica) and wild (Columba livia livia) pigeons in Niğde region, Turkey.

    Science.gov (United States)

    Karatepe, Mustafa; Kılıç, Selçuk; Karatepe, Bilge; Babür, Cahit

    2011-01-01

    The present study was conducted to investigate the prevalence of Toxoplasma gondii specific antibodies in domestic (Columba livia domestica) and wild (Columba livia livia) pigeons between October 2003-June 2004. Blood samples were collected from 216 pigeons, consisting of 105 (55 female, 50 male) domestic pigeons and 111 (53 female, 58 male) wild pigeons. The sera were tested for T. gondii antibodies using the Sabin Feldman Dye Test (SFDT). One of the 105 (0.95%) domestic pigeon and one of the 111 (0.90%) wild pigeon were found to be seropositive for T. gondii antibodies at the titer of 1:16. This is the first serological study on toxoplasmosis in the domestic and wild pigeon in the Niğde region of Turkey.

  4. Ene ja Tõnis Kask pole valikuga rahul / Tiit Tuumalu

    Index Scriptorium Estoniae

    Tuumalu, Tiit, 1971-

    2003-01-01

    Eesti Filmiajakirjanike Ühing andis auhinna Aasta film 2002 mängufilmile "Agent Sinikael" : režissöör Marko Raat. Viimane sai preemiaks 12 000 krooni. Auhinna rahastajad omanimelise fondi kaudu Eesti Rahvuskultuuri Fondi juures Ene ja Tõnis Kask peavad "Nimed marmortahvlil" väljajätmist isegi nominentide hulgast shokeerivaks

  5. Majanduse struktuur kujuneb isevoolu / Tiit Made, Rein Kask ; interv. Ester Shank

    Index Scriptorium Estoniae

    Made, Tiit, 1940-

    1999-01-01

    Riigikogu majanduskomisjoni esimees Tiit Made ja tema asetäitja Rein Kask nentisid Maailmakaubanduskeskuse klubi kokkutulekul, et kaheksa aasta jooksul ei ole Eesti valitsused suutnud ette näha, millise struktuuriga majandus peaks meie riigis kujunema

  6. Uuendusi vangistusest tingimisi ennetähtaegsel vabastamisel / Anne Rannaveski-Poola, Anne Kruusement ; kommenteerinud Kadri Kelder, ... [jt.

    Index Scriptorium Estoniae

    Rannaveski-Poola, Anne

    2007-01-01

    Alates 1. jaan. 2007 hakatakse ennetähtaegselt vanglast vabastamisel kasutama elektroonilist valvet. Lisatud: mida toovad muudatused kinnipeetavate ennetähtaegsel vabastamisel kaasa kriminaalhooldajale? Küsimusele vastavad Tartu Maakohtu kriminaalhooldusosakonna juhataja Kadri Kelder, Harju Maakohtu kriminaalhooldusosakonna juhataja Kersti Kask, käitumiskontrolli II talituse juhataja Livia Silvet ja Viru Maakohtu kriminaalhooldusosakonna kriminaahooldusametnikud Gaidi Kasu ja Anton Gontsharov

  7. Eesti Maanteemuuseumi välialad = Estonian Road Museum, outdoor areas / Ralf Lõoke, Karli Luik, Maarja Kask ; intervjueerinud Margit Mutso

    Index Scriptorium Estoniae

    Lõoke, Ralf, 1978-

    2011-01-01

    Arhitektid: Maarja Kask, Karli Luik, Ralf Lõoke, Pelle-Sten Viiburg (Salto AB). Näituse kujundajad: Malle Jürgenson, Tea Tammelaan, Krista Lepland (Laika, Belka & Strelka). Maarja Kask, Karli Luik ja Ralf Lõoke pälvisid Eesti Kultuurkapitali aastapreemia (2010) kõrgetasemelise panuse eest Eesti maa-arhitektuuri: Eesti Maanteemuuseumi välialad (kaasautor Pelle-Sten Viiburg), Sõmeru keskushoone (kaasautorid Kristiina Arusoo ja Margit Argus)

  8. Tiskre-Hansu korterelamud / Maarja Kask, Tiit Sild, Kalle Rannula...[jt.

    Index Scriptorium Estoniae

    2005-01-01

    I, II ja III korruse plaan, 4 värv. välisvaadet; projekteerija: KPME Engineering & Design, planeeringu eskiisi autorid Maarja Kask, Tiit Sild, kaasa töötas Kalle Rannula, detailplaneering: Andres Volens, Kalle Rannula, I etapi kortermajade autor Tiit Sild, kaasa töötasid Maret Volens, Andres Volens, Kristo Tihvand

  9. Koolis möödunud festival eelistas lapsi / Merit Kask, Liisi Poll

    Index Scriptorium Estoniae

    Kask, Merit

    2003-01-01

    Lõppenud Pärnu XVII dokumentaal- ja antropoloogiafilmide festivalist. Lisaks avaldavad oma arvamust rahvusvahelise žürii esimees John Russel Taylor, žürii liige Tiina Lokk ja eesti dokumentaalfilmide žürii esimees Tõnis Kask. Lisatud auhinnasaajate nimekiri

  10. Mured kodurahu kallal / Kleer Maibaum, Svea Sööt, Siilas Kask ; intervjueerinud Eeva Kumberg

    Index Scriptorium Estoniae

    Maibaum, Kleer, 1972-

    2009-01-01

    Vabakutseline näitleja Kleer Maibaum, hingamisterapeut-nõustaja, jooga- ja tantsuõpetaja Svea Sööt, ametnik Siilas Kask sellest, kuidas halvenenud majandusoludes toime tulla, millised võimalused kriisis peituvad ja kus peituvad lahendused

  11. Improved Genome Assembly and Annotation for the Rock Pigeon (Columba livia).

    Science.gov (United States)

    Holt, Carson; Campbell, Michael; Keays, David A; Edelman, Nathaniel; Kapusta, Aurélie; Maclary, Emily; T Domyan, Eric; Suh, Alexander; Warren, Wesley C; Yandell, Mark; Gilbert, M Thomas P; Shapiro, Michael D

    2018-05-04

    The domestic rock pigeon ( Columba livia ) is among the most widely distributed and phenotypically diverse avian species. C. livia is broadly studied in ecology, genetics, physiology, behavior, and evolutionary biology, and has recently emerged as a model for understanding the molecular basis of anatomical diversity, the magnetic sense, and other key aspects of avian biology. Here we report an update to the C. livia genome reference assembly and gene annotation dataset. Greatly increased scaffold lengths in the updated reference assembly, along with an updated annotation set, provide improved tools for evolutionary and functional genetic studies of the pigeon, and for comparative avian genomics in general. Copyright © 2018 Holt et al.

  12. Gaasitoru loojad: olime Veneetsia biennaali ajaloo kõige ülbemad / Ingrid Ruudi, Maarja Kask, Ralf Lõoke

    Index Scriptorium Estoniae

    Ruudi, Ingrid

    2009-01-01

    Maarja Kask, Neeme Külm, Ralf Lõoke ja Ingrid Ruudi pälvisid 11. Veneetsia arhitektuuribiennaalil eksponeeritud keskkonna- ja geopoliitilise ruumiinstallatsiooni "Gaasitoru" eest Eesti Kultuurkapitali peapreemia ja sihtkapitali preemia

  13. Molecular cloning and sequencing analysis of the interferon receptor (IFNAR-1) from Columba livia.

    Science.gov (United States)

    Li, Chao; Chang, Wei Shan

    2014-01-01

    Partial sequence cloning of interferon receptor (IFNAR-1) of Columba livia. In order to obtain a certain length (630 bp) of gene, a pair of primers was designed according to the conserved nucleotide sequence of Gallus (EU477527.1) and Taeniopygia guttata (XM_002189232.1) IFNAR-1 gene fragment that was published by GenBank. Special primers were designed by the Race method to amplify the 3'terminal cDNA. The Columba livia IFNAR-1 displayed 88.5%, 80.5% and 73.8% nucleotide identity to Falco peregrinus, Gallus and Taeniopygia guttata, respectively. Phylogenetic analysis of the IFNAR1 gene showed that the relationship of Columba livia, Falco peregrinus and chicken had high homology. We successfully obtained a Columba livia IFNAR-1 gene partial sequence. Analysis of the genetic tree showed that the relationship of Columba livia and Falco peregrinus IFNAR-1 had high homology. This result can be used as reference for further research and practical application.

  14. NO99 Põhuteater = NO99 Straw Theatre / Ralf Lõoke, Maarja Kask ; intervjueerinud Margit Mutso

    Index Scriptorium Estoniae

    Lõoke, Ralf, 1978-

    2012-01-01

    Põhuteatri arhitektid Maarja Kask, Karli Luik, Ralf Lõoke, Pelle-Sten Viiburg (Salto Arhitektid) ja Ene-Liis Semper pälvisid EK arhitektuuri sihtkapitali 2011. a. arhitektuuripreemia vormitähendustes edasi liikunud ning arhitektuurile kui sündmusele ja kohaloomele keskendunud aktsiooni eest. Konstruktor Tõnu Peipmann

  15. [Cloning and characterization of Caveolin-1 gene in pigeon, Columba livia domestica].

    Science.gov (United States)

    Zhang, Ying; Yu, Jian-Feng; Yang, Li; Wang, Xing-Guo; Gu, Zhi-Liang

    2010-10-01

    Caveolins, a class of principal proteins forming the structure of caveolae in plasmalemma, were encoded by caveolins gene family. Caveolin-1 gene is a member of caveolins gene family. In the present study, a full-length of 2605 bp caveolin-1 cDNA sequence in Columba livia domestica, which included a 537 bp complete ORF encoding a 178 amino acids long putative peptide, were obtained by using RT-PCR and RACE technique. The Columba livia domestica caveolin-1 CDS shared 80.1% - 93.4% homology with Bos taurus, Canis lupus familiaris, Gallus gallus and Rattus norvegicus. Meanwhile, the putative amino acid sequence of Columba livia domestica caveolin-1 shared 85.4% - 97.2% homology with the above species. The semi-quantity RT-PCR revealed that Caveolin-1 expressions were detectable in all the Columba livia domestica tissues and the expressional level of caveolin-1 gene was high in adipose, medium in various muscles, low in liver. These results demonstrated that Caveolin-1 gene was potentially involved in some metabolic pathways in adipose and muscle.

  16. Serological and molecular detection of Toxoplasma gondii in Columba livia hunting pigeons of AL-Qadisiyah province

    Directory of Open Access Journals (Sweden)

    Hiba Riyadth Jameel Al-abodi

    2017-07-01

    Full Text Available Toxoplasma gondii were detected and diagnosed in 80 Columba livia birds at the province of Al-Qadisiyah during the period started from January 2016 until June 2016 using latex test and rapid cassette test ,Moreover molecular diagnosis with Polymerase Chain Rraction technique for identification of B1 gene had been also used Results showed that antibodies were detected in 11 samples out of 80 (13.75%. of Columba livia pigeons in Al-Qadisiyah province, Since significant highest (P≤0.05 titration were indicated at 1/80 (36.37%,whereas the lowest titer indicated at 1/40 (9.09 and According to type of antibodies in Columba livia toxoplasmosis suspected samples using rapid test cassette, results were indicated that Six samples out of 80 (7.5% were found positive. However IgG, IgM and IgG plus IgM were found in (33.34%,(16.66 and (50 respectively with no significance difference, furthermore results of PCR technique for detection of B1 gene revealed that 5% of samples from the Columba livia were only found positive ,Moreover the B1 gene were had a molecular weight of the private 399bp.It had been concluded that Columba livia birds were found infected with T.gondii with possible transmission to human being .

  17. Wiedemanni fond 10 / Jüri Valge, Piret Järvela, Liivi Heinla, Aili Kiin ; intervjueerinud Külliki Kask

    Index Scriptorium Estoniae

    2015-01-01

    Eraalgatuslik Wiedemanni fond toetab nii eesti keele õpilasuurimusi kui ka ülikooliõpinguid, sh magistri- ja doktoriõpet. Küsimustele vastavad Wiedemanni fondi 2015. aasta stipendiaadid, eesti keele ja kirjanduse õpetajad Piret Järvela Tallinna reaalkoolist, Liivi Heinla Kadrina keskkoolist ja Aili Kiin Viljandi gümnaasiumist. Küsitles Külliki Kask

  18. 1 küsimus noorele juhile : Mida oled õppinud oma ülemustelt? / Heidi Raamat, Erki Tiivas, Jaana Lisette Kask ... [jt.

    Index Scriptorium Estoniae

    2009-01-01

    Küsimusele vastavad Viasat Baltikumi operatsioonide osakonna juhataja Heidi Raamat, Chrisal Trading OÜ juht Erki Tiivas, Tavidi turundusjuht Jaana Lisette Kask, Ajakirjade Kirjastuse avalike suhete juht Jaanika Käärst, logistikafirma DPD juht Tarmo Tael ning Singapuris juhtimist ja majandust õppinud Mikk Tamme

  19. Gastrointestinal helminths of two populations of wild pigeons (Columba livia) in Brazil.

    Science.gov (United States)

    Vaz, Frederico Fontanelli; Silva, Lidiane Aparecida Firmino da; Ferreira, Vivian Lindmayer; Silva, Reinaldo José da; Raso, Tânia Freitas

    2017-01-01

    The present study analyzed gastrointestinal helminth communities in 265 wild pigeons (Columba livia) living in the municipalities of São Paulo and Tatuí, state of São Paulo, Brazil, over a one-year period. The birds were caught next to grain storage warehouses and were necropsied. A total of 790 parasites comprising one nematode species and one cestode genus were recovered from 110 pigeons, thus yielding an overall prevalence of 41.5%, mean intensity of infection of 7.2 ± 1.6 (range 1-144) and discrepancy index of 0.855. Only 15 pigeons (5.7%) presented mixed infection. The helminths isolated from the birds were Ascaridia columbae (Ascaridiidae) and Raillietina sp. (Davaineidae). The birds' weights differed according to sex but this did not influence the intensity of infection. The overall prevalence and intensity of infection did not differ between the sexes, but the prevalence was higher among the birds from Tatuí (47.8%). The gastrointestinal helminth community of C. livia was characterized in the two areas studied and parasite homogeneity was observed over the 12 months analyzed at both locations. These results make contributions to the current literature on health aspects of wild C. livia populations.

  20. Maailma arhitektuurifestival = World Architecture Festival / Ingrid Ruudi ; kommenteerinud Maarja Kask, Karli Luik, Ralf Lõoke, Indrek Allmann, Martin Aunin

    Index Scriptorium Estoniae

    Ruudi, Ingrid, 1978-

    2011-01-01

    Barcelonas 2.-4. nov. 2011 toimunud 4. Maailma arhitektuurifestivalist (WAF). Muljeid jagavad II vooru pääsenud eesti arhitektid Maarja Kask, Karli Luik ja Ralf Lõoke AB-st Salto (Põhuteater, Sõmeru keskus), Martin Aunin (Must maja Nõmmel), Indrek Allmann AB-st Pluss (poolautonoomne saun). Üldvõitja - Media-ICT Barcelonas (Cloud 9 / Enric Ruiz-Geli)

  1. Eesti Vabariigi põhiseadus : kommenteeritud väljaanne / toimetuskolleegium: Eerik-Juhan Truuväli, Oliver Kask, Lasse Lehis, Heiki Lindpere, Uno Lõhmus, Ülle Madise, Kalle Merusk, Raul Narits, Vallo Olle, Jüri Põld, Heinrich Schneider

    Index Scriptorium Estoniae

    2002-01-01

    Kommentaaride autorid ja sisu: Sissejuhatus / Raul Narits, Heinrich Schneider, Lauri Madise. [Preambul] / Heinrich Schneider. I ptk. / Kalle Merusk, Taavi Annus, Madis Ernits, Heiki Lindpere, Lauri Madise. II ptk. / Uno Lõhmus, Taavi Annus, Madis Ernits, Oliver Kask, Eerik Kergandberg, Rait Maruste, Peeter Roosma. III ptk. / Oliver Kask. IV ptk. / Jüri Põld, Lauri Madise, Aaro Mõttus. V ptk. / Eerik-Juhan Truuväli, Ülle Madise, Jüri Põld, Urmas Reinsalu. VI ptk. / Kalle Merusk, Jüri Põld. VII ptk. / Eerik-Juhan Truuväli, Jüri Põld. VIII ptk. / Lasse Lehis. IX ptk. / Heiki Lindpere, Kristi Land, Lauri Madise, Heiki Pisuke. X ptk. / Oliver Kask, Enn Markvart, Jüri Põld. XI ptk. / Heinrich Schneider. XII ptk. / Raul Narits, Aare Reenumägi, Peeter Roosma, Enn Markvart. XIII ptk. / Uno Lõhmus, Madis Ernits, Jüri Põld. XIV ptk. / Vallo Olle, Arno Almann, Ülle Madise, Jüri Liventaal. XV ptk. / Eerik-Juhan Truuväli, Aaro Mõttus. Eesti Vabariigi põhiseaduse rakendamise seadus / Raul Narits, Peeter Roosma, Oliver Kask. Märksõnastik / koost. Ülle Madise, Peep Pruks. Kasutatud õigusaktide lühendid / koost. Virgo Saarmets. Eesti Vabariigi põhiseadus 1990-2002 : bibliograafia / koost. Maia Ruttu

  2. Gastrointestinal helminths of two populations of wild pigeons (Columba livia in Brazil

    Directory of Open Access Journals (Sweden)

    Frederico Fontanelli Vaz

    Full Text Available Abstract The present study analyzed gastrointestinal helminth communities in 265 wild pigeons (Columba livia living in the municipalities of São Paulo and Tatuí, state of São Paulo, Brazil, over a one-year period. The birds were caught next to grain storage warehouses and were necropsied. A total of 790 parasites comprising one nematode species and one cestode genus were recovered from 110 pigeons, thus yielding an overall prevalence of 41.5%, mean intensity of infection of 7.2 ± 1.6 (range 1-144 and discrepancy index of 0.855. Only 15 pigeons (5.7% presented mixed infection. The helminths isolated from the birds were Ascaridia columbae (Ascaridiidae and Raillietina sp. (Davaineidae. The birds’ weights differed according to sex but this did not influence the intensity of infection. The overall prevalence and intensity of infection did not differ between the sexes, but the prevalence was higher among the birds from Tatuí (47.8%. The gastrointestinal helminth community of C. livia was characterized in the two areas studied and parasite homogeneity was observed over the 12 months analyzed at both locations. These results make contributions to the current literature on health aspects of wild C. livia populations.

  3. Necrotizing hepatitis in a domestic pigeon (Columba livia).

    Science.gov (United States)

    Himmel, L; O'Connor, M; Premanandan, C

    2014-11-01

    An adult male domestic pigeon (Columba livia) was presented for necropsy following natural death after a period of chronic weight loss and severe intestinal ascariasis. Histopathologic examination of the liver found moderate to marked, multifocal necrotizing hepatitis with large, basophilic intranuclear inclusion bodies. Transmission electron microscopy of affected hepatocytes demonstrated numerous intra- and perinuclear icosahedral virions arranged in a lattice structure, consistent with adenoviral infection. © The Author(s) 2014.

  4. Eesti Vabariigi põhiseadus : kommenteeritud väljaanne / toimetuskolleegium: Eerik-Juhan Truuväli, Berit Aaviksoo, Oliver Kask, Lasse Lehis, Lauri Madise, Ülle Madise, Kalle Merusk, Lauri Mälksoo, Raul Narits, Vallo Olle, Peep Pruks

    Index Scriptorium Estoniae

    2008-01-01

    Kommentaaride autorid ja sisu: Sissejuhatus / Raul Narits, Lauri Madise, Heinrich Schneider. Preambul / Raul Narits, Heinrich Schneider. I ptk. / Kalle Merusk, Taavi Annus, Madis Ernits, Heiki Lindpere, Lauri Madise. II ptk. / Oliver Kask, Madis Ernits, Taavi Annus, Peeter Roosma, Rait Maruste, Eerik Kergandberg, Ivo Pilving, Uno Lõhmus, Merilin Kiviorg, Einar Vene, Ülle Madise. III ptk. / Oliver Kask. IV ptk. / Lauri Madise, Aaro Mõttus, Jüri Põld, Tiina Runthal. V ptk. / Eerik-Juhan Truuväli, Ülle Madise, Jüri Põld, Urmas Reinsalu. VI ptk. / Kalle Merusk, Jüri Põld. VII ptk. / Eerik-Juhan Truuväli, Jüri Liventaal, Jüri Põld. VIII ptk. / Lasse Lehis. IX ptk. / Kristi Land, Heiki Lindpere, Lauri Madise, Heiki Pisuke. X ptk. / Oliver Kask, Enn Markvart, Jüri Põld. XI ptk. / Ülle Madise, Janek Laidvee, Heinrich Schneider. XII ptk. / Berit Aaviksoo, Mihkel Allik, Enn Markvart, Raul Narits, Aare Reenumägi, Peeter Roosma. XIII ptk. / Raul Narits, Uno Lõhmus, Madis Ernits, Jüri Põld. XIV ptk. / Vallo Olle, Arno Almann, Jüri Liventaal, Ülle Madise. XV ptk. / Eerik-Juhan Truuväli, Aaro Mõttus. Eesti Vabariigi põhiseaduse rakendamise seadus / Oliver Kask, Raul Narits, Peeter Roosma. Eesti Vabariigi põhiseaduse täiendamise seadus / Berit Aaviksoo, Julia Laffranque, Ülle Madise, Jüri Põld. Eesti Vabariigi põhiseadus 1990-2008 : bibliograafia (seisuga september 2008) / koost. Maia Ruttu

  5. Aspectos histológicos e histoquímicos da cloaca feminina de Columba livia (Gmelin (Columbidae, Columbiformes Histological and histochemical aspects of female cloaca of Columba livia (Gmelin (Columbidae, Columbiforme

    Directory of Open Access Journals (Sweden)

    Maria Eloíza de Oliveira Teles

    2001-03-01

    Full Text Available The domestic dove Columba livia (Gmelin, 1789 is a species well adapted to Brazil and the study of its reproductive biology is part of a broad research project on birds. This essay describes the morphological aspects of the cloaca of female Columba livia, describing compartments lengthwise starting from the head such as the coprodeo, urodeo and proctodeo limited by mucosal folds. Each compartment of the cloaca presents its own morphological characteristics which differ one from the other in form, height and position of mucosal projections, kinds of tissues, presence and histological aspects of glands, presence of lymphonodus. The rectum opens into the coprodeo, the ureter opens into the oviduct and the cloacal sac opening into the proctodeo. Histochemical studies have shown the presence of glycoproteins in tissue cells and gland cells on the three segments of the cloaca.

  6. Evaluation of environmental genotoxicity by comet assay in Columba livia.

    Science.gov (United States)

    González-Acevedo, Anahi; García-Salas, Juan A; Gosálvez, Jaime; Fernández, José Luis; Dávila-Rodríguez, Martha I; Cerda-Flores, Ricardo M; Méndez-López, Luis F; Cortés-Gutiérrez, Elva I

    2016-01-01

    The concentrations of recognized or suspected genotoxic and carcinogenic agents found in the air of large cities and, in particular, developing countries, have raised concerns about the potential for chronic health effects in the populations exposed to them. The biomonitoring of environmental genotoxicity requires the selection of representative organisms as "sentinels," as well as the development of suitable and sensitive assays, such as those aimed at assessing DNA damage. The aim of this study was to evaluate DNA damage levels in erythrocytes from Columba livia living in the metropolitan area of Monterrey, Mexico, compared with control animals via comet assay, and to confirm the results via Micronuclei test (MN) and DNA breakage detection-fluorescence in situ hybridization (DBD-FISH). Our results showed a significant increase in DNA migration in animals from the area assayed compared with that observed in control animals sampled in non-contaminated areas. These results were confirmed by MN test and DBD-FISH. In conclusion, these observations confirm that the examination of erythrocytes from Columba livia via alkaline comet assay provides a sensitive and reliable end point for the detection of environmental genotoxicants.

  7. Artrópodes em ninhos de Columba livia Gmelin, 1789 (Aves, Columbidae em área urbana de Manaus, Amazonas, Brasil.

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    Guilherme Maerschner Ogawa

    2008-12-01

    Full Text Available Resumo. Foi realizado um estudo sobre artrópodes que vivem em ninhos de Columba livia Gmelin 1789, ave conhecida como pombo urbano e que nidifica em construções humanas, com o intuito de inventariar as espécies de artrópodes associadas. Foram coletados 14 ninhos de C. livia em nove bairros da área urbana de Manaus os quais foram levados ao laboratótio e colocados em um extrator do tipo Berlese-Tulgren por 12 dias, para a captura dos artrópodes. Foram encontrados 10.323 artrópodes, pertencentes a 3 subfilos, 3 classes, 14 ordens e 33famílias. Acari foi mais abundante com 7.879 indivíduos, sendo o gênero Caloglyphus Berlese, 1923, o mais representativo (75%. A maioria das espécies encontradas é detritívora. A diversidade de artrópodes foi menor em Manaus se comparada à registrada em trabalhos da região Paleártica, provavelmente por C. livia ser uma espécie exótica na fauna Neotropical. Arthropods in the nests of Columba livia Gmelin 1789 (Aves, Columbidae in the urban area of Manaus, Amazonas, Brazil. Abstract. The objective of this study was identify the arthropod fauna in nests of the urban pigeon, Columba livia Gmelin 1789 who build their nests in man-made buildings. Fourteen nests were collected in nine districts of the built up area of the city of Manaus. For twelve days, arthropods were extracted in a Berlese-Tulgren funnel. A total of 10.323 arthropods representing 3 subphyla, 3 classes, 14 orders and 33 families were detected. Acari was the most abundant group with 7879 individuals. Mites of the genus Caloglyphus Berlese, 1923, made up over 75 % of all arthropods collected. Most of the arthropods extracted are detrivorous and apterous. The diversity found in Manaus was lower than that reported for samples collected in the Palearctic Region, probably because C. livia is exotic in the Neotropical fauna. The introduction of this pigeon can be responsible for a major contact between some arthropods and humans.

  8. Morphological study of the testes of the dove Columba livia (Gmelin (Columbidae, Columbiformes

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    Sandra Maria das Graças Maruch

    1995-01-01

    Full Text Available Known as "domestic dove", the Columba livia (Gmelin, 1789 is a columbidae species widely distributed in Brazil, whose reproductive biology has been studied by many researchers. The testes of 12 Columba livia males were collected and prepared for histologic examination under an optical microscope, the results of which were analysed and photographed. The tunica albuginea that covers the testes consists of a thick, not very cellular layer of dense connective tissue. Groups of interstitial cells with typical morphological appearance and surrounded by loose, well vascularized connective tissue are observable within the organ, between the seminiferous tubules. The seminiferous tubules are thick, intensely wound and, when seen in cross section, show Sertoli cells and spermatogenic lineage cells in different stages of development. These include spermatogonia (type A, clear; type A, dark; and type B, spermatocytes I and II, spermatids, and a large number of spermatozoons. Similarities are found between the histological findings described and those reported for the testes of Columbina talpacoti (Temminck, 1811.

  9. How do seasonality and host traits influence the distribution patterns of parasites on juveniles and adults of Columba livia?

    Science.gov (United States)

    Amaral, Hugo Leonardo da Cunha; Bergmann, Fabiane Borba; Dos Santos, Paulo Roberto Silveira; Silveira, Tony; Krüger, Rodrigo Ferreira

    2017-12-01

    Parasites may influence host fitness and consequently exert a selective pressure on distinct phenotypes of the host population. This pressure can result in an evolutionary response, maintaining only individuals with certain traits in the population. The present study was aimed at identifying the morphological characteristics of juveniles and adults of Columba livia that may influence the distribution patterns of lice, Pseudolynchia canariensis and Haemoproteus columbae and how the populations of these parasites vary throughout the seasons of the year. Between July 2012 and July 2014, 377 specimens of C. livia were captured. We observed a significant increase in the mean intensities of infestation by pigeon flies and lice, as well as in species richness of ectoparasites during the warmest seasons, suggesting a reproductive synchrony between ectoparasites and host species. Bill length, body mass, and body length did not affect the infestation levels of ectoparasites on adults and juveniles of C. livia with three distinct plumage colors. In juveniles, plumage color affected only the mean intensity of infestation by lice, with Spread individuals as the most infested. This indicates that melanin in feathers was not an effective barrier against ectoparasites. Copyright © 2017 Elsevier B.V. All rights reserved.

  10. Pulluterina karachiensis sp.n. (Cestoda: Anaplocephalidae) from the Wild Pigeon Columba livia Gmelin

    OpenAIRE

    GHAZI, Rafia Rehana

    2014-01-01

    A new species, Pulluterina karachiensis, is described from the common pigeon Columba livia Gmelin in Karachi. The new species is characterized by possessing small suckers; a longer neck; fewer testes, smaller in size, and the comparatively smaller size of ova. This is the second species of the genus from Pakistan and third in the literature.

  11. Detection and molecular status of Isospora sp. from the domestic pigeon (Columba livia domestica).

    Science.gov (United States)

    Matsubara, Ryuma; Fukuda, Yasuhiro; Murakoshi, Fumi; Nomura, Osamu; Suzuki, Toru; Tada, Chika; Nakai, Yutaka

    2017-10-01

    The domestic pigeon, Columba livia domestica, is reared for meat production, as a pet, or for racing. Few reports have characterized the parasitic protists from the genus Isospora isolated from Columbiformes. We detected Isospora-like oocysts from C. livia reared for racing. The oocyst contained two sporocysts, and each sporocyst included four sporozoites. The sporulated oocysts (n=4) were spherical; their mean diameters were 25.6 (24.0-27.2)×24.7 (23.4-26.0) μm. Micropyles, polar granules, and oocyst residuum were absent. The mean length and width of the sporocysts (n=8) were 19.5 (18.5-20.5) and 11.2 (10.2-12.1) μm, respectively. Stieda and sub-Stieda bodies were observed. Single-oocyst PCR revealed two different 18S rRNA gene sequences and one 28S rRNA gene sequence in a single oocyst of Isospora sp. Based on a phylogenetic analysis of the 18S rRNA gene, the two sequences made a group which fell within a cluster of known avian Isospora species. A tree based on the 28S rRNA gene sequence indicated that sequences from the pigeon Isospora sp. fell within a cluster of avian Isospora species. Both trees failed to clarify the phylogenetic relationships among the avian Isospora species due to limited resolution. Because the morphological description of Isospora sp. is based on only four oocysts, Isospora sp. is not proposed as a novel species here. This is the first description of Isospora sp. isolated from the domestic pigeon C. livia. Copyright © 2017 Elsevier B.V. All rights reserved.

  12. Acute, fatal Sarcocystis calchasi-associated hepatitis in Roller pigeons (Columbia livia f. dom.) at Philadelphia Zoo

    Science.gov (United States)

    Four Roller pigeons (Columba livia f. dom.) at the Philadelphia Zoo died suddenly. Necropsy examination revealed macroscopic hepatitis. Microscopically, the predominant lesions were in liver, characterized with necrosis and mixed cell inflammatory response. Sarcocystis calchasi-like schizonts and fr...

  13. Lo uno y lo diverso

    Directory of Open Access Journals (Sweden)

    José Rojas Bez

    2015-01-01

    Full Text Available El arte no solo tiene ese poder para agudizar las miradas Toda creación, apreciación y educación artística está vinculada a una observación y comprensión más incisiva y honda del hombre y del mundo. Al arte y a la educación estética corresponde, pues, un importante papel en esta rica dialéctica entre lo singular y lo universal, en la creación y apreciación de lo uno en lo diverso y de la diversidad en la unidad.

  14. Ultrastructural characterization of the pulmonary cellular defences in the lung of a bird, the rock dove, Columba livia

    Science.gov (United States)

    Maina, J. N.; Cowley, H. M.

    1998-01-01

    Free (surface) avian respiratory macrophages (FARMs) were harvested by lavage of the lung/air-sac system of the rock dove, Columba livia. The presence of FARMs in the atria and infundibula was confirmed by scanning electron microscopy. The respiratory system has developed several cellular defence lines that include surface macrophages, epithelial, subepithelial and interstitial phagocytes, and pulmonary intravascular macrophages (PIMs). Hence, C. livia appears to have a multiple pulmonary cellular protective armoury. Ultrastructurally, the FARMs and the PIMs were similar to the corresponding cells of mammals. The purported high susceptibility of birds to respiratory diseases, a state that has largely been deduced from morbidities and mortalities of commercial birds, and which has chiefly been attributed to paucity of the FARMs, is not supported by the present observations.

  15. Projekt "RADAR" - teerajaja Setomaal / Ülo Kask, Martin Kikas

    Index Scriptorium Estoniae

    Kask, Ülo, 1952-

    2009-01-01

    RADAR projekt - taastuvate energiaallikate alase teadlikkuse tõstmine agro-energeetilise ahela mudelite arendamise abil. Projektis osales 7 riiki: Itaalia, Suurbritannia, Rootsi, Eesti, Läti, Horvaatia ja Bulgaaria

  16. Persistence of Antibodies to West Nile Virus in Naturally Infected Rock Pigeons (Columba livia)

    Science.gov (United States)

    Gibbs, Samantha E. J.; Hoffman, Douglas M.; Stark, Lillian M.; Marlenee, Nicole L.; Blitvich, Bradley J.; Beaty, Barry J.; Stallknecht, David E.

    2005-01-01

    Wild caught rock pigeons (Columba livia) with antibodies to West Nile virus were monitored for 15 months to determine antibody persistence and compare results of three serologic techniques. Antibodies persisted for the entire study as detected by epitope-blocking enzyme-linked immunosorbent assay and plaque reduction neutralization test. Maternal antibodies in squabs derived from seropositive birds persisted for an average of 27 days. PMID:15879030

  17. Vabadussamba parimad ideed tulid tudengitelt / Garel Püüa

    Index Scriptorium Estoniae

    Püüa, Garel

    2007-01-01

    Tallinna Vabadussamba ideekonkursil teise koha saavutanud töö "Meie inimesed" keskendus moodsa linnaruumi loomisele (autorid Marten Kaevats, Mihkel Kaevats, Ülo Kaevats, Peeter Vihma, Merit Kask ja Martin Sookael), kolmanda koha töö "Illusioon" oli abstraktsem (autorid Martin Tago, Tõnis Malkov, Kertu Tuberg ja Laura Kuusk). Kommenteerib Ülar Mark

  18. Chlamydia psittaci and C. avium in feral pigeon (Columba livia domestica) droppings in two cities in the Netherlands

    NARCIS (Netherlands)

    Burt, Sara A.; Röring, Romy E.; Heijne, Marloes

    2018-01-01

    Background: Feral pigeons (Columba livia domestica) live and breed in many city centres and contact with their droppings can be a hazard for human health if the birds carry Chlamydia psittaci. Objective: The aim of this study was to establish whether pigeon droppings in two Dutch cities (Utrecht and

  19. Mortality associated with fenbendazole administration in pigeons (Columba livia).

    Science.gov (United States)

    Gozalo, Alfonso S; Schwiebert, Rebecca S; Lawson, Gregory W

    2006-11-01

    A group of 12 domestic pigeons (Columba livia domestica) was treated for capillariasis by use of fenbendazole at 30 mg/kg orally once daily for 5 d. After treatment, 8 of the 12 pigeons exhibited signs of anorexia, lethargy, and dehydration; these birds died within 2 d after the onset of clinical signs. A total of 6 birds were necropsied, and all had unremarkable gross findings. Microscopic examination of tissues revealed acute hemorrhagic enteritis, diffuse lymphoplasmacytic enteritis, small intestinal crypt necrosis, periportal lymphoplasmacytic hepatitis, bile duct hyperplasia, and renal tubular necrosis. Erythrocytes in blood samples collected from surviving birds demonstrated polychromasia compatible with a regenerative anemia. The clinical and histopathologic findings in these pigeons were consistent with recent reports of fenbendazole toxicity in domestic pigeons and other columbiform birds.

  20. LoWMob: Intra-PAN Mobility Support Schemes for 6LoWPAN.

    Science.gov (United States)

    Bag, Gargi; Raza, Muhammad Taqi; Kim, Ki-Hyung; Yoo, Seung-Wha

    2009-01-01

    Mobility in 6LoWPAN (IPv6 over Low Power Personal Area Networks) is being utilized in realizing many applications where sensor nodes, while moving, sense and transmit the gathered data to a monitoring server. By employing IEEE802.15.4 as a baseline for the link layer technology, 6LoWPAN implies low data rate and low power consumption with periodic sleep and wakeups for sensor nodes, without requiring them to incorporate complex hardware. Also enabling sensor nodes with IPv6 ensures that the sensor data can be accessed anytime and anywhere from the world. Several existing mobility-related schemes like HMIPv6, MIPv6, HAWAII, and Cellular IP require active participation of mobile nodes in the mobility signaling, thus leading to the mobility-related changes in the protocol stack of mobile nodes. In this paper, we present LoWMob, which is a network-based mobility scheme for mobile 6LoWPAN nodes in which the mobility of 6LoWPAN nodes is handled at the network-side. LoWMob ensures multi-hop communication between gateways and mobile nodes with the help of the static nodes within a 6LoWPAN. In order to reduce the signaling overhead of static nodes for supporting mobile nodes, LoWMob proposes a mobility support packet format at the adaptation layer of 6LoWPAN. Also we present a distributed version of LoWMob, named as DLoWMob (or Distributed LoWMob), which employs Mobility Support Points (MSPs) to distribute the traffic concentration at the gateways and to optimize the multi-hop routing path between source and destination nodes in a 6LoWPAN. Moreover, we have also discussed the security considerations for our proposed mobility schemes. The performance of our proposed schemes is evaluated in terms of mobility signaling costs, end-to-end delay, and packet success ratio.

  1. LoWMob: Intra-PAN Mobility Support Schemes for 6LoWPAN

    Directory of Open Access Journals (Sweden)

    Seung-Wha Yoo

    2009-07-01

    Full Text Available Mobility in 6LoWPAN (IPv6 over Low Power Personal Area Networks is being utilized in realizing many applications where sensor nodes, while moving, sense and transmit the gathered data to a monitoring server. By employing IEEE802.15.4 as a baseline for the link layer technology, 6LoWPAN implies low data rate and low power consumption with periodic sleep and wakeups for sensor nodes, without requiring them to incorporate complex hardware. Also enabling sensor nodes with IPv6 ensures that the sensor data can be accessed anytime and anywhere from the world. Several existing mobility-related schemes like HMIPv6, MIPv6, HAWAII, and Cellular IP require active participation of mobile nodes in the mobility signaling, thus leading to the mobility-related changes in the protocol stack of mobile nodes. In this paper, we present LoWMob, which is a network-based mobility scheme for mobile 6LoWPAN nodes in which the mobility of 6LoWPAN nodes is handled at the network-side. LoWMob ensures multi-hop communication between gateways and mobile nodes with the help of the static nodes within a 6LoWPAN. In order to reduce the signaling overhead of static nodes for supporting mobile nodes, LoWMob proposes a mobility support packet format at the adaptation layer of 6LoWPAN. Also we present a distributed version of LoWMob, named as DLoWMob (or Distributed LoWMob, which employs Mobility Support Points (MSPs to distribute the traffic concentration at the gateways and to optimize the multi-hop routing path between source and destination nodes in a 6LoWPAN. Moreover, we have also discussed the security considerations for our proposed mobility schemes. The performance of our proposed schemes is evaluated in terms of mobility signaling costs, end-to-end delay, and packet success ratio.

  2. Lo público, lo estatal y la democracia

    Directory of Open Access Journals (Sweden)

    Osvaldo Iazzetta

    2008-09-01

    Full Text Available La calidad de lo público no resulta indistinta para juzgar la calidad de una democracia, pues la vitalidad y diversidad de aquel espacio delimita sus posibilidades de despliegue y profundización. Sin embargo, lo público se nutre tanto de la energía proveniente de la asociatividad, participación, deliberación y auto-organización de la sociedad civil, como de la universalidad que el Estado debe asegurar para tornar efectiva la promesa democrática. En esa zona confluyen por consiguiente, energías provenientes de lo público-social como de lo público-estatal. Sin desconocer esa complejidad, en este trabajo nos centraremos en este último aspecto, entendiendo esta elección como una vía de entrada –entre otras posibles– para reflexionar sobre algunas tareas democráticas pendientes.

  3. Mycoplasma columbinum Isolated From a Racing Pigeon ( Columba livia ) With Arthritis.

    Science.gov (United States)

    Hellebuyck, Tom; Garmyn, An; De Cooman, Lien; Boyen, Filip; Pasmans, Frank; Martel, An

    2014-09-01

    A juvenile racing pigeon ( Columba livia ) was presented with drooping of the wing and inability to fly. On physical examination, the right shoulder joint was swollen. The pigeon was euthanatized and submitted for necropsy. An excessive amount of fibrin was present in the canalis triosseus with severe arthritis of the affected shoulder joint. A pure growth of Mycoplasma-like colonies was obtained on microbiological culture of the shoulder joint. A 16S ribosomal RNA gene-specific polymerase chain reaction assay was performed on the isolate and revealed 100% similarity with Mycoplasma columbinum . Although infectious arthritis in homing pigeons is primarily associated with paratyphoid and Streptococcus gallolyticus infection, clinical practitioners should consider the potential role of Mycoplasma columbinum in arthritis in pigeons.

  4. DE LO INERME A LO VIVO, DE LO VIRTUAL A LO VIRTUOSO: LAS REDES COMUNICACIONALES ENTRE CIENTÍFICOS

    Directory of Open Access Journals (Sweden)

    Juan José Plata Cavides

    2002-08-01

    Full Text Available El tema que quiero abordar es la comunicación entre científicos, algo que es esencial al ethos del investigador, pero que hoy por hoy tiende a suplirse por quimeras técnicas y mediáticas. Quiero poner a consideración de hecho evidente a partir de la experiencia vivida que señala como solamente a partir de la participación en redes comunicacionales vivas es que emerge la posibilidad de generar conocimiento nuevo en cualquier dominio Las reglas del juego de con validación de conocimientos excluyen argumentos tales como la autoridad o el poder o similares, sin dejar de lado las múltiples evidencias sobre las dificultades y errores que emergen en los procesos comunicacionales. En una pregunta ¿Cuál es nuestra capacidad para comunicarnos y comunicar? Tres son los retos que quiero formular: El reto de pasar de la VISIÓN de los objetos a La COMPRENSIÓN de los procesos (contextos de sentido El reto de pasar de la MIRADA a las partes a la INTERACCIÓN entre las partes y las características emergentes del sistema de relaciones. (recursividad, auto-organización El reto de pasar de la CONTEMPLACIÓN de la palabra y la gramática a la PRAXIS de las redes conversacionales vivas. En suma el reto que propongo es el reto de pasar de lo inerte a lo vivo, de lo virtual a lo virtuoso, de la red conversacional muerta a la red conversacional viva, de la robótica y el cyborg a lo distintivamente humano. Pues, el conocimiento se juega como estrategia adaptativa al entorno, se juega localmente, y en su vivencia es más que el simple hecho de almacenar o hacer circular información.

  5. Noored loojad ootasid avatumat võistlust / Agnes Kuus

    Index Scriptorium Estoniae

    Kuus, Agnes

    2007-01-01

    Tallinna kavandatava vabadussõja monumendi konkursi kolmest paremast tööst. Esikoht tööle "Libertas" - Kadri Kiho, Andri Laidre, Anto Savi, Rainer Sternfeld. II koht tööle "Meie inimesed" - Marten Kaevats, Alvin Järving, Mihkel Kaevats, Ülo Kaevats, Merit Kask, Martin Sookael, Peeter Vihma. III koht tööle "Illusioon" - Martin Tago, Kertu Tuberg, Tõnis Malkov, Laura Kuusk

  6. Redução fechada e fixação esquelética externa tipo II para o tratamento de fraturas de tibiotarso em pombos domésticos (Columba livia Closed reduction and type-II external skeletal fixation for treatment of tibiotarsus fractures in domestic pigeons (Columba livia

    Directory of Open Access Journals (Sweden)

    Marcelo Meller Alievi

    2001-12-01

    Full Text Available A redução fechada e o fixador esquelético externo tipo II foram avaliados para o tratamento de fraturas de tibiotarso em pombos domésticos (Columba livia. Foram utilizadas doze aves adultas. Os pombos foram anestesiados com a associação de xilazina e cetamina e, em seguida, foi realizada fratura do tibiotarso direito através de pressão digital sobre a diáfise do membro. Quatro pinos de Kirschner, dois proximais e dois distais ao foco da fratura, foram inseridos através de ambas as corticais ósseas e, após redução fechada da fratura, conectados externamente por duas barras de acrílico autopolimerizável, uma na face lateral e outra na face medial do membro. Em cinco aves, foi observado radiograficamente desvio ósseo angular, porém, a função do membro não foi afetada. O tempo médio e o desvio padrão para a cicatrização óssea foram 24,8 ± 4,89 dias. Os resultados demonstram que a redução fechada e o fixador esquelético externo tipo II são efetivos para o tratamento de fraturas de tibiotarso em pombos domésticos (Columba livia.The aim of this study was to evaluate the use of closed reduction and type-II external skeletal fixation for treatment of tibiotarsus fractures in domestic pigeons (Columba livia. Twelve adult domestic pigeons were used. Anesthesia was induced with xylazine and ketamine hydrochloride; the right tibiotarsus was manually fractured by digital pressure applied at the mid-diaphysis. Four Kirschner wires were placed through both cortices of the bone, two proximal and two distal to the fracture site, and, after closed reduction of the fracture, they were stabilized by two acrilic bars, one in the lateral and another in the medial surface of the tibiotarsus. Abnormalities in bone angulation were observed radiographically in five birds; however, the function of the limb was not noticeably impaired. The mean time ± standard deviation for fracture healing was 24.8 ± 4.89 days. The results of this

  7. Lo irreductible social y lo irreductible psíquico

    Directory of Open Access Journals (Sweden)

    Vincent Gaulejac, de

    2017-06-01

    Full Text Available Con base en la reconstrucción de las polaridades explicativas -lo irreductible social y lo irreductible psíquico-que atraviesan a las ciencias sociales, este texto propone trascender los modelos antagónicos y excluyentes. El objetivo es instaurar en el centro de la reflexión la idea de la dialktica existencial que restituye al sujeto tanto el contexto socio-histórico en el cual está localizado como el deseo y la singularidad que lo constituyen en productor de la afirmación de su individualidad y su historicidad.

  8. Leer lo estético desde lo político

    Directory of Open Access Journals (Sweden)

    Verónica Peñafiel

    2013-06-01

    Full Text Available En el Ecuador, y específicamente en la vida política del país, el teatro ha jugado un papel más importante del que se le ha reconocido. Pensar lo estético relacionado con lo político, puede ser una interesante clave de lectura para el teatro quiteño y, me arriesgo a afirmar, para el teatro a secas. Este análisis no se lo hará desde el teatro político, se pretende, más bien, analizar la dimensión política del mismo y de la relación entre teatro y política. Dicha dimensión política ha tomado diversas caras. Con los matices posibles, ha pasado de las salas a la calle, del costumbrismo a lo grotesco, de las compañías a los grupos. Comprender estos matices con la óptica de lo político puede dar pistas para articular una lógica estética del teatro quiteño

  9. Lo público y lo privado en Educación

    Directory of Open Access Journals (Sweden)

    J. Félix ANGULO RASCO

    2016-01-01

    Full Text Available El presente trabajo pretende delinear qué se entiende por escuela pública o, dicho de otra manera, qué hace pública a una escuela. Para ello, se apoya en tres ejes básicos: el sentido estructural, el sentido político y el sentido pedagógico. El sentido estructural pregunta por la pertenencia de la escuela. La pertenencia privada de un centro escolar lo inhabilita para ser un centro público. Lo privado en este caso estaría por encima de lo público y lo común. Por el contrario, la pertenencia pública no ha de asimilarse a la pertenencia estatal. Lo público ha de hacer referencia a lo común. El sentido político indica que una escuela pública sirve al bien común y, especialmente, a los más necesitados. La escuela pública en ese sentido es un espacio de encuentro de la sociedad y además el único espacio educativo para aquellos sectores que no tendrían otra posibilidad. Por último, el sentido pedagógico es el que, al fin y al cabo, da sentido pleno a la escuela pública, en cuanto que supone colmar el derecho de las generaciones y la ciudadanía a la cultura y al conocimiento.

  10. ¿Es posible combinar lo tradicional y lo moderno?

    Directory of Open Access Journals (Sweden)

    Hugo Celso Felipe Mansilla

    2001-01-01

    Full Text Available En contra de las actuales tendencias posmodérnicas, el autor postula una simbiosis entre los elementos positivos de lo premoderno y los correspondientes de la modernidad. Cree posible rescatar las llamadas tradiciones razonable, y combinarlas con lo positivo de la modernidad. Estos factores positivos de la tradicionalidad serían la religión en cuanto fuente de sentido y consuelo, la monarquía y la aristocracia hereditarias como modelos institucionales que nos unen con la historia, y la concepción del arte y la literatura como una estética fundamentada en lo bello. Esfuerzos sincretistas similares constituyen gran parte de la historia universal.

  11. Acute Lameness in a Roller Pigeon ( Columba livia ) with Multicentric Lymphosarcoma.

    Science.gov (United States)

    Williams, Susan M; Williams, Robert J; Gogal, Robert M

    2017-06-01

    A 3-yr-old adult female roller pigeon ( Columba livia ) used as part of a breeding pair for an ongoing research study presented with acute left limb lameness. Palpation of the left leg and region revealed a large lump near the coxofemoral joint. The bird was able to ambulate in the cage, but would not brood her hatchling. The bird was humanely euthanized and necropsy was performed. Grossly, multiple large white to pale tan nodules were noted in the pancreas, lung, rib cage, intestines, and unilaterally in the left kidney. Microscopic examination of the various organs revealed neoplastic proliferation of round cells consistent with lymphoblasts. Immunohistochemistry was performed with the use of antibodies to CD3, CD79a, CD20, and CD21 to phenotype the cells. The results indicated that the neoplastic infiltrating cells were predominantly of T-cell origin.

  12. Den umulige hage: Rom og tid i hagemotivet i Livias villa

    Directory of Open Access Journals (Sweden)

    Hege Olaussen

    2015-12-01

    Full Text Available The article discusses representations of time and space in the frescoes in the garden room of Empress Livia's villa at Prima Porta, near Rome. The frescoes, dated to ca 30–20 B.C., decorates an underground chamber in a vast villa-complex and show an "impossible garden" in that its vegetation is simultaneously and continuously flowering, without any realistic connection to time. Through analysis of the vegetation's spatial organization, the representation of birds and the chamber's placement in the villa-complex, the article examines the significance of the garden, be it real or imaginary, as an arena for instilling and expressing Roman civic values and duties. It addresses the potential relevance of the villa's imperial connection and questions whether the frescoes are to be read as expressions of "art of the state" or "state of the art".

  13. Lo privado de lo público para jóvenes universitarios en Colombia

    Directory of Open Access Journals (Sweden)

    Victoria Eugenia Pinilla Sepúlveda

    2008-01-01

    un afrontamiento manipulador. Lo público se caracteriza por una tensión constante, entre fuerzas instituidas en los ámbitos familiar, educativo y social, que imponen formas de comportamiento, normas y valores que conforman un orden establecido, y las posibilidades de cambio que se van fraguando y que generan movimiento frente a lo instituido. En medio de esta coexistencia de fuerzas que conviven y se contraponen, aparecen los jóvenes dando prioridad al "sí mismo", a lo subjetivo sobre lo colectivo, en una urgente búsqueda de autodeterminación como un reclamo directo por su reconocimiento en un ámbito de lo público que los relega a la periferia.

  14. Helminth-bacteria interaction in the gut of domestic pigeon Columba livia domestica.

    Science.gov (United States)

    Biswal, Debraj; Nandi, Anadi Prasad; Chatterjee, Soumendranath

    2016-03-01

    The present paper is an attempt to study the interaction between the helminth parasite and bacteria residing in the gut of domestic pigeon, Columba livia domestica. Biochemical and molecular characterization of the gut bacterial isolate were done and the isolate was identified as Staphylococcus sp. DB1 (JX442510). The interaction of Staphylococcus sp. with Cotugnia cuneata, an intestinal helminth parasite of domestic pigeon was studied on the basis of the difference between 'mean worm burden' of antibiotic treated infected pigeons and infected pigeons without any antibiotic treatment. The ANOVA and Tukey tests of the data obtained showed that antibiotic treatment reduced the mean worm burden significantly. The biochemical properties of Staphylococcus sp. DB1 (JX442510) also showed a mutualistic relationship with the physiology of C. cuneata.

  15. Lo real y lo virtual en las redes electrónicas

    Directory of Open Access Journals (Sweden)

    Francisco Ficarra

    2015-01-01

    Full Text Available Se ha considerado que la expansión de las redes electrónicas produciría una igualdad económica entre los seres humanos, sin embargo esto es solo una utopía. El autor comenta lo ocurrido en lo real y lo virtual desde los años 60. La posibilidad de alcanzar un equilibrio entre ofertas de nuevos servicios y necesidades auténticas de la sociedad es una tarea difícil, pero el esfuerzo vale la pena para no caer en una especie de miniserie civilizada.

  16. Estonia katastroofis hukkunute omaste seisukohad ja palve seoses USA presidendi George W. Bushi visiidiga

    Index Scriptorium Estoniae

    2006-01-01

    Estonia protsessiühingu esimehe Helje Kaskeli ja Estonia Hukupõhjuste Väljaselgitamise Mittetulundusühingu esimehe Ülo Veide pöördumises president Toomas Hendrik Ilvese poole tuuakse esile katastroofis hukkunute omaste seisukohad. Ilmunud ka: Kesknädal 29. nov. 2006, lk. 4-5, pealk.: Ilves, avita! Estonia katastroofis hukkunute omaste palvekiri Toomas Hendrik Ilvesele; Vaba Eesti Sõna 30. nov. 2006, lk. 3, 10, pealk.: Avalik kiri Eesti Vabariigi presidendile Toomas H. Ilvesele

  17. Manipulation of primary sex ratio in birds: lessons from the homing pigeon (Columba livia domestica).

    Science.gov (United States)

    Goerlich-Jansson, Vivian C; Müller, Martina S; Groothuis, Ton G G

    2013-12-01

    Across various animal taxa not only the secondary sex ratio but also the primary sex ratio (at conception) shows significant deviations from the expected equal proportions of sons and daughters. Birds are especially intriguing to study this phenomenon as avian females are the heterogametic sex (ZW); therefore sex determination might be under direct control of the mother. Avian sex ratios vary in relation to environmental or maternal condition, which can also affect the production of maternal steroids that in turn are involved in reproduction and accumulate in the developing follicle before meiosis. As the proximate mechanisms underlying biased primary sex ratio are largely elusive, we explored how, and to what extent, maternal steroid hormones may be involved in affecting primary or secondary sex ratio in clutches of various species of pigeons. First we demonstrated a clear case of seasonal change in sex ratio in first eggs both in the Rock Pigeon (Columba livia) and in a related species, the Wood Pigeon (Columba palumbus), both producing clutches of two eggs. In the Homing Pigeon (Columba livia domestica), domesticated from the Rock Pigeon, testosterone treatment of breeding females induced a clear male bias, while corticosterone induced a female bias in first eggs and we argue that this is in line with sex allocation theory. We next analyzed treatment effects on follicle formation, yolk mass, and yolk hormones, the latter both pre- and post-ovulatory, in order to test a diversity of potential mechanisms related to both primary and secondary sex ratio manipulation. We conclude that maternal plasma hormone levels may affect several pre-ovulatory mechanisms affecting primary sex ratio, whereas egg hormones are probably involved in secondary sex ratio manipulation only.

  18. Acute, fatal Sarcocystis calchasi-associated hepatitis in Roller pigeons (Columba livia f. dom.) at Philadelphia Zoo.

    Science.gov (United States)

    Trupkiewicz, J G; Calero-Bernal, R; Verma, S K; Mowery, J; Davison, S; Habecker, P; Georoff, T A; Ialeggio, D M; Dubey, J P

    2016-01-30

    Four Roller pigeons (Columba livia f. dom.) at the Philadelphia Zoo died suddenly. Necropsy examination revealed macroscopic hepatitis. Microscopically, the predominant lesions were in liver, characterized with necrosis and mixed cell inflammatory response. Sarcocystis calchasi-like schizonts and free merozoites were identified in liver. Transmission electron microscopy confirmed that schizonts were in hepatocytes. A few schizonts were in spleen. PCR using S. calchasi-specific primers confirmed the diagnosis. Neither lesions nor protozoa were found in brain and muscles. This is the first report of acute visceral S. calchasi-associated sarcocystosis in naturally infected avian hosts. Published by Elsevier B.V.

  19. Osteossíntese de úmero por xenoenxerto ósseo preservado em mel em pombos domésticos (Columba livia

    Directory of Open Access Journals (Sweden)

    Gaiga Leandro Haczkiewicz

    2003-01-01

    Full Text Available Este experimento teve por objetivo avaliar clínica, histológica e radiograficamente o emprego de fíbula e tíbia canina, preservadas em mel, no tratamento de fratura transversa diafisária de úmero em pombos domésticos (Columba livia. Foram estudados 14 pombos. A indução e a manutenção da anestesia foi feita com halotano e a fratura foi realizada na diáfise do úmero direito com serra oscilatória, e, logo após, estabilizada por xenoenxerto ósseo inserido dentro do canal medular e associado a fio de aço interfragmentar. O tempo médio e o desvio padrão para restabelecimento do vôo foi de 24,81 + 3,65 dias.O tempo médio e o desvio padrão para a consolidação óssea foram de 41 + 4,74 dias. Uma ave não apresentou consolidação óssea. Ocorreu reabsorção do xenoenxerto aos 180 dias. A técnica proposta é eficiente para o tratamento de fratura de úmero em pombos domésticos (Columba livia. Os resultados obtidos nesse experimento demonstram que o mel é adequado como meio de preservação de xenoenxerto ósseo cortical.

  20. Change detection by rhesus monkeys (Macaca mulatta) and pigeons (Columba livia).

    Science.gov (United States)

    Elmore, L Caitlin; Magnotti, John F; Katz, Jeffrey S; Wright, Anthony A

    2012-08-01

    Two monkeys (Macaca mulatta) learned a color change-detection task where two colored circles (selected from a 4-color set) were presented on a 4 × 4 invisible matrix. Following a delay, the correct response was to touch the changed colored circle. The monkeys' learning, color transfer, and delay transfer were compared to a similar experiment with pigeons. Monkeys, like pigeons (Columba livia), showed full transfer to four novel colors, and to delays as long as 6.4 s, suggesting they remembered the colors as opposed to perceptual based attentional capture process that may work at very short delays. The monkeys and pigeons were further tested to compare transfer with other dimensions. Monkeys transferred to shape and location changes, unlike the pigeons, but neither species transferred to size changes. Thus, monkeys were less restricted in their domain to detect change than pigeons, but both species learned the basic task and appear suitable for comparative studies of visual short-term memory. 2012 APA, all rights reserved

  1. Lo privado de lo público para jóvenes universitarios en Colombia

    Directory of Open Access Journals (Sweden)

    Victoria Eugenia Pinilla Sepúlveda

    2008-10-01

    Full Text Available La investigación busca comprender los significados que tienen “lo público” y las relaciones adulto-joven para un grupo de jóvenes universitarios en sus acciones cotidianas y a partir de las narrativas de sus experiencias. Es un estudio hermenéutico que analiza las narrativas en el contexto de la dialéctica de la comprensión y la explicación propuesta por Ricoeur. Aborda lo generacional, las relaciones adulto-joven y lo público, desde algunos aportes de la sociología y la teoría política como los de Mannheim, Martin Criado, Corsten, Arendt, Habermas y Fraser. Así mismo despliega la fundamentación teórica de la narrativa como opción que posibilita el acercamiento a los significados de un grupo de jóvenes universitarios. La categoría relaciones adulto-joven muestra, más que encuentros, desencuentros entre ambas generaciones, caracterizados por un control al que los jóvenes reaccionan con una subordinación pasiva, o con un afrontamiento manipulador. Lo público se caracteriza por una tensión constante, entre fuerzas instituidas en los ámbitos familiar, educativo y social, que imponen formas de comportamiento, normas y valores que conforman un orden establecido, y las posibilidades de cambio que se van fraguando y que generan movimiento frente a lo instituido. En medio de esta coexistencia de fuerzas que conviven y se contraponen, aparecen los jóvenes dando prioridad al “sí mismo”, a lo subjetivo sobre lo colectivo, en una urgente búsqueda de autodeterminación como un reclamo directo por su reconocimiento en un ámbito de lo público que los relega a la periferia.

  2. Lo que uno pretende que sea

    OpenAIRE

    Da Pieve, Enzo

    2017-01-01

    Si bien la escritura es, de manera teórica, una manifestación de la actividad lingüística humana que posee ciertos rasgos de intencionalidad y contextualidad de lo verbal, es necesario obstinarse en una búsqueda más profunda de la importancia de la escritura. Es fundamental hacer un análisis minucioso, tanto de lo formal como de lo emocional, lo contextual, lo social, lo artístico. La escritura es un mundo por descubrir. Centro de Investigación en Lectura y Escritura (CILE)

  3. LO íntimo, lo doméstico y lo público: representaciones sociales y estilos de vida en la España ilustrada

    Directory of Open Access Journals (Sweden)

    Mónica BOLUFER PERUGA

    2009-12-01

    Full Text Available RESUMEN: A partir de los textos autobiográficos, correspondencia y otros escritos de diversos personajes vinculados al reformismo ilustrado en la España del siglo xviii, este trabajo estudia los modos en que en sus representaciones de la sociedad y sus imágenes de sí mismos se articulaban los ámbitos de lo íntimo, lo doméstico y lo público, poniendo de relieve las diferencias que este engarce presentaba para hombres y mujeres, tanto en lo social como en lo personal, así como la significativa evolución experimentada a lo largo de los últimos decenios del siglo xvín y en los primeros años del xix.ABSTRACT: Based on autobiographical writings, correspondence and other works of men and women linked to enlightened reformism in eighteenth-century Spain, this paper studies how they played with the notions of intimacy, domesticity and public life when representing models of social organization and building self images. Differences between men and women experiences and languages are underlined, as well as changes during the last decades of the eighteenth century and the beginning of the nineteenth century.

  4. Osteossíntese de úmero em pombos domésticos (Columba livia associando-se pinos metálicos e polimetilmetacrilato intramedulares após osteotomia diafisária Humerus osteosynthesis using intramedullary pins and polymethylmethacrylate in domestic pigeons (Columba livia

    Directory of Open Access Journals (Sweden)

    M.M. Alievi

    2008-08-01

    Full Text Available Foram utilizadas 28 aves adultas, separadas aleatoriamente em quatro grupos. Os pombos foram anestesiados com isoflurano para a realização da osteotomia diafisária transversa do úmero direito. No grupo I, a osteossíntese foi realizada associando-se dois pinos de Kirschner e polimetilmetacrilato, intramedulares; no grupo II, os pinos de Kirschner foram substituídos por pinos de Schanz; no grupo III, foram utilizados apenas dois pinos de Kirschner; e, no grupo IV, apenas dois pinos de Shanz. Os tempos médios para a consolidação óssea foram de 29±4,04 dias no grupo I; 24±5,29 dias no grupo II; 33±3,74 dias no grupo III; e 32,9±5,21 dias no grupo IV. Foi observada migração dos pinos em 42,9% dos animais do grupo I, em 0% nos do grupo II, em 85,7% nos do grupo III, e em 28,6% nos do grupo IV. Em duas aves dos grupos I, III e IV notou-se incapacidade de voar. Os resultados demonstram que a associação de dois pinos de Schanz e polimetilmetacrilato, ambos intramedulares, é um método efetivo para osteossíntese de úmero em pombos domésticos (Columba livia, proporcionando rápida consolidação óssea e mínimas complicações.Twenty-eight adult domestic pigeons (Columba livia were randomly divided into four groups of seven birds each. Anesthesia was performed with isoflurane and oxygen, and an osteotomy of the right humerus midshaft was performed with an electric cutter. On the sequence, one of the following treatments was chosen: group I, two Kirschner pins and polymethylmethacrylate intramedullary; group II, two Schanz pins and polymethylmethacrylate intramedullary; group III, two Kirschner pins only; and group IV, two Schanz pins only. The mean time ± standard deviation for fracture healing was 29±4.04 days in group I; 24±5.29 days in group II; 33±3.74 days in group III; 32.9±5.21 days in group IV. Pin migration was observed in 42.9% of the group I animals, 0% of group II, 85.7% of group III, and 28.6% of group IV. Two

  5. Screening for several potential pathogens in feral pigeons (Columba livia in Madrid

    Directory of Open Access Journals (Sweden)

    Ballesteros Carlos

    2010-06-01

    Full Text Available Abstract Background Pathogens with the zoonotic potential to infect humans, such as Campylobacter jejuni, Campylobacter coli and Chlamydophila psittaci, can be found in feral pigeons (Columba livia. Given the high density of these birds in the public parks and gardens of most cities, they may pose a direct threat to public health. Methods A total of 118 pigeons were captured in three samplings carried out in 2006-2007 in public parks and gardens in Madrid, Spain. Standard haematological and morphological analyses were carried out on the pigeons. PCR was used to screen for the presence of Campylobacter jejuni, C. coli and Chlamydophila psittaci. Positive samples were confirmed by DNA sequencing. Results The analyses demonstrated a high prevalence of Chlamydophila psittaci (52.6% and Campylobacter jejuni (69.1% among the birds captured. In contrast, Campylobacter coli was rarely detected (1.1%. Conclusions Pigeons in Madrid can carry Chlamydophila psittaci and Campylobacter jejuni. They may be asymptomatic or subclinical carriers of both pathogens.

  6. Screening for several potential pathogens in feral pigeons (Columba livia) in Madrid

    Science.gov (United States)

    2010-01-01

    Background Pathogens with the zoonotic potential to infect humans, such as Campylobacter jejuni, Campylobacter coli and Chlamydophila psittaci, can be found in feral pigeons (Columba livia). Given the high density of these birds in the public parks and gardens of most cities, they may pose a direct threat to public health. Methods A total of 118 pigeons were captured in three samplings carried out in 2006-2007 in public parks and gardens in Madrid, Spain. Standard haematological and morphological analyses were carried out on the pigeons. PCR was used to screen for the presence of Campylobacter jejuni, C. coli and Chlamydophila psittaci. Positive samples were confirmed by DNA sequencing. Results The analyses demonstrated a high prevalence of Chlamydophila psittaci (52.6%) and Campylobacter jejuni (69.1%) among the birds captured. In contrast, Campylobacter coli was rarely detected (1.1%). Conclusions Pigeons in Madrid can carry Chlamydophila psittaci and Campylobacter jejuni. They may be asymptomatic or subclinical carriers of both pathogens. PMID:20569487

  7. Monitoring air pollution at Mohammedia (Morocco): Pb, Cd and Zn in the blood of pigeons (Columba livia).

    Science.gov (United States)

    Kouddane, N; Mouhir, L; Fekhaoui, M; Elabidi, A; Benaakame, R

    2016-05-01

    The concentrations of Pb, Cd and Zn were investigated in the blood of pigeons (Columba livia) in order to assess the degree of pollution by heavy metal. For this, wild city pigeons were caught at four different locations in Mohammedia classified according to their industrial activity and road traffic density. Significant difference in heavy metal concentrations were observed between sites studied, the highest lead and cadmium levels were found in industrial area and center town, while the highest zinc level was found in the less contaminated area. These results indicate that the industrial activities and the road traffic are the most important source of pollution.

  8. 77 FR 50185 - LoCorr Fund Management, LLC and LoCorr Investment Trust; Notice of Application

    Science.gov (United States)

    2012-08-20

    ... Fund Management, LLC and LoCorr Investment Trust; Notice of Application August 14, 2012. AGENCY.... Applicants: LoCorr Fund Management, LLC (``LFM'' or the ``Adviser'') and LoCorr Investment Trust (the ``Trust... Mary Kay Frech, Branch Chief, at (202) 551-6821 (Division of Investment Management, Office of...

  9. Poe y lo grotesco moderno

    Directory of Open Access Journals (Sweden)

    David Roas

    2014-10-01

    Full Text Available Lo grotesco es una categoría estética que combina el humor y lo terrible (en sus muy diversas acepciones. Desde su primera manifestación carnavalesca, en la que la risa tiene un claro matiz festivo, lo grotesco ha ido evolucionando hacia posiciones donde, sin perder su dimensión humorística, se ha potenciado el componente siniestro, macabro, incluso terrorífico. Algunos cuentos de Edgar Allan Poe nos ofrecen una interesante encarnación de esa visión moderna de lo grotesco, con objetivos y formas variadas, que van desde la parodia y la sátira, a la manifestación más absurda y delirante de dicha categoría. Su análisis y comentario servirá también para alejar esos relatos de la órbita de lo fantástico, donde algunos críticos, equivocadamente, los han situado.

  10. Lo Strategic Management Accounting

    OpenAIRE

    G. INVERNIZZI

    2005-01-01

    Il saggio indaga gli aggregati informativi e gli elementi che compongono lo strategic management accounting. Sono quindi analizzate le funzioni svolte nei diversi stadi del processo di gestione strategica osservando il suo ruolo all’interno del management accounting. Infine sono approfonditi i rapporti fra i livelli della gestione strategica e lo strategic management accounting.

  11. LO PÚBLICO O LO PRIVADO: UN PRESUPUESTO DE VIRTUD EN ARISTÓTELES

    Directory of Open Access Journals (Sweden)

    Iván Cadavid

    2010-01-01

    Full Text Available Uno de los temas coyunturales de toda la teoría política del estagirita es el de lo público versus lo privado, desde el cual puede catalogarse la virtud o el vicio de un gobierno. Pero, entiéndase bien, para Aristóteles no puede existir una política buena o mala, que no devenga de una ética que la determine.De este modo, el tema de la virtud ética del gobernante, que es quienestá llamado a elegir entre lo público y lo privado, determina no solo su virtud sino también el futuro de una comunidad política. Pero aquí surge el problema, pues puede pensarse que si se privilegia al individuo se descuida a la sociedad, y a contrario sensu, si se privilegia la sociedad, se descuida al individuo. ¿Cómo sortear este problema? Ésta y otras cuestiones parecidas son las que se pretenden resolver en este artículo.

  12. Redes sociales, lo público y lo político en construcción

    Directory of Open Access Journals (Sweden)

    Mauricio Velasco

    2013-03-01

    Full Text Available Si reconocemos que las transformaciones políticas conducen a las transformaciones en los espacios mediáticos y tecnológicos –y no al contrario, en una deificación tecnológica- las redes sociales serían una manifestación del surgimiento de los nuevos actores del siglo XXI, que tienen una forma diferente de organización -y expresión- política. Son actores que, además, responden a la irrupción de lo cultural en lo político o que plantean la ‘lucha’ cultural como una dimensión política. Lo cultural incluye aquello que se expresa fuertemente en las redes sociales: género, derechos, ambiente e incluso arte, pero también una postura ya no solo nacional, sino global y mundial con respecto a lo político.

  13. Organization of ascending auditory pathways in the pigeon (Columba livia) as determined by autoradiographic methods

    International Nuclear Information System (INIS)

    Correia, M.J.; Eden, A.R.; Westlund, K.N.; Coulter, J.D.

    1982-01-01

    A mixture of tritiated proline and fucose was injected into the labyrinthine endolymphatic space of 5 white king pigeons (Columba livia). Using standard autoradiographic techniques, the authors observed transsynaptic labeling in ascending auditory pathways to the level of the mesencephalon. Auditory system structures, ipsilateral to the injection site, which labeled heavily were the cochlear nerve, the magnocellular and angular nuclei, and the superior olive. Those ipsilateral structures which were slightly labeled were the lateral lemniscus and the dorsal part of the lateral mesencephalic nucleus. Contralateral structures which labeled were the superior olive, lateral lemniscus, and dorsal part of the lateral mesencephalic nucleus. The results of this study suggest that ascending auditory pathways (to the level of mesencephalon) in the pigeon are more similar to those described for mammals in general than previously thought. (Auth.)

  14. Invasion of Flukes of the Echinostomatidae Family in Racing Pigeon ( Columba livia var. domestica) Lofts.

    Science.gov (United States)

    Ledwoń, Aleksandra; Dolka, Beata; Piasecki, Tomasz; Dolka, Izabella; Szeleszczuk, Piotr

    2016-06-01

    Over 4 years, only two known cases of fluke invasions were diagnosed in racing pigeons ( Columba livia ) originating from different regions of Poland. In both cases, the invasion was characterized by a very high mortality (approximately 70%), and the source of the infestation was snails of the Lymnaeidae family eaten by pigeons. Fluke invasions in pigeons are extremely rare and to date have not been described in Poland. Therefore, the occurrence of the symptoms of hemorrhagic diarrhea and sudden deaths of either adult pigeons or nestlings were suspected to be associated with poisoning. Autopsy revealed an invasion of flukes causing hemorrhagic enteritis. Renal failure and spleen atrophy were also found in the birds. Using molecular biology techniques, infestation with the fluke Echinostoma revolutum was determined in the second case.

  15. Organization of ascending auditory pathways in the pigeon (Columba livia) as determined by autoradiographic methods

    Energy Technology Data Exchange (ETDEWEB)

    Correia, M.J.; Eden, A.R.; Westlund, K.N.; Coulter, J.D. (Texas Univ., Galveston (USA). Medical Branch)

    1982-02-25

    A mixture of tritiated proline and fucose was injected into the labyrinthine endolymphatic space of 5 white king pigeons (Columba livia). Using standard autoradiographic techniques, the authors observed transsynaptic labeling in ascending auditory pathways to the level of the mesencephalon. Auditory system structures, ipsilateral to the injection site, which labeled heavily were the cochlear nerve, the magnocellular and angular nuclei, and the superior olive. Those ipsilateral structures which were slightly labeled were the lateral lemniscus and the dorsal part of the lateral mesencephalic nucleus. Contralateral structures which labeled were the superior olive, lateral lemniscus, and dorsal part of the lateral mesencephalic nucleus. The results of this study suggest that ascending auditory pathways (to the level of mesencephalon) in the pigeon are more similar to those described for mammals in general than previously thought.

  16. El dolor y lo sagrado

    Directory of Open Access Journals (Sweden)

    Tornos Cubillo, Andrés

    2002-04-01

    Full Text Available Not available

    En este trabajo no se trata del dolor mismo, sino de cómo se ha planteado el problema del dolor en relación con la experiencia de lo sagrado, entre personas y grupos que sufrían. Se recuerdan primero algunos hechos que tienen que ver con esta relación y luego se desarrolla lo que estos hechos sugieren: el dolor es un destino que nos sitúa en la perspectiva de nuestra mortalidad y finitud, y solamente en la elaboración libre de este límite se da la verdadera aceptación del mundo de Dios. En relación con lo sagrado el dolor marca sagradamente y crea un destino. Esto es lo importante.

  17. Paramyxovirus-1 in feral pigeons (Columba livia) in Ontario

    Science.gov (United States)

    Johnston, Kathleen M.; Key, Douglas W.

    1992-01-01

    Paramyxovirus-1 (PMV-1) infection was diagnosed in racing pigeons in Ontario during 1985, but it was not until January 1989, that the virus was isolated from feral pigeons (Columba livia) in this province. During an 18 month period beginning January 1988, a total of 43 feral pigeons was submitted to the Wildlife Diseases Laboratory, Pathology Department, Ontario Veterinary College. A history of neurological signs accompanied most of the birds. Tissues from 29 birds were submitted for PMV-1 isolation. Allantoic inoculation of embryonated chicken eggs yielded PMV-1 in 10 of the pigeons submitted. On the basis of histological criteria, we believe that 12 other birds were also infected with PMV-1. Gross pathological changes were unremarkable. Lymphplasmacytic interstitial nephritis was observed histologically in all birds from which PMV-1 was isolated. Other lesions seen, in decreasing frequency of occurrence, were lymphoplasmacytic interstitial hepatitis and multifocal hepatic necrosis, lymphoplasmacytic interstitial pancreatitis, nonsuppurative encephalitis and myelitis. The existence of PMV-1 in feral pigeons poses a potential threat to the poultry population since there is ample opportunity for mingling with poultry under open housing management. There is also a concern that pigeons may harbor the virus, perhaps in the kidney, and become chronic carriers and potential long-term disseminators of the disease. ImagesFigure 1.Figure 2. PMID:17424132

  18. Lo fantástico europeo y lo fantástico latinoamericano

    OpenAIRE

    Arcila Buendía, Luz Betty

    2016-01-01

    Tesis doctoral inédita leída en la Universidad Autónoma de Madrid, Facultad de Filosofía y Letras, Departamento de Lingüística, Lenguas Modernas, Lógica y Tª de la Ciencia y Tª de la Literatura y Literatura Comparada. Fecha de lectura: 17-06-2016 En esta tesis reconocimos las diferencias y similitudes entre lo fantástico europeo y lo fantástico latinoamericano mediante la categorización de los rasgos de la narración fantástica a partir de las aportaciones teóricas de Tzvetan Todorov,...

  19. Lo que decimos es

    Directory of Open Access Journals (Sweden)

    Victoria Elena González M.

    2003-10-01

    Full Text Available La vigencia dela cosmovisión maya, el poder de la palabra y la recuperación del sentido en la simbología son tres características que identifican al movimiento Zapatista y que lo proyectan mucho más allá de las denuncias sobre la explotación y la pobreza hechas por tantos movimiento sociales y tantas guerrillas a lo largo de la historia.

  20. Espacio y subjetividad. Orden social desde lo privado y lo público

    OpenAIRE

    Graciela Vélez Bautista

    2005-01-01

    En este artículo se plantea la relación entre subjetividad, espacio y género como uno de los enfoques que explican la identificación de los hombres con el espacio público y de las mujeres con el espacio privado, desde una perspectiva cultural e histórica, cuya huella en la subjetividad prevalece a pesar de las transformaciones modernas en la concepción de lo femenino y masculino, así como de lo privado y público.

  1. A study of feral pigeon Columba livia var. in urban and suburban areas in the city of Jena, Germany

    Directory of Open Access Journals (Sweden)

    Ferman, L. M.

    2010-06-01

    Full Text Available A population of feral pigeons, Columba livia var. was conducted in the city of Jena, Germany, from July to December 2007. Daily censuses were conducted by walking ten transects in a selected area of the city, five transects in built up areas and five in the suburbs. Pigeon population density was higher in urban areas than in suburbs but differences were not significant. Main behavioural activities recorded were resting, preening, flying, eating, sunning and roosting. Regular locations of activities were rooftops and roof edges in urban areas, and rooftops, eaves on balconies in suburban areas. The plumage phenotype most frequently recorded in both areas was Blue bar.

  2. Differential effects of visual context on pattern discrimination by pigeons (Columba livia) and humans (Homo sapiens).

    Science.gov (United States)

    Kelly, Debbie M; Cook, Robert G

    2003-06-01

    Three experiment examined the role of contextual information during line orientation and line position discriminations by pigeons (Columba livia) and humans (Homo sapiens). Experiment 1 tested pigeons' performance with these stimuli in a target localization task using texture displays. Experiments 2 and 3 tested pigeons and humans, respectively, with small and large variations of these stimuli in a same-different task. Humans showed a configural superiority effect when tested with displays constructed from large elements but not when tested with the smaller, more densely packed texture displays. The pigeons, in contrast, exhibited a configural inferiority effect when required to discriminate line orientation, regardless of stimulus size. These contrasting results suggest a species difference in the perceptionand use of features and contextual information in the discrimination of line information.

  3. Parasites of Columba livia (Aves: Columbiformes) in Tenerife (Canary Islands) and their role in the conservation biology of the laurel pigeons.

    Science.gov (United States)

    Foronda, P; Valladares, B; Rivera-Medina, J A; Figueruelo, E; Abreu, N; Casanova, J C

    2004-09-01

    The prevalence and intensity of the parasites from 50 wild doves (Columba livia) from the city of Santa Cruz de Tenerife, in the island of Tenerife (Canary Archipelago), were studied. The following ectoparasites were found in apparently healthy pigeons (prevalences are shown in percentage (%) and mean intensities with their standard deviations): the acari Dermanyssus gallinae (De Geer, 1778) (6, 241.0 +/- 138.9) and Tinaminyssus melloi Fain, 1962 (10%, 218.3 +/- 117.3); the louses, Columbicola columbae Linnaeus, 1758 (100%, 111.4 +/- 76.8) and Campanulotes bidentatus Scopoli, 1763 (94%, 48.4 +/- 26.6); and the pigeon fly, Pseudolynchia canariensis Macquart, 1839 (36%, 6.2 +/- 1.6). The endoparasites we found were: a haemoprotozoan species, Haemoproteus columbae Kruze, 1890 (82%, 14.8 +/- 10.3 per 1000); coccidian oocysts, Eimeria sp. (50%, 0.2 x 10(3) +/- 1.7 x 10(3) per gr); a cestode species Raillietina micracantha (Fuhrmann, 1909) López Neyra, 1947 (44%, 12.3 +/- 9.4); and four nematode species, Tetrameres (Tetrameres) fissispina (Diesing, 1861) Travassos, 1915 (4%, 99.5 +/- 34.1), Synhimantus (Dispharynx) spiralis (Molin, 1858) (8%, 46.8 +/- 11.6), Ascaridia columbae (Gmelin, 1790) Travassos, 1913 (40%, 8.4 +/- 8.8) and Aonchotheca sp. (18%, 6.0 +/- 3.1). Several species detected in our study can be pathogens for C. bollii and C. junoniae, which are endemic pigeons of the Canary Islands, considered endangered species. Parasites (ectoparasites, protozoa and helminths) of C. livia found in Tenerife and others from wild and farm birds in the island were considered as healthy controls.

  4. Ruumist animatsioonfilmis / Ülo Pikkov

    Index Scriptorium Estoniae

    Pikkov, Ülo, 1976-

    2006-01-01

    Animafilmi visuaalsest keskonnast,selle osast filmi süžee edastamisel. Artiklis viited ka Juri Lotmanile ("Filmisemiootika", Varrak, 2004), Platonile, Ülo Soosterile (Ilja Kabakov "Ülo Soosteri piltidest" Kunst, 1996), Martin Heideggerile ("Kunstiteoste algupära"), Arthur Schopenhauerile. Näited filmidest "Lõvikuningas" (R. Allers, R., Minkoff) ja "Kes lavastas süüdi Roger Rabbiti?" (R. Zemeckis)

  5. Description of the celiac artery in domestic pigeons (Columba livia

    Directory of Open Access Journals (Sweden)

    Cibele Geeverghese

    2012-06-01

    Full Text Available This paper aimed to define the origin and distribution of the celiac artery and its collateral branches in 15 fowls from the Columba livia species, which were obtained from the Zoonosis Control Center of Brasilia, Brazil. In order to mark the arterial system of the specimens, the left brachiocephalic trunk was canullated and a colored water-latex solution was injected there. Afterwards, fowls were fixed in a 10% v/v formaldehyde solution and dissected with appropriate equipment, presenting the results described in this paper. The celiac artery originated from the ventral face of the descendent aorta. The first collateral branch arose from the celiac artery itself, forming the esophageal artery. Then, the celiac artery has bifurcated into two branches, named left and right branches of the celiac artery. The left branch emitted the proventricular ventral artery, followed by the splenic arteries, proventricular dorsal artery, and the left hepatic artery. The left branch has bifurcated into two branches, known as ventral and left gastric arteries. The right branch emitted the right hepatic artery, followed by the ileal artery and the right gastric artery. Finally, the right branch turned into the pancreaticoduodenal artery. Our findings showed a great similarity with the avian lineages of the Gallus gallus species, except for the lack of ileocecal artery, cystic branches, and dorsal gastric artery.

  6. Buoyancy and similarity of the swimming of Manta birostris(Elasmobranchii: Myliobatidae) with the flying cycle of Columba livia(Aves: Columbidae)

    OpenAIRE

    Meza Vélez, Iván

    2013-01-01

    Se analizó la física de la flotación en la mantarraya Manta birostrisy se comparó el nado con el ciclo de vuelo de la paloma doméstica Columba livia, con la finalidad de encontrar similitudes y diferencias en las locomociones y las leyes físicas que intervienen. Se demostró que uno de los dos ciclos de nado estudiados de esta especie posee tres de las cuatro fases principales del ciclo de vuelo de la paloma doméstica. También se demostró un “efecto paracaídas” en M. birostris, el cual le ...

  7. Implicit learning in cotton-top tamarins (Saguinus oedipus) and pigeons (Columba livia).

    Science.gov (United States)

    Locurto, Charles; Fox, Maura; Mazzella, Andrea

    2015-06-01

    There is considerable interest in the conditions under which human subjects learn patterned information without explicit instructions to learn that information. This form of learning, termed implicit or incidental learning, can be approximated in nonhumans by exposing subjects to patterned information but delivering reinforcement randomly, thereby not requiring the subjects to learn the information in order to be reinforced. Following acquisition, nonhuman subjects are queried as to what they have learned about the patterned information. In the present experiment, we extended the study of implicit learning in nonhumans by comparing two species, cotton-top tamarins (Saguinus oedipus) and pigeons (Columba livia), on an implicit learning task that used an artificial grammar to generate the patterned elements for training. We equated the conditions of training and testing as much as possible between the two species. The results indicated that both species demonstrated approximately the same magnitude of implicit learning, judged both by a random test and by choice tests between pairs of training elements. This finding suggests that the ability to extract patterned information from situations in which such learning is not demanded is of longstanding origin.

  8. Lo registral civil desde lo electoral

    OpenAIRE

    Arlette Bolaños Barquero

    2018-01-01

    En este trabajo se aborda la naturaleza jurídica del Registro Civil de Costa Rica y se intenta proveer elementos para comprender la decisión de los constituyentes, en 1949, acerca de su adscripción en definitiva al Tribunal Supremo de Elecciones (también lo llamaremos TSE) y de cómo, con el devenir del tiempo y en la práctica actual, se ha estrechado la relación e interdependencia entre este organismo y el TSE, para la correcta ejecución de las tareas que se deben cumplir en las diferentes di...

  9. De lo invisible y lo cotidiano. Familias y discapacidad

    Directory of Open Access Journals (Sweden)

    Sandra Araya Umaña

    2007-01-01

    Full Text Available La construcción social de la realidad comporta un pensamiento dicotómico que asocia la discapacidad con el par normal – anormal lo que favorece procesos de exclusión social de las personas con discapacidad y sus familias. A su vez, el concepto de familia se finca en un modelo construido social y culturalmente que privilegia la subordinación de otras formas de organización familiar pues este modelo es el que se considera normal. Tanto el concepto de familia como el de discapacidad contienen una carga ideológica cuya pretensión es la prescripción y con ella lo que se favorece es la proscripción. A partir de la teoría de las representaciones sociales, este artículo aborda las dinámicas que surgen de la vinculación de ambos conceptos con el fin de evidenciar los caminos recorridos y los que aun falta recorrer para el logro de una sociedad inclusiva.

  10. Pele Erupting on Lo

    Science.gov (United States)

    2001-01-01

    This image of Jupiter's moon, lo, was taken by the Chandra X-Ray Observatory (CXO). Shown here is the most extreme example of the effect of tidal forces as Lo is being pulled by massive Jupiter on one side and by the outer moons Europa, Callisto, and Ganymede on the other. The opposing tidal forces alternately squeeze and stretch its interior, causing the solid surface to rise and fall by about 100 meters. The enormous amount of heat and pressure generated by the resulting friction creates colossal volcanoes and fractures on the surface of this moon.

  11. Keystone Life Orientation (LO) teachers: Implications for educational ...

    African Journals Online (AJOL)

    Keystone Life Orientation (LO) teachers: Implications for educational, social, and ... characteristics and support networks needed by keystone Life Orientation (LO) ... In this study “keystone” refers to LO teachers who make a positive impact in ...

  12. Parasites of Columba livia (Aves: Columbiformes in Tenerife (Canary Islands and their role in the conservation biology of the Laurel pigeons

    Directory of Open Access Journals (Sweden)

    Foronda P.

    2004-09-01

    Full Text Available The prevalence and intensity of the parasites from 50 wild doves (Columba livia from the city of Santa Cruz de Tenerife, in the island of Tenerife (Canary Archipelago, were studied. The following ectoparasites were found in apparently healthy pigeons (prevalences are shown in percentage (% and mean intensities with their standard deviations: the acari Dermanyssus gallinae (De Geer, 1778 (6 241 .0 ± 138.9 and Tinaminyssus melloi Fain, 1962 (10 %, 218.3 ± 117.3; the louses, Columbicola columbae Linnaeus, 1758 (100 %, 111.4 ± 76.8 and Campanulotes bidentatus Scopoli, 1763 (94 %, 48.4 ± 26.6; and the pigeon fly, Pseudolynchia canariensis Macquart, 1839 (36 %, 6.2 ± 1.6. The endoparasites we found, were: a haemoprotozoan species, Haemoproteus columbae Kruze, 1890 (82 %, 14.8 ± 10.3 per 1000; coccidian oocysts, Eimeria sp. (50 %, 0.2 x 103 ± 1.7 x 103 per gr; a cestode species Raillietina micracantha (Fuhrmann, 1909 López Neyra, 1947 (44 %, 12.3 ± 9.4; and four nematode species, Tetrameres (Tetrameres fissispina (Diesing, 1861 Travassos, 1915 (4 %, 99.5 ± 34,1, Synhimantus (Dispharynx spiralis (Molin, 1858 (8 %, 46. 8 ± 11.6, Ascaridia columbae (Gmelin, 1790 Travassos, 1913 (40 %, 8.4 ± 8.8 and Aonchotheca sp. (18 %, 6.0 ± 3.1. Several species detected in our study can be pathogens for C. bollii and C. junoniae, which are endemic pigeons of the Canary Islands, considered endangered species. Parasites (ectoparasites, protozoa and helminths of C. livia found in Tenerife and others from wild and farm birds in the island were considered as healthy controls.

  13. Kas teie arvates tuleks Ülejõe pargid Emajõe vasakkaldal taashoonestada? / intervjueerinud Ivi Drikkit ja Jüri Saar

    Index Scriptorium Estoniae

    2011-01-01

    Vastasid: Mati Tolmoff, Veljo Ipits, Toomas Savi, Verni Loodmaa, Väino Kull, Toomas Kapp, Triin Anette Kaasik, Kristjan Karis, Hele Everaus, Margot Fjuk, Janika Mölder, Hannes Astok, Jaak Adamsoo, Martin Parmas, Toivo Kabanen, Oleg Nesterenko, Tõnu Ints, Piret Uluots, Peep Peterson, Marju Lauristin, Jarno Laur, Arno Arukask, Ülo Veldre, Toomas Jürgenstein, Veera Sirg, Maie Pastik, Elmut Paavel, Avo Rosenvald, Toivo Maimets, Peeter Tulviste, Joel Luhamets, Jüri Kõre, Ants Kask, Enn Tarto, Tarmo Punger, Merle Jääger, Vladimir Šokman, Boris Habramov, Jevgenia Lindevaldt, Harri Jallajas, Natalja Trošina, Olev Raju, Nikolai Põdramägi

  14. EL ESPACIO ANEXO ENTRE LO ARTIFICIAL Y LO NATURAL / The annexed space between the natural and the artificial

    Directory of Open Access Journals (Sweden)

    Juan José Tuset Davó

    2011-11-01

    Full Text Available RESUMEN En la ciudad contemporánea, lo público está perdiendo relevancia respecto a lo privado. Presenciamos, además, una insistencia en encontrar y recuperar el equilibrio entre ambos. Ante la pregunta de cuál es la forma adecuada que la arquitectura da a los espacios donde lo público encuentra su lugar, vemos que a lo largo de la modernidad, en las utopías socialistas del siglo XIX, en los experimentos de vivienda social europea, oculto en la ciudad suburbana norteamericana, en los revisionismos de los años 70 y en la nueva vivienda colectiva de los años 90, existen unos espacios anexos a la arquitectura que pretenden complementarla y corregir la progresiva sustitución de lo público por lo privado. Actualmente, el activismo pasivo urbano aprovecha cualquier oportunidad en la ciudad para reivindicar el encuentro colectivo. Este planteamiento radica en la firme voluntad de diseñar escenarios urbanos donde lo público encuentre acomodo. Para ello, la constitución del suelo como un plano moldeable acompañado por una cobertura arbórea nos ofrece las condiciones esenciales para que la gente se encuentre bien en un lugar. Entre lo artificial y lo natural, es posible pensar que hay un espacio anexo arquitectónico que se abre a los acontecimientos imprevistos para que tenga lugar otro sentido de lo público. SUMMARY In the contemporary city, what is public is losing importance with respect to what is private. Witness also, an insistence on finding and recovering the balance between them. The appropriate way that architecture makes spaces for what is public can be seen throughout modernity: in the socialist utopias of the nineteenth century; in the European social housing experiments; hidden in the North American suburban town; in the revisionism of the 70’s, and, in the new collective housing of the 90’s, there are spaces annexed to the architecture which are intended to complement and correct the progressive change from public to

  15. О питании сизого голубя Columba livia сочными плодами древесных растений в Архангельске

    OpenAIRE

    АНДРЕЕВ ВАЛЕРИЙ АРКАДЬЕВИЧ

    2014-01-01

    Recopilación de observaciones de la Paloma bravía (Columba livia) realizadas durante numerosas salidas de campo a diferentes enclaves de las provincias de Valladolid y Burgos, entre fechas anteriores al 27 de junio de 1948, y 1956. Compilation of observations of the Rock Pigeon (Columba livia) achieved through many field trips to different habitats of the provinces of Valladolid and Burgos, prior to the period between the 27th of June of 1948, and 1956.

  16. Modeling the Energy Performance of LoRaWAN.

    Science.gov (United States)

    Casals, Lluís; Mir, Bernat; Vidal, Rafael; Gomez, Carles

    2017-10-16

    LoRaWAN is a flagship Low-Power Wide Area Network (LPWAN) technology that has highly attracted much attention from the community in recent years. Many LoRaWAN end-devices, such as sensors or actuators, are expected not to be powered by the electricity grid; therefore, it is crucial to investigate the energy consumption of LoRaWAN. However, published works have only focused on this topic to a limited extent. In this paper, we present analytical models that allow the characterization of LoRaWAN end-device current consumption, lifetime and energy cost of data delivery. The models, which have been derived based on measurements on a currently prevalent LoRaWAN hardware platform, allow us to quantify the impact of relevant physical and Medium Access Control (MAC) layer LoRaWAN parameters and mechanisms, as well as Bit Error Rate (BER) and collisions, on energy performance. Among others, evaluation results show that an appropriately configured LoRaWAN end-device platform powered by a battery of 2400 mAh can achieve a 1-year lifetime while sending one message every 5 min, and an asymptotic theoretical lifetime of 6 years for infrequent communication.

  17. Modeling the Energy Performance of LoRaWAN

    Directory of Open Access Journals (Sweden)

    Lluís Casals

    2017-10-01

    Full Text Available LoRaWAN is a flagship Low-Power Wide Area Network (LPWAN technology that has highly attracted much attention from the community in recent years. Many LoRaWAN end-devices, such as sensors or actuators, are expected not to be powered by the electricity grid; therefore, it is crucial to investigate the energy consumption of LoRaWAN. However, published works have only focused on this topic to a limited extent. In this paper, we present analytical models that allow the characterization of LoRaWAN end-device current consumption, lifetime and energy cost of data delivery. The models, which have been derived based on measurements on a currently prevalent LoRaWAN hardware platform, allow us to quantify the impact of relevant physical and Medium Access Control (MAC layer LoRaWAN parameters and mechanisms, as well as Bit Error Rate (BER and collisions, on energy performance. Among others, evaluation results show that an appropriately configured LoRaWAN end-device platform powered by a battery of 2400 mAh can achieve a 1-year lifetime while sending one message every 5 min, and an asymptotic theoretical lifetime of 6 years for infrequent communication.

  18. Cryptococcus spp. isolation from excreta of pigeons (Columba livia) in and around Monterrey, Mexico.

    Science.gov (United States)

    Canónico-González, Yolanda; Adame-Rodríguez, Juan Manuel; Mercado-Hernández, Roberto; Aréchiga-Carvajal, Elva Teresa

    2013-01-01

    The presence of Cryptococcus spp. has been reported in Mexico's capital city; however, to our knowledge there are no reports of its presence in the state of Nuevo León located in northeast Mexico. This is presumed to be because the hot and dry climate in this region does not favor cryptococcal proliferation. This study confirmed the presence of C. neoformans and C. albidus in 20% (10/50) of randomly selected fecal samples of pigeons (Columba livia) in the Monterrey metropolitan area. The presence of this yeast in the state of Nuevo León is proof of its adaptation to the typically hot climate of the area and is consistent with recent reviews of cryptococcosis cases in several local hospitals. The two species were identified and characterized through microbiological tests and molecular identification by DNA extraction and PCR amplification of highly conserved 18S ribosomal DNA using ITS1 and ITS2 as target regions. The PCR products were sequenced and compared with those reported in GenBank.

  19. Posconflicto y el retorno a lo comunitario

    Directory of Open Access Journals (Sweden)

    Gil, María Fernanda

    2016-09-01

    Full Text Available El presente ejercicio reflexivo y crítico es expresión del proyecto de investigación que se viene adelantando: Enfoque pedagógico del desarrollo humano para la ciudadanía crítica-activa y la no-violencia en las organizaciones comunitarias de zona de ladera, de la ciudad de Santiago de Cali, el cual busca tejer desde un diálogo con los diversos saberes comunitarios, una propuesta pedagógica que acompañe a fundamentar ética y políticamente gobernabilidades que desde el desarrollo humano tenga como preocupación la dignificación de la vida. En este orden de ideas se planteará como el desarrollo humano lleva a pensarse el concepto de necesidad más allá de la carencia, en el momento que invita a realizar un retorno a los procesos de autonomía y subjetividad con la comunidades, mirando como la pedagogía crítica a través de la palabra acto, se constituye en una de las operadoras de tal ejercicio, que pasa por hacerla de la palabra, actos de coherencia con lo que acontece en los ámbitos cotidianos, donde las lógicas son el construir comunidades de abajo hacia arriba y no a la inversa. Por ello dicho ejercicio del desarrollo humano que rescate las autonomías comunitarias con el acompañamiento de lo pedagógico, puestas de cara al momento del proceso de paz y particularmente al posconflicto hace un llamado del retorno a lo comunitario, como aquellos procesos singulares de tejer propuestas venidas de lo cotidiano, de lo local, que generadas desde lógicas del sentir, restituyan comunidades constructoras de sus propios destinos, donde no tengan cabida lógicas racionales que sólo miden el impacto del avance tecnológico científico, donde se olvida el sentido de tener una existencia en libertad y convivencia mutua de lo humano con la naturaleza, lo cual quizás obligue a deconstruir formas de pensar donde la palabra este en coherencia con lo que se dice y de hace.

  20. Modeling the Energy Performance of LoRaWAN

    OpenAIRE

    Casals, Lluís; Mir, Bernat; Vidal, Rafael; Gomez, Carles

    2017-01-01

    LoRaWAN is a flagship Low-Power Wide Area Network (LPWAN) technology that has highly attracted much attention from the community in recent years. Many LoRaWAN end-devices, such as sensors or actuators, are expected not to be powered by the electricity grid; therefore, it is crucial to investigate the energy consumption of LoRaWAN. However, published works have only focused on this topic to a limited extent. In this paper, we present analytical models that allow the characterization of LoRaWAN...

  1. Lo Transindividual: de Simondon a Marx

    Directory of Open Access Journals (Sweden)

    Daniel Alvaro

    Full Text Available RESUMEN: El presente artículo trata de lo transindividual, un concepto fundamental en la teoría de la individuación elaborada por Gilbert Simondon (1924-1989, y de su vinculación con ciertas proposiciones de Karl Marx que tratan del individuo y la sociedad. Entre ambos autores existe una relación directa, evidenciada en cada uno de los textos donde Simondon hace mención a Marx y al marxismo en general. Pero también existe una relación indirecta, para nada evidente, que surge menos de lo que Simondon dice acerca de Marx que de lo que ciertos pensadores contemporáneos dicen sobre uno y otro. Aquí intento dar cuenta de ambos tipos de relaciones. Asimismo, me propongo introducir y comentar algunos pasajes de Marx que compiten en radicalidad y audacia con los que escribiera Simondon un siglo más tarde, y en los cuales quiero apoyar mi hipótesis de lectura, a saber, que Marx es un pensador de lo transindividual avant la lettre.

  2. Homing pigeons ( Columba livia f. domestica) can use magnetic cues for locating food

    Science.gov (United States)

    Thalau, Peter; Holtkamp-Rötzler, Elke; Fleissner, Gerta; Wiltschko, Wolfgang

    2007-10-01

    An experimental group of homing pigeons ( Columba livia f. domestica) learned to associate food with a magnetic anomaly produced by bar magnets that were fixed to the bowl in which they received their daily food ration in their home loft; the control group lacked this experience. Both groups were trained to search for two hidden food depots in a rectangular sand-filled arena without obvious visual cues; for the experimental birds, these depots were also marked with three 1.15 × 106 μT bar magnets. During the tests, there were two food depots, one marked with the magnets, the other unmarked; their position within the arena was changed from test to test. The experimental birds searched within 10 cm of the magnetically marked depot in 49% of the test sessions, whereas the control birds searched there in only 11% of the sessions. Both groups searched near the control depot in 11 and 13% of the sessions, respectively. The significant preference of the magnetically marked food depot by the experimental birds shows that homing pigeons cannot only detect a magnetic anomaly but can also use it as a cue for locating hidden food in an open arena.

  3. Lo social y lo virtual (Francisco Tirado Serrano y Miquel Domènech i Argemí, Eds.

    Directory of Open Access Journals (Sweden)

    Tomás Sánchez-Criado

    2008-01-01

    Full Text Available Lo social y lo virtual” se trata principalmente de un libro conceptual que trabaja a través de ejemplos empíricos (por ejemplo, la teleasistencia y la transformación del espacio del cuidado social, las pulseras electrónicas y los cambios en las tecnologías de vigilancia.

  4. Variaciones sobre lo raro

    Directory of Open Access Journals (Sweden)

    Carina Blixen

    2010-07-01

    Full Text Available “Ser raro es normal” dice una pintada en un muro de la calle Chaná, ubicado entre Pablo de María y Joaquín de Salterain, en el barrio Cordón, en Montevideo. A dos cuadras de allí vivo ; he pasado delante de ese muro una y otra vez mientras rumiaba la necesidad de sentarme a escribir este trabajo. Cuando me decidí a hacerlo me di cuenta de que ahí estaba la clave : el muro me decía lo que yo no podía ver todavía. La noción de lo raro se ha perdido en la disolución de fronteras.Ese alguien a ...

  5. Plasma uric acid, creatinine, and urea nitrogen concentrations after whole blood administration via the gastrointestinal tract in domestic pigeons (Columba livia).

    Science.gov (United States)

    Sheldon, Julie; Hoover, John P; Payton, Mark E

    2007-06-01

    To determine if blood administered to pigeons by gavage tube would simulate gastrointestinal hemorrhage in a noncarnivorous avian model, be digested in the gastrointestinal tract, and subsequently alter concentrations of plasma urea nitrogen, creatinine, or uric acid, blood from common peacocks (Pavo cristatus) was administered by gavage tube to 5 healthy domestic pigeons (Columba livia) at doses of 0.5, 1.0, 2.0, 4.0, and 8.0 ml/kg. No significant difference in plasma concentrations of urea nitrogen, creatinine, or uric acid was seen 4-6 hours after gavage. The findings did not support or rule out the presence of gastrointestinal blood in pigeons as a model for hemorrhage in noncarnivorous avian species.

  6. Microbacterium faecale sp. nov., isolated from the faeces of Columba livia.

    Science.gov (United States)

    Chen, Xiu; Li, Gui-Ding; Li, Qin-Yuan; Xu, Fang-Ji; Jiang, Cheng-Lin; Han, Li; Huang, Xue-Shi; Jiang, Yi

    2016-11-01

    A novel, yellow, aerobic strain, YIM 101168T, isolated from the faeces of a dove (Columba livia), was studied to determine its taxonomic position. Cells were Gram-stain-positive, short rod-shaped, oxidase-negative, catalase-positive and non-motile. The strain could grow at 7-37 °C, at pH 6-10 and in the presence of 0-13 % (w/v) NaCl. The strain had a 16S rRNA gene sequence similarity and DNA-DNA hybridization relatedness value with Microbacteriumgubbeenense NCIMB 30129T of 97.8 % and 41.5±8.7 %, respectively. Ornithine was detected as the diagnostic amino acid in the hydrolysate of the cell wall. Whole-cell sugars were found to be galactose, glucose, rhamnose, mannose and ribose. Major fatty acids (>10 %) were iso-C16 : 0, anteiso-C15 : 0 and anteiso-C17 : 0. Major menaquinones were identified as MK-10, MK-11 and MK-12. The polar lipids included diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol, glycolipids and four unidentified lipids. The phylogenetic analyses as well as the chemotaxonomic and phenotypic characteristics indicate that strain YIM 101168T represents a novel species of the genus Microbacterium; the name Microbacterium faecale sp. nov. is proposed for the novel species and the type strain is YIM 101168T (=DSM 27232T=KCTC 39554T=CGMCC 1.15152T).

  7. IoT devices and applications based on LoRa/LoRaWAN

    CSIR Research Space (South Africa)

    Khutsoane, Oratile C

    2017-10-01

    Full Text Available such as smart water management systems. However, they require high energy-efficient sensor nodes that are able to communicate across long distance. This motivates the development of many Low-Power Wide Area Networks (LPWAN) technologies, such as LoRa, to fulfill...

  8. Lead Effect on Aminolevulinic Acid Dehydratase Activity of Feral Pigeon (Columba livia in Drenas

    Directory of Open Access Journals (Sweden)

    Albana Plakiqi Milaimi

    2015-09-01

    Full Text Available This study was aimed to investigate the effects of environmental pollution with heavy metals from ferro-nickel smelter on Aminolevulinic Acid Dehydratase (ALAD activity, and to analyze the blood lead level of feral pigeon (Columba livia in ferro-nickel smelter courtyard in Drenas City, Republic of Kosovo. For this purpose, twenty specimens of feral pigeon (20 birds, males and females, were collected in Drenas city which were living in ferro-nickel smelter courtyard, and 20 specimens in Lubizhdë village as control group (non-contaminated area. ALAD activity in Drenas group was significantly inhibited (P<0.001, compared with ALAD activity of controls. The blood lead level was significantly increased (P=0.015 compared to control group. Correlation between ALAD and blood lead level in Drenas group was negative (r=-0.117; P>0.050 and positive in Lubizhdë group (r=0.452; P> 0.050, but not in significant difference between the input groups. Feral pigeons can play an important role as bioindicators, which can used to monitor the environmental pollution with heavy metals that may originate from Nickel metallurgy.

  9. Redução fechada e fixação esquelética externa tipo I para tratamento de fraturas de tibiotarso em pombos domésticos (Columba livia

    Directory of Open Access Journals (Sweden)

    Alievi M.M.

    2002-01-01

    Full Text Available Estudaram-se a redução fechada e a fixação esquelética externa tipo I para o tratamento de fraturas de tibiotarso em 10 pombos domésticos (Columba livia adultos. As aves foram anestesiadas com a associação de xilazina e cetamina e em seguida foi realizada fratura do tibiotarso direito por pressão digital sobre a diáfise do membro. Quatro pinos de Kirschner, dois proximais e dois distais à linha da fratura, foram inseridos percutaneamente através de ambas as corticais ósseas e, após redução fechada da fratura, conectados externamente por uma barra de acrílico autopolimerizável na face lateral do membro. Em três aves foi observado radiograficamente desvio ósseo angular, porém, a função do membro não foi afetada. O tempo médio e o desvio-padrão para a cicatrização óssea foram 23,4± 3,0 dias. Os resultados demonstram que a redução fechada e a aplicação de fixador esquelético externo tipo I é um método efetivo para o tratamento de fraturas de tibiotarso em pombos domésticos (Columba livia.

  10. Stress-induced core temperature changes in pigeons (Columba livia).

    Science.gov (United States)

    Bittencourt, Myla de Aguiar; Melleu, Fernando Falkenburger; Marino-Neto, José

    2015-02-01

    Changes in body temperature are significant physiological consequences of stressful stimuli in mammals and birds. Pigeons (Columba livia) prosper in (potentially) stressful urban environments and are common subjects in neurobehavioral studies; however, the thermal responses to stress stimuli by pigeons are poorly known. Here, we describe acute changes in the telemetrically recorded celomatic (core) temperature (Tc) in pigeons given a variety of potentially stressful stimuli, including transfer to a novel cage (ExC) leading to visual isolation from conspecifics, the presence of the experimenter (ExpR), gentle handling (H), sham intracelomatic injections (SI), and the induction of the tonic immobility (TI) response. Transfer to the ExC cage provoked short-lived hyperthermia (10-20 min) followed by a long-lasting and substantial decrease in Tc, which returned to baseline levels 2 h after the start of the test. After a 2-hour stay in the ExC, the other potentially stressful stimuli evoked only weak, marginally significant hyperthermic (ExpR, IT) or hypothermic (SI) responses. Stimuli delivered 26 h after transfer to the ExC induced definite and intense increases in Tc (ExpR, H) or hypothermic responses (SI). These Tc changes appear to be unrelated to modifications in general activity (as measured via telemetrically recorded actimetric data). Repeated testing failed to affect the hypothermic responses to the transference to the ExC, even after nine trials and at 1- or 8-day intervals, suggesting that the social (visual) isolation from conspecifics may be a strong and poorly controllable stimulus in this species. The present data indicated that stress-induced changes in Tc may be a consistent and reliable physiological parameter of stress but that they may also show stressor type-, direction- and species-specific attributes. Copyright © 2014 Elsevier Inc. All rights reserved.

  11. Mitigating Inter-Network Interference in LoRa Networks

    OpenAIRE

    Voigt, Thiemo; Bor, Martin; Roedig, Utz; Alonso, Juan

    2017-01-01

    Long Range (LoRa) is a popular technology used to construct Low-Power Wide-Area Network (LPWAN) networks. Given the popularity of LoRa it is likely that multiple independent LoRa networks are deployed in close proximity. In this situation, neighbouring networks interfere and methods have to be found to combat this interference. In this paper we investigate the use of directional antennae and the use of multiple base stations as methods of dealing with inter-network interference. Directional a...

  12. de lo jurídico

    Directory of Open Access Journals (Sweden)

    José Julián Suárez Rodríguez

    2007-01-01

    Full Text Available El pensamiento jurídico moderno ha intentado abordar el estudio de lo jurídico con una mirada exclusivamente teórica, es decir, ha intentado hacer una descripción del fenómeno jurídico y elaborar un sistema lo más adecuado posible para explicar dicho fenómeno, a la manera como las ciencias naturales escogen un sector de la realidad para describirla, elaborando un modelo que la explique de la mejor manera posible. Esta forma de abordar lo jurídico tiene como origen la influencia de la moderna filosofía racionalista, el auge que las ciencias físicas toman a partir de los Principia mathemáthica de Newton, y el querer asimilar toda ciencia a las ciencias de la naturaleza que daban, según los modernos, mejores y más efectivos resultados. la consecuencia de este fenómeno fue la negación de lo complejo de la realidad; la distinción entre razón teórica y razón práctica pierde todo su sentido, y el derecho pierde su carácter de ciencia práctica y prudencial. Por ello se hace necesario recuperar el nivel prudencia de la ciencia jurídica para que responda de manera más adecuada a la naturaleza de su objeto: si la realidad jurídica es una realidad práctica, que busca la resolución de casos concretos, debe buscarse un método que se adecue a esta naturaleza del objeto, y no seguir queriendo adaptar el método de las ciencias teóricas al objeto jurídico.

  13. First description of Cryptosporidium parvum in carrier pigeons (Columba livia).

    Science.gov (United States)

    Oliveira, Bruno César Miranda; Ferrari, Elis Domingos; da Cruz Panegossi, Mariele Fernanda; Nakamura, Alex Akira; Corbucci, Flávio Sader; Nagata, Walter Bertequini; Dos Santos, Bianca Martins; Gomes, Jancarlo Ferreira; Meireles, Marcelo Vasconcelos; Widmer, Giovanni; Bresciani, Katia Denise Saraiva

    2017-08-30

    The carrier pigeon and the domestic pigeon are different breeds of the species Columba livia. Carrier pigeons are used for recreational activities such as bird contests and exhibitions. Due to the close contact with humans, these birds may potentially represent a public health risk, since they can host and disseminate zoonotic parasites, such as those belonging to the genus Cryptosporidium (phylum Apicomplexa). The purpose of this work was the detection by microscopic and molecular techniques of Cryptosporidium spp. oocysts in fecal samples of carrier pigeons, and subsequently to sequence the 18S ribosomal RNA marker of positive samples to identify the species. A total of 100 fecal samples were collected individually in two pigeon breeding facilities from Formiga and Araçatuba, cities located in Minas Gerais state and São Paulo state, Brazil, respectively. The age of the birds ranged from one to 12 years; 56 were females and 44 males. Fecal smears were stained with negative malachite green, whereas the molecular characterization was based on the sequence of a ∼800bp fragment of the 18S rRNA gene. Microscopic examination of fecal smears revealed 4% (4/100) oocyst positivity. On the other hand, 7% (7/100) of positivity were found using nested PCR. Three samples were 99% to 100% similar to Cryptosporidium parvum 18S rDNA type A (Genbank AH006572) and the other three samples had 99% to 100% similarity to C. parvum 18S rDNA type B (Genbank AF308600). To our knowledge, this is the first report of C. parvum oocysts in carrier pigeons. Copyright © 2017 Elsevier B.V. All rights reserved.

  14. SOBRE LO OBJETIVO, LO SUBJETIVO Y LO CAPRICHOSO EN ARQUITECTURA / On the objective, the subjective and the capricious in Architecture

    Directory of Open Access Journals (Sweden)

    Francisco Javier Montero Fernández

    2010-11-01

    Full Text Available RESUMEN: Un número nuevo de una revista debe pensar una editorial, al igual que un proyecto necesita nacer de un argumento y un primer croquis para, inicialmente, ofrecer una imagen finalista. Después guardaremos la editorial en un cajón y desarrollaremos el número de la revista. Dentro de unos meses, sacaremos ese croquis y podremos reconocer su eficacia; sufrirá algún retoque pero esperamos que aún sea válido.Un viaje comienza con un empeño, un destino o una finalidad. Esta revista se ofrece en cada número con un carácter poliédrico acotando faceta a faceta, la definición de Arquitectura. Siempre que hablamos de ella intentamos conocerla, delimitarla y hay quien piensa que en su anatomía puede encerrarse el secreto de algo que es inaprensible. Paso a paso nos acercamos a su conocimiento lentamente, gracias a un esfuerzo parecido al del trabajo de Sísifo. Lo más acertado sería pensar que nuestro acercamiento es parecido al recorrido de una cinta de Moebius y aunque consigamos agotar el recorrido, siempre seremos conscientes de la breve e inasible distancia existente en el mismo punto de cada lado de la cinta. Este viaje que muchos quieren entender como absurdo, es el viaje de lo subjetivo, de aquello que nos permite acercarnos a las ideas para conocerlas poco a poco, lentamente, frente al eficaz conocimiento lógico, analítico, anatómico que, como el niño que desmonta los objetos, algunos investigadores intentan aplicar, desmontando los edificios, pensando que dentro están las ideas. No obstante todos se ven obligados a reconocer que ese trabajo sí que es absurdo porque nos lleva a la nada, quizás solo a la destrucción del pensamiento a favor del conocimiento ineficaz de la realidad.El otro conocimiento que proponemos consiste en una actitud alternativa, aquella que reivindica lo subjetivo frente a lo objetivo, para establecer como mecanismo de conocimiento una acotación del mundo que nos rodea, de los temas que nos

  15. Estudio de la arquitectura y el nivel de desarrollo de la red LoRaWAN y de los dispositivos LoRa.

    OpenAIRE

    Ordóñez Monfort, Ignacio

    2017-01-01

    Es realitza un estudi sobre les diverses definicions del IoT que es concreta en una sèrie de requisits essencials del IoT i les característiques de les xarxes de connexió sobre les que sustentar-lo. Es realitza posteriorment un estudi en profunditat de les característiques de LoRA/LoRaWAN, que poden limitar o afavorir el seu ús com xarxa d'implementació del IoT, valorant de manera individualitzada cadascuna d'elles. Finalment, es realitza una analisi sobre el nivell de desenvolupament, madur...

  16. LO INEFABLE: LENGUAJE Y REVELACIÓN

    Directory of Open Access Journals (Sweden)

    Emmanuel Taub

    2012-07-01

    Full Text Available Partiendo de la voz de Paul Valéry, Walter Benjamin y Gershom Scholem, estetrabajo intenta retomar la problemática de la redención y el lenguaje en la filosofía judíamoderna. Desde esta perspectiva se intenta pensar el problema de la redención como unproblema teológico-político que desde el lugar del lenguaje permite pensar lo divino frente alhombre, así como también aquello que hace al lugar de lo inefable: espacio de eternidad entreDios y el hombre.

  17. Volcanic Activity on lo at the Time of the Ulysses Encounter.

    Science.gov (United States)

    Spencer, J R; Howell, R R; Clark, B E; Klassen, D R; O'connor, D

    1992-09-11

    The population of heavy ions in lo's torus is ultimately derived from lo volcanism. Groundbased infrared observations of lo between October 1991 and March 1992, contemporaneous with the 8 February 1992 Ulysses observations of the lo torus, show that volcanic thermal emission was at the low end of the normal range at all lo longitudes during this period. In particular, the dominant hot spot Loki was quiescent. Resolved images show that there were at least four hot spots on lo's Jupiter-facing hemisphere, including Loki and a long-lived spot on the leading hemisphere (Kanehekili), of comparable 3.5-micrometer brightness but higher temperature.

  18. Lo Sport e le sue storie: l'esperienza aquilana, quando lo sport supera l'emergenza

    Directory of Open Access Journals (Sweden)

    Marco Pasini

    2013-04-01

    Full Text Available Tale progetto di ricerca, della durata di 12 mesi (da luglio 2010 a luglio 2011 e commissionato dal Ministero del Lavoro e delle Politiche Sociali , intende ricostruire il tessuto sociale di 400 giovani delle scuole secondarie di I e II livello de L’Aquila e provincia attraverso lo sport. Tessuto sociale leso e sfaldato in seguito all’evento sismico che il 6 aprile 2009 colpì il capoluogo abruzzese, in cui oltre all’improvvisa e immediata perdita di tutti i beni materiali sono venuti meno anche i canali di socializzazione primari e secondari. Una quotidianità da ricostruire anche e soprattutto attraverso il concetto di attività sportiva volta, in questo caso più che mai, alla realizzazione di cittadinanza, partecipazione, formazione umana, integrazione e coesione sociale. Con particolare attenzione agli sport di squadra che permettono uno sviluppo affettivo, cognitivo, relazionale e una maggiore comprensione/costruzione della propria personalità. Dunque lo sport come strumento principe per l’inclusione sociale, in quanto gioco che esalta l’armonia e le dinamiche di cooperazione. Lo sport, in generale, va considerato un fatto sociale; è un fenomeno sociale, un sistema culturale - che agisce tra comunicazione, economia e politica - e si presenta come una costruzione sociale. Costruzione generata da significati e rappresentazioni collettive.

  19. Endoscopic Vasectomy of Male Feral Pigeons (Columba livia) as a Possible Method of Population Control.

    Science.gov (United States)

    Heiderich, Elisabeth; Schildger, Bernd; Lierz, Michael

    2015-03-01

    To evaluate whether single-entry endoscopic vasectomy of male feral pigeons (Columba livia) significantly reduced fertility and would potentially be valuable for control of feral pigeon populations, 252 male feral pigeons were caught in the city of Berne and endoscopically vasectomized. In this procedure, approximately 1 cm of the deferent duct was removed bilaterally. Rapid, uneventful recoveries occurred in 94% (237/252) of the pigeons, whereas 6% (15/252) died because of complications associated with the procedure, consisting of perforation of the ureter (9/15), major hemorrhage (5/15), and respiratory arrest (1/15). Mean anesthesia time was 23±6 minutes. The vasectomized males were habituated to 2 pigeon houses together with fertile females. Another pigeon house with fertile pairs acted as control. All eggs laid were candled weekly to assess fertility. In the 2 pigeon houses with vasectomized males, the mean fertilization rate was 0.9% (5/563), while in the control pigeon house, the rate was 100% (39/39). The results indicate that endoscopic vasectomy of male feral pigeons may be a promising tool for field control of feral pigeon populations, especially in combination with other methods such as pigeon houses.

  20. Molecular survey on zoonotic tick-borne bacteria and chlamydiae in feral pigeons (Columba livia domestica).

    Science.gov (United States)

    Ebani, Valentina Virginia; Bertelloni, Fabrizio; Mani, Paolo

    2016-04-01

    To determine the presence of zoonotic tick-borne bacteria in feral pigeons (Columba livia domestica) from urban areas. Spleen samples from 84 feral pigeons, found dead with traumatic injuries in urban areas, were examined by PCR to detect DNA of Anaplasma phagocytophilum, Bartonella spp., Borrelia burgdorferi sensu lato, Coxiella burnetii, Rickettsia spp., and Chlamydophila spp. Twenty (23.8%) pigeons were infected by tick-borne agents, in particular 2 (2.38%) animals resulted positive for Bartonella spp., 5 (5.95%) for C. burnetii, 5 (5.95%) for Rickettsia spp., 13 (15.47%) for B. burgdorferi sensu lato. All birds scored negative for A. phagocytophilum. Moreover, 17 (20.23%) pigeons were positive for Chlamydophila spp. and among them 10 (11.9%) for Chlamydophila psittaci. Mixed infections by two or three agents were detected in 8 (9.52%) animals. Feral pigeons living in urban and periurban areas are a hazard for the human health as source of several pathogens. The obtained results confirm pigeons as reservoirs of chlamydial agents and suggest that they may be involved in the epidemiology of zoonotic tick-borne infections too. Copyright © 2016 Hainan Medical College. Production and hosting by Elsevier B.V. All rights reserved.

  1. La metáfora de la luz como expresión del alma en “Livia y los sueños” de Jesús Gardea

    Directory of Open Access Journals (Sweden)

    María del Rosario Lara

    2014-01-01

    Full Text Available En el presente artículo exploramos la expresión artística de la idea de alma a través de la metáfora de la luz tal y como aparece en “Livia y los sueños” . Para ello, nos basare - mos en los postulados filosóficos de María Zambrano referentes a las concepciones de alma, ser humano y destino. En nuestra investigación también abordaremos la forma como tiempo y espacio en la obra de Gardea integran un cronotopo específico, como base donde la idea de alma puede desplegarse en toda su plenitud.

  2. Flotabilidad y similitud del nado de Manta birostris(Elasmobranchii: Myliobatidae con el ciclo de vuelo de Columba livia(Aves: Columbidae

    Directory of Open Access Journals (Sweden)

    Iván Meza Vélez

    2013-12-01

    Full Text Available Se analizó la física de la flotación en la mantarraya Manta birostrisy se comparó el nado con el ciclo de vuelo de la paloma doméstica Columba livia, con la finalidad de encontrar similitudes y diferencias en las locomociones y las leyes físicas que intervienen. Se demostró que uno de los dos ciclos de nado estudiados de esta especie posee tres de las cuatro fases principales del ciclo de vuelo de la paloma doméstica. También se demostró un “efecto paracaídas” en M. birostris, el cual le ofrece una ventaja en su locomoción. Adicionalmente, se describió cómo el concepto físico de torque se aplica al giro de esta especie.

  3. El romanticismo como mito fundacional de lo joven

    Directory of Open Access Journals (Sweden)

    Jairo Hernando Gómez Esteban

    2009-01-01

    Full Text Available El propósito principal de este ensayo es el de contribuir a la configuración y delimitación del corpus conceptual sobre juventud desde una perspectiva histórica, asumiendo el romanticismo como mito fundacional de lo joven, es decir, como el movimiento estético-político que ha logrado incrustarse y prevalecer no sólo en los imaginarios y rituales sino en las prácticas políticas y culturales de los jóvenes y las jóvenes de los dos últimos siglos. La hipótesis que me propongo demostrar es que las fuentes de las diversas formas de expresión ético-estéticas y políticas de la subjetividad contemporánea encarnadas en lo joven, no sólo se encuentran en el romanticismo, sino que siguen manifestándose con toda su fuerza y plenitud.

  4. Lo profano en lo sagrado: Identidad religiosa y literaria en el Rāmāyaṇa

    OpenAIRE

    Figueroa Castro, Óscar

    2014-01-01

    Suele concebirse lo sagrado y lo profano como ámbitos distintos, incluso antagónicos. En la antigua cultura sánscrita muchos casos sugieren una interacción más complejo entre realidades sagradas y profanas. Aquí se explora el Rāmāyaṇa, una de las dos grandes épicas hinduistas. En especial, el artículo revisa la construcción, dentro del Rāmāyaṇa, de una identidad religioso-literaria frente al pasado védico y los valores de la ortodoxia brahmánica. Con este fin se analiza la tematización que el...

  5. IP communication optimization for 6LoWPAN-Based Wireless Sensor Networks

    Directory of Open Access Journals (Sweden)

    Li MA

    2014-07-01

    Full Text Available The emergence of 6LoWPAN makes it possible that Wireless Sensor Networks access to the Internet. However, the cost of IP communication between 6LoWPAN wireless sensor node and external internet node is still relatively high. This paper proposed a new addressing configuration and compression scheme in 6LoWPAN network called IPHC-NAT, which largely reduced the proportion of the IP header in 6LoWPAN packet, designed and constructed a bidirectional data transmission gateway to connect 6LoWPAN wireless sensor node with IPv6 client. The experimental results show the feasibility of the design of IPHC-NAT and the data transmission efficiency has significantly been improved compared to the original 6LoWPAN network.

  6. Ad infinitum: implicaciones de lo sublime en la contemporaneidad

    Directory of Open Access Journals (Sweden)

    Miguel Ángel Gaete Cáceres

    2014-12-01

    Full Text Available El presente texto es un estudio que ofrece una revisión crítica al concepto de lo sublime basándose en la teorización clásica de esta idea, es decir, la adjudicada a Longino, Edmund Burke e Immanuel Kant. A partir de aquí, se intentará descubrir la presencia de lo sublime como un factor relevante en la configuración cultural del mundo contemporáneo, pasando por su presencia innegable en el arte de las vanguardias o en la concepción de la Naturaleza y el entorno. Finalmente, el objetivo central de este escrito es demostrar como lo sublime ofrece también una alternativa para comprender el problema de "lo infinito" y "lo ilimitado" en el marco de las tecnologías, la eclosión de las grandes ciudades y su filtración en el sustrato retórico del capitalismo, ofreciendo así una vía diferente en el estudio de este tema clásico de la estética.

  7. Un viaje desde lo imaginario a lo real. Una aproximación al perfil del turista literario en España

    Directory of Open Access Journals (Sweden)

    Rubén J. Pérez Redondo

    2017-05-01

    Full Text Available Los viajes han sido frecuentemente objeto de inspiración para escritores y cronistas que han ido dejando la huella de su experiencia viajera en el desarrollo de sus textos. En ellos se suele alternar lo real con lo imaginario y es esa una de las principales fortalezas que puede tener un trabajo literario para alcanzar el éxito. La constante intromisión de lo real en lo ficticio y viceversa permite la construcción de incesantes imaginarios sociales en determinados lugares y momentos. Las creaciones literarias transportan al lector a una realidad que sólo existe o se configura en su cabeza. Con el auge y desarrollo del turismo literario, que es una rama del turismo cultural, se va a permitir, de múltiples maneras, que el lector complemente en el mundo real lo que experimentó en sus lecturas, por ejemplo visitando los lugares donde discurre la trama de una novela. En este artículo se va a analizar, por un lado, el turismo literario como factor de creación de nuevos imaginarios sociales y, por otra parte, se va a construir un perfil del turista literario en España que nos permita identificar cuáles son sus características comunes. Para conseguir este fin hemos revisado bibliografía específica sobre el tema tratado, se ha recurrido a organismos culturales que nos han aportado datos sobre el visitante y su experiencia viajera y hemos incorporado una encuesta como técnica para obtener información.      

  8. LoRa Performance under Variable Interference and Heavy-Multipath Conditions

    Directory of Open Access Journals (Sweden)

    Kamil Staniec

    2018-01-01

    Full Text Available LoRa (or LoRaWAN is by far the best known representative of narrowband communication systems designed for the Internet of Things. As a system dedicated specifically for long-range operations, it possesses a considerable processing gain for the energetic link budget improvement and a remarkable immunity to multipath and interference. The paper describes outcomes of measurement campaigns during which the LoRa performance was tested against these two factors, that is, a heavy-multipath propagation and a controlled, variable interference generated, respectively, in a reverberation chamber and an anechoic chamber. Results allow quantitative appraisal of the system behavior under these harsh conditions with respect to LoRa’s three major configurable parameters: the spreading factor, bandwidth, and code rate. They also allow dividing LoRa configurational space into three distinct sensitivity regions: in the white region it is immune to both interference and multipath propagation, in the light-grey region it is only immune to the multipath phenomenon but sensitive to interference, and in the dark grey region LoRa is vulnerable to both phenomena.

  9. When One Hemisphere Takes Control: Metacontrol in Pigeons (Columba livia)

    Science.gov (United States)

    Adam, Ruth; Güntürkün, Onur

    2009-01-01

    Background Vertebrate brains are composed of two hemispheres that receive input, compute, and interact to form a unified response. How the partially different processes of both hemispheres are integrated to create a single output is largely unknown. In some cases one hemisphere takes charge of the response selection – a process known as metacontrol. Thus far, this phenomenon has only been shown in a handful of studies with primates, mostly conducted in humans. Metacontrol, however, is even more relevant for animals like birds with laterally placed eyes and complete chiasmatic decussation since visual input to the hemispheres is largely different. Methodology/Principal Findings Homing pigeons (Columba livia) were trained with a color discrimination task. Each hemisphere was trained with a different color pair and therefore had a different experience. Subsequently, the pigeons were binocularly examined with two additional stimuli that combined the positive color of one hemisphere with a negative color that had been shown to the other, omitting the availability of a coherent solution and confronting the pigeons with a conflicting situation. Some of the pigeons responded to both stimuli, indicating that none of the hemispheres dominated the overall preference. Some birds, however, responded primarily to one of the conflicting stimuli, showing that they based their choice on the left- or right-monocularly learned color pair, indicating hemispheric metacontrol. Conclusions/Significance We could demonstrate for the first time that metacontrol is a widespread phenomenon that also exists in birds, and thus in principle requires no corpus callosum. Our results are closely similar to those in humans: monocular performance was higher than binocular one and animals displayed different modes of hemispheric dominance. Thus, metacontrol is a dynamic and widely distributed process that possibly constitutes a requirement for all animals with a bipartite brain to confront the

  10. When one hemisphere takes control: metacontrol in pigeons (Columba livia.

    Directory of Open Access Journals (Sweden)

    Ruth Adam

    Full Text Available Vertebrate brains are composed of two hemispheres that receive input, compute, and interact to form a unified response. How the partially different processes of both hemispheres are integrated to create a single output is largely unknown. In some cases one hemisphere takes charge of the response selection--a process known as metacontrol. Thus far, this phenomenon has only been shown in a handful of studies with primates, mostly conducted in humans. Metacontrol, however, is even more relevant for animals like birds with laterally placed eyes and complete chiasmatic decussation since visual input to the hemispheres is largely different.Homing pigeons (Columba livia were trained with a color discrimination task. Each hemisphere was trained with a different color pair and therefore had a different experience. Subsequently, the pigeons were binocularly examined with two additional stimuli that combined the positive color of one hemisphere with a negative color that had been shown to the other, omitting the availability of a coherent solution and confronting the pigeons with a conflicting situation. Some of the pigeons responded to both stimuli, indicating that none of the hemispheres dominated the overall preference. Some birds, however, responded primarily to one of the conflicting stimuli, showing that they based their choice on the left- or right-monocularly learned color pair, indicating hemispheric metacontrol.We could demonstrate for the first time that metacontrol is a widespread phenomenon that also exists in birds, and thus in principle requires no corpus callosum. Our results are closely similar to those in humans: monocular performance was higher than binocular one and animals displayed different modes of hemispheric dominance. Thus, metacontrol is a dynamic and widely distributed process that possibly constitutes a requirement for all animals with a bipartite brain to confront the problem of choosing between two hemisphere

  11. PRECISION POINTING OF IBEX-Lo OBSERVATIONS

    International Nuclear Information System (INIS)

    Hłond, M.; Bzowski, M.; Möbius, E.; Kucharek, H.; Heirtzler, D.; Schwadron, N. A.; Neill, M. E. O'; Clark, G.; Crew, G. B.; Fuselier, S.; McComas, D. J.

    2012-01-01

    Post-launch boresight of the IBEX-Lo instrument on board the Interstellar Boundary Explorer (IBEX) is determined based on IBEX-Lo Star Sensor observations. Accurate information on the boresight of the neutral gas camera is essential for precise determination of interstellar gas flow parameters. Utilizing spin-phase information from the spacecraft attitude control system (ACS), positions of stars observed by the Star Sensor during two years of IBEX measurements were analyzed and compared with positions obtained from a star catalog. No statistically significant differences were observed beyond those expected from the pre-launch uncertainty in the Star Sensor mounting. Based on the star observations and their positions in the spacecraft reference system, pointing of the IBEX satellite spin axis was determined and compared with the pointing obtained from the ACS. Again, no statistically significant deviations were observed. We conclude that no systematic correction for boresight geometry is needed in the analysis of IBEX-Lo observations to determine neutral interstellar gas flow properties. A stack-up of uncertainties in attitude knowledge shows that the instantaneous IBEX-Lo pointing is determined to within ∼0. 0 1 in both spin angle and elevation using either the Star Sensor or the ACS. Further, the Star Sensor can be used to independently determine the spacecraft spin axis. Thus, Star Sensor data can be used reliably to correct the spin phase when the Star Tracker (used by the ACS) is disabled by bright objects in its field of view. The Star Sensor can also determine the spin axis during most orbits and thus provides redundancy for the Star Tracker.

  12. Lo sagrado en las sociedades secularizadas

    Directory of Open Access Journals (Sweden)

    González Noriega, Santiago

    1993-10-01

    Full Text Available Not available.

    La potencia tutelar burocrática asume la custodia de una masa amorfa. Frente a ella ha de afirmarse una sociedad civil a partir de núcleos de ciudadanos activos. El motor de esta ciudadanía es la formación de un núcleo básico de creencias -«lo sagrados-e- que desempeña un papel comparable, en cuanto a capacidad de movilización, al de las viejas religiones. Lo sagrado «laico» o «filosófico» apunta a aquello que el hombre puede considerar perdurable y conferir sentido a su existencia.

  13. GERENCIAR Y GESTIONAR LO CULTURAL TAREA INAPLAZABLE

    OpenAIRE

    Martha Isabel Tovar

    2013-01-01

    Este artículo aborda lo concerniente a la formación de Gerentes y Gestores Culturales como actores principales de la gestión cultural. Para ello examinará los entornos o escenarios donde lo cultural se manifiesta como reflejo de los contextos sociales en los cuales se trabaja la cultura. El artículo termina mostrando cómo los elementos de la gerencia social son una alternativa en la formación de gerentes y gestores sociales.

  14. GERENCIAR Y GESTIONAR LO CULTURAL TAREA INAPLAZABLE

    Directory of Open Access Journals (Sweden)

    Martha Isabel Tovar

    2013-07-01

    Full Text Available Este artículo aborda lo concerniente a la formación de Gerentes y Gestores Culturales como actores principales de la gestión cultural. Para ello examinará los entornos o escenarios donde lo cultural se manifiesta como reflejo de los contextos sociales en los cuales se trabaja la cultura. El artículo termina mostrando cómo los elementos de la gerencia social son una alternativa en la formación de gerentes y gestores sociales.

  15. De lo invisible y lo cotidiano. Familias y discapacidad

    Directory of Open Access Journals (Sweden)

    Araya Umaña, Sandra

    2007-12-01

    Full Text Available Resumen: La construcción social de la realidad comporta un pensamiento dicotómico que asocia la discapacidad con el par normal – anormal lo que favorece procesos de exclusión social de las personas con discapacidad y sus familias. A su vez, el concepto de familia se finca en un modelo construido social y culturalmente que privilegia la subordinación de otras formas de organización familiar pues este modelo es el que se considera normal.Tanto el concepto de familia como el de discapacidad contienen una carga ideológica cuya pretensión es la prescripción y con ella lo que se favorece es la proscripción. A partir de la teoría de las representaciones sociales, este artículo aborda las dinámicas que surgen de la vinculación de ambos conceptos con el fin de evidenciar los caminos recorridos y los que aun falta recorrer para el logro de una sociedad inclusiva.Abstract: The social construction of reality involves a dichotomizing thinking that associates the discapacity with the normal pair - abnormal which favors processes of social exclusion for people with discapacity, as well as their families.Also, the concept of family is based on a model constructed socially and culturally that favors the subordination of other forms of family organizations, as that model is the one considered normal.Family and discapacity concepts, holds an ideological burden whose pretension is the prescription, which will encourage the proscription.Based on the theory of socials representations, this article deals with the dynamics that emerge from the linkage of the two concepts in order to demonstrate the roads and paths that lack even go to the achievement of an inclusive society.

  16. Eestlased rajavad Veneetsiasse gaasitoru / Anneliis Aunapuu

    Index Scriptorium Estoniae

    Aunapuu, Anneliis

    2008-01-01

    Veneetsia arhitektuuribiennaalil Eestit esindav arhitektuuribüroo Salto töögrupp (Maarja Kask, Ralf Lõoke, Neeme Külm) rajab sinna gaasijuhtme NordStream sümboli. 63 meetri pikkune skulpturaalne vorm kulgeb näitusepaviljonide vahel, biennaaliala peamise käigutee kohal. Kommenteerivad Ingrid Ruudi, Maarja Kask, Ralf Lõoke

  17. Ambient noise tomography of Lo'ihi

    Science.gov (United States)

    McClement, K.; Thurber, C. H.; Teel, A.; Caplan-Auerbach, J.

    2012-12-01

    Lo'ihi seamount, the youngest volcano in the Hawaiian-Emperor chain, lies approximately 30 km south of Hawai'i Island with its summit still approximately 1 km below sea level. Lo'ihi offers a unique opportunity to study the early formation of a hotspot volcano and can provide insight into the deep internal structure of the other volcanoes that make up the Hawaiian Islands. This study uses Ambient Noise Tomography (ANT) to create a 3D tomographic image of Lo'ihi's S-wave velocity structure from ocean bottom seismometer (OBS) data. ANT has been used in many subaerial studies but has seen very few applications to OBS data. This study uses continuous data recorded in 2010 to 2011 from 12 short-period OBS instruments deployed on and around Lo'ihi. With the farthest distance between stations being just over 30 km, the stations provide a fairly dense coverage mainly for the northern half of the volcano. Following the approach of Masterlark et al. [2010], we computed vertical-vertical and vertical-radial cross-correlations using 97 days of continuous data from the 12 stations to produce the ambient noise Green's functions. From these, dispersion curves were produced over a frequency range from .04 Hz to 0.65 Hz . After a quality control analysis, checkerboard tests were used to determine a suitable cell size for the 2D group velocity inversions. The final step is the inversion of the group velocity dispersion curves to create a 3D Vs model. The 3D Vs image produced through this method does not provide clear evidence of a shallow magma chamber; however, when compared to a previous P-wave velocity (Vp) model [Caplan-Auerbach, 2001], a high Vp/Vs ratio is evident especially at depths from 1 km to 5 km, indicating the presence of highly fractured rock.

  18. La dinámica de lo femenino y lo masculino en la psicología analítica junguiana

    Directory of Open Access Journals (Sweden)

    Fabio Andrés Ramírez Gómez

    2014-01-01

    Full Text Available El presente artículo pretende mostrar, a la luz de la psicología de orientación junguiana, cómo se concibe lo femenino y lo masculino en el psiquismo humano, para lo cual se abordan los elementos conceptuales más significativos de dicha teoría, en donde se hace una minuciosa diferenciación entre los diferentes niveles psíquicos. A partir de allí se distinguen las características, el dinamismo y la influencia, tanto colectiva e individual que tiene la simbología femenino/masculino y la importancia que de allí se desprende para un abordaje terapéutico. Con la riqueza de los elementos que aporta esta perspectiva, este artículo pretende servir como un referente conceptual para sustentar, a mediano plazo, un modelo de intervención en el ámbito grupal, familiar y de pareja.

  19. Fate of egg proteins during the development of Columba livia domestica embryo.

    Science.gov (United States)

    Shbailat, Seba Jamal; Aslan, Ibtisam Omar

    2018-01-01

    The transfer of egg white into the yolk and consumption of yolk proteins by the embryo are largely unexplored in the pigeon Columba livia domestica. Here, we investigated the route of egg white transfer as well as the degradation and uptake of yolk proteins by the pigeon embryo. Initially, we tested the electrophoretic patterns of proteins in different egg compartments throughout development. Then, we used lysozyme as a reference protein to follow the egg white transfer, and we measured its activity using Micrococcus lysodeikticus as a substrate. Moreover, we determined the general protease activity during different developmental stages in the yolk using casein. Finally, we examined the expression of aminopeptidase-N (APN) and oligopeptide transporter PepT1 genes in the yolk sac membrane (YSM) from incubation day 8 until day 17. Several electrophoretic bands of presumptive egg white proteins appeared in different egg compartments. Also, lysozyme activity was detected chronologically in the egg compartments. It appeared on day 12 in the amniotic and intestinal fluids and on day 14 in the yolk. Moreover, protease activity in the yolk increased significantly on day 14 and thereafter. APN expression was largest on day 8 and reduced generally afterward, whereas PepT1 expression peaked between days 13 and 15 but then reduced substantially. Our results suggest that the egg white proteins move through the amnion and intestine into the yolk where they undergo degradation by the activated proteases. Furthermore, the YSM appears to have a role in protein consumption, and this role decreases toward hatch. © 2018 Wiley Periodicals, Inc.

  20. Using blockchain to build trusted LoRaWAN sharing server

    Directory of Open Access Journals (Sweden)

    Jun Lin

    2017-09-01

    Full Text Available Purpose – With the rapid growth of the Internet of Things (IoT market and requirement, low power wide area (LPWA technologies have become popular. In various LPWA technologies, Narrow Band IoT (NB-IoT and long range (LoRa are two main leading competitive technologies. Compared with NB-IoT networks, which are mainly built and managed by mobile network operators, LoRa wide area networks (LoRaWAN are mainly operated by private companies or organizations, which suggests two issues: trust of the private network operators and lack of network coverage. This study aims to propose a conceptual architecture design of a blockchain built-in solution for LoRaWAN network servers to solve these two issues for LoRaWAN IoT solution. Design/methodology/approach – The study proposed modeling, model analysis and architecture design. Findings – The proposed solution uses the blockchain technology to build an open, trusted, decentralized and tamper-proof system, which provides the indisputable mechanism to verify that the data of a transaction has existed at a specific time in the network. Originality/value – To the best of our knowledge, this is the first work that integrates blockchain technology and LoRaWAN IoT technology.

  1. Co-occurrence of Mycoplasma Species and Pigeon Herpesvirus-1 Infection in Racing Pigeons ( Columba livia).

    Science.gov (United States)

    Hellebuyck, Tom; Göbel, Stephan; Pasmans, Frank; Adriaensen, Connie; Martel, An

    2017-12-01

    Oropharyngeal swab samples were collected from 438 live racing pigeons ( Columba livia), with and without signs of respiratory disease, that were housed in 220 lofts in 3 provinces in the western part of the Netherlands. Polymerase chain reaction (PCR) was used to identify Mycoplasma species and pigeon herpesvirus-1 (PHV-1) from the samples. In 8.6% of the pigeon lofts tested, signs of respiratory disease were present in pigeons at sampling, and in 30.9% of the sampled pigeon lofts, respiratory signs were observed in pigeons during the 6-month period immediately before sampling. A total of 39.8% of tested pigeons (54.5% of tested lofts) were positive for Mycoplasma species, and 30.6% of tested pigeons (48.6% of tested lofts) were positive for PHV-1. In 15.8% of the tested pigeons (26.8% of tested pigeon lofts), coinfection by Mycoplasma species and PHV-1 was identified. The number of pigeon lofts having pigeons coinfected by Mycoplasma species and PHV-1 was higher than that where only one of the infections was identified. Neither the presence of Mycoplasma species, PHV-1, nor the co-occurrence of both infections was significantly associated with signs of respiratory disease.

  2. Evolution of Starspots on LO Pegasi

    Science.gov (United States)

    Harmon, Robert; Bloodgood, Felise; Martin, Alec; Pellegrin, Kyle

    2018-01-01

    LO Pegasi is a young solar analog, a K main-sequence star that rotates with a period of 10.1538 hr. The rapid rotation yields a strong stellar dynamo associated with large starspots on the surface, which are regions where the magnetic field inhibits the convective transport of energy from below, so that the spots are cooler and thus darker than the surrounding photosphere. The star thus exhibits rotational modulation of its light curve as the starspots are carried into and out of view of Earth. CCD images of LO Peg were acquired at Perkins Observatory in Delaware, OH through standard B, V, R, and I photometric filters from 2017 June 1 to July 20. After subtracting dark frames and flat fielding the images, differential aperture photometry was performed to yield light curves through each of the four filters. The resulting light curves that were then analyzed via the Light-curve Inversion program created by one of us (Harmon) to produce surface maps. Our observations indicated that LO Pegasi’s light curve changed in both amplitude and shape between 2017 June and July, while its maximum brightness did not change. We present maps corresponding to these two distinct light curves, along with maps for data acquired from 2006-2016.

  3. Fusión vs. cultura organizacional. Lo real y lo virtual

    Directory of Open Access Journals (Sweden)

    William Castillo

    2004-01-01

    Full Text Available Las organizaciones en las ultimas decadas han presenciado el cambio de concepcion sobre lo que se desean alcanzar dentro del mundo de los negocios, donde se promueven movimientos radicales, estos traen consigo oportunidades y riesgo por enfrentar. Una de las premisas basicas sobre este topico es el desenvolvimiento de las organizaciones en un mercado globalizado, enfrentadas en conflictos internos y externos, generando ademas una variacion en la estrcutura organizacional, cultura empresarial y en la toma de decisiones sobre las estrategias para adaptarse al cambio.

  4. Lo sport come filosofia educativa e sociale: una prospettiva decostruzionista

    Directory of Open Access Journals (Sweden)

    Emanuele Isidori

    2013-04-01

    Full Text Available Lo scopo del presente articolo è quello di procedere, utilizzando un approccio filosofico decostruzionista, ad una disamina dello sport come oggetto filosofico, mostrandone le contraddizioni interne, i paradossi e le aporie che lo caratterizzano in quanto concetto educativo-culturale e fenomeno sociale. L’analisi si svilupperà riflettendo su tre temi tipici del dibattito decostruzionista: quello del phármakon, dell’identità e dell’ospitalità, tema quest’ultimo tipico anche del pensiero debole che presenta forti interconnessioni con il pensiero decostruzionista e postmoderno. Lo studio, che utilizzerà il tipico approccio teoretico-prassico della filosofia dell’educazione, evidenzierà sia i meccanismi concettuali che talvolta impediscono allo sport di essere pensato come pratica realmente educativa ed in grado di generare l’inclusione sociale, sia quelli che invece ne permettono la teorizzazione e l’implementazione in questa prospettiva. Lo studio si concluderà mostrando come per concepire realmente lo sport nella prospettiva di un autentico strumento educativo e di miglioramento della vita sociale sia necessaria una vera e propria rivoluzione etica e culturale della nostra società. Lo sport, infatti, in quanto sottosistema della società, rappresenta lo specchio dei valori di quest’ultima e non solo ne incarna i difetti, le contraddizioni ma anche le sue buone prassi. Questa rivoluzione deve necessariamente passare attraverso l’educazione; soltanto così, infatti, sarà possibile costruire quella società nuova, fondata sulla paidéia sportiva, che De Coubertin sognava per l’umanità futura.

  5. Ocorrência de Chlamydophila psittaci em pombos (Columba livia na cidade de Salvador, Bahia

    Directory of Open Access Journals (Sweden)

    D.C. Leal

    2015-06-01

    Full Text Available A existência de populações numerosas de pombos (Columba livia em centros urbanos, em quase todo o mundo, tem se tornado um risco à saúde pública em vista das zoonoses que podem transmitir. A infecção por Chlamydophila psittaci foi avaliada em pombos que frequentam áreas públicas, como praças, ruas e pontos turísticos na cidade de Salvador, Bahia, por meio da PCR em amostras de fezes frescas, suabes cloacais e orofaríngeos. O estudo revelou uma frequência de infecção por C. psittaci de 11,7% (16/137 dos pombos, e oito dos 10 locais pesquisados apresentavam aves infectadas. A detecção de C. psittaci em amostras de cloaca e orofaringe foi maior (15,8% - 3/19 que em amostras de fezes frescas (11% - 13/118. Os resultados demonstram a ocorrência de infecção por C. psittaci em pombos que habitam as áreas públicas da cidade de Salvador e apontam para a necessária elaboração de medidas de controle e monitoramento das populações de pombos urbanos, bem como de ações voltadas à conscientização da sociedade sobre os riscos à saúde pública.

  6. Are birds smarter than mathematicians? Pigeons (Columba livia) perform optimally on a version of the Monty Hall Dilemma.

    Science.gov (United States)

    Herbranson, Walter T; Schroeder, Julia

    2010-02-01

    The "Monty Hall Dilemma" (MHD) is a well known probability puzzle in which a player tries to guess which of three doors conceals a desirable prize. After an initial choice is made, one of the remaining doors is opened, revealing no prize. The player is then given the option of staying with their initial guess or switching to the other unopened door. Most people opt to stay with their initial guess, despite the fact that switching doubles the probability of winning. A series of experiments investigated whether pigeons (Columba livia), like most humans, would fail to maximize their expected winnings in a version of the MHD. Birds completed multiple trials of a standard MHD, with the three response keys in an operant chamber serving as the three doors and access to mixed grain as the prize. Across experiments, the probability of gaining reinforcement for switching and staying was manipulated, and birds adjusted their probability of switching and staying to approximate the optimal strategy. Replication of the procedure with human participants showed that humans failed to adopt optimal strategies, even with extensive training.

  7. Morphological and molecular characterization of Eimeria labbeana-like (Apicomplexa:Eimeriidae) in a domestic pigeon (Columba livia domestica, Gmelin, 1789) in Australia.

    Science.gov (United States)

    Yang, Rongchang; Brice, Belinda; Elloit, Aileen; Ryan, Una

    2016-07-01

    An Eimeria species is described from a domestic pigeon (Columba livia domestica). Sporulated oocysts (n = 35) were subspherical, with a smooth bi-layered oocyst wall (1.0 μm thick). Oocysts measured 20.2 × 16.1 (22.0-18.9 × 15.7-18.9) μm, oocyst length/width (L/W) ratio, 1.38. Oocyst residuum and a polar granule were present. The micropyle was absent. Sporocysts are elongate-ovoid, 13.0 × 6.1 (14.5-12.5 × 5.5-7.0) μm, sporocyst L/W ratio, 2.13 (2.0-2.2), sporocyst residuum was present, composed of numerous granules in a spherical or ovoid mass. Each sporocyst contained 2 banana-shaped sporozoites, 12.3 × 3.5 (11.8-13.0 × 3.3-3.6) μm. A spherical-ellipsoid posterior refractile body was found in the sporozoites. A nucleus was located immediately anterior to the posterior refractile body. Molecular analysis was conducted at three loci; the 18S and 28S ribosomal RNA genes and the mitochondrial cytochrome oxidase gene (COI). At the 18S locus, the new isolate shared 98.0% genetic similarity with three Isospora isolates from Japan from the domestic pigeon (Columba livia domestica). At the 28S locus, it grouped separately and shared 92.4% and 92.5% genetic similarity with Isospora anthochaerae (KF766053) from a red wattlebird (Anthochaera carunculata) from Australia and an Isospora sp. (MS-2003 - AY283845) from a Himalayan grey-headed bullfinch (Pyrrhula erythaca) respectively. At COI locus, this new isolate was in a separate clade and shared 95.6% and 90.0% similarity respectively with Eimeria tiliquae n. sp. from a shingleback skink in Australia and an Eimeria sp. from a common pheasant (Phasianus colchicus) from America. Based on the morphological data, this isolate is most similar to Eimeria labbeana. As no molecular data for E. labbeana is available and previous morphological data is incomplete, we refer to the current isolate as E. labbeana-like. Crown Copyright © 2016. Published by Elsevier Inc. All rights reserved.

  8. Superposición de Subjetividades: La ciudad y lo virtual

    Directory of Open Access Journals (Sweden)

    Evelyn Alonso Rohner

    2017-04-01

    Full Text Available Las nuevas cartografías urbanas, que identifican –a veces en tiempo real– la localización de nuevas actividades y recorridos, y que parecen pertenecer en sus atractivas representaciones al más puro estado de lo gaseoso, manifiestan cambios de emplazamiento efectivos respecto a lo previsible. Esta mutabilidad continua de los flujos y las localizaciones, deriva en inevitables readaptaciones de la ciudad real. No solo por las nuevas “lecturas” que de la misma hacemos, y de los nuevos mapas que construimos, sino por la necesaria adaptación de sus estructuras, que pasarán a ser determinadas, no por lo fuerte –trazados e infraestructuras– sino precisamente por lo débil e invisible de la información virtual. No es algo nuevo; los libros de viaje y los planos también modificaron la construcción, primero mental y luego física, de la ciudad. Pero la nueva cartografía constituida por la superposición de subjetividades de millones de ciudadanos, muestran ya la transformación de la ciudad real, y lo hacen a velocidades inimaginables antes, transformando lo estático en dinámico, y forzando a su consideración activa en cualquier futura decisión que afecte al planeamiento y el proyecto urbano.

  9. Lo orgánico y lo funcional en psiquiatría

    Directory of Open Access Journals (Sweden)

    Roberto Anselmo Ramos Valverde

    2014-08-01

    Full Text Available El desarrollo acelerado de las neurociencias en las últimas dos décadas permitió rescatar al cerebro de las sombras cartesianas donde se encontraba condenado, demostrándose que todo fenómeno psíquico, normal o morboso, tiene como sustento material a este órgano gestor de las funciones psíquicas. De esta manera quedó esclarecido que los trastornos mentales desencadenados por acontecimientos psicosociales estresantes actúan sobre el cerebro, provocando cambios neuroquímicos a nivel molecular responsables de la sintomatología que los tipifica, conjugándose etiopatogénicamente los factores biológicos, psicológicos y sociales gestores de estos desórdenes mentales. (1 Se distinguen en psiquiatría dos tipos de perfiles clínicos que los clásicos semiólogos clasificaron en síndromes orgánicos y funcionales; los primeros causados por alteraciones estructurales a nivel histopatológico en el cerebro o sus envolturas, nombradas afecciones orgánicas propiamente dichas, y síntomáticas cuando afectan el metabolismo cerebral a distancia; los segundos sustentan los cambios a nivel molecular, afectando la constitución química del cerebro por factores psicosociales, hereditarios y congénitos. (1 Los avances neurobiológicos esclarecen la multicausalidad de los trastornos mentales y el papel organogénico del cerebro, sustentado en su capacidad intrínseca de reflejar la realidad objetiva, que al perderse origina el espectro psicopatológico que hoy conocemos. (2 Algunos autores contemporáneos a partir del resurgimiento del protagonismo cerebral en la cristalización de los trastornos mentales, plantean que las fronteras entre lo orgánico y lo funcional se quebraron y que la enfermedad mental es orgánica en toda su extensión dada la obligada participación etiológica del cerebro. Soy del criterio que la actual omnipresencia cerebral en la generación de los procesos psicológicos, es sin duda, una virtud trascendente de la ciencia

  10. La reinvención de lo público en la videocultura urbana

    Directory of Open Access Journals (Sweden)

    Néstor García Canclini

    2002-01-01

    Full Text Available ¿Se puede reconstruir lo público en una megalópolis donde lo privado invade todo, donde las reglas se reemplazan por el caos o por la simulación del control de quienes nos informan y vigilan? A partir de drásticos cambios producidos en la familia tradicional, la ciudad y el Estado-nación, se intenta replantear la definición de lo público en el nuevo tipo de experiencias urbanas establecidas por las megaciudades y los medios masivos de comunicación. Los medios electrónicos lo buscan construyendo imaginarios que articulan lo global y lo local así como en la visualidad publicitaria urbana, a través de la espectacularización de mercancías y servicios, incluidos aquellos a los que sólo acceden minorías. Esto lleva a evaluar en qué medida los medios cumplen una función pragmática o más bien una función simbólica y ritual.

  11. Lo-Dash essentials

    CERN Document Server

    Boduch, Adam

    2015-01-01

    If you are a curious JavaScript developer interested simultaneously in tweaking the efficiency of your code, as well as improving the conciseness of it, and maintaining the readability of it, then this is the book for you. Ideally, the book is intended for readers already working on JavaScript projects and using frameworks such as jQuery and Backbone. Even if you're already using Lo-Dash, this book will show you how to use it efficiently. While extensive JavaScript experience isn't a requirement, you should have at least some prior programming experience in order to best understand the concept

  12. Route-Over Forwarding Techniques in a 6LoWPAN

    Directory of Open Access Journals (Sweden)

    Andreas Weigel

    2014-12-01

    Full Text Available 6LoWPAN plays a major role within the protocol stack for the future Internet of Things. Its fragmentation mechanism enables transport of IPv6 datagrams with the required minimum MTU of 1280 bytes over 802.15.4-based networks. With the goal of a fully standardized WSN protocol stack currently necessitating a route-over approach, i.e., routing at the IP-layer, there are two main choices for any 6LoWPAN implementation with regard to datagram fragmentation: Hop-by-hop assembly or a cross-layered direct mode, which forwards individual 6LoWPAN fragments before the whole datagram has arrived. In addition to these two straightforward approaches, we propose enhancements based on adaptive rate-restriction for the direct forwarding and a retry control for both modes to reduce the number of losses of larger datagrams. An evaluation of these modes in a simulation environment and a hardware testbed indicate that the proposed enhancements can considerably improve PRR and latency within 6LoWPAN networks.

  13. Historia reciente del trabajo y los trabajadores. Apuntes sobre lo tradicional y lo nuevo, lo que cambia y permanece en el mundo del trabajo

    Directory of Open Access Journals (Sweden)

    Roxana Albanesi

    2015-07-01

    Full Text Available Referirse al trabajo es hacer mención a un concepto complejo y multifacético. A su vez, los trabajadores constituyen un grupo social heterogéneo cuya ubicación en la estructura social es diversa. En este artículo se buscar reflexionar acerca de las características actuales del trabajo. Se presenta una breve reseña histórica que remite a las diferentes formas que asume la relación capital-trabajo en el tiempo para detenerse, con mayor profundidad, en las transformaciones ocurridas desde la crisis del capitalismo industrial hasta nuestros días. La reflexión acerca de lo que cambió y lo que permanece como tendencias en el mundo del trabajo depende de la periodización con que se aborde la cuestión. La evolución general del capitalismo muestra que la informalidad, la precariedad, la inestabilidad son condiciones clásicas del trabajo cuando se encuentra sujeto a mercados autorregulados. Las diferencias quedan claramente identificadas cuando se toma como referencia el período del Estado de Bienestar. Desde esta perspectiva temporal, la desigualdad de los ingresos entre diferentes ramas y al interior de un mismo grupo no constituye una novedad, pero sí lo son la degradación de las condiciones de trabajo y la desprotección social. En la historia reciente, esta situación es percibida por los trabajadores como un incremento de la vulnerabilidad y de los riesgos. El desempleo como realidad o como amenaza permanente, las condiciones flexibles del trabajo, el debilitamiento de la creencia en soluciones colectivas, la resignación social, la organización de estrategias individuales e individualistas, son rasgos distintivos de la historia reciente de los trabajadores.

  14. Ülo Isberg : Tahtsin midagi Eesti heaks teha / Riho Laurisaar

    Index Scriptorium Estoniae

    Laurisaar, Riho

    2005-01-01

    14. juunil sõitis koos Estpla-11 kergejalaväerühmaga Iraaki koalitsioonivägede (Multinational Corps-Iraq) teavitusosakonna teenistusse reservohvitser Ülo Isberg. Sõjaväeametniku elu- ja teenistuskäigust. Lisa: Ülo Isberg

  15. Maurizio Lo Vetere (1965 - 2015)

    CERN Multimedia

    2015-01-01

    The high-energy physics community mourns the sudden loss of Maurizio Lo Vetere, CMS and TOTEM member, who was the victim of a bike accident.   On 8 August, 2015, during a mountain bike ride in the upland of his hometown of Genoa, Italy, 50-year-old Maurizio Lo Vetere fell down a scarp. By the time first-aiders arrived on the scene, it was too late. Maurizio was an Associate Professor of the University of Genoa and team leader of the Genoa group in CMS. He began his career in high-energy physics at CERN, working first as an undergraduate, and subsequently as a PhD student on experiment PS202 (JETSET) at LEAR. During his PhD years, he also contributed to experiment PS210, which produced and observed antihydrogen atoms for the first time. In the following years, he moved to experiment E835 at Fermilab, which was dedicated to the study of charmonium spectroscopy. In 1996, he joined the BaBar collaboration at SLAC, where, for a decade, he made significant contributions, in particular to the con...

  16. Discrimination of artificial categories structured by family resemblances: a comparative study in people (Homo sapiens) and pigeons (Columba livia).

    Science.gov (United States)

    Makino, Hiroshi; Jitsumori, Masako

    2007-02-01

    Adult humans (Homo sapiens) and pigeons (Columba livia) were trained to discriminate artificial categories that the authors created by mimicking 2 properties of natural categories. One was a family resemblance relationship: The highly variable exemplars, including those that did not have features in common, were structured by a similarity network with the features correlating to one another in each category. The other was a polymorphous rule: No single feature was essential for distinguishing the categories, and all the features overlapped between the categories. Pigeons learned the categories with ease and then showed a prototype effect in accord with the degrees of family resemblance for novel stimuli. Some evidence was also observed for interactive effects of learning of individual exemplars and feature frequencies. Humans had difficulty in learning the categories. The participants who learned the categories generally responded to novel stimuli in an all-or-none fashion on the basis of their acquired classification decision rules. The processes that underlie the classification performances of the 2 species are discussed.

  17. Porphyrin pattern and methemoglobin levels in Columba livia applied to assess toxicological risk by air pollution in urban areas.

    Science.gov (United States)

    Sicolo, Matteo; Tringali, Maria; Orsi, Federica; Santagostino, Angela

    2009-11-01

    The study has explored two conservative biomarkers, porphyrin pattern in guano and methemoglobin levels in blood of Columba livia, in order to assay their potential use for monitoring toxic effects induced by exposure to urban air pollution. Fieldwork was conducted between October 2003 and June 2005 in the city of Milan, Italy, by sampling the pigeons in different areas almost twice a week. Six air contaminants, CO, PM10, NO(2), O(3), SO(2), and C(6)H(6), plus polycyclic aromatic hydrocarbons (PAHs) in fine particles, temperature, and UV index, were considered. Protoporphyrins from pigeon excreta sampled outdoors were always higher than in indoor animals, particularly in winter. A positive correlation (p urban air showed significant differences from season to season but only in summer and autumn did the outdoor pigeons show higher values than indoor animals. In summer, a regression model with a positive correlation between O(3) and benzene was determined (p urban air pollution as well as for detecting complex interactions between contaminants in the urban air pollutant mixture was discussed.

  18. Pigeons (Columba livia) as Trainable Observers of Pathology and Radiology Breast Cancer Images.

    Science.gov (United States)

    Levenson, Richard M; Krupinski, Elizabeth A; Navarro, Victor M; Wasserman, Edward A

    2015-01-01

    Pathologists and radiologists spend years acquiring and refining their medically essential visual skills, so it is of considerable interest to understand how this process actually unfolds and what image features and properties are critical for accurate diagnostic performance. Key insights into human behavioral tasks can often be obtained by using appropriate animal models. We report here that pigeons (Columba livia)-which share many visual system properties with humans-can serve as promising surrogate observers of medical images, a capability not previously documented. The birds proved to have a remarkable ability to distinguish benign from malignant human breast histopathology after training with differential food reinforcement; even more importantly, the pigeons were able to generalize what they had learned when confronted with novel image sets. The birds' histological accuracy, like that of humans, was modestly affected by the presence or absence of color as well as by degrees of image compression, but these impacts could be ameliorated with further training. Turning to radiology, the birds proved to be similarly capable of detecting cancer-relevant microcalcifications on mammogram images. However, when given a different (and for humans quite difficult) task-namely, classification of suspicious mammographic densities (masses)-the pigeons proved to be capable only of image memorization and were unable to successfully generalize when shown novel examples. The birds' successes and difficulties suggest that pigeons are well-suited to help us better understand human medical image perception, and may also prove useful in performance assessment and development of medical imaging hardware, image processing, and image analysis tools.

  19. Visual artificial grammar learning: comparative research on humans, kea (Nestor notabilis) and pigeons (Columba livia)

    Science.gov (United States)

    Stobbe, Nina; Westphal-Fitch, Gesche; Aust, Ulrike; Fitch, W. Tecumseh

    2012-01-01

    Artificial grammar learning (AGL) provides a useful tool for exploring rule learning strategies linked to general purpose pattern perception. To be able to directly compare performance of humans with other species with different memory capacities, we developed an AGL task in the visual domain. Presenting entire visual patterns simultaneously instead of sequentially minimizes the amount of required working memory. This approach allowed us to evaluate performance levels of two bird species, kea (Nestor notabilis) and pigeons (Columba livia), in direct comparison to human participants. After being trained to discriminate between two types of visual patterns generated by rules at different levels of computational complexity and presented on a computer screen, birds and humans received further training with a series of novel stimuli that followed the same rules, but differed in various visual features from the training stimuli. Most avian and all human subjects continued to perform well above chance during this initial generalization phase, suggesting that they were able to generalize learned rules to novel stimuli. However, detailed testing with stimuli that violated the intended rules regarding the exact number of stimulus elements indicates that neither bird species was able to successfully acquire the intended pattern rule. Our data suggest that, in contrast to humans, these birds were unable to master a simple rule above the finite-state level, even with simultaneous item presentation and despite intensive training. PMID:22688635

  20. Study of pathological changes in digestive system of domestic pigeons (Columba livia in Mosul city

    Directory of Open Access Journals (Sweden)

    M. G. Saeed

    2010-01-01

    Full Text Available One hundred diseased cases of pigeons (Columba livia in Mosul city were examined, 67 birds (67% showed pathologicallesions in digestive system. Most of the gross and histopathological lesions occurred in intestine (29.3% followed byoropharynx, liver, esophagus, crop, proventriculus, and pancreas the values (20.8%, 16.6%, 12.5%, 10.4%, 6.2%, 4.2%respectively. Gross lesions of intestine showed severe tape worms infestation with petechial hemorrhage in some cases,histopathologically there were catarrhal enteritis, necrotic and hemorrhagic enteritis were less, and desquamation of mucosawith bacterial colonies. Gross lesions of oropharynx, esophagus and crop in most cases were yellow caseated masses ornecrotic material. In some cases white diphtheritic membrane with thickening of mucosa in esophagus, crop and proventriculuswere founded, petichial hemorrhage on the mucosa of proventriculus were less some cases. Histopathological lesions oforopharynx and esophagus were thickening of mucosa and presence of necrotic caseated foci on the submucosa. In crop therewere epithelial hyperplasia and in some cases infiltration of inflammatory cells with cocobacilli bacteria and desquamation ofepithelial cells were founded. In proventriculus desquamation and necrosis of epithelial cells of mucus glands with infiltrationof inflammatory cells. Gross lesions in liver and pancreas were limited represented by enlargement and congestion, histopathologically coagulative necrosis of hepatic cells with cocobacilli bacteria, pancreas showed two types of inflammationone was non-suppurative and another was suppurative.

  1. Purification, crystallization and preliminary X-ray diffraction studies on avian haemoglobin from pigeon (Columba livia)

    Science.gov (United States)

    Sathya Moorthy, Pon.; Neelagandan, K.; Balasubramanian, M.; Ponnuswamy, M. N.

    2009-01-01

    Haemoglobin is a physiologically significant metalloprotein that is involved in the exchange of gases for sustaining life. The respiratory system of birds is unique and complex compared with that of mammals. Many investigations of avian haemoglobins have revealed the presence of inositol pentaphosphate (IP5), a principal allosteric effector that is involved in regulation of their function. Structural investigations of avian haemoglobins are presently not adequate to explain their function. Efforts have been made in this direction in order to understand the oxygen-binding affinity involved in adapting to hypoxia in avian haemoglobins. Fresh whole blood was collected from pigeon (Columba livia) and purified using a DEAE cellulose anion-exchange chromatographic column. Crystallization of pigeon haemoglobin was accomplished using the hanging-drop vapour-diffusion method using PEG 3350 as a precipitant in 50 mM sodium acetate buffer pH 5.5 with 1 M NaCl. Data collection was carried out using a MAR345 image-plate detector system. The crystals diffracted to 2 Å resolution. Pigeon haemoglobin crystallizes in a triclinic space group, with two whole biological molecules in the asymmetric unit and with unit-cell parameters a = 55.005, b = 65.528, c = 104.370 Å, α = 78.742, β = 89.819, γ = 65.320°. PMID:19194000

  2. Development of HiLo Microscope and its use in In-Vivo Applications

    Science.gov (United States)

    Patel, Shreyas J.

    The functionality of achieving optical sectioning in biomedical research is invaluable as it allows for visualization of a biological sample at different depths while being free of background scattering. Most current microscopy techniques that offer optical sectioning, unfortunately, require complex instrumentation and thus are generally costly. HiLo microscopy, on the other hand, offers the same functionality and advantage at a relatively low cost. Hence, the work described in this thesis involves the design, build, and application of a HiLo microscope. More specifically, a standalone HiLo microscope was built in addition to implementing HiLo microscopy on a standard fluorescence microscope. In HiLo microscopy, optical sectioning is achieved by acquiring two different types of images per focal plane. One image is acquired under uniform illumination and the other is acquired under speckle illumination. These images are processed using an algorithm that extracts in-focus information and removes features and glare that occur as a result of background fluorescence. To show the benefits of the HiLo microscopy, several imaging experiments on various samples were performed under a HiLo microscope and compared against a traditional fluorescence microscope and a confocal microscope, which is considered the gold standard in optical imaging. In-vitro and ex-vivo imaging was performed on a set of pollen grains, and optically cleared mouse brain and heart slices. Each of these experiments showed great reduction in background scattering at different depths under HiLo microscopy. More importantly, HiLo imaging of optically cleared heart slice demonstrated emergence of different vasculature at different depths. Reduction of out-of-focus light increased the spatial resolution and allowed better visualization of capillary vessels. Furthermore, HiLo imaging was tested in an in-vivo model of a rodent dorsal window chamber model. When imaging the same sample under confocal microscope

  3. Inhibition of the reproductive system by deslorelin in male and female pigeons (Columba livia).

    Science.gov (United States)

    Cowan, Melinda Lee; Martin, Graeme Bruce; Monks, Deborah Jane; Johnston, Stephen Douglas; Doneley, Robert James Tyson; Blackberry, Margaret Anne

    2014-06-01

    Veterinary practitioners frequently encounter disorders of the reproductive system in avian patients. Management of these disorders relies on manipulating reproduction by modifying the environment, diet, and social interactions, and by the use of pharmacologic agents and surgery, with varying levels of success and side effects. An alternative is to use the gonadotropin-releasing hormone (GnRH) agonist deslorelin to suppress the pituitary-gonadal axis. To determine the efficacy of deslorelin in domestic pigeons (Columba livia), male (n = 10) and female (n = 10) birds each were implanted intramuscularly with a single long-acting implant containing 4.7 mg deslorelin. Untreated males (n = 11) and females (n = 10) were used as controls. The baseline serum concentration of luteinizing hormone (LH) was assayed at 7, 28, 56, and 84 days after treatment, and egg production was recorded weekly. In females, deslorelin administration significantly reduced serum LH concentrations compared to pretreatment levels at 7, 28, 56, and 84 days (P < .05). In males, deslorelin significantly reduced LH concentrations at 7, 28, and 56 days (P < .05). Female birds treated with deslorelin laid significantly fewer eggs over the course of the study (mean = 1.46, SEM = 0.84) compared with controls (mean = 5.54, SEM = 0.88). Deslorelin treatment had no discernible effect on body weight. Deslorelin is effective for controlling egg laying in female pigeons for at least 49 days, but further research is required to determine the effects on male fertility and the duration of action in both sexes.

  4. Gaasitoru, ujuv saun ning helisevad tuutud / Karin Paulus

    Index Scriptorium Estoniae

    Paulus, Karin, 1975-

    2008-01-01

    Veneetsia XI arhitektuuribiennaalile kandideerinud tööde tutvustus. Biennaali teemaks on "Majade taga. Arhitektuur väljaspool ehitisi". Eestit esindab projekt "Gaasitoru", autorid Maarja Kask ja Ralf Lõoke arhitektuuribüroost Salto ning skulptor Neeme Külm. Teise koha said Eve Kask, Signe Kivi ja Andrus Kõresaar tööga "Peatus". Kolmas koht läks Villem Tomiste projektile "Veealune Veneetsia"

  5. Pärnu Keskkonnahariduskeskus = Pärnu Environmental Education Centre

    Index Scriptorium Estoniae

    2015-01-01

    Pärnu Keskkonnahariduskeskus A.H. Tammsaare puiestee 57, valminud 2013. Arhitektuurivõistlus 2006, jagatud III koht. Võistlustöö autorid Maarja Kask, Karli Luik, Ralf Lõoke (Salto Arhitektuuribüroo). Arhitektid Maarja Kask, Karli Luik, Ralf Lõoke, Helin Kukk, Andro Mänd, Helen Rebane, Margus Tamm. Pärnumaa püsinäituse kujundus Malle Jürgenson, Krista Lepland (Laika, Belka & Strelka)

  6. El anudamiento de lo sexual y lo cultural en la obra de Freud

    Directory of Open Access Journals (Sweden)

    Gómez Sánchez, Carlos

    2007-02-01

    Full Text Available The study of the culture in Freud was not a mere complement, but it contributed from its beginning to forge the psychoanalytic hypotheses and concepts. It is essential, nevertheless, to indicate the characters and limits of the “applied psychoanalysis” (1. After reconsidering the Freudian concept of sexuality –driven, non instinctive– and the controversy with authors like Bloch, the purpose of this article is to show why –for Freud– it is the repressed sexuality that structures the psychic apparatus (2. Through Mourning and Melancholia and The Ego and the Id this article analyzes the knotting established by Freud between the sexuality and the culture, between the wish and the rule (3, with the final intention of finding in the tension between archaism and progress (4 one of the cultural problems boarded in Freud’s final works, the conception of history, and to point out the main lines of influence of the psychoanalysis in the philosophical thought of the twentieth century.El estudio de la cultura no fue en Freud un mero complemento, sino que contribuyó desde un principio a fraguar las hipótesis y conceptos psicoanalíticos. Es preciso, sin embargo, señalar los caracteres y límites del “psicoanálisis aplicado” (1. Tras reconsiderar el concepto freudiano de sexualidad –pulsional, no instintiva– y la polémica con autores como Bloch, se trata de poner de manifiesto por qué, para Freud, es la sexualidad lo que se reprime y estructura el psiquismo (2. A través de Duelo y melancolía y El yo y el ello se analiza el anudamiento establecido por Freud entre lo sexual y lo cultural, entre el deseo y la norma (3, para plantear, finalmente, en la tensión entre arcaísmo y progreso (4, uno de los problemas culturales abordados en las obras finales de Freud, el de la concepción de la historia, y apuntar las principales líneas de influencia del psicoanálisis en el pensamiento filosófico del siglo XX.

  7. Maniobras estratégicas: combinando lo razonable y lo efectivo en el discurso argumentativo

    Directory of Open Access Journals (Sweden)

    Frans H. van Eemeren

    2013-02-01

    Full Text Available Después de explicar su concepción de la argumentación como tema para teorizar, Frans H. van Eemeren presenta un esbozo del programa de investigación del acercamiento pragma-dialéctico a la argumentación, introduciendo los principales componentes de la teoría de la argumentación que resultan del desarrollo de este programa. Posteriormente se centra en el problema fundamental que confrontan los teóricos de la argumentación al buscar distinguir entre los movimientos argumentativos razonables y los falaces. Al respecto, presenta el tratamiento pragma-dialéctico de las falacias como una alternativa constructiva a las severas críticas dirigidas al tratamiento estándar lógico. En la perspectiva pragma-dialéctica, las falacias se consideran violaciones de las reglas para conducir una discusión crítica orientada a resolver una diferencia de opinión de fondo, lo que está en juego en el discurso argumentativo. Van Eemeren introduce la noción de maniobra estratégica para explicar el poder persuasivo de las falacias, a pesar de tratarse de argumentaciones que van en contra de lo razonable. La noción de maniobra estratégica captura el predicamento inherente a todo movimiento argumentativo de reconciliar, a la vez, la búsqueda de resultados efectivos con la necesidad de respetar parámetros razonables. Las falacias son descarrilamientos de las maniobras estratégicas que violan una o más reglas de la discusión crítica. A través de la distinción entre un argumento de autoridad razonable y el argumentum ad verecundiam (que corresponde con una falacia van Eemeren concluye su ensayo explicando, con este ejemplo, por qué los descarrilamientos de las maniobras estratégicas pueden, en la práctica, pasar tan fácilmente inadvertidos, lo que ayuda a que las falacias no sean detectadas.

  8. Library Service Marketing Based on SoLoMo%基于SoLoMo的图书馆服务营销

    Institute of Scientific and Technical Information of China (English)

    时婉璐

    2012-01-01

    SoLoMo is the integration of social, local and mobile. It is viewed as the future trend of the development of the internet, and offers new directions for the library service marketing. In the face of the change of users' information behaviors and the social information environment, libraries should catch and formulate timely strategies, use the concept of SoLoMo effectively, build the social media marketing map actively, establish the local word-of-mouth network, and benefit from the mobile, in order to meet the revolution and challenge presented by the new information environment.%由Social(社交)、Local(本地化)和Mobile(移动)整合而来的SoLoMo被一致认为是互联网未来的发展趋势,为图书馆未来的服务营销提供了新方向。面对用户信息行为、社会信息环境的变化,图书馆应该捕捉和制订适时的策略,有效利用SoLoMo概念,积极创建社会化媒体营销地图,建立本地化口碑网络,使图书馆在移动中得到实惠,迎接新信息环境带来的变革与挑战。

  9. Bajo vientre: Representaciones de la sexualidad en la cultura y el arte contemporáneo. El arte impuro: Entre lo público y lo privado

    OpenAIRE

    Cuéllar, Carlos A.

    1998-01-01

    Cuéllar, CA. (1998). Bajo vientre: Representaciones de la sexualidad en la cultura y el arte contemporáneo. El arte impuro: Entre lo público y lo privado. Banda aparte. (11):89-89. http://hdl.handle.net/10251/43155. 89 89 11

  10. El Silencio de la Sirena: lo Sublime en Alejandra Pizarnik

    Directory of Open Access Journals (Sweden)

    Julieta Lerman

    2012-12-01

    Full Text Available Algunas poéticas de las décadas del cincuenta y del sesenta parecerían constituirse en torno a un vacío, un silencio que a veces inspira la palabra poética y otras veces la aborta. Esa ambigüedad, característica de la poética de Alejandra Pizarnik, podemos entenderla como una “reedición” de la estética de lo sublime. Lo sublime es un concepto estético-filosófico que plantearon filósofos como Inmanuel Kant y Edmund Burke para pensar el arte romántico y, en el siglo XX, otros autores como Jean-François Lyotard, lo retomaron para analizar el arte de vanguardia. Así, lo sublime nos permite repensar la poética de Pizarnik en sus coincidencias y oposiciones a otras de la tradición moderna (como la de Charles Baudelaire o de las vanguardias latinoamericanas (como Oliverio Girondo y Vicente Huidobro.

  11. Optically sectioned in vivo imaging with speckle illumination HiLo microscopy

    Science.gov (United States)

    Lim, Daryl; Ford, Tim N.; Chu, Kengyeh K.; Mertz, Jerome

    2011-01-01

    We present a simple wide-field imaging technique, called HiLo microscopy, that is capable of producing optically sectioned images in real time, comparable in quality to confocal laser scanning microscopy. The technique is based on the fusion of two raw images, one acquired with speckle illumination and another with standard uniform illumination. The fusion can be numerically adjusted, using a single parameter, to produce optically sectioned images of varying thicknesses with the same raw data. Direct comparison between our HiLo microscope and a commercial confocal laser scanning microscope is made on the basis of sectioning strength and imaging performance. Specifically, we show that HiLo and confocal 3-D imaging of a GFP-labeled mouse brain hippocampus are comparable in quality. Moreover, HiLo microscopy is capable of faster, near video rate imaging over larger fields of view than attainable with standard confocal microscopes. The goal of this paper is to advertise the simplicity, robustness, and versatility of HiLo microscopy, which we highlight with in vivo imaging of common model organisms including planaria, C. elegans, and zebrafish.

  12. Fixação esquelética externa tipo Ia (unilateral-uniplanar para osteossíntese diafisária de úmero em pombos domésticos (Columba livia Type Ia (unilateral-uniplanar external Skeletal fixation for treatment of humeral diaphysis fracture in domestic pigeons (Columba livia

    Directory of Open Access Journals (Sweden)

    Alessandro Moraes Leotte

    2004-12-01

    Full Text Available Das várias patologias que podem acometer as aves, são mais freqüentes as fraturas de ossos longos das asas e dos membros pélvicos. Este experimento teve como objetivo observar, por meio de exames clínicos, histológicos e radiográficos, a resposta cicatricial óssea ao uso do fixador externo tipo Ia (unilateral-uniplanar na redução aberta de fratura diafisária, de úmero em pombos domésticos (Columba livia. Foram estudados 14 pombos com peso variando entre 290 e 420 gramas. A fratura foi realizada na diáfise do úmero direito e, logo após, estabilizada com aparelho de fixação externa tipo Ia, utilizando-se, como barra de fixação, o acrílico autopolimerizável. O tempo médio para o completo desaparecimento da linha de fratura foi de 28±6,44 dias e para formação de calo ósseo, 17±3,26 dias. As aves, mesmo com o aparelho de fixação, retornaram ao vôo aos 28±1,2 dias, exceto uma que não recuperou a capacidade de vôo. A técnica de fixação externa demonstrou ser eficaz para o tratamento de fraturas diafisárias de úmero em pombos domésticos.Among the various pathologies that can inflict birds, the long bones fractures of the wings, and pelvic members are more commom. Fourteeen domestic pigeons (Columba livia weighing 290 to 420g, were submitted to open reduction of humeral diaphysis fracture with external fixator type Ia (unilateral-uniplanar in order to evaluate the clinical, histological and radiographic evolution of the bone healing. The external fixator device was stabilized with methilmetacrylate acrylic. The average time necessary to the complete disappearance of the fracture line by radiographic evaluation was 28±6.44 days. The bone callus was identified at 17±3.26 postoperative days. The birds returned to flying in 28±1.2 days yet with the fixation device and only one did not recovere the flying abillity. The external fixation technique is an efficient method to treat diaphiseal humeral fracture in domestic

  13. Impact of foliage on LoRa 433MHz propagation in tropical environment

    Science.gov (United States)

    Ahmad, Khairol Amali; Salleh, Mohd Sharil; Segaran, Jivitraa Devi; Hashim, Fakroul Ridzuan

    2018-02-01

    LoRa is being considered as one of the promising system for Low-Power-Wide-Area-Network (LPWAN) to support the growth of Internet of Things (IoT) applications. Designed to operate in the industrial, scientific and medical (ISM) bands, LoRa had been tested and evaluated mainly in Europe and US in the 868 MHz and 915 MHz modulation bands. Using chirp spread spectrum technology, LoRa is expected to be robust against degredation. This paper provides some early results in the performance of LoRa signal propagation of 433 MHz modulation in tropical foliage environments.

  14. Are Birds Smarter Than Mathematicians? Pigeons (Columba livia) Perform Optimally on a Version of the Monty Hall Dilemma

    Science.gov (United States)

    Herbranson, Walter T.; Schroeder, Julia

    2011-01-01

    The “Monty Hall Dilemma” (MHD) is a well known probability puzzle in which a player tries to guess which of three doors conceals a desirable prize. After an initial choice is made, one of the remaining doors is opened, revealing no prize. The player is then given the option of staying with their initial guess or switching to the other unopened door. Most people opt to stay with their initial guess, despite the fact that switching doubles the probability of winning. A series of experiments investigated whether pigeons (Columba livia), like most humans, would fail to maximize their expected winnings in a version of the MHD. Birds completed multiple trials of a standard MHD, with the three response keys in an operant chamber serving as the three doors and access to mixed grain as the prize. Across experiments, the probability of gaining reinforcement for switching and staying was manipulated, and birds adjusted their probability of switching and staying to approximate the optimal strategy. Replication of the procedure with human participants showed that humans failed to adopt optimal strategies, even with extensive training. PMID:20175592

  15. Modelos democráticos con pretensiones emancipatorias: una invitación a transitar de lo racional a lo razonable

    Directory of Open Access Journals (Sweden)

    Mariluz Nova Laverde

    2016-07-01

    Full Text Available Los grandes debates suscitados por Teoría de la justicia de John Rawls determinaron lo que los analistas han denominado el giro político de su pensamiento, el cual se materializa en el Liberalismo político. Allí, Rawls consolida un modelo de democracia consensual, controvirtiendo y apartándose del liberalismo doctrinario. La hipótesis a desarrollar en este documento es que un análisis del paso de la concepción de un agente liberal individualista de Teoría de la justicia a la concepción política de persona de Liberalismo político favorece una lectura crítica de la posterior eclosión de teorías de la democracia como instrumento de emancipación, toda vez que pone de presente el carácter enajenante de la idea de racionalidad que ha conducido a la autodestrucción del proyecto de la Ilustración como ideario emancipatorio. Lo anterior, además, conduce a la reflexión respecto de lo que constituye un régimen justo, cuestión que cobra la mayor importancia en la coyuntura de búsquedas de salidas negociadas al conflicto armado en Colombia.

  16. LO FAMILIAR EN LAS CREENCIAS Y LAS CREENCIAS EN LO FAMILIAR”: FAMILIA, TRANSMISIÓN Y RELIGIÓN EN LA ARGENTINA ACTUAL.

    Directory of Open Access Journals (Sweden)

    Verónica Giménez-Béliveau

    2012-10-01

    Full Text Available En tanto dispositivo central de la reproducción social, la familia es una palanca fundamental de la transmisión de la religión. Es que el grupo doméstico, actúa tanto en el plano de lo “físico” como de lo “espiritual”: la reproducción social en las sociedades occidentales modernas reconoce como uno de sus lugares privilegiados a la familia nuclear, y esto se refiere tanto a la reproducción de sus miembros (nacimientos como a la reproducción de valores, estándares de vida, posiciones sociales y también adscripciones, prácticas y creencias religiosas. La propuesta de este trabajo es trazar algunas líneas de análisis en torno al eje familia-religión en la Argentina actual centrándonos en la transmisión familiar de las religiones. Reflexionaremos sobre la incidencia de lo familiar en la conformación de identidades religiosas y, a su vez, cómo lo religioso contribuye diferencialmente a la cohesión de las unidades domésticas. Para ello, analizaremos las tramas de la transmisión y apropiación familiar de creencias, prácticas y ritosreligiosos en la estructura social argentina.

  17. LO CIERTO Y LO INCIERTO DEL JUEGO Y LA LÚDICA EN LA ESCUELA

    Directory of Open Access Journals (Sweden)

    Jenny Johana Castro Ballén

    2014-03-01

    Full Text Available El presente escrito contiene la reflexión sobre el papel que cumplen el juego y la lúdica en la escuela apartir de lo que maestras y maestros piensan sobre estos dos conceptos y, en general, desde la preocupaciónporque cada vez más la escuela, como institución social, pareciera querer alejar al individuo deconstruirse como ser humano y social debido a su carácter prescriptivo hasta para el goce, el disfrutede placeres sencillos, el ocio, el tiempo libre, entre otros. Las ideas y cuestionamientos sobre las prácticas,usos y desusos del juego y la lúdica que aquí se exponen tienen como propósito invitar al lectora dialogar, actuar y transformar las prácticas educativas caracterizadas por actividades condicionadasque corroboran el deseo de control y disciplinamiento de la institución escolar, pues continúa predominandola perspectiva utilitaria del juego y la lúdica en la escuela. Desde allí se construye una críticacontundente que, se espera, anime la búsqueda y fortalecimiento de experiencias alternativas para eltiempo y el espacio escolar, subvirtiendo el orden establecido y reivindicando el placer y la diversiónen lo cotidiano.

  18. Optically Sectioned Imaging of Microvasculature of In-Vivo and Ex-Vivo Thick Tissue Models with Speckle-illumination HiLo Microscopy and HiLo Image Processing Implementation in MATLAB Architecture

    Science.gov (United States)

    Suen, Ricky Wai

    The work described in this thesis covers the conversion of HiLo image processing into MATLAB architecture and the use of speckle-illumination HiLo microscopy for use of ex-vivo and in-vivo imaging of thick tissue models. HiLo microscopy is a wide-field fluorescence imaging technique and has been demonstrated to produce optically sectioned images comparable to confocal in thin samples. The imaging technique was developed by Jerome Mertz and the Boston University Biomicroscopy Lab and has been implemented in our lab as a stand-alone optical setup and a modification to a conventional fluorescence microscope. Speckle-illumination HiLo microscopy combines two images taken under speckle-illumination and standard uniform-illumination to generate an optically sectioned image that reject out-of-focus fluorescence. The evaluated speckle contrast in the images is used as a weighting function where elements that move out-of-focus have a speckle contrast that decays to zero. The experiments shown here demonstrate the capability of our HiLo microscopes to produce optically-sectioned images of the microvasculature of ex-vivo and in-vivo thick tissue models. The HiLo microscope were used to image the microvasculature of ex-vivo mouse heart sections prepared for optical histology and the microvasculature of in-vivo rodent dorsal window chamber models. Studies in label-free surface profiling with HiLo microscopy is also presented.

  19. Genetic characterization of 11 microsatellite loci in Egyptian pigeons (Columba livia domestica) and their cross-species amplification in other Columbidae populations.

    Science.gov (United States)

    Ramadan, Sherif; Dawod, Ahmed; El-Garhy, Osama; Nowier, Amira M; Eltanany, Marwa; Inoue-Murayama, Miho

    2018-04-01

    This study aimed to analyze the genetic diversity and relationships of 10 Egyptian pigeon populations belonging to Columba livia domestica speciesusing 11 microsatellite markers and to investigate the success of these markers amplification across another eight pigeon species. Genomic DNA was isolated from feather samples of179 pigeon samples from 10 Egyptian breeds: Asfer Weraq (n=14), Austoraly (n=20), Reehani (n=21), Messawed (n=17), Nemssawy (n=27), Otatti (n=12), Morasla (n=17), Tumbler (n=22), Halaby Asfer (n=10), and Karakandy (n=19) in addition to Japanese feral pigeons (n=30). Genotyping was done using 11 specific polymorphic microsatellite makers. Moreover, 37 samples not belonging to C. livia domestica but belonging to another eight pigeon species were genotyped. The polymerase chain reaction (PCR) products were electrophoresed on an ABI 3130xl DNA Sequencer. The basic measures of genetic diversity and phylogenetic trees were computed using bioinformatics software. Across the 10 studied Egyptian populations, the number of alleles per locus ranged from 3 to 19 and the average number of alleles observed was 9.091. The lowest value of expected heterozygosity (0.373) was obtained for the Reehani breed, and the highest value (0.706) was found for Morasla breed. The overall expected heterozygosity of Egyptian pigeons was 0.548. The F ST coefficient which indicates fixation coefficients of subpopulations within the total population for the 11 loci varied from 0.318 to 0.114 with a relatively high mean (0.226). In our study, the F IS showed a relatively high average(0.037). The pairwise Reynolds's genetic distance between the11 studied pigeon populations recorded lower values between Otatti and Austoraly (0.025) and between Morasla and Japanese feral pigeons (0.054). These results are supported by clustering pattern either by the neighbor-joining phylogenetic tree or by a Bayesian clustering of STRUCTURE with the admixture method. We confirm the applicability of

  20. Genetic characterization of 11 microsatellite loci in Egyptian pigeons (Columba livia domestica) and their cross-species amplification in other Columbidae populations

    Science.gov (United States)

    Ramadan, Sherif; Dawod, Ahmed; El-Garhy, Osama; Nowier, Amira M.; Eltanany, Marwa; Inoue-Murayama, Miho

    2018-01-01

    Aim This study aimed to analyze the genetic diversity and relationships of 10 Egyptian pigeon populations belonging to Columba livia domestica speciesusing 11 microsatellite markers and to investigate the success of these markers amplification across another eight pigeon species. Methods Genomic DNA was isolated from feather samples of179 pigeon samples from 10 Egyptian breeds: Asfer Weraq (n=14), Austoraly (n=20), Reehani (n=21), Messawed (n=17), Nemssawy (n=27), Otatti (n=12), Morasla (n=17), Tumbler (n=22), Halaby Asfer (n=10), and Karakandy (n=19) in addition to Japanese feral pigeons (n=30). Genotyping was done using 11 specific polymorphic microsatellite makers. Moreover, 37 samples not belonging to C. livia domestica but belonging to another eight pigeon species were genotyped. The polymerase chain reaction (PCR) products were electrophoresed on an ABI 3130xl DNA Sequencer. The basic measures of genetic diversity and phylogenetic trees were computed using bioinformatics software. Results Across the 10 studied Egyptian populations, the number of alleles per locus ranged from 3 to 19 and the average number of alleles observed was 9.091. The lowest value of expected heterozygosity (0.373) was obtained for the Reehani breed, and the highest value (0.706) was found for Morasla breed. The overall expected heterozygosity of Egyptian pigeons was 0.548. The FST coefficient which indicates fixation coefficients of subpopulations within the total population for the 11 loci varied from 0.318 to 0.114 with a relatively high mean (0.226). In our study, the FIS showed a relatively high average(0.037). The pairwise Reynolds’s genetic distance between the11 studied pigeon populations recorded lower values between Otatti and Austoraly (0.025) and between Morasla and Japanese feral pigeons (0.054). These results are supported by clustering pattern either by the neighbor-joining phylogenetic tree or by a Bayesian clustering of STRUCTURE with the admixture method. Conclusions

  1. Study of innervation and vascularization of the thoracic limb of Columba livia

    Directory of Open Access Journals (Sweden)

    Raphaela da Cunha Franceschi

    2009-12-01

    Full Text Available No estudo referente aos territórios vásculo-nervosos em membro torácico de Pombos (Columba livia foram utilizados 10 animais. Após a retirada de penas e pele, procedeu-se à identificação dos nervos no membro torácico direito, iniciando-se pela aplicação de compressas de ácido acético glacial 3% e dissecação de cada ramo do plexo braquial e seus músculos de inervação. Para a identificação dos territórios vasculares realizou-se a abertura da cavidade toracoabdominal, canulação do coração seguida de injeção de látex sintético via ventrículo esquerdo, dissecação dos vasos, medição e confecção de esquemas dos resultados. O plexo braquial é composto pelos nervos axilar, radial, peitoral e medianoulnar, em que os dois primeiros são responsáveis pela inervação da musculatura extensora, enquanto os dois últimos responsabilizam-se pela motricidade da musculatura flexora. Ainda pode ser observado um plexo acessório. O tronco braquiocefálico surge da Aorta ascendente, sendo encontrado um tronco direito e um esquerdo, emitindo as artérias carótida comum e subclávia como troncos principais. Destes surgem vasos que irrigam a cabeça, a região cervical e os membros torácicos. Em todas as aves observou-se uma constância na irrigação e inervação da musculatura, articulações e ossos do membro torácico, onde se pode presumir que existe uma constante na delimitação dos territórios vásculo-nervosos.

  2. Lo práctico y lo formal. Arquetipos masculino/femenino de poder

    OpenAIRE

    García de León Álvarez, María Antonia

    2008-01-01

    La autora efectúa una síntesis de sus numerosas investigaciones sobre las élites femeninas españolas en los más diversos campos (académico, científico, político, periodístico, etc.) y su relación con el poder. Reconduce sus observaciones a dos arquetipos, al modo de dicotomías «levistrausianas»: lo práctico y formal, siendo el primero ejemplificado en la universal figura literaria quijotesca que la autora denomina «sanchas». Sobre dicha dualidad, la autora realiza un esfuerzo de interpretació...

  3. El acuerdo de París: entre lo posible y lo necesario

    OpenAIRE

    Heras Hernández, Francisco

    2017-01-01

    El 12 de Diciembre de 2015 en el seno de Naciones Unidas 195 países adoptaron el denominado Acuerdo de París, comprometiéndose a limitar las emisiones de gases de efecto invernadero(GEI), que son el motor del cambio climático. Una vez pasadas las primeras reacciones de satisfaccióno de decepción, el desarrollo del Acuerdo suscita una serie de interrogantes: ¿Qué retos plantea a las partes firmantes? ¿Qué repercusiones tendrá en el corto y en el medio plazo? Y lo más importante: ¿Será un i...

  4. Plasma exogenous creatinine excretion for the assessment of renal function in avian medicine--pharmacokinetic modeling in racing pigeons (Columba livia).

    Science.gov (United States)

    Scope, Alexandra; Schwendenwein, Ilse; Schauberger, Günther

    2013-09-01

    The diagnostic evaluation of the glomerular filtration rate by urinary clearance has significant practical limitations in birds because urine is excreted together with feces. Thus, pharmacokinetic modeling of an exogenous plasma creatinine clearance could be useful for assessing renal creatinine excretion in birds. For this study, creatinine (50 mg/kg) was administered to 2 groups of 15 pigeons (Columba livia) each; in one group by the intravenous (IV) route and in the second by the intramuscular (IM) route. The time series of the plasma creatinine concentrations were analyzed by pharmacokinetic models. Body mass-specific creatinine excretion was determined for IV and IM administration to be between 6.30 and 6.44 mL/min per kg, respectively. Body surface area-specific creatinine clearance, which is related to the metabolic rate, was calculated between 0.506 and 0.523 mL/min per dm2, respectively. The results showed that IV as well as IM administration can be used for assessing renal creatinine excretion in pigeons. For practical reasons, IM administration is recommended, with the use of the Bateman function to calculate creatinine elimination.

  5. Experimental infection of rock pigeons (Columba livia) with three West Nile virus lineage 1 strains isolated in Italy between 2009 and 2012.

    Science.gov (United States)

    Spedicato, M; Carmine, I; Bellacicco, A L; Marruchella, G; Marini, V; Pisciella, M; Di Francesco, G; Lorusso, A; Monaco, F; Savini, G

    2016-04-01

    West Nile virus (WNV) circulation dynamics in the context of the urban environment is not yet elucidated. In this perspective, three groups of eight rock pigeons (Columbia livia) were inoculated with three WNV lineage 1 strains isolated in Italy between 2009 and 2012. The pigeons did not develop any clinical signs consistent with WNV acute infection. All animals seroconverted and shed virus up to 15 days post-infection by the oral or cloacal routes. In all infected groups viraemia lasted for 4 days post-infection. No WNV-specific gross or histological lesions were found in infected birds compared to control birds and immunohistochemistry remained constantly negative from all tissues. The reservoir competence index was also assessed and it ranged between 0·11 and 0·14. This study demonstrates that pigeons are competent reservoir hosts for Italian WNV lineage 1 circulating strains thus potentially posing a risk to the public health system.

  6. What is effective is fair Lo eficaz es justo

    Directory of Open Access Journals (Sweden)

    Le Mouël Jacques

    1997-06-01

    Full Text Available In this text, which comes from Chapter 3 of his book, Jacques Le Mouel completes the philosophical reflection about the entrepreneurial myth of effectiveness founded in the sophism: "What is effective is true. What is true is faie. Therefore, what is effective is fair". The fact that management is elevated to the category of paradigm for the economic model of Western society and the collapse of the economies of the East has led to neglect that, now, we ourselves are the modelo His analysis of the supposed neutrality of science and of the differences between ethics and morality, in the framework of the firm and its relations with society, lead him to conclude that it is not true that what is effective is fair, and that the firm cannot serve as a model for contemporary society, since the end does not justify the means.En este texto, que corresponde al capitulo 3 de su libro, Jaques Le Mouël completa la reflexión filosófica sobre el mito empresarial de la eficacia funadado en el sofisma: "Lo eficaz es verdadero. Lo verdadero es justo. Luego, lo eficaz es justo". El hecho de elevar la administración a la categoría de paradigma del modelo económico de la sociedad occidental y el hundimiento de las economías del Este han llevado a ignorar que, ahora, el modelo somos nosotros mismos. Su análisis de la pretendida neutralidad de la ciencia y las diferencias entre ética y moral, en el marco de la empresa y en sus relaciones con la sociedad, lo lleva a concluir que no es cierto que lo eficaz sea justo y que la empresa no puede servir de modelo a la sociedad contemporánea, pues el fin no justifica los medios.

  7. LoRa Scalability: A Simulation Model Based on Interference Measurements.

    Science.gov (United States)

    Haxhibeqiri, Jetmir; Van den Abeele, Floris; Moerman, Ingrid; Hoebeke, Jeroen

    2017-05-23

    LoRa is a long-range, low power, low bit rate and single-hop wireless communication technology. It is intended to be used in Internet of Things (IoT) applications involving battery-powered devices with low throughput requirements. A LoRaWAN network consists of multiple end nodes that communicate with one or more gateways. These gateways act like a transparent bridge towards a common network server. The amount of end devices and their throughput requirements will have an impact on the performance of the LoRaWAN network. This study investigates the scalability in terms of the number of end devices per gateway of single-gateway LoRaWAN deployments. First, we determine the intra-technology interference behavior with two physical end nodes, by checking the impact of an interfering node on a transmitting node. Measurements show that even under concurrent transmission, one of the packets can be received under certain conditions. Based on these measurements, we create a simulation model for assessing the scalability of a single gateway LoRaWAN network. We show that when the number of nodes increases up to 1000 per gateway, the losses will be up to 32%. In such a case, pure Aloha will have around 90% losses. However, when the duty cycle of the application layer becomes lower than the allowed radio duty cycle of 1%, losses will be even lower. We also show network scalability simulation results for some IoT use cases based on real data.

  8. Homing pigeons (Columba livia) modulate wingbeat characteristics as a function of route familiarity.

    Science.gov (United States)

    Taylor, Lucy A; Portugal, Steven J; Biro, Dora

    2017-08-15

    Mechanisms of avian navigation have received considerable attention, but whether different navigational strategies are accompanied by different flight characteristics is unknown. Managing energy expenditure is critical for survival; therefore, understanding how flight characteristics, and hence energy allocation, potentially change with birds' familiarity with a navigational task could provide key insights into the costs of orientation. We addressed this question by examining changes in the wingbeat characteristics and airspeed of homing pigeons ( Columba livia ) as they learned a homing task. Twenty-one pigeons were released 20 times individually either 3.85 or 7.06 km from home. Birds were equipped with 5 Hz GPS trackers and 200 Hz tri-axial accelerometers. We found that, as the birds' route efficiency increased during the first six releases, their median peak-to-peak dorsal body (DB) acceleration and median DB amplitude also increased. This, in turn, led to higher airspeeds, suggesting that birds fly slower when traversing unfamiliar terrain. By contrast, after route efficiency stabilised, birds exhibited increasing wingbeat frequencies, which did not result in further increases in speed. Overall, higher wind support was also associated with lower wingbeat frequencies and increased DB amplitude. Our study suggests that the cost of early flights from an unfamiliar location may be higher than subsequent flights because of both inefficient routes (increased distance) and lower airspeeds (increased time). Furthermore, the results indicate, for the first time, that birds modulate their wingbeat characteristics as a function of navigational knowledge, and suggest that flight characteristics may be used as 'signatures' of birds' route familiarity. © 2017. Published by The Company of Biologists Ltd.

  9. Anatomical, histological and immunohistochemical study of testicular development in Columba livia (Aves: Columbiformes).

    Science.gov (United States)

    Olea, G B; Aguirre, M V; Lombardo, D M

    2018-07-01

    In this work, testicular ontogeny is analyzed at the anatomical, histological and immunohistochemical levels; the latter through the detection of GnRHR and PCNA in the testicles of embryos, neonates and juveniles of Columba livia. We analyzed 150 embryos, 25 neonates and 5 juveniles by means of observations under a stereoscopic magnifying glass and scanning electron microscope (SEM). The histological analysis was performed using hematoxylin-eosin staining techniques and the PAS reaction. For the immunohistochemical analysis, the expression of GnRHR and PCNA in embryos corresponding to stages 41, 43 and in neonates of 2, 5, 7 and 75 days post-hatch was revealed in testicular histological preparations. That gonadal outline is evident in stage 18. In stage 29, the testes are constituted of a medulla in which the PGCs are surrounded by the Sertoli cells, constituting the seminiferous tubules. From stage 37 a greater organization of the tubules is visualized and at the time of hatching the testicle is constituted of the closed seminiferous tubules, formed of the PGCs and Sertoli cells. The Leydig cells are evident outside the tubules. In the juvenile stages, the differentiation of germline cells and the organization of small vessels that irrigate the developing testicle begin to be visible. In the analyzed stages, the immunodetection of the GnRHR receptor and PCNA revealed specific marking in the plasma membrane and in the perinuclear zone for GnRHR and in the nucleus of the germline cells in juvenile testicles for PCNA. These results can be used as a basis for further study of endocrine regulation events during testicular ontogeny in avian species. Copyright © 2018 Elsevier GmbH. All rights reserved.

  10. Clinical and serological tests for arboviruses in free-living domestic pigeons (Columba livia).

    Science.gov (United States)

    Ramos, Bruna Alves; Chiang, Jannifer Oliveira; Martins, Lívia Carício; Chagas, Liliane Leal das; Silva, Franko de Arruda E; Ferreira, Milene Silveira; Freitas, Maria Nazaré Oliveira; Alcantara, Bianca Nascimento de; Silva, Sandro Patroca da; Miranda, Stefânia Araújo; Sepulvreda, Barbara Alves; Corrêa, Layna Thayssa Guimarães; Negrão, Andréa Maria Góes; Vasconcelos, Pedro Fernando da Costa; Casseb, Alexandre do Rosário

    2017-08-01

    In this study, we evaluated the role of free-living domestic pigeons (Columba livia) as a reservoir of arboviruses in the city of Belém, state of Pará, Brazil. We investigated the presence of antibodies against the most prevalent arboviruses. This study was aimed at evaluating some clinical and physical parameters of domestic pigeons, including the presence of antibodies to Amazon-endemic arboviruses. Eighty-five healthy pigeons were captured in Mangal das Garças Park, in Belém, and were bled. Upon capture, the birds were subjected to a clinical examination in search of alterations that could indicate the presence of arboviruses. Blood samples were converted to serum and tested using the haemagglutination inhibition (HI) technique with a panel of 19 antigens of arboviruses circulating in the Amazon. The confirmation assay for the positive reactions to the viral species tested by HI was a neutralisation test in new-born Swiss albino mice (Mus musculus) [mouse neutralisation test (MNT)]. A total of 10 (11.8%) serum samples tested positive for antiflavivirus antibodies by HI. All the samples positive for the HI test were subjected to MNT for detection of viruses and yielded negative results (logarithmic neutralisation index < 1.7). The results represent the first serological detection of antiarbovirus antibodies in domestic pigeons as potential hosts of arboviruses in Brazil. The detection of haemagglutination-inhibiting antibodies against genus Flavivirus indicated that there was recent contact between the analysed domestic pigeons and these arboviruses. Further studies are needed to evaluate the role of free-living pigeons in the maintenance cycle and spread of arboviruses in the Amazon.

  11. Cine y censura en Chile: Entre lo local y lo transnacional, 1910-1945

    OpenAIRE

    Purcell, Fernando

    2011-01-01

    Este trabajo considera el fenómeno de la censura cinematográfica en Chile durante la primera mitad del siglo XX. El argumento central, elaborado a partir de documentación recogida en Chile y los Estados Unidos, es que lejos de ser un fenómeno estrictamente local, la censura cinematográfica chilena se debatió y aplicó a la luz del diálogo y participación de numerosos y variados actores internacionales. Esto fue posible gracias al predominio hegemónico global del cine hollywoodense, lo que faci...

  12. Evaluation of gastroscopy and biopsy of the proventriculus and ventriculus in pigeons (Columba livia).

    Science.gov (United States)

    Sladakovic, Izidora; Ellis, Angela E; Divers, Stephen J

    2017-01-01

    OBJECTIVE To evaluate the efficacy and safety of gastroscopy and biopsy of the proventriculus and ventriculus in pigeons (Columba livia). ANIMALS 15 adult pigeons. PROCEDURES Each pigeon was anesthetized, and the upper gastrointestinal tract (from the cervical portion of the esophagus to the ventriculus) was endoscopically evaluated by use of a rigid endoscope inserted orally. Saline (0.9% NaCl) solution was orally infused to achieve lumen dilation and visibility. Two mucosal biopsy specimens were collected from each of the proventriculus and ventriculus, histologically evaluated, and graded for crush artifacts and depth. Pigeons were monitored for adverse effects for 3 to 6 days after the procedure, after which they were euthanized for necropsy. RESULTS Gastroscopy via the oral approach provided excellent visibility of the lumen and mucosal surfaces of the proventriculus and cranial portion of the ventriculus and was safe provided that appropriate precautions were taken. Two intraoperative deaths occurred at the beginning of the study; following procedure refinement, no additional deaths occurred. No major adverse effects of the procedure were detected in the remaining 13 pigeons during the postoperative monitoring period or at necropsy. Diagnostic quality of proventriculus specimens was adequate for 10 of 13 pigeons. Eight of 13 ventriculus specimens were of inadequate quality, and only 3 were of adequate quality. CONCLUSIONS AND CLINICAL RELEVANCE Gastroscopy was useful for evaluating the lumen and mucosal surface of the proventriculus and ventriculus in pigeons, and biopsy of those organs was safely performed with the appropriate technique. Further evaluation of these techniques is needed in birds with clinical disease and birds of other species.

  13. Purification, crystallization and preliminary X-ray diffraction studies on avian haemoglobin from pigeon (Columba livia)

    International Nuclear Information System (INIS)

    Sathya Moorthy, Pon.; Neelagandan, K.; Balasubramanian, M.; Ponnuswamy, M. N.

    2009-01-01

    Crystallization of pigeon haemoglobin at low pH (5.5) and high ionic concentration (1 M) using the hanging-drop vapour-diffusion method is reported. Haemoglobin is a physiologically significant metalloprotein that is involved in the exchange of gases for sustaining life. The respiratory system of birds is unique and complex compared with that of mammals. Many investigations of avian haemoglobins have revealed the presence of inositol pentaphosphate (IP5), a principal allosteric effector that is involved in regulation of their function. Structural investigations of avian haemoglobins are presently not adequate to explain their function. Efforts have been made in this direction in order to understand the oxygen-binding affinity involved in adapting to hypoxia in avian haemoglobins. Fresh whole blood was collected from pigeon (Columba livia) and purified using a DEAE cellulose anion-exchange chromatographic column. Crystallization of pigeon haemoglobin was accomplished using the hanging-drop vapour-diffusion method using PEG 3350 as a precipitant in 50 mM sodium acetate buffer pH 5.5 with 1 M NaCl. Data collection was carried out using a MAR345 image-plate detector system. The crystals diffracted to 2 Å resolution. Pigeon haemoglobin crystallizes in a triclinic space group, with two whole biological molecules in the asymmetric unit and with unit-cell parameters a = 55.005, b = 65.528, c = 104.370 Å, α = 78.742, β = 89.819, γ = 65.320°

  14. Žürii kommenteerib Kultuurkapitali arhitektuuripreemiaid 2008 / Marika Lõoke, Laila Põdra, Liina Jänes... [jt.

    Index Scriptorium Estoniae

    2009-01-01

    Peapreemia: Markus Kaasik, Andres Ojari, Ilmar Valdur, Mihkel Tüür, Kalle Komissarov (Pärnu Keskraamatukogu hoone), tegevuspreemia: Maarja Kask, Ralf Lõoke, Neeme Külm, Ingrid Ruudi (projekt Gaasitoru 11. Veneetsia arhitektuuribiennaalil), aastapreemia: Maarja Kask, Ralf Lõoke, Karli Luik (Tartu Kesklinna Kooli juurdeehitus) ja Peep Jänes (Raudna Põhikooli spordihoone), sisearhitektuuri preemia: Tea Tammelaan, Malle Jürgenson, Krista Lepland, restaureerimispreemia: Mari Hammer, Tiiu Lõhmus, Helve Ilves, Villu Kadakas (Vanalinna Hariduskolleegiumi hoone)

  15. A Dual Key-Based Activation Scheme for Secure LoRaWAN

    Directory of Open Access Journals (Sweden)

    Jaehyu Kim

    2017-01-01

    Full Text Available With the advent of the Internet of Things (IoT era, we are experiencing rapid technological progress. Billions of devices are connected to each other, and our homes, cities, hospitals, and schools are getting smarter and smarter. However, to realize the IoT, several challenging issues such as connecting resource-constrained devices to the Internet must be resolved. Recently introduced Low Power Wide Area Network (LPWAN technologies have been devised to resolve this issue. Among many LPWAN candidates, the Long Range (LoRa is one of the most promising technologies. The Long Range Wide Area Network (LoRaWAN is a communication protocol for LoRa that provides basic security mechanisms. However, some security loopholes exist in LoRaWAN’s key update and session key generation. In this paper, we propose a dual key-based activation scheme for LoRaWAN. It resolves the problem of key updates not being fully supported. In addition, our scheme facilitates each layer in generating its own session key directly, which ensures the independence of all layers. Real-world experimental results compared with the original scheme show that the proposed scheme is totally feasible in terms of delay and battery consumption.

  16. COMPARAÇÃO DO MÉTODO DA AMPUTAÇÃO DO II E III METACARPIANOS (PINIONING E DA TERMOCAUTERIZAÇÃO PARA COIBIR O VÔO EM POMBOS (Columbia livia

    Directory of Open Access Journals (Sweden)

    Maria Clorinda Soares Fioravanti

    2006-10-01

    Full Text Available Esse estudo teve como objetivo avaliar o efeito da termocauterização do folículo após a remoção das penas rêmiges primárias e da amputação do II e III metacarpianos (pinioning para coibir o vôo em pombos (Columba livia. Foram utilizadas trinta aves adultas, distribuídas de forma igualitária entre machos e fêmeas. Os animais foram alocados ao acaso em três grupos de dez animais. Nas aves do grupo 1 utilizou-se a técnica de pinioning; nas do grupo 2 praticou-se a termocauterização do folículo após a remoção das penas rêmiges primárias. O grupo 3 foi utilizado como controle. Quando se utilizou a técnica de pinioning, não houve crescimento das penas rêmiges primárias, exceto em um pássaro (10%, em que os ossos foram amputados no ponto médio entre as articulações carpo-metacarpo e falange. No grupo em que se utilizou a termocauterização, observaramse no pós-operatório necrose e sinais típicos de queimaduras, além de reposição parcial ou total das penas rêmiges primárias. Nesse grupo duas aves voaram normalmente, três voaram com dificuldade, duas alçaram vôos baixos e curtos e três não voaram. Avaliando os dois procedimentos, concluiu-se que a técnica de pinioning coibiu o vôo em 100% das aves operadas enquanto a termocauterização só coibiu 20%. PALAVRAS-CHAVE: Asa, pinionig, termocauterização, pombo (Columbia livia.

  17. Analyzing speckle contrast for HiLo microscopy optimization

    Science.gov (United States)

    Mazzaferri, J.; Kunik, D.; Belisle, J. M.; Singh, K.; Lefrançois, S.; Costantino, S.

    2011-07-01

    HiLo microscopy is a recently developed technique that provides both optical sectioning and fast imaging with a simple implementation and at a very low cost. The methodology combines widefield and speckled illumination images to obtain one optically sectioned image. Hence, the characteristics of such speckle illumination ultimately determine the quality of HiLo images and the overall performance of the method. In this work, we study how speckle contrast influence local variations of fluorescence intensity and brightness profiles of thick samples. We present this article as a guide to adjust the parameters of the system for optimizing the capabilities of this novel technology.

  18. Lo que dijo Casimiro Eiger de Ramírez

    Directory of Open Access Journals (Sweden)

    Casimiro Eiger

    1995-01-01

    Full Text Available La evolución de los artistas colombianos -si en este caso puede hablarse de evolución y no, más bien, de una transformación artificial- procede generalmente por saltos, por bruscas metamorfosis, por inconcebibles cambios. Los artistas nacionales no tienen, por lo general, la paciencia de esperar que unos procesos interiores de que tienen una vaga conciencia maduren en ellos, lleguen a su punto, se completen y estallen luego en una corona de indudables hazañas. Ellos quieren cosechar las frutas antes de la sazón , y -con tal de presentar algún aspecto insospechado- fuerzan las tendencias incipientes de su propio ser, las obligan a aparecer más definidas de lo que son y se contentan con una fisonomía provisional de lo que, después de unos años de estudio y de tranquila decantación, podría surgir como algo realmente nuevo, persuasivo y poderoso.

  19. El Silencio de la Sirena: lo Sublime en Alejandra Pizarnik

    Directory of Open Access Journals (Sweden)

    Julieta Lerman

    2012-03-01

    Full Text Available http://dx.doi.org/10.5007/1984-784X.2012v12n17p85 Algunas poéticas de las décadas del cincuenta y del sesenta parecerían constituirse en torno a un vacío, un silencio que a veces inspira la palabra poética y otras veces la aborta. Esa ambigüedad, característica de la poética de Alejandra Pizarnik, podemos entenderla como una “reedición” de la estética de lo sublime. Lo sublime es un concepto estético-filosófico que plantearon filósofos como Inmanuel Kant y Edmund Burke para pensar el arte romántico y, en el siglo XX, otros autores como Jean-François Lyotard, lo retomaron para analizar el arte de vanguardia. Así, lo sublime nos permite repensar la poética de Pizarnik en sus coincidencias y oposiciones a otras de la tradición moderna (como la de Charles Baudelaire o de las vanguardias latinoamericanas (como Oliverio Girondo y Vicente Huidobro.

  20. Performance Evaluation of Low Cost LoRa Modules in IoT Applications

    Science.gov (United States)

    Daud, Shuhaizar; Shi Yang, Teoh; Asmi Romli, Muhamad; Awang Ahmad, Zahari; Mahrom, Norfadila; Raof, Rafikha Aliana A.

    2018-03-01

    LoRa is a low power long range wireless communication platform that is designed as an efficient communication platform for small, low powered devices. This makes it very suitable for battery powered devices and IoT implementation. This paper evaluates some low cost LoRa modules available on the market and their suitability, energy efficiency and performance during operation. Two low cost LoRa transceiver from Semtech Industries, the SX1272 and SX1278 were tested for their power consumption and maximum transmission range. This study have evaluated the two LoRa solutions and found that the SX1278 have a better transmission range and uses lower energy compared to the SX1272 thus making it more suitable for embedded implementation as a data gateway.

  1. Who are the real bird brains? Qualitative differences in behavioral flexibility between dogs (Canis familiaris) and pigeons (Columba livia).

    Science.gov (United States)

    Laude, Jennifer R; Pattison, Kristina F; Rayburn-Reeves, Rebecca M; Michler, Daniel M; Zentall, Thomas R

    2016-01-01

    Pigeons given a simultaneous spatial discrimination reversal, in which a single reversal occurs at the midpoint of each session, consistently show anticipation prior to the reversal as well as perseveration after the reversal, suggesting that they use a less effective cue (time or trial number into the session) than what would be optimal to maximize reinforcement (local feedback from the most recent trials). In contrast, rats (Rattus norvegicus) and humans show near-optimal reversal learning on this task. To determine whether this is a general characteristic of mammals, in the present research, pigeons (Columba livia) and dogs (Canis familiaris) were tested with a simultaneous spatial discrimination mid-session reversal. Overall, dogs performed the task more poorly than pigeons. Interestingly, both pigeons and dogs employed what resembled a timing strategy. However, dogs showed greater perseverative errors, suggesting that they may have relatively poorer working memory and inhibitory control with this task. The greater efficiency shown by pigeons with this task suggests they are better able to time and use the feedback from their preceding choice as the basis of their future choice, highlighting what may be a qualitative difference between the species.

  2. LoRa Scalability: A Simulation Model Based on Interference Measurements

    Directory of Open Access Journals (Sweden)

    Jetmir Haxhibeqiri

    2017-05-01

    Full Text Available LoRa is a long-range, low power, low bit rate and single-hop wireless communication technology. It is intended to be used in Internet of Things (IoT applications involving battery-powered devices with low throughput requirements. A LoRaWAN network consists of multiple end nodes that communicate with one or more gateways. These gateways act like a transparent bridge towards a common network server. The amount of end devices and their throughput requirements will have an impact on the performance of the LoRaWAN network. This study investigates the scalability in terms of the number of end devices per gateway of single-gateway LoRaWAN deployments. First, we determine the intra-technology interference behavior with two physical end nodes, by checking the impact of an interfering node on a transmitting node. Measurements show that even under concurrent transmission, one of the packets can be received under certain conditions. Based on these measurements, we create a simulation model for assessing the scalability of a single gateway LoRaWAN network. We show that when the number of nodes increases up to 1000 per gateway, the losses will be up to 32%. In such a case, pure Aloha will have around 90% losses. However, when the duty cycle of the application layer becomes lower than the allowed radio duty cycle of 1%, losses will be even lower. We also show network scalability simulation results for some IoT use cases based on real data.

  3. G-LoSA for Prediction of Protein-Ligand Binding Sites and Structures.

    Science.gov (United States)

    Lee, Hui Sun; Im, Wonpil

    2017-01-01

    Recent advances in high-throughput structure determination and computational protein structure prediction have significantly enriched the universe of protein structure. However, there is still a large gap between the number of available protein structures and that of proteins with annotated function in high accuracy. Computational structure-based protein function prediction has emerged to reduce this knowledge gap. The identification of a ligand binding site and its structure is critical to the determination of a protein's molecular function. We present a computational methodology for predicting small molecule ligand binding site and ligand structure using G-LoSA, our protein local structure alignment and similarity measurement tool. All the computational procedures described here can be easily implemented using G-LoSA Toolkit, a package of standalone software programs and preprocessed PDB structure libraries. G-LoSA and G-LoSA Toolkit are freely available to academic users at http://compbio.lehigh.edu/GLoSA . We also illustrate a case study to show the potential of our template-based approach harnessing G-LoSA for protein function prediction.

  4. Arhitektuurikriitik Aale Kask arvab nii : ... / Aale Kask

    Index Scriptorium Estoniae

    Kask, Aale

    2004-01-01

    Korterelamust A. Adamsoni t. 24 ja Kaupmehe t. 6, Tallinna Säästva Arengu ja Planeerimise Ameti poolt algatatud Tallinna kõrghoonete paiknemise teemaplaneeringu koostamisest, graafiliselt prinditud mustriga klaasi kasutamisest Tartu mnt. 2 asuva parkimismaja fassaadil, Sõle t. 1 asuva büroohoone aiapiirdest, Kawe Plaza sildist ja plazade rohkusest Tallinnas

  5. Tamoxifen-loaded lecithin organogel (LO) for topical application: Development, optimization and characterization.

    Science.gov (United States)

    Bhatia, Amit; Singh, Bhupinder; Raza, Kaisar; Wadhwa, Sheetu; Katare, Om Prakash

    2013-02-28

    Lecithin organogels (LOs) are semi-solid systems with immobilized organic liquid phase in 3-D network of self-assembled gelators. This paper attempts to study the various attributes of LOs, starting from selection of materials, optimization of influential components to LO specific characterization. After screening of various components (type of gelators, organic and aqueous phase) and construction of phase diagrams, a D-optimal mixture design was employed for the systematic optimization of the LO composition. The response surface plots were constructed for various response variables, viz. viscosity, gel strength, spreadability and consistency index. The optimized LO composition was searched employing overlay plots. Subsequent validation of the optimization study employing check-point formulations, located using grid search, indicated high degree of prognostic ability of the experimental design. The optimized formulation was characterized for morphology, drug content, rheology, spreadability, pH, phase transition temperatures, and physical and chemical stability. The outcomes of the study were interesting showing high dependence of LO attributes on the type and amount of phospholipid, Poloxamer™, auxillary gelators and organic solvent. The optimized LO was found to be quite stable, easily applicable and biocompatible. The findings of the study can be utilized for the development of LO systems of other drugs for the safer and effective topical delivery. Crown Copyright © 2013. Published by Elsevier B.V. All rights reserved.

  6. A survey on LPWA technology: LoRa and NB-IoT

    Directory of Open Access Journals (Sweden)

    Rashmi Sharan Sinha

    2017-03-01

    Full Text Available By 2020, more than twenty five billion devices would be connected through wireless communications. In accordance with the rapid growth of the internet of things (IoT market, low power wide area (LPWA technologies have become popular. In various LPWA technologies, narrowband (NB-IoT and long range (LoRa are two leading technologies. In this paper, we provide a comprehensive survey on NB-IoT and LoRa as efficient solutions connecting the devices. It is shown that unlicensed LoRa has advantages in terms of battery lifetime, capacity, and cost. Meanwhile, licensed NB-IoT offers benefits in terms of QoS, latency, reliability, and range.

  7. Repair of Tibiotarsal Rotation in 7 Chukar Partridges (Alectoris chukar) and 12 Domestic Pigeons (Columba livia domestica) with Type-2 External Skeletal Fixator Intramedullary Pin Tie-in.

    Science.gov (United States)

    Kaya, Didar Aydin; Özsoy, Serhat

    2017-09-01

    Rotational deformities of the long bones affect various avian species. Tibiotarsal rotation may cause the leg to deviate up to 180° from the dorsoplantar axis in a matter of days, thus preventing the birds from walking freely and leading to the inability to stand. In this study, tibiotarsal rotation observed in pigeons and partridges was managed by creating a closed fracture in the tibiotarsus and then, following reduction, stabilizing it with an intramedullary tie-in Type 2 external skeletal fixation system. Functional healing was achieved in 12 pigeons (Columba livia domestica; mean healing time, 38 days) and 7 partridges (Alectoris chukar; mean healing time, 40 days). This treatment was successful. In small bird species (<1 kg), this simple and inexpensive surgical intervention may provide a highly effective method for the treatment of rotational deformities.

  8. An Improved 6LoWPAN Hierarchical Routing Protocol

    Directory of Open Access Journals (Sweden)

    Xue Li

    2015-10-01

    Full Text Available IETF 6LoWPAN working group is engaged in the IPv6 protocol stack research work based on IEEE802.15.4 standard. In this working group, the routing protocol is one of the important research contents. In the 6LoWPAN, HiLow is a well-known layered routing protocol. This paper puts forward an improved hierarchical routing protocol GHiLow by improving HiLow parent node selection and path restoration strategy. GHiLow improves the parent node selection by increasing the choice of parameters. Simutaneously, it also improves path recovery by analysing different situations to recovery path. Therefore, GHiLow contributes to the ehancement of network performance and the decrease of network energy consumption.

  9. Scalability analysis of large-scale LoRaWAN networks in ns-3

    OpenAIRE

    Abeele, Floris Van den; Haxhibeqiri, Jetmir; Moerman, Ingrid; Hoebeke, Jeroen

    2017-01-01

    As LoRaWAN networks are actively being deployed in the field, it is important to comprehend the limitations of this Low Power Wide Area Network technology. Previous work has raised questions in terms of the scalability and capacity of LoRaWAN networks as the number of end devices grows to hundreds or thousands per gateway. Some works have modeled LoRaWAN networks as pure ALOHA networks, which fails to capture important characteristics such as the capture effect and the effects of interference...

  10. 75 FR 61478 - D'Lo Gas Storage, LLC; Notice of Petition

    Science.gov (United States)

    2010-10-05

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. CP10-504-000] D'Lo Gas Storage, LLC; Notice of Petition September 24, 2010. Take notice that on September 21, 2010, D'Lo Gas.... CP10-504-000, a petition for an Exemption of Temporary Acts and Operations and Request for Expedited...

  11. ¿Lo aprecias o lo odias? Tus gestos al hablar pueden delatarte

    Directory of Open Access Journals (Sweden)

    Miriam Sicre Márquez

    2017-06-01

    Full Text Available Los diestros tienden a valorar positivamente la derecha y los zurdos la izquierda. En un estudio reciente se analizaron los gestos que acompañaban los discursos de los candidatos a presidente de EE.UU. John Kerry y George Bush (ambos diestros en las elecciones de 2004, y de John McCain y Barack Obama (ambos zurdos en las de 2008. Los candidatos diestros usaron más la mano derecha cuando hablaban de cosas positivas y la mano izquierda para cosas negativas, en tanto que los zurdos hicieron lo contrario. Esto revela un vínculo hasta ahora desconocido entre la lateralidad manual, los gestos expresivos y la emoción.

  12. Intrusion Detection and light weight Firewall for the 6LoWPAN networks

    OpenAIRE

    Shreenivas, Dharmini

    2014-01-01

    IPv6 over Low power WPAN (6loWPAN) is an adaption layer introduced between the link layer and the network layer in the TCP/IP protocol stack to t the IPv6 datagrams over the IEEE 802.15.4 link layer. 6loWPAN networks comprise of internet enabled resource-constrained smart objects which are interconnected with each other through the Internet Protocol (IPv6). In Internet of Things (IoT), smart devices of the 6loWPAN networks are connected to the unsecured public Internet. RPL (Routing Protocol ...

  13. Todo lo que se nos brinda...: presentismo y simultaneidad. Fenomenología de lo contemporáneo (collage y saturación

    Directory of Open Access Journals (Sweden)

    César Moreno Márquez

    2012-01-01

    Full Text Available Aunque no cabe duda de que el objeto ha sido máximamente relevante como modo de presencia, hay otra modalidad de presencia, no menos decisiva, aunque mucho más desatendida, como es la de simultaneidad de las perspectivas de un objeto (lo que nos conduciría al cubismo y la contemporaneidad de lo heterogéneo (collage. La atención a lo que supusieron, en tal sentido, algunas prácticas de las vanguardias en el primer tercio del siglo XX, puede resultar muy esclarecedora de cara a la investigación de ciertas experiencias que aunque periféricas o monstruosas son imprescindibles no sólo para una ampliación de las posibilidades del pensar fenomenológico, sino también para la profundización de la problemática filosófica de la hipercomunicación, que caracteriza a nuestro entorno civilizatorio. Although there is no doubt that the object has been very relevant as a way of presence, there is another form of presence, no less decisive, though much more disregarded, as is the one of simultaneity of perspectives of an object (which would lead us to cubism and contemporaneity of the heterogeneous (collage. To pay attention to wich they supposed, in such sense, some avant-garde practices in the first third of the twentieth century can be very enlightening in order to research experiences that although peripherals or monstruous, they are essential not only for expanding the possibilities of phenomenological thinking, but also to the deepening of the philosophical problem of hipercomunication, that characterizes our civilizational environment.

  14. Association of MYF5 and KLF15 gene polymorphisms with carcass traits in domestic pigeons (Columba livia).

    Science.gov (United States)

    Yin, Z Z; Dong, X Y; Dong, D J; Ma, Y Z

    2016-10-01

    Single nucleotide polymorphisms (SNPs) in the exons of the myogenic factor 5 (MYF5) and Kruppel-like factor 15 (KLF15) genes were identified and analysed by using DNA sequencing methods in 60 female domestic pigeons (Columba livia). Five SNPs (T5067A, C5084T, C5101T, T5127A and C5154G) were detected in exon 3 of MYF5 and 6 SNPs (C1398T, C1464T, G1542A, C1929T, G1965A and A2355G) were found in exon 2 of KLF15, respectively. The analysis revealed three genotypes, in which the AA genotype was dominant and the A allele showed a dominant advantage. For the MYF5 gene, the C5084T and T5127A SNP genotypes were significantly associated with carcass traits of pigeons. Within those two SNPs, the BB genotype showed relatively higher trait association values than those of AA or AB genotypes. No significant association was observed between the KLF15 SNP genotypes and carcass traits. These results indicated that the MYF5 gene is a potential major gene affecting carcass traits in domestic pigeons. The BB genotype of the C5084T and T5127A SNPs could be a potential candidate genetic marker for marker-assisted selection in pigeon.

  15. Association of DGAT2 gene polymorphisms with carcass and meat quality traits in domestic pigeons (Columba livia).

    Science.gov (United States)

    Mao, H G; Dong, X Y; Cao, H Y; Xu, N Y; Yin, Z Z

    2018-04-01

    1. Diacylglycerol acyltransferase (DGAT) plays an important role in the synthesis of triacylglycerol, but its effects on meat quality and carcass composition in pigeons are unclear. In this study, single-nucleotide polymorphisms (SNPs) in the exons of the DGAT2 gene were identified and analysed by using DNA sequencing methods in 200 domestic pigeons (Columba livia). The associations between DGAT2 polymorphisms and carcass and meat quality traits were also analysed. 2. Sequencing results showed that 5 nucleotide mutations were detected in exons 3, 4, 5 and 6 of the DGAT2 gene. The analysis revealed three genotypes (AA, AB and BB) in G18398T and G22484C, in which the AA genotype and A allele had the highest frequency. 3. In the SNP of G18398T located in exon 5, individuals with genotype BB had significantly higher meat quality and lower abdominal fat content than those with AA or AB genotype. In the SNP of G22484C located in exon 6, the genotype AA showed highest carcass trait values, while the genotype BB represented better meat quality, compared to AA and AB genotypes. 4. The results imply that DGAT2 gene has a close relationship with carcass and meat quality traits in pigeons, and the SNPs of G18398T and G22484C can be used as genetic markers for marker-assisted breeding in pigeon.

  16. Clinicopathologic, gross necropsy, and histologic findings after intramuscular injection of carprofen in a pigeon (Columba livia) model.

    Science.gov (United States)

    Zollinger, Tawina J; Hoover, John P; Payton, Mark E; Schiller, Chris A

    2011-09-01

    To evaluate the pathologic effects of carprofen in a pigeon model (Columba livia), 52 young adult pigeons were used in a randomized control study design. Sixteen pigeons were randomly assigned to 1 of 3 treatment groups and received carprofen by intramuscular injection at dosages of either 2, 5, or 10 mg/kg once daily for 7 days. Four pigeons served as saline-injected controls. Four pigeons from each group and 1 control pigeon were randomly selected on days 2, 4, 6, and 8 to obtain blood samples and then were euthanatized and submitted for necropsy. Histologic lesions in pectoral muscle, liver, kidney, and digestive tract tissue samples were ranked in severity as 0, normal/not present; 1, minimal; 2, mild; 3, mild to moderate; 4, moderate; 5, moderate to marked; and 6, marked pathologic changes. Two-way analysis of variance (day x dose) and pairwise t tests revealed significant (P carprofen treatments. Gross lesions in carprofen-treated pigeons were pale injection sites (23/48 [47.9%]), mottled yellow livers (9/48 [18.8%]), and congestion of small intestines (7/48 [14.6%]). Liver, kidney, and muscle injection sites had significantly increased (P carprofen is associated with increased aspartate aminotransferase and alanine aminotransferase enzyme concentrations, gross lesions in muscle injection sites and liver, and histologic lesions in liver and muscle.

  17. Liquid oxygen (LO2) propellant conditioning concept testing

    Science.gov (United States)

    Perry, Gretchen L. E.; Orth, Michael S.; Mehta, Gopal K.

    1993-01-01

    Testing of a simplified LO2 propellant conditioning concept for future expendable launch vehicles is discussed. Four different concepts are being investigated: no-bleed, low-bleed, use of a recirculation line, and He bubbling. A full-scale test article, which is a facsimile of a propellant feed duct with an attached section to simulate heat input from an LO2 turbopump, is to be tested at the Cold Flow Facility of the Marshall Space Flight Center West Test Area. Work to date includes: design and fabrication of the test article, design of the test facility and initial fabrication, development of a test matrix and test procedures, initial predictions of test output, and heat leak calibration and heat exchanger tests on the test articles.

  18. Widefield fluorescence sectioning with HiLo microscopy.

    Science.gov (United States)

    Mertz, Jerome; Lim, Daryl; Chu, Kengyeh K; Bozinovic, Nenad; Ford, Timothy

    2009-01-01

    HiLo microscopy is a widefield fluorescence imaging technique that provides depth discrimination by combining two images, one with non-uniform illumination and one with uniform illumination. We discuss the theory of this technique and a variety of practical implementations in brain-tissue imaging and fluorescence endomicroscopy.

  19. Noliktavu vadības sistēmas (WMS) ieviešana un ieviešanas rezultātu analīze loģistikas uzņēmumā AS ,,Dominante Loģistikas Sistēma

    OpenAIRE

    Morozovs, Gļebs

    2010-01-01

    Darbā „Noliktavu vadības sistēmas (WMS) ieviešana un ieviešanas rezultātu analīze loģistikas uzņēmumā AS „Dominante Loģistikas Sistēma„ tiek pētīta noliktavu vadības sistēmas ievešanas ietekme uz loģistikas uzņēmumu. Darbā izpētīts loģistikas saturs un funkcionālās sfēra, aplūkoti noliktavu un transporta loģistika pamatprincipi un mijiedarbība, analizētas loģistikas attīstības tendences un loma Latvijas tautsaimniecība. Izpētīti noliktavu un transporta loģistikas instrumenti, raksturota infor...

  20. Otra vez hablando de lo que habla

    Directory of Open Access Journals (Sweden)

    García Calvo, Agustín

    2011-02-01

    Full Text Available Reconociendo la contradicción que se da entre la lengua DE que se habla y la lengua EN que se habla, se trata de hacer sentir al lector la inmensa complejidad de la máquina de la lengua, que nos pasa casi enteramente desapercibida. Para entender esto es preciso darse cuenta de que el artilugio de la lengua se encuentra en un nivel sub-conciente, común, que no pertenece a nadie. Hablamos así de bien gracias a que no nos damos cuenta de lo que hacemos cuando hablamos. Esto se ilustra negativamente con varios fenómenos lingüísticos bien conocidos: la pronunciación pedante de ciertas palabras, las alternancias “se me cayó” / ”me se cayó” y otras, etc., además de hacer ver lo inútil de empeñarse en pronunciar a conciencia los fonemas estraños de la lengua que uno aprende.

  1. Fast optically sectioned fluorescence HiLo endomicroscopy

    Science.gov (United States)

    Ford, Tim N.; Lim, Daryl; Mertz, Jerome

    2012-02-01

    We describe a nonscanning, fiber bundle endomicroscope that performs optically sectioned fluorescence imaging with fast frame rates and real-time processing. Our sectioning technique is based on HiLo imaging, wherein two widefield images are acquired under uniform and structured illumination and numerically processed to reject out-of-focus background. This work is an improvement upon an earlier demonstration of widefield optical sectioning through a flexible fiber bundle. The improved device features lateral and axial resolutions of 2.6 and 17 μm, respectively, a net frame rate of 9.5 Hz obtained by real-time image processing with a graphics processing unit (GPU) and significantly reduced motion artifacts obtained by the use of a double-shutter camera. We demonstrate the performance of our system with optically sectioned images and videos of a fluorescently labeled chorioallantoic membrane (CAM) in the developing G. gallus embryo. HiLo endomicroscopy is a candidate technique for low-cost, high-speed clinical optical biopsies.

  2. Visualidades y materialidades de lo digital: caminos desde la antropología

    Directory of Open Access Journals (Sweden)

    Elisenda Ardèvol

    2014-01-01

    Full Text Available En este artículo presentamos una reflexión sobre cómo estudiamos lo digital desde una perspectiva antropológica y exploramos cómo se han planteado cuestiones como la diversidad cultural, las desigualdades sociales y las posibilidades de cambio y transformación social vinculadas con las tecnologías digitales. Proponemos que es necesario abrir un debate sobre las conceptualizaciones de lo digital y cuáles son las categorías que utilizamos para describir los procesos de cambio y continuidad en lo cotidiano, así como el papel de las tecnologías en ellos. este planteamiento nos lleva a cuestionarnos cómo los etnógrafos y etnógrafas hemos explorado las complejas relaciones entre las prácticas locales, los tránsitos globales y las tecnologías digitales; para ello, abordamos algunos caminos que ha tomado el abordaje de los aspectos materiales y visuales de lo digital en la creación cultural y en los medios de comunicación y nos preguntamos sobre la manera en que incorporamos lo digital en nuestra propia práctica etnográfica y producción de conocimiento antropológico.

  3. LoRa scalability : a simulation model based on interference measurements

    OpenAIRE

    Haxhibeqiri, Jetmir; Van den Abeele, Floris; Moerman, Ingrid; Hoebeke, Jeroen

    2017-01-01

    LoRa is a long-range, low power, low bit rate and single-hop wireless communication technology. It is intended to be used in Internet of Things (IoT) applications involving battery-powered devices with low throughput requirements. A LoRaWAN network consists of multiple end nodes that communicate with one or more gateways. These gateways act like a transparent bridge towards a common network server. The amount of end devices and their throughput requirements will have an impact on the performa...

  4. El sentido de lo femenino: sobre la admiración y la diferencia sexual

    Directory of Open Access Journals (Sweden)

    Catherine Malabou

    2009-01-01

    Full Text Available En este artículo se exponen una serie de cuestiones que plantean el marco y la extensión de lo que se entiende por lo femenino, así como su papel en lo que respecta a la diferencia sexual y al género, desvinculándolo de las mujeres. A través de un recorrido por el pensamiento de distintos autores que han trabajado el concepto de lo femenino, tales como Levinas, Derrida, Heidegger e Irigaray, se analiza el concepto de admiración cartesiano como advenimiento del otro. Lo femenino reconoce además el cuerpo de la mujer y su múltiple sexualidad encarnada por sus múltiples labios, según la imagen de Irigaray, en su paso hacia una identidad metabólica y en tránsito.

  5. La intimidad y la experiencia en lo público

    Directory of Open Access Journals (Sweden)

    María Teresa Luna

    2007-05-01

    Full Text Available Esta investigación, de corte fenomenológico, se posiciona en los postulados de la fenomenología del mundo social desarrollada por Alfred Schütz; en este sentido se discute la categoría intimidad como experiencia subjetiva en la que se vivencia la configuración del yo y el tú, y en la que se producen y decantan significaciones esenciales para la relación con uno mismo o con una misma, y con los otros u otras, lo cual parece producir esquemas de actuación en lo público, entendido como el espacio físico y simbólico compartido con otros mediatos u otras mediatas. La información fue construida mediante entrevistas conversacionales en las que cuatro profesionales (tres mujeres y un hombre, vinculados a Organizaciones No Gubernamentales de la ciudad de Medellín con un fuerte trabajo en lo público, construyeron narrativas autobiográficas. La unidad de lectura de la información fue el relato –entendido como una historia con un principio, un desarrollo y un final–y el criterio de selección de relatos significativos fue el acontecimiento biográfico, entendido como un evento que produce un quiebre en la propia biografía, sea porque rompe algo o inaugura algo. Los acontecimientos seleccionados fueron aquellos que aportaban información pertinente para comprender la progresiva configuración de la experiencia íntima y su encadenamiento con una cierta forma de experienciar la actuación en lo público. Los resultados muestran que la intimidad es experiencia de posicionamiento en asuntos morales que están en la base de la actuación en lo público, así como también que en las relaciones íntimas –básicamente con los contemporáneos inmediatos como los amigos, las amigas y las parejas– se construyen experiencias como la confianza, el cuidado y el respeto, que son determinantes en la manera de transitar por la esfera pública.

  6. La intimidad y la experiencia en lo público

    Directory of Open Access Journals (Sweden)

    María Teresa Luna C.

    2007-01-01

    Full Text Available Esta investigación, de corte fenomenológico, se posiciona en los postulados de la fenomenología del mundo social desarrollada por Alfred Schütz; en este sentido se discute la categoría intimidad como experiencia subjetiva en la que se vivencia la configuración del yo y el tú, y en la que se producen y decantan significaciones esenciales para la relación con uno mismo o con una misma, y con los otros u otras, lo cual parece producir esquemas de actuación en lo público, entendido como el espacio físico y simbólico compartido con otros mediatos u otras mediatas. La información fue construida mediante entrevistas conversacionales en las que cuatro profesionales (tres mujeres y un hombre, vinculados a Organizaciones No Gubernamentales de la ciudad de Medellín con un fuerte trabajo en lo público, construyeron narrativas autobiográficas. La unidad de lectura de la información fue el relato –entendido como una historia con un principio, un desarrollo y un final–y el criterio de selección de relatos significativos fue el acontecimiento biográfico, entendido como un evento que produce un quiebre en la propia biografía, sea porque rompe algo o inaugura algo. Los acontecimientos seleccionados fueron aquellos que aportaban información pertinente para comprender la progresiva configuración de la experiencia íntima y su encadenamiento con una cierta forma de experienciar la actuación en lo público. Los resultados muestran que la intimidad es experiencia de posicionamiento en asuntos morales que están en la base de la actuación en lo público, así como también que en las relaciones íntimas –básicamente con los contemporáneos inmediatos como los amigos, las amigas y las parejas– se construyen experiencias como la confianza, el cuidado y el respeto, que son determinantes en la manera de transitar por la esfera pública.

  7. Enhancing LoRaWAN Security through a Lightweight and Authenticated Key Management Approach.

    Science.gov (United States)

    Sanchez-Iborra, Ramon; Sánchez-Gómez, Jesús; Pérez, Salvador; Fernández, Pedro J; Santa, José; Hernández-Ramos, José L; Skarmeta, Antonio F

    2018-06-05

    Luckily, new communication technologies and protocols are nowadays designed considering security issues. A clear example of this can be found in the Internet of Things (IoT) field, a quite recent area where communication technologies such as ZigBee or IPv6 over Low power Wireless Personal Area Networks (6LoWPAN) already include security features to guarantee authentication, confidentiality and integrity. More recent technologies are Low-Power Wide-Area Networks (LP-WAN), which also consider security, but present initial approaches that can be further improved. An example of this can be found in Long Range (LoRa) and its layer-two supporter LoRa Wide Area Network (LoRaWAN), which include a security scheme based on pre-shared cryptographic material lacking flexibility when a key update is necessary. Because of this, in this work, we evaluate the security vulnerabilities of LoRaWAN in the area of key management and propose different alternative schemes. Concretely, the application of an approach based on the recently specified Ephemeral Diffie⁻Hellman Over COSE (EDHOC) is found as a convenient solution, given its flexibility in the update of session keys, its low computational cost and the limited message exchanges needed. A comparative conceptual analysis considering the overhead of different security schemes for LoRaWAN is carried out in order to evaluate their benefits in the challenging area of LP-WAN.

  8. LoRa IoT -radion soveltuvuus käytettyjen työkoneiden tiedonsiirtoon

    OpenAIRE

    Hasu, Lassi

    2017-01-01

    Opinnäytetyön tarkoituksena oli tutkia LoRa-radiotekniikan soveltuvuutta lastinkäsittelylaitteiden tuottaman datan tiedonsiirtoon. LoRa on teollisen internetin sovelluksia varten kehitetty pitkän kantaman radiotekniikka. Tavoitteena oli löytää käyttötapauksia, joihin LoRa-tekniikka soveltuu etsittäessä kustannustehokasta radiotekniikkaa erityisesti käytettyihin lastinkäsittelylaitteisiin. Työn toimeksiantaja oli Cargotec Finland Oy:n Kalmar-liiketoimintayksikkö. Työn tutkimusmenetelmänä käyte...

  9. Chlamydia psittaci genotype B in a pigeon (Columba livia inhabiting a public place in San José, Costa Rica

    Directory of Open Access Journals (Sweden)

    G. Dolz

    2013-12-01

    Full Text Available Human chlamydiosis is a zoonotic disease of avian origin caused by Chlamydia psittaci. The highest infection rates have been detected in parrots (Psittacidae and pigeons (Columbiformes, the latter most frequently carry the genotypes B and E. These genotypes have been shown to also infect humans. Because pigeons (Columba livia cohabit with humans in urban areas, C. psittaci present in the dust from dry feces of infected pigeons may be transmitted by inhalation and represent a significant public health problem. Between 2012 and 2013 a total of 120 fecal samples were collected from pigeons at four public places (Plaza de la Cultura, Parque Morazán, Parque Central de Guadalupe, Plaza de las Garantías Sociales in San José, Costa Rica. A nested polymerase chain reaction (PCR was used to amplify a region of the outer membrane protein A gene of C. psittaci. Only one sample was positive in PCR and the positive sample was further subjected to sequencing and genotyping. Sequencing identified this sample as C. psittaci genotype B. This study is the first report to show the presence of this organism in pigeons of Costa Rica, and shows that the infected pigeons may represent a significant risk for humans who visit public places that are inhabited by pigeons.

  10. Chlamydia psittaci genotype B in a pigeon (Columba livia) inhabiting a public place in San José, Costa Rica

    Science.gov (United States)

    Dolz, G.; Solórzano-Morales, Á.; Angelova, L.; Tien, C.; Fonseca, L.; Bonilla, M.C.

    2013-01-01

    Human chlamydiosis is a zoonotic disease of avian origin caused by Chlamydia psittaci. The highest infection rates have been detected in parrots (Psittacidae) and pigeons (Columbiformes), the latter most frequently carry the genotypes B and E. These genotypes have been shown to also infect humans. Because pigeons (Columba livia) cohabit with humans in urban areas, C. psittaci present in the dust from dry feces of infected pigeons may be transmitted by inhalation and represent a significant public health problem. Between 2012 and 2013 a total of 120 fecal samples were collected from pigeons at four public places (Plaza de la Cultura, Parque Morazán, Parque Central de Guadalupe, Plaza de las Garantías Sociales) in San José, Costa Rica. A nested polymerase chain reaction (PCR) was used to amplify a region of the outer membrane protein A gene of C. psittaci. Only one sample was positive in PCR and the positive sample was further subjected to sequencing and genotyping. Sequencing identified this sample as C. psittaci genotype B. This study is the first report to show the presence of this organism in pigeons of Costa Rica, and shows that the infected pigeons may represent a significant risk for humans who visit public places that are inhabited by pigeons. PMID:26623327

  11. Chlamydia psittaci genotype B in a pigeon (Columba livia) inhabiting a public place in San José, Costa Rica.

    Science.gov (United States)

    Dolz, G; Solórzano-Morales, Á; Angelova, L; Tien, C; Fonseca, L; Bonilla, M C

    2013-01-01

    Human chlamydiosis is a zoonotic disease of avian origin caused by Chlamydia psittaci. The highest infection rates have been detected in parrots (Psittacidae) and pigeons (Columbiformes), the latter most frequently carry the genotypes B and E. These genotypes have been shown to also infect humans. Because pigeons (Columba livia) cohabit with humans in urban areas, C. psittaci present in the dust from dry feces of infected pigeons may be transmitted by inhalation and represent a significant public health problem. Between 2012 and 2013 a total of 120 fecal samples were collected from pigeons at four public places (Plaza de la Cultura, Parque Morazán, Parque Central de Guadalupe, Plaza de las Garantías Sociales) in San José, Costa Rica. A nested polymerase chain reaction (PCR) was used to amplify a region of the outer membrane protein A gene of C. psittaci. Only one sample was positive in PCR and the positive sample was further subjected to sequencing and genotyping. Sequencing identified this sample as C. psittaci genotype B. This study is the first report to show the presence of this organism in pigeons of Costa Rica, and shows that the infected pigeons may represent a significant risk for humans who visit public places that are inhabited by pigeons.

  12. La familia: Desde lo tradicional a lo discutible

    Directory of Open Access Journals (Sweden)

    María Elena Benítez Pérez

    2017-12-01

    Full Text Available Una de las pocas generalizaciones ampliamente aceptadas en las ciencias sociales es que la familia es una institución que se encuentra en todas las sociedades humanas. Esta sintetiza la congruencia entre los cambios económicos, políticos, sociales, culturales y demográficos que tienen lugar en los países. Su desarrollo no es anárquico, sino que responde a las transformaciones experimentadas por la sociedad a la que representa. Por tanto, aunque sigue siendo la institución van surgiendo nuevas modalidades de relaciones entre padres e hijos, entre hombres y mujeres, entre jóvenes y viejos que conducen, sin duda, a otros modelos familiares. El presente artículo tiene como objetivo debatir acerca del concepto de familia tradicional –pareja heterosexual, con hijos y con roles bien definidos–, frente a otras estructuras familiares contemporáneas que alteran los parámetros con los que se entendía la vida familiar. Para ello, se propone transitar por algunas definiciones que permiten reflexionar en torno a los principales cambios observados en la sociedad y su reflejo en la perspectiva analítica de la familia como institución, en particular, lo referido al matrimonio y la cohabitación, la procreación y la filiación intergeneracional.

  13. LO APEIRON: VOZ DE GRECIA CLÁSICA EN LA CIENCIA CONTEMPORÁNEA

    Directory of Open Access Journals (Sweden)

    ROMÁN CASTAÑEDA-SEPULVEDA

    2012-07-01

    Full Text Available Se analiza el paralelo entre lo apeiron, designado por Anaximandro como arche cósmico y las concepciones sobre el universo derivadas de los desarrollos científicos, particularmente del siglo XX. Este análisis sugiere la vigencia del pensamiento de Anaximandro, quien lo promulgó hace 26 siglos.

  14. Enhancing LoRaWAN Security through a Lightweight and Authenticated Key Management Approach

    Directory of Open Access Journals (Sweden)

    Ramon Sanchez-Iborra

    2018-06-01

    Full Text Available Luckily, new communication technologies and protocols are nowadays designed considering security issues. A clear example of this can be found in the Internet of Things (IoT field, a quite recent area where communication technologies such as ZigBee or IPv6 over Low power Wireless Personal Area Networks (6LoWPAN already include security features to guarantee authentication, confidentiality and integrity. More recent technologies are Low-Power Wide-Area Networks (LP-WAN, which also consider security, but present initial approaches that can be further improved. An example of this can be found in Long Range (LoRa and its layer-two supporter LoRa Wide Area Network (LoRaWAN, which include a security scheme based on pre-shared cryptographic material lacking flexibility when a key update is necessary. Because of this, in this work, we evaluate the security vulnerabilities of LoRaWAN in the area of key management and propose different alternative schemes. Concretely, the application of an approach based on the recently specified Ephemeral Diffie–Hellman Over COSE (EDHOC is found as a convenient solution, given its flexibility in the update of session keys, its low computational cost and the limited message exchanges needed. A comparative conceptual analysis considering the overhead of different security schemes for LoRaWAN is carried out in order to evaluate their benefits in the challenging area of LP-WAN.

  15. LoFASM: A Low Frequency All Sky Monitor for Radio Transients and Student Training

    Science.gov (United States)

    2015-09-02

    SECURITY CLASSIFICATION OF: The Low-Frequency All- Sky Monitor (LoFASM) is an innovative new radio astronomy observatory. Designed and built by...Feb-2015 Approved for Public Release; Distribution Unlimited Final Report: LoFASM: A Low Frequency All Sky Monitor for Radio Transients and Student...reviewed journals: Number of Papers published in non peer-reviewed journals: Final Report: LoFASM: A Low Frequency All Sky Monitor for Radio Transients and

  16. Lo siniestro del enigma.

    Directory of Open Access Journals (Sweden)

    Victoria Eugenia Diaz.

    1999-11-01

    Full Text Available En "El nacimiento de la filosofía griega", Giorgio Colli nos muestra una faceta tenebrosa del enigma. El dios Apolo, de naturaleza ilimitada, insondable, caprichosa, plantea al hombre enigmas que lo enfrentan con el sufrimiento y con la muerte. Allí, Edipo se confronta con enigmas enviados por el dios en los que se pone en juego su propia existencia. Tiempo después, en el transcurrir del siglo XX, reaparece una nueva forma de este dios arbitrario y arrogante: el desaparecedor de personas, ese inmoderado que impone moderación, borra con su acto un cuerpo, una imagen, un nombre, y formula un nuevo enigma siniestro que enfrenta otra vez al hombre con el dolor y con la muerte.

  17. Interband optical absorption in the Wannier-Stark ladder under the electron-LO-phonon resonance condition

    International Nuclear Information System (INIS)

    Govorov, A.O.

    1993-08-01

    Interband optical absorption in the Wannier-Stark ladder in the presence of the electron-LO-phonon resonance is investigated theoretically. The electron-LO-phonon resonance occurs when the energy spacing between adjacent Stark-ladder levels coincides with the LO-phonon energy. We propose a model describing the polaron effect in a superlattice. Calculations show that the absorption line shape is strongly modified due to the polaron effect under the electron-LO-phonon resonance condition. We consider optical phenomena in a normal magnetic field that leads to enhancement of polaron effects. (author). 17 refs, 5 figs

  18. Keystone Life Orientation (LO) teachers: implications for educational ...

    African Journals Online (AJOL)

    have integrity, be trustworthy, resolve conflict and make good use of internal and ... “disadvantages of social context and how these affect learning and ... understanding of keystone LO teachers (Merriam, 1998), what is more it is descriptive, ex ...

  19. EDUCACIÓN SEXUAL MÁS ALLÁ DE LO BIOLÓGICO

    Directory of Open Access Journals (Sweden)

    María José Rivera Otero

    2016-10-01

    Full Text Available Tradicionalmente la educación sexual ha tenido un enfoque reduccionista, orientado hacia lo informativo-preventivo y bajo unaperspectiva conceptual biologizante, y se ha dejado de lado los aspectos sociales, culturales, valóricos y de sexo-género. Para superaresta visión, se propuso como objetivo identificar y caracterizar los modelos estudiantiles después de una intervención didáctica enfocada en la reflexión, el análisis y la toma de decisiones en casos de aprendizaje que abordaban el contenido de infecciones detransmisión sexual (its. A partir de los resultados se encontraron tres modelos: biológico, afectivo y social, lo que demuestra la necesidad de abordar la educación sexual de manera integral y considerar la noción de género como eje fundamental para discutir en torno a los conocimientos, actitudes y prácticas relativas a lo que significa ser hombre o ser mujer en la sociedad actual.

  20. The CEA−/lo colorectal cancer cell population harbors cancer stem cells and metastatic cells

    Science.gov (United States)

    Zhang, Bo; Mu, Lei; Huang, Kaiyu; Zhao, Hui; Ma, Chensen; Li, Xiaolan; Tao, Deding; Gong, Jianping; Qin, Jichao

    2016-01-01

    Serum carcinoembryonic antigen (CEA) is the most commonly used tumor marker in a variety of cancers including colorectal cancer (CRC) for tumor diagnosis and monitoring. Recent studies have shown that colonic crypt cells expressing little or no CEA may enrich for stem cells. Numerous studies have clearly shown that there exist CRC patients with normal serum CEA levels during tumor progression or even tumor relapse, although CEA itself is considered to promote metastasis and block cell differentiation. These seemingly contradictory observations prompted us to investigate, herein, the biological properties as well as tumorigenic and metastatic capacity of CRC cells that express high (CEA+) versus low CEA (CEA−/lo) levels of CEA. Our findings show that the abundance of CEA−/lo cells correlate with poor differentiation and poor prognosis, and moreover, CEA−/lo cells form more spheres in vitro, generate more tumors and exhibit a higher potential in developing liver and lung metastases than corresponding CEA+ cells. Applying RNAi-mediated approach, we found that IGF1R mediated tumorigenic and capacity of CEA−/lo cells but did not mediate those of CEA+ cells. Notably, our data demonstrated that CEA molecule was capable of protecting CEA−/lo cells from anoikis, implying that CEA+ cells, although themselves possessing less tumorigenic and metastatic capacity, may promote metastasis of CEA−/lo cells via secreting CEA molecule. Our observations suggest that, besides targeting CEA molecule, CEA−/lo cells may represent a critical source of tumor progression and metastasis, and should therefore be the target of future therapies. PMID:27813496

  1. Lo sano y lo enfermo. El consumo de vinos y los problemas sociales del alcoholismo en el Montevideo del novecientos

    Directory of Open Access Journals (Sweden)

    Daniela Bouret

    2013-04-01

    Full Text Available En Uruguay existe un creciente consumo de drogas cuyas consecuencias negativas son visibles en los siniestros laborales, de tránsito y en el recrudecimiento de la violencia doméstica y delictiva. Este tema es considerado asunto de Estado y se entiende el alcohol como la primera droga de inicio (incluye la ingesta de vino. Nos interesa analizar el vínculo entre medicina y moral que, desde el Novecientos, ha pautado la relación del consumo de alcohol entre lo «saludable» o lo «excesivo». En esa atmósfera de creciente higienismo se desarrolló, sin embargo, una industria vitivinícola con éxito. En este artículo buscamos desnaturalizar los discursos médicos como construcción histórica y sus consecuencias en el cuerpo de los alcohólicos en espacios de reclusión (hospitales y cárceles y en la sociedad del Montevideo en el Novecientos.

  2. Corporeidad y significado: naturaleza dual de lo físico

    OpenAIRE

    Arranz Rodrigo, Marceliano

    2015-01-01

    La información es una dimensión de lo real que, a pesar de no tener natu-raleza física, solo existe apoyada en una base física. Y su presencia en los objetos, eventos y procesos que constituyen nuestro entorno vital humano, es lo que permite que el mundo sea inteligible. Sin información no serían posibles las definiciones, ni el pensamiento, ni el lenguaje, ni la ciencia. La importancia de la información está creciendo de manera expo-nencial en nuestros días. Aclarar su estatuto ...

  3. El urbanismo contra lo urbano. La ciudad y la vida urbana en Henri Lefebvre

    Directory of Open Access Journals (Sweden)

    Manuel Delgado Ruiz

    2018-01-01

    Full Text Available Henri Lefebvre coloca en el eje de su teoría sobre la vida urbana la oposición entre el espacio vivido por quienes lo usan o sueñan y el espacio abstracto que creen organizar los tecnócratas de la ciudad, que raramente reconocen hasta qué punto su “creatividad” está sometida a intereses privados o institucionales. Tras ese espacio hipotético sobre el que urbanistas y arquitectos trabajan no hay otra cosa que mera ideología, es decir, fantasma que recubre y disfraza las relaciones sociales reales de producción. Frente -o de espaldas- a ese orden espacial meramente teórico de los “especialistas”, lo que las ciudades conocen es la actividad constante o inminente de lo urbano, entendido como apoteosis y exacerbación de lo social, dinamismo siempre activado de acontecimientos y quehaceres sobre el que los “expertos” aplican planes y proyectos, pero del que no saben en realidad nada, acaso por lo cual pugnan por anularlo.

  4. Dephasing of LO-phonon-plasmon hybrid modes in n-type GaAs

    Science.gov (United States)

    Vallée, F.; Ganikhanov, F.; Bogani, F.

    1997-11-01

    The relaxation dynamics of coherent phononlike LO-phonon-plasmon hybrid modes is investigated in n-doped GaAs using an infrared time-resolved coherent anti-Stokes Raman scattering technique. Measurements performed for different crystal temperatures in the range 10-300 K as a function of the electron density injected by doping show a large reduction of the hybrid mode dephasing time compared to the bare LO-phonon one for densities larger than 1016 cm-3. The results are interpreted in terms of coherent decay of the LO-phonon-plasmon mixed mode in the weak-coupling regime and yield information on the plasmon and electron relaxation. The estimated average electron momentum relaxation times are smaller than those deduced from Hall mobility measurements, as expected from our theoretical model.

  5. Performance Evaluation of LoRa Considering Scenario Conditions.

    Science.gov (United States)

    Sanchez-Iborra, Ramon; Sanchez-Gomez, Jesus; Ballesta-Viñas, Juan; Cano, Maria-Dolores; Skarmeta, Antonio F

    2018-03-03

    New verticals within the Internet of Things (IoT) paradigm such as smart cities, smart farming, or goods monitoring, among many others, are demanding strong requirements to the Radio Access Network (RAN) in terms of coverage, end-node's power consumption, and scalability. The technologies employed so far to provide IoT scenarios with connectivity, e.g., wireless sensor network and cellular technologies, are not able to simultaneously cope with these three requirements. Thus, a novel solution known as Low Power - Wide Area Network (LP-WAN) has emerged as a promising alternative to provide with low-cost and low-power-consumption connectivity to end-nodes spread in a wide area. Concretely, the Long-Range Wide Area Network (LoRaWAN) technology is one of the LP-WAN platforms that is receiving greater attention from both the industry and the academia. For that reason, in this work, a comprehensive performance evaluation of LoRaWAN under different environmental conditions is presented. The results are obtained from three real scenarios, namely, urban, suburban, and rural, considering both dynamic and static conditions, hence a discussion about the most proper LoRaWAN physical-layer configuration for each scenario is provided. Besides, a theoretical coverage study is also conducted by the use of a radio planning tool considering topographic maps and a precise propagation model. From the attained results, it can be concluded that it is necessary to evaluate the propagation conditions of the deployment scenario prior to the system implantation in order to reach a compromise between the robustness of the network and the transmission data-rate.

  6. Identification of a Transcriptionally Forward α Gene and Two υ Genes within the Pigeon (Columba livia) IgH Gene Locus.

    Science.gov (United States)

    Huang, Tian; Wang, Xifeng; Si, Run; Chi, Hao; Han, Binyue; Han, Haitang; Cao, Gengsheng; Zhao, Yaofeng

    2018-06-01

    Compared with mammals, the bird Ig genetic system relies on gene conversion to create an Ab repertoire, with inversion of the IgA-encoding gene and very few cases of Ig subclass diversification. Although gene conversion has been studied intensively, class-switch recombination, a mechanism by which the IgH C region is exchanged, has rarely been investigated in birds. In this study, based on the published genome of pigeon ( Columba livia ) and high-throughput transcriptome sequencing of immune-related tissues, we identified a transcriptionally forward α gene and found that the pigeon IgH gene locus is arranged as μ-α-υ1-υ2. In this article, we show that both DNA deletion and inversion may result from IgA and IgY class switching, and similar junction patterns were observed for both types of class-switch recombination. We also identified two subclasses of υ genes in pigeon, which share low sequence identity. Phylogenetic analysis suggests that divergence of the two pigeon υ genes occurred during the early stage of bird evolution. The data obtained in this study provide new insight into class-switch recombination and Ig gene evolution in birds. Copyright © 2018 by The American Association of Immunologists, Inc.

  7. A Feasibility Assessment of 6LoWPAN for Secure Communications in the U.S. Army

    Science.gov (United States)

    2016-06-01

    bandwidth. 14. SUBJECT TERMS LoWPAN, 6LoWPAN, 802.15.4, energy , security, feasibility, wireless , networks, range, duration, wireless security...47 Figure 16. Total Energy Expended per Message for Various Data Rates and Transmission Powers...maximize transmission speeds and data throughput pay little concern to energy . This thesis presents a model that assesses 6LoWPAN in both a potential

  8. Prevalence and risk factors for Campylobacter spp., Salmonella spp., Coxiella burnetii, and Newcastle disease virus in feral pigeons (Columba livia) in public areas of Montreal, Canada

    Science.gov (United States)

    Gabriele-Rivet, Vanessa; Fairbrother, Julie-Hélène; Tremblay, Donald; Harel, Josée; Côté, Nathalie; Arsenault, Julie

    2016-01-01

    Feral pigeons (Columbia livia) can harbor a range of zoonotic pathogens. A transversal study was undertaken to estimate the prevalence of feral pigeons infected by various pathogens in public areas in Montreal, Quebec. Cloacal swabs from captured birds were cultured for Salmonella spp. and Campylobacter spp. and tested by real-time polymerase chain reaction (RT-PCR) for the detection of Coxiella burnetii. An oropharyngeal swab was also submitted to real-time reverse-transcription polymerase chain reaction (RRT-PCR) for the detection of Newcastle disease virus. Among the 187 pigeons tested from 10 public areas, 9.1% (95% CI: 3.0 to 15.2) were positive for Campylobacter spp. with all strains identified as Campylobacter jejuni. The Campylobacter status of birds was not associated with individual characteristics of birds, with the exception of body score. None of the pigeons tested positive for the other pathogens. Direct or indirect contacts with feral pigeons may constitute a potential risk for Campylobacter infection in humans. PMID:26733736

  9. Ülo Sooster, muna ja Hrushtshov / Ants Juske

    Index Scriptorium Estoniae

    Juske, Ants, 1956-2016

    2006-01-01

    Ülo Soosteri ja teiste Moskva avangardistide lootusest pääseda laiema publiku ette ja Hrushtshovi külaskäigul fiaskoga lõppenud näitusest Moskva Maneezhis 1962. aastal. Illustratsiooniks Ü. Soosteri "Valge muna". Õli, pasta, 1968-1970. Tartu Kunstimuuseum

  10. "Cy Twombly: Intérprete de dos mundos" [Un artista entre Estados Unidos y Europa, entre lo clásico y lo contemporáneo

    OpenAIRE

    Gras Cruz, Irene

    2017-01-01

    Esta tesis “Cy Twombly: Intérprete de dos mundos” [Un artista entre Estados Unidos y Europa, entre lo clásico y lo contemporáneo] pretende dar a conocer al artista norteamericano Cy Twombly (1928-2011) en nuestro país y destacar la importancia que tiene dentro del panorama artístico como figura clave en un momento de efervescencia —artística y creativa— americana en el que a diferencia de sus coetáneos prefirió emigrar a Europa, concretamente a Italia. Mientras todos se trasladaban a la nueva...

  11. The LoTrach system: its role in the prevention of ventilator-associated pneumonia.

    Science.gov (United States)

    Fletcher, Andrew J W; Ruffell, Alison J; Young, Peter J

    2008-01-01

    To discuss the development of the LoTrach system in light of current evidence around the prevention of ventilator-associated pneumonia (VAP) and its practical application in the intensive care setting. VAP causes substantial morbidity and mortality in ventilated patients in the Intensive Care Unit (ICU), increases length of stay in ICU and is extremely costly. Strategies are needed to reduce the risk of VAP. We examine the need for an endotracheal tube (ETT) specifically designed for the critically-ill patient, the development of the LoTrach system from conception to production, and the role of the various components of the system in preventing VAP. Early issues in implementing this revolutionary equipment into ICU are explored and three case studies highlight advantages of this system. The LoTrach system has been designed to facilitate the provision of a number of evidence-based interventions that have been shown to reduce VAP. Pulmonary aspiration is ubiquitous with conventional cuffs but prevented by the cuff of the LoTrach system when held at a constant and safe pressure against the tracheal wall with a cuff pressure controller. Other aspects incorporated in the ETT are aimed at clearing the secretions from the subglottic space, preventing tube occlusion and accidental extubation, and avoiding damage to the airway. In this way the LoTrach system employs a multifactorial approach to the prevention of VAP and the cost savings from LoTrach rather than a standard ETT will be considerable because of an average 3 day reduction in ICU length of stay related to this. It thus has the potential to be a very useful tool in the ICU setting in the prevention of VAP.

  12. Presencia de parásitos y enterobacterias en palomas ferales (Columba livia en áreas urbanas en Envigado, Colombia / Presence of parasites and enterobacteria in feral pigeons (Columba livia in urban areas of Envigado, Colombia

    Directory of Open Access Journals (Sweden)

    Janeth Pérez-García

    2015-10-01

    Full Text Available Resumen Objetivo: diagnosticar la presencia de parásitos y enterobacterias de importancia en Salud Pública en poblaciones ferales de Columba livia en zonas urbanas del municipio de Envigado, Colombia. Metodología: Estudio descriptivo transversal prospectivo con cuarenta palomas en seis lugares diferentes. Se evaluó plumaje para determinar ectoparásitos, hisopado coanal y cloacal, y muestra de sangre de la vena axilar. Se realizó examen directo con solución salina y yodada; técnica de flotación y tinción de Ziehl-Neelsen. El diagnóstico de hemoparásitos se efectuó mediante método de gota gruesa, coloración de Wright y tinción Hemacolor®. Se utilizó API 20e® para Enterobacterias. Se realizó estadística descriptiva y análisis de correlación entre hemoparásitos y ectoparásitos. Resultados: Escherichia coli (95%, Haemoproteus spp. (73%, Columbicola columbae (64%, ooquistes compatibles con Eimeria spp. (55%, Pseudolynchia canariensis (52%, Trichomona spp. (40%, Capillaria spp. (28%, Menopon gallinae (24%, Ascaridia spp. (8%, y un caso de Enterobacter cloacae. Se identificó la presencia de Ornithonyssus bursa en nidos de algunas de las aves muestreadas. Discusión: Aunque se han presentado reportes de casos eventuales de ellos en personas dentro de la revisión de literatura, los microorganismos aislados tienen un bajo riesgo de transmisión en humanos; sin embargo pueden convertirse en un problema de salud pública veterinaria al ser potenciales fuentes de infección a la fauna silvestre urbana con quienes comparten albergue, fuentes de agua y alimento. Conclusión: El mayor porcentaje fue ooquistes compatibles con Eimeria spp (55% y enterobacterias como E. coli (95%. Ornithonyssus bursa en las palomeras evidencia la presencia de un patógeno potencialmente zoonótico, causante de lesiones dérmicas en humanos./ Abstract Objective: to determine the presence of parasites and enterobacteria that are relevant to public health

  13. Patrimonio cultural: lo intangible se hace tangible

    Directory of Open Access Journals (Sweden)

    William Heredia Orjuela

    2004-11-01

    Full Text Available Se presentan tres reflexiones a manera de ensayo, elaboradas por estudiantes de vii semestre de la Facultad de Administración de Empresas Turísticas y Hoteleras. El tema central que engloba los escritos es el de la responsabilidad frente al patrimonio cultural, su valoración y su relación con el turismo. En el ensayo La protección del patrimonio cultural como reflejo del ser humano, la estudiante cecilia hinosTrosa hace un llamado de atención frente al problema del tráfico ilícito de bienes que conlleva la pérdida de testimonios de la cultura humana. El escrito de la estudiante mariel cecilia hernández destaca las bondades de recuperar las tradiciones y de cómo éstas se pueden difundir a través del turismo. Por último, el estudiante William heredia hace una reflexión sobre la tangibilidad de lo intangible, en el ensayo Patrimonio Cultural: lo tangible se hace intangible, donde destaca la declaratoria del Carnaval de Barranquilla como patrimonio oral e intangible de la humanidad.

  14. El momento de lo vivo: informe del Coloquio de Cerisy

    OpenAIRE

    Baron , Christine

    2016-01-01

    International audience; El coloquio El momento de lo vivo, codirigido por Fréderic Worms y Arnaud François, que tuvo lugar en Cerisy del 16 al 23 de agosto de 2012, reunió a filósofos y a científicos; biólogos, médicos, físicos, especialistas en literatura, un historiador, un especialista en ecología y un artista dedicado al trabajo «en vivo» y al que se podría vincular con el bio-arte se concertaron para reflexionar no sobre el concepto de la vida sino sobre lo que ―bajo diversos aspectos― t...

  15. The Influence of Migration on Population Ageing in the Cres-Lošinj Archipelago

    Directory of Open Access Journals (Sweden)

    Sonja Podgorelec

    1999-12-01

    Full Text Available Demographic research in regard to the islands of Cres and Lošinj belongs in the domain of small population studies. Throughout history, and especially after World War II, the islands experienced very strong emigration and later immigration processes. After fifty or more years of continual emigration, immigration began on the island of Lošinj in the 1960s, and on Cres in the 1970s. This reversal from strong depopulation to a significant increase in the size of the population, if the islands are examined as a whole, reveals certain demographic particularities in comparison with other Croatian islands. The long-term reduction of the birth rate and prolonged emigration from settlements in the interior of Cres and from all the islands of the Lošinj archipelago has been the cause of many elderly, single-person and abandoned households. All the analytical indicators pertaining to the age structure are above the threshold which marks the beginning of population ageing. The average age on all the islands has for over thirty years been well above 30, whereas in the Lošinj archipelago it has been above the reproductive age – i.e. about 50. The age coefficient varies between 14.02 for Lošinj and 49.22 for Ilovik. The island of Lošinj itself has the youngest population, and hence the lowest indicators of ageing. The burden on the working-age contingent on each island has changed at a different rate and in a different direction during the last three inter-census periods. The co-efficient of dependency of the young is increasing on all the islands, while the co-efficient of dependency of the elderly age groups is falling on Lošinj, Ilovik, Unije and Cres. The reduction of the birth rate and the negative migration balance caused by high emigration of mainly young, unmarried males has caused a seks ratio imbalance in favour of females. The general co-efficient of females, according to the 1991 census was between 105.7 on Lošinj and 145.5 on Unije. The

  16. Surface dependent behaviour of CdS LO-phonon mode

    International Nuclear Information System (INIS)

    Molina-Contreras, J R; Medina-Gutierrez, C; Frausto-Reyes, C; Trejo-Vazquez, R; Villalobos-Pina, F J; Romo-Luevano, G; Calixto, S

    2007-01-01

    In this paper, we develop a sensitive optical method to monitor the surface roughness in the investigation of surfaces. By applying this method to measure the RMS surface roughness of various surfaces, we found RMS values which are comparable to those obtained by atomic force microscopy measurements. In addition, we present a simple empirical model to calculate the RMS surface roughness which shows very good agreement with the surface roughness measurements taken by the method reported in this paper. Finally, the application of our method to the study of the LO-phonon mode of CdS suggests that its intensity is dominated by the surface roughness. This roughness dependent behaviour of the CdS LO-phonon mode is experimentally confirmed by using an excitation wavelength near its E 0 transition

  17. G‐LoSA: An efficient computational tool for local structure‐centric biological studies and drug design

    Science.gov (United States)

    2016-01-01

    Abstract Molecular recognition by protein mostly occurs in a local region on the protein surface. Thus, an efficient computational method for accurate characterization of protein local structural conservation is necessary to better understand biology and drug design. We present a novel local structure alignment tool, G‐LoSA. G‐LoSA aligns protein local structures in a sequence order independent way and provides a GA‐score, a chemical feature‐based and size‐independent structure similarity score. Our benchmark validation shows the robust performance of G‐LoSA to the local structures of diverse sizes and characteristics, demonstrating its universal applicability to local structure‐centric comparative biology studies. In particular, G‐LoSA is highly effective in detecting conserved local regions on the entire surface of a given protein. In addition, the applications of G‐LoSA to identifying template ligands and predicting ligand and protein binding sites illustrate its strong potential for computer‐aided drug design. We hope that G‐LoSA can be a useful computational method for exploring interesting biological problems through large‐scale comparison of protein local structures and facilitating drug discovery research and development. G‐LoSA is freely available to academic users at http://im.compbio.ku.edu/GLoSA/. PMID:26813336

  18. G-LoSA: An efficient computational tool for local structure-centric biological studies and drug design.

    Science.gov (United States)

    Lee, Hui Sun; Im, Wonpil

    2016-04-01

    Molecular recognition by protein mostly occurs in a local region on the protein surface. Thus, an efficient computational method for accurate characterization of protein local structural conservation is necessary to better understand biology and drug design. We present a novel local structure alignment tool, G-LoSA. G-LoSA aligns protein local structures in a sequence order independent way and provides a GA-score, a chemical feature-based and size-independent structure similarity score. Our benchmark validation shows the robust performance of G-LoSA to the local structures of diverse sizes and characteristics, demonstrating its universal applicability to local structure-centric comparative biology studies. In particular, G-LoSA is highly effective in detecting conserved local regions on the entire surface of a given protein. In addition, the applications of G-LoSA to identifying template ligands and predicting ligand and protein binding sites illustrate its strong potential for computer-aided drug design. We hope that G-LoSA can be a useful computational method for exploring interesting biological problems through large-scale comparison of protein local structures and facilitating drug discovery research and development. G-LoSA is freely available to academic users at http://im.compbio.ku.edu/GLoSA/. © 2016 The Protein Society.

  19. Polarization dependent behavior of CdS around the first and second LO-phonon modes

    International Nuclear Information System (INIS)

    Frausto-Reyes, C.; Molina-Contreras, J.R.; Lopez-Alvarez, Y.F.; Medel-Ruiz, C.I.; Perez Ladron de Guevara, H.; Ortiz-Morales, M.

    2010-01-01

    The present work report studies on resonant Raman experimental line shape for CdS around the first and second LO-phonon modes. The application of our method to the study of LO-phonon modes of CdS suggests that the scattered intensity is dominated by the surface and dependent on polarization. Results showed that the Raman spectra for CdS, roughly fall into three groups: a broad line-wing with apparent maxima around 194 cm -1 in the range of 140 and 240 cm -1 which can be ascribed to overtone scattering from acoustic phonons; a band near the 1LO phonon mode which can be attributed to a combination of one-phonon scattering and peak acoustic phonon and finally, a band near the 2LO phonon mode which can be attributed to a combination of two-phonon scattering and peak acoustic phonon.

  20. Photocurrents in retinal rods of pigeons (Columba livia): kinetics and spectral sensitivity.

    Science.gov (United States)

    Palacios, A G; Goldsmith, T H

    1993-01-01

    1. Membrane photocurrents were recorded from outer segments of isolated retinal rods of pigeons (Columba livia), the first such measurements on the photoreceptors of a bird. The amplitude of the response to 20 ms flashes of narrow wavelength bands of light increases linearly with intensity at low photon fluxes and saturates at higher intensities. The maximum (saturating) photocurrent observed in forty-nine rod cells was 50 pA. Larger responses with less variability in the intensity for half-maximal responses were observed when the physiological saline contained 20 mM bicarbonate (in addition to Hepes buffer). 2. The dependence of peak amplitude on intensity is well fitted by an exponential function; it is usually less well fitted by the Michaelis-Menten (Naka-Rushton) equation. 3. In the presence of bicarbonate, the average sensitivity of pigeon rods to dim flashes was 0.56 pA photon-1 microns -2. The effective collecting area per photon was 1.8 microns 2. About 83 +/- 26 (mean +/- S.D.) photoisomerizations were required for a half-saturating response. 4. The response kinetics of rods to dim flashes can be reasonably well described by a series of four to five either Poisson or independent filters. The time to peak, measured from the mid-point of a 20 ms flash, was 319 +/- 83 ms (mean +/- S.D.). The integration time of the response was 851 +/- 86 ms (mean +/- S.D.) with bicarbonate present and 572 +/- 126 ms in the absence of bicarbonate. The responses of pigeon rods appear to be slower than those of mammals at the same temperature. The fraction of current suppressed by a single photoisomerization is smaller in pigeon than in mammalian rods by a factor of at least two. 5. The spectral sensitivity function was measured between 680 and 330 nm. The maximum at about 505 nm (range 497-508 nm) corresponds to the alpha-band of a vertebrate rhodopsin and agrees with previous behavioural measurements of scotopic sensitivity of pigeons as well as the absorption spectrum of

  1. Experimental infection of broiler chicks with Salmonella Typhimurium from pigeon (Columba livia

    Directory of Open Access Journals (Sweden)

    Átilla Holanda de Albuquerque

    2016-08-01

    Full Text Available Several cases of animal and human salmonellosis caused by the Salmonella serotype Typhimurium have been reported. In animals, subclinical infection favors pathogen dissemination through feces. In this context, the domestic pigeon (Columba livia with an asymptomatic condition may play an important role in the transmission of salmonellosis, through the elimination of contaminated feces in commercial aviaries or in poultry feed facilities, causing economic losses to the poultry industry and presenting a risk to public health. This study aimed to evaluate the mortality, clinical signs and the presence of Salmonella Typhimurium in the feces and organs of chicks previously inoculated with bacteria isolated from a pigeon. One-day-old chicks were distributed in two experimental groups (G1 and G2 of 32 birds each, and a control group of six birds. Two inocula of 0.4 and 0.7 mL with 105 and 106 colony forming units were used in G1 and G2 birds, respectively. At 1, 4, 7 and 14 days post-inoculation (dpi fecal samples were pooled from each cage and individual cloacal swabs were collected. At 14 dpi, all chicks were euthanized and samples were collected from the liver, spleen, lung, cecum and intestine for microbiological analysis. Mortality was only observed among G2 birds (6.25%. Most birds presented clinical signs of diarrhea at 4 dpi and no symptom as observed at 14 dpi. The results from cloacal swabs demonstrated bacterial elimination in 68.8% and 53.1% of G2 and G1 birds, respectively at 1 dpi. Additionally, fecal samples had elevated bacterial shedding in all four periods of observation , with a higher excretion at 4 dpi (62.5% for both groups. Among G2 birds, 74.2% were positive for the pathogen in the intestine; G1 birds presented the lowest rate of lung infection (29%, and both groups had more than 50% positivity for liver and caeca. The results revealed that infected chicks with a Salmonella Typhimurium strains isolated from pigeons may host the

  2. Performance Evaluation of LoRa Considering Scenario Conditions

    Directory of Open Access Journals (Sweden)

    Ramon Sanchez-Iborra

    2018-03-01

    Full Text Available New verticals within the Internet of Things (IoT paradigm such as smart cities, smart farming, or goods monitoring, among many others, are demanding strong requirements to the Radio Access Network (RAN in terms of coverage, end-node’s power consumption, and scalability. The technologies employed so far to provide IoT scenarios with connectivity, e.g., wireless sensor network and cellular technologies, are not able to simultaneously cope with these three requirements. Thus, a novel solution known as Low Power - Wide Area Network (LP-WAN has emerged as a promising alternative to provide with low-cost and low-power-consumption connectivity to end-nodes spread in a wide area. Concretely, the Long-Range Wide Area Network (LoRaWAN technology is one of the LP-WAN platforms that is receiving greater attention from both the industry and the academia. For that reason, in this work, a comprehensive performance evaluation of LoRaWAN under different environmental conditions is presented. The results are obtained from three real scenarios, namely, urban, suburban, and rural, considering both dynamic and static conditions, hence a discussion about the most proper LoRaWAN physical-layer configuration for each scenario is provided. Besides, a theoretical coverage study is also conducted by the use of a radio planning tool considering topographic maps and a precise propagation model. From the attained results, it can be concluded that it is necessary to evaluate the propagation conditions of the deployment scenario prior to the system implantation in order to reach a compromise between the robustness of the network and the transmission data-rate.

  3. Downregulation of MDM2 expression by RNAi inhibits LoVo human colorectal adenocarcinoma cells growth and the treatment of LoVo cells with mdm2siRNA3 enhances the sensitivity to cisplatin

    International Nuclear Information System (INIS)

    Yu Yan; Sun Ping; Sun Lichun; Liu Guoyi; Chen Guohua; Shang Lihua; Wu Hongbo; Hu Jing; Li Yue; Mao Yinling; Sui Guangjie; Sun Xiwen

    2006-01-01

    To investigate the biological effect of mdm2 in human colorectal adenocarcinoma LoVo cells, three mdm2siRNA constructions were recombinated and transient transfected into human colorectal adenocarcinoma LoVo cells with low differentiation character in vitro. The results showed that mdm2siRNA3 reduced mRNA level of mdm2 and protein level of mdm2, leading to proliferation inhibition on LoVo cells, and reduced tumor growth in nude mice. It was found that depletion of MDM2 in this pattern promoted apoptosis of LoVo cells and Cisplatin (DDP) treated in the mdm2siRNA3 transfected cell population would result in a substantial decrease by MTT colorimetry. Decreasing the MDM2 protein level in LoVo cells by RNAi could significantly inhibit tumor growth both in vitro and in vivo, which indicated that mdm2 gene played a definite role in the development and aggressiveness of human colon carcinoma. It also could be a therapeutic target in colorectal carcinoma. The synergistic activation of RNAi and cell toxicity agents indicated that the combination of chemotherapy and gene therapy will be a promising approach in the future

  4. Simmel y lo "cultura femenina" (Las múltiples lecturas de unos viejos textos

    Directory of Open Access Journals (Sweden)

    RAQUEL OSBORNE

    1987-01-01

    Full Text Available Se tratan algunos ensayos de Georg Simmel referentes a la "cuestion femenina". Ensayos que aparecieron originariamente en Philosophische Kultur (Leipzig: Werner Klinkhardt, 1911. Una traducción española de algunos de estos ensayos aparece entre 1923-1925 en la Revista de Occidente, editada por José Ortega y Gasset; pero tan solo recientemente han sido traducidos al inglés por Guy Oakes. Un concepto central en Simmel es la equiparación de lo "objetivo" con lo "masculino" y lo "subjetivo" con lo "femenino." Se repasan las distintas reacciones provocadas por las ideas de Simmel en diversas épocas y en las diversas comunidades del lenguaje - como las ediciones mencionadas-, incluyendo las de Karen Horney, José Ortega y Gasset, Rosa Chacel, y Julian Marías. A pesar de la publicación temprana en el mundo de habla hispana, existía una carencia de verdadero interés por la emancipación de la mujer entre esos conocedores de las ideas de Simmel, excepto Rosa Chacel.

  5. Medio ambiente, calidad de vida y consumismo. Esclavos de lo superfluo

    Directory of Open Access Journals (Sweden)

    Víctor M. Mora Padrón

    2001-06-01

    Full Text Available Nuestras vidas se encuentran programadas totalmente por costumbres, estilos de vida, intereses económicos y modas. Es evidente que siempre han existido intereses, hábitos y modas, pero nunca como ahora éstos habían sido manipulados a gran escala. Potenciando unos y otros el consumo masivo. Ante tamaño alud de productos que nos aturden, lo esencial se ha perdido entre lo secundario. Por este motivo las necesidades reales de la sociedad, hoy, son cada vez más difíciles de definir.

  6. LO-phonon and plasmon coupling in neutron-transmutation-doped GaAs

    International Nuclear Information System (INIS)

    Kuriyama, K.; Sakai, K.; Okada, M.

    1996-01-01

    Coupling between the longitudinal-optic (LO) phonon mode and the longitudinal plasma mode in neutron-transmutation-doped (NTD) semi-insulating GaAs was studied using Raman-scattering spectroscopy and a Fourier-transform infrared spectrometer. When the electron concentration due to the activation of NTD impurities (Ge Ga and Se As ) approaches ∼8x10 16 cm -3 , the LO-phonon endash plasmon coupling is observed. This behavior is consistent with the free-electron absorption due to the activation of NTD impurities in samples annealed above 600 degree C. copyright 1996 The American Physical Society

  7. Chlamydia psittaci and C. avium in feral pigeon (Columba livia domestica) droppings in two cities in the Netherlands.

    Science.gov (United States)

    Burt, Sara A; Röring, Romy E; Heijne, Marloes

    2018-06-05

    Feral pigeons (Columba livia domestica) live and breed in many city centres and contact with their droppings can be a hazard for human health if the birds carry Chlamydia psittaci. The aim of this study was to establish whether pigeon droppings in two Dutch cities (Utrecht and Haarlem) contain C. psittaci and/or C. avium, which could be a potential hazard for transmission to humans. In May 2017 seven feral pigeon 'hot spots' with between 5 and 40+ pigeons present were identified in two cities by visual observations over two days. During the following ten days fresh droppings were collected at these hot spots and the samples were pooled per three droppings to achieve 40-41 samples per city. Samples were analysed for Chlamydia DNA with a broad range 23S Chlamydiaceae Real-Time PCR and positive samples were tested with a specific C. psittaci and C. avium Real-Time PCR. Positive C. psittaci samples were genotyped. C. psittaci and C. avium were detected in both cities. For C. psittaci the prevalences in Utrecht and Haarlem were 2.4% and 7.5%, respectively; for C. avium 36.6% and 20.0%, respectively. One sample contained both species. All C. psittaci samples belonged to genotype B. C. psittaci and C. avium are present in feral pigeon droppings in Utrecht and Haarlem. Human contact with droppings from infected pigeons or inhalation of dust from dried droppings represent a potential hazard to public health.

  8. Improving high resolution retinal image quality using speckle illumination HiLo imaging.

    Science.gov (United States)

    Zhou, Xiaolin; Bedggood, Phillip; Metha, Andrew

    2014-08-01

    Retinal image quality from flood illumination adaptive optics (AO) ophthalmoscopes is adversely affected by out-of-focus light scatter due to the lack of confocality. This effect is more pronounced in small eyes, such as that of rodents, because the requisite high optical power confers a large dioptric thickness to the retina. A recently-developed structured illumination microscopy (SIM) technique called HiLo imaging has been shown to reduce the effect of out-of-focus light scatter in flood illumination microscopes and produce pseudo-confocal images with significantly improved image quality. In this work, we adopted the HiLo technique to a flood AO ophthalmoscope and performed AO imaging in both (physical) model and live rat eyes. The improvement in image quality from HiLo imaging is shown both qualitatively and quantitatively by using spatial spectral analysis.

  9. Molecular cloning, characterization, and expression analysis of ghrelin and cholecystokinin in the pigeon (Columba livia).

    Science.gov (United States)

    Xie, P; Wan, X P; Bu, Z; Zou, X T

    2016-11-01

    Ghrelin and cholecystokinin (CCK) are multifunctional peptides. In the current study, complete sequences of ghrelin (800 bp) and CCK (739 bp) were firstly cloned in Columba livia by using rapid amplification of cDNA ends (RACE) method. The open reading frames of ghrelin (351bp) and CCK (393bp) encoded 116 amino acids and 130 amino acids, respectively. Sequence comparison indicated that pigeon ghrelin and CCK shared high identity with those reported in other avian species. Quantitative real-time PCR analysis found that ghrelin and CCK mRNAs expressed in three intestinal segments of pigeon during development. Both ghrelin and CCK showed generally higher expressions at days posthatch than embryonic periods regardless of intestinal segments. In duodenum and ileum, the expressions of ghrelin and CCK mRNA reached the peak values at 8 d posthatch. Jejunum CCK mRNA level increased linearly after hatching, and reached the highest point at posthatch 28 d. Based on documented effects of long chain fatty acids (LCFAs) on pigeon ghrelin and CCK expression were also investigated in vitro. Higher concentrations (50 μM or 250 μM) of linoleic acid, α-linolenic acid or arachidonic acid can significantly increase ghrelin mRNA level in pigeon jejunum. However, for oleic acid, the induction of ghrelin gene expressions needed a lower concentration (5 μM). 5 μM of linoleic acid, α-linolenic acid or arachidonic acid and 250 μM palmitic acid repressed CCK expression significantly. A higher concentration (250 μM) of oleic acid or α-linolenic acid can up-regulate CCK mRNA level significantly. Our results indicated that ghrelin and CCK may act key functions in pigeon intestine development and their expressions could be regulated by LCFAs. © 2016 Poultry Science Association Inc.

  10. Negociar lo que vas a negociar: el proceso de negociación

    OpenAIRE

    Soleto Muñoz, Helena

    2010-01-01

    Uno de los momentos clave del proceso de negociación es el de programación, pues, dado que las partes suelen tener distintas formas de contemplar la negociación, es positivo que se dediquen a "negociar lo que se va a negociar", aclarando en lo posible la forma de las reuniones, la extensión de la negociación y las reglas básicas en la negociación.

  11. The effect of endoscopic sterilization on reproductive behavior and pair bond maintenance of feral pigeons (Columba livia).

    Science.gov (United States)

    Heiderich, E; Failing, K; Lierz, M; Schildger, B

    2016-01-01

    Problems related to feral pigeons (Columba livia) in cities mainly result from their large numbers due to uncontrolled population growth. The aim of this study was to evaluate whether endoscopic guided sterilization affects the reproductive behavior of feral pigeons under experimental conditions, with the intention of assessing this technique as a potential method for feral pigeon population control. Five groups of four pairs of feral pigeons each were studied from 8 weeks before, to 7 weeks after sterilization. Both the male and female of the first pair of each group were sterilized, in the second pair only the female and in the third pair only the male was sterilized. The fourth pair acted as a control. All eggs laid were candled to assess fertility. Surgical sterilization had minimal effects on behavior and therefore seems not to have impact on possible field application for population control. All pairs maintained their pair bonds and continued to defend their nesting sites against other pigeons. Only one female copulated with a foreign fertile male while her primary partner was debilitated due to surgery, but returned to him as soon as he recovered. All eggs laid more than 5 days after male sterilization were infertile, whereas all control pairs had fertile eggs. Only one fertile clutch was produced, 5 days after the male's sterilization. Therefore it is assumed that males remain fertile for a limited period of time. Endoscopic sterilization seems to be a promising method for field control of feral pigeon populations and sterilization of the male only seems sufficient.

  12. Maternal thyroid hormones enhance hatching success but decrease nestling body mass in the rock pigeon (Columba livia).

    Science.gov (United States)

    Hsu, Bin-Yan; Dijkstra, Cor; Darras, Veerle M; de Vries, Bonnie; Groothuis, Ton G G

    2017-01-01

    Thyroid hormones (THs) - triiodothyronine (T3) and thyroxine (T4) - are essential for embryonic development in vertebrates. All vertebrate embryos are exposed to THs from maternal origin. As maternal TH levels are known to be essential to embryonic development, the natural variation of maternal THs probably represents a pathway of maternal effects that can modify offspring phenotype. However, potential fitness consequences of variation of maternal TH exposure within the normal physiological range and without confounding effects of the mother have never been experimentally investigated. We experimentally manipulated the levels of yolk T3 and T4 within the physiological range in a species in which the embryo develops outside the mother's body, the Rock Pigeon (Columba livia) eggs. Making use of the natural difference of yolk testosterone between the two eggs of pigeon clutches, we were also able to investigate the potential interaction between THs and testosterone. Elevated yolk TH levels enhanced embryonic development and hatching success, and reduced body mass but not tarsus length between day 14 and fledging. The yolk hormones increased plasma T4 concentrations in females but reduced it in males, in line with the effect on metabolic rate at hatching. Plasma concentrations of T3 and testosterone were not significantly affected. The effects of treatment did not differ between eggs with high or low testosterone levels. Our data indicate that natural variation in maternal yolk TH levels affects offspring phenotype and embryonic survival, potentially influencing maternal and chick fitness. Copyright © 2016 Elsevier Inc. All rights reserved.

  13. Trace metals, melanin-based pigmentation and their interaction influence immune parameters in feral pigeons (Columba livia).

    Science.gov (United States)

    Chatelain, M; Gasparini, J; Frantz, A

    2016-04-01

    Understanding the effects of trace metals emitted by anthropogenic activities on wildlife is of great concern in urban ecology; yet, information on how they affect individuals, populations, communities and ecosystems remains scarce. In particular, trace metals may impact survival by altering the immune system response to parasites. Plumage melanin is assumed to influence the effects of trace metals on immunity owing to its ability to bind metal ions in feathers and its synthesis being coded by a pleiotropic gene. We thus hypothesized that trace metal exposure would interact with plumage colouration in shaping immune response. We experimentally investigated the interactive effect between exposure to an environmentally relevant range of zinc and/or lead and melanin-based plumage colouration on components of the immune system in feral pigeons (Columba livia). We found that zinc increased anti-keyhole limpet hemocyanin (KLH) IgY primary response maintenance, buffered the negative effect of lead on anti-KLH IgY secondary response maintenance and tended to increase T-cell mediated phytohaemagglutinin (PHA) skin response. Lead decreased the peak of the anti-KLH IgY secondary response. In addition, pheomelanic pigeons exhibited a higher secondary anti-KLH IgY response than did eumelanic ones. Finally, T-cell mediated PHA skin response decreased with increasing plumage eumelanin level of birds exposed to lead. Neither treatments nor plumage colouration correlated with endoparasite intensity. Overall, our study points out the effects of trace metals on some parameters of birds' immunity, independently from other confounding urbanization factors, and underlines the need to investigate their impacts on other life history traits and their consequences in the ecology and evolution of host-parasite interactions.

  14. Defensive behaviors and prosencephalic neurogenesis in pigeons (Columba livia) are affected by environmental enrichment in adulthood.

    Science.gov (United States)

    Melleu, F F; Pinheiro, M V; Lino-de-Oliveira, C; Marino-Neto, J

    2016-05-01

    Neurogenesis in the adult brain appears to be phylogenetically conserved across the animal kingdom. In pigeons and other adult non-oscine birds, immature neurons are observed in several prosencephalic areas, suggesting that neurogenesis may participate in the control of different behaviors. The mechanisms controlling neurogenesis and its relevance to defensive behaviors in non-oscine birds remain elusive. Herein, the contribution of the environment to behavior and neurogenesis of pigeons was investigated. Adult pigeons (Columba livia, n = 6/group), housed in standard (SE) or enriched environment (EE) for 42 days, were exposed to an unfamiliar environment (UE) followed by presentation to a novel object (NO). Video recordings of UE+NO tests were analyzed and scored for latency, duration and frequency of angular head movements, peeping, grooming, immobility and locomotion. Twenty-four hours later, pigeons were submitted to the tonic immobility test (TI) and number of trials for TI and TI duration were scored, followed by euthanasia 2 h later. Brains were immunohistochemically processed to reveal doublecortin (DCX), a marker for newborn neurons. Compared to those housed in SE, the pigeons housed in EE responded to a NO with more immobility. In addition, the pigeons housed in EE presented longer TI, more DCX-immunoreactive (DCX-ir) cells in the hippocampus and fewer DCX-ir cells in the lateral striatum than those housed in SE. There was no correlation between the number of DCX-ir cells and the scores of immobility in behavioral tests. Together, these data suggest that enrichment favored behavioral inhibition and neurogenesis in the adult pigeons through different, parallel mechanisms.

  15. COMPARATIVE EFFICACY (SEDATIVE AND ANAESTHETIC OF DETOMIDINE, KETAMINE AND DETOMIDINE-KETAMINE COCKTAIL IN PIGEONS (COLUMBA LIVIA

    Directory of Open Access Journals (Sweden)

    UZMA F. DURRANI, M. ARIF KHAN1 AND S. SALEEM AHMAD

    2008-07-01

    Full Text Available A study was conducted to compare the synergistic efficacy of detomidine, ketamine and their cocktail in pigeons (Columba livia. For this study, 15 adult and healthy pigeons were divided into three equal groups A, B and C. Birds of groups A and B were intramuscularly administered detomidine and ketamine @ 1.4 and 60 mg/kg b. wt., respectively. Pigeons of group C received detomidine + Ketamine cocktail @ 0.7 and 30 mg/kg b. wt. Induction of sedation and anaesthesia was smooth in all groups. Mean duration of induction was 11.1 + 2.03, 11.0 + 1.49 and 1.6 + 0.48 minutes in groups A, B, C, respectively. In groups A and B, smooth but light sedation and anaesthesia were observed accompanied by superficial analgesia, while in group C, birds showed deep anaesthesia alongwith deep analgesia. Birds in groups A and C elicited hypothermia, respiratory depression and bradycardia till complete recovery, while group B showed hyperthermia and tachycardia with rapid respiration. In group A, sedation persisted for 54.2 + 21.82 minutes and mean recovery period was 49.9 + 5.91 minutes, while groups B and C had anaesthesia for 47.7 + 8.06 and 103.5 + 27.52 minutes, and recovery periods were 52.6 + 9.64 and 61.3 + 17.26 minutes, respectively. Recovery was rough in group B and smooth in groups A and C. It was concluded that in pigeons, detomidine (alone is safe for handling and for least painful procedures, while detomidine-ketamine cocktail is safe as intramuscular anaesthetic for major surgical procedures. However, ketamine is not a good anaesthetic to be used alone in pigeons.

  16. Aproximaciones a una estética de lo americano

    Directory of Open Access Journals (Sweden)

    María del Milagro Casalla

    2010-01-01

    Full Text Available El legado filosófico que nos ha dejado Rodolfo Kusch tiene cada vez más presencia y valor en este largo itinerario de descubrirnos como americanos. La pasión de este pensador por la América profunda es una fuente de ins- piración para quienes creemos que vivir en América no es simplemente un episodio geográfico sino un horizonte desde y a partir del cual construimos nuestra identidad. En este trabajo se pretende recrear sus consideracio - nes estéticas recogidas en su ensayo “Anotaciones para una estética de lo americano”, escrito en el año 1955. Aunque se trata de uno de los primeros escritos de Rodolfo Kusch, en el mismo se encuentran presentes numerosos conceptos que luego serán tematizados extensamente a lo largo de toda su obra. Considero que el abordaje a sus consideraciones estéticas no ha sido tan frecuentado como sí otros aspectos de su pensamiento (ser-estar, geocultura, símbolo y religión, etc.. Por ello, creo que este trabajo puede constituir una orientación preeliminar para futuras interpretaciones y, a la vez, ser un humilde homenaje a su filosofía, que, a lo largo de los años, sigue estimulando a antiguas y nuevas generaciones de pensadores dedicados a la filosofía latinoamericana.

  17. Alessandro Volta, l'uomo e lo scienziato

    OpenAIRE

    Bevilacqua, F.; Falomo, L.; Montalbetti, Claudia

    1999-01-01

    Per il secondo centenario dell'invenzione della pila elettrica da parte di Alessandro Volta continuano a nascere interessanti iniziative. L'ultima in ordine di tempo, ma non certo per importanza, è stata la progettazione e la realizzazione del sito Alessandro Volta, l'uomo e lo scienziato, che ha visto collaborare attivamente il Laboratorio di Tecnologie Educative Multimediali (Università di Pavia - Dipartimento di Fisica "A. Volta") e il CILEA

  18. La falta de Laclau: lo imaginario

    Directory of Open Access Journals (Sweden)

    Julio Aibar

    2014-06-01

    Full Text Available En la obra de Laclau hay una clara deficiencia: la del registro de lo Imaginario. La no inclusión de ese registro en el andamiaje conceptual que sostiene a la teoría de la hegemonía, hace que la misma sea endeble en sus principales desarrollos. En este artículo doy cuenta, a la luz de la obra de Lacan, del silencio teórico de Laclau, para después explorar las consecuencias de dicho silencio para el análisis político.

  19. Del viaje o de lo órfico en la literatura

    Directory of Open Access Journals (Sweden)

    Carlos Guevara A.

    1997-04-01

    Full Text Available Una de las características del mito es el reconocimiento de una carencia en el tiempo presente. El mito de Orfeo con su descenso al Hades, puede simbolizar, y de hecho simboliza, la inclinación humana que por el sendero de la iniciación logra el descubrimiento del ser interior, del sí mismo junguiano, en donde reside la verdad de cada hombre. En la literatura universal (antigua y contemporánea el viaje del protagonista representa ese descenso al Hades por parte de los individuos que, queriendo trascender lo material, se hallan frente a la luz interior que suplirá las carencias de la vida prosaica en la que discurre lo mundano.

  20. Del viaje o de lo órfico en la literatura

    Directory of Open Access Journals (Sweden)

    Carlos Guevara A.

    1997-01-01

    Full Text Available Una de las características del mito es el reconocimiento de una carencia en el tiempo presente. El mito de Orfeo con su descenso al Hades, puede simbolizar, y de hecho simboliza, la inclinación humana que por el sendero de la iniciación logra el descubrimiento del ser interior, del sí mismo junguiano, en donde reside la verdad de cada hombre. En la literatura universal (antigua y contemporánea el viaje del protagonista representa ese descenso al Hades por parte de los individuos que, queriendo trascender lo material, se hallan frente a la luz interior que suplirá las carencias de la vida prosaica en la que discurre lo mundano.

  1. LO2/LH2 propulsion for outer planet orbiter spacecraft

    Science.gov (United States)

    Garrison, P. W.; Sigurdson, K. B.

    1983-01-01

    Galileo class orbiter missions (750-1500 kg) to the outer planets require a large postinjection delta-V for improved propulsion performance. The present investigation shows that a pump-fed low thrust LO2/LH2 propulsion system can provide a significantly larger net on-orbit mass for a given delta-V than a state-of-the-art earth storable, N2O4/monomethylhydrazine pressure-fed propulsion system. A description is given of a conceptual design for a LO2/LH2 pump-fed propulsion system developed for a Galileo class mission to the outer planets. Attention is given to spacecraft configuration, details regarding the propulsion system, the thermal control of the cryogenic propellants, and aspects of mission performance.

  2. En los bordes de lo jurídico: campesinos y justicia en Santiago del Estero

    Directory of Open Access Journals (Sweden)

    Pablo Barbetta

    2010-12-01

    Full Text Available El objetivo de este trabajo se centrará en la forma en que el conflicto por la tenencia legal de la tierra llevado a cabo por las comunidades campesinas se expresa en el ámbito judicial. Priorizamos dicho ámbito por sobre otros ya que, en la tradición democrática, en él se determina lo que es justo y lo injusto, esto es, se establece la medida misma según la cual cada parte sólo toma lo que le corresponde (Rancière, 1996. En este contexto, me interesan particularmente dos cuestiones. La primera, abordar la forma en que los distintos sujetos intervinientes representan los acontecimientos de un modo judiciable. La segunda cuestión remite a analizar cómo los jueces se trasladan de estos lenguajes de la imaginación a otro, que supone la toma de una decisión. Es decir, se trata de analizar y comprender el papel de los jueces en lo relativo a la resolución de los conflictos entre campesinos y empresarios.

  3. La posteridad sociológica de Auguste Comte: Lo normal y lo patológico en Durkheim

    Directory of Open Access Journals (Sweden)

    MICHEL BOURDEAU

    2008-01-01

    Full Text Available Este artículo completa un texto que, bajo el título «Ciencia, religión y sociedad en Auguste Comte», fue publicado en el año 2003 en las páginas de esta revista. Después de un breve repaso de los conceptos sociológicos fundamentales del Cours de philosophie positive, se muestra como el pensamiento de Durkheim se constituyó a través de una discusión crítica con el positivismo. Concretamente, se examinan dos momentos fundamentales de dicha confrontación. En primer lugar, se analiza como la distinción que Durkheim establece en La división du travail social (1893 entre solidaridad mecánica y solidaridad orgánica tenía como objetivo fundamental demostrar que Comte se había equivocado al extraer ciertas consecuencias sobre el progreso de la división del trabajo. En segundo lugar, se muestra como en Les Règles de la méthode sociologique (1895, Durkheim atribuye a Comte la distinción entre lo normal y lo patológico y reinterpreta dicha distinción a partir del concepto de «media» de Quételet. En este contexto, concluimos señalando que Durkheim debe a Comte la idea de que la sociología permite construir una ciencia de la moral.

  4. Fast Calcium Imaging with Optical Sectioning via HiLo Microscopy.

    Science.gov (United States)

    Lauterbach, Marcel A; Ronzitti, Emiliano; Sternberg, Jenna R; Wyart, Claire; Emiliani, Valentina

    2015-01-01

    Imaging intracellular calcium concentration via reporters that change their fluorescence properties upon binding of calcium, referred to as calcium imaging, has revolutionized our way to probe neuronal activity non-invasively. To reach neurons densely located deep in the tissue, optical sectioning at high rate of acquisition is necessary but difficult to achieve in a cost effective manner. Here we implement an accessible solution relying on HiLo microscopy to provide robust optical sectioning with a high frame rate in vivo. We show that large calcium signals can be recorded from dense neuronal populations at high acquisition rates. We quantify the optical sectioning capabilities and demonstrate the benefits of HiLo microscopy compared to wide-field microscopy for calcium imaging and 3D reconstruction. We apply HiLo microscopy to functional calcium imaging at 100 frames per second deep in biological tissues. This approach enables us to discriminate neuronal activity of motor neurons from different depths in the spinal cord of zebrafish embryos. We observe distinct time courses of calcium signals in somata and axons. We show that our method enables to remove large fluctuations of the background fluorescence. All together our setup can be implemented to provide efficient optical sectioning in vivo at low cost on a wide range of existing microscopes.

  5. The ontogeny of nutrient transporter and digestive enzyme gene expression in domestic pigeon (Columba livia) intestine and yolk sac membrane during pre- and posthatch development.

    Science.gov (United States)

    Dong, X Y; Wang, Y M; Yuan, C; Zou, X T

    2012-08-01

    To better understand the digestive capacity in domestic pigeons (Columba livia), this study was conducted to evaluate nutrient transporters and digestive enzymes gene expression in small intestine and yolk sac membrane (YSM) during pre- and posthatch development. We investigated the oligopeptide transporter Pept1, sodium glucose transporter SGLT1, glucose transporter GLUT2, aminopeptidase-N (APN), and sucrase-isomaltase (SI). Intestine was collected at embryo d 12, 14, and 16, day of hatch, and d 1, 3, 5, 8, and 14 posthatch. The YSM was collected at embryo d 12, 14, 16, and day of hatch. The cDNA fragments for Pept1, SGLT1, GLUT2, APN, and SI were isolated and cloned using reverse-transcription PCR. The sequences data showed that these genes were highly identical to the gene of chicken. The mRNA expression of each gene was assayed using real-time PCR. Expression of intestinal nutrient transporters increased linearly (Ppigeons and establish a foundation for future research on the nutrients requirements for young pigeons.

  6. Lo Gnomone Clementino Astronomia Meridiana in Basilica

    Science.gov (United States)

    Sigismondi, Costantino

    2014-05-01

    Costruito per chiara volontà del papa 70 anni dopo il caso Galileo, lo Gnomone Clementino è un grande telescopio solare che non fa uso di lenti a 92 anni dall’invenzione del cannocchiale. Queste due caratteristiche basterebbero da sole a giustificare l’interesse verso questo strumento. L’astronomia meridiana è alla base dell’astrometria e dell’astrofisica moderna. Lo Gnomone Clementino sta oggi all’astronomia, come il veliero “Amerigo Vespucci” sta alla Marina Italiana. E’ possibile svolgere ogni genere di osservazione e studio su questo strumento, e dal 2002 vi tengo lezioni teorico-pratiche del corso di Storia dell’Astronomia e La Terra nel Sistema Solare della Sapienza, Università di Roma, Facoltà di Lettere e Filosofia. Questo testo aggiunge alcuni tasselli alla ricerca storica sulla meridiana, appoggiandosi, com’è naturale, sulle spalle di giganti che mi hanno preceduto in questi studi. In particolare la misura dell’azimut della meridiana, ed il suo inquadramento tra gli strumenti simili ed alcuni studi di astrometria sui dati del 1701-1703 di Bianchini, che sono apparsi fin’ora soltanto su riviste specializzate ed in Inglese vengono qui proposti in Italiano e semplificati, per valorizzare sempre più questa straordinaria opera d’arte e di scienza.

  7. Raul Meel ja Ülo Sooster ajakirjas Zimmerli Journal

    Index Scriptorium Estoniae

    2007-01-01

    Ajakirjas Zimmerli Journal, Fall, 2006, lk. 88-103 Jeremy Canwelli artikkel "System, Terminus and Time : The Mystical Art of Raul Meel" ja lk. 118-125 Leonid Lammi mälestused "Ülo Sooster : an Artist, a Friend and his Time"

  8. Las miradas poéticas de Narciso y Medusa: la transformacion de lo real

    Directory of Open Access Journals (Sweden)

    Sergio Blanco

    2015-04-01

    Full Text Available Al ser director tanto académico como artístico de este proyecto europeo Crossing Stages, esta doble condición me lleva a tomar la palabra desde estos dos lugares, es decir, desde lo académico y desde lo artístico. Desde dos lugares entonces casi antagónicos. La toma de la palabra académica responde en cierta forma a ciertas máximas de claridad y precisión, suele tender a ser un discurso mesurado, ordenado y equilibrado, que en cierta forma busca un conocimiento erudito por medio de procedimientos científicos lo más objetivos y sólidos posibles. Mientras que la toma de la palabra artística es todo lo contrario, es una palabra oscura, confusa, hiperbólica, amanerada, completamente desmesurada y caótica, y basada en experiencias y caprichos inminentemente subjetivos. Se me plantea entonces desde qué lugar hablar:  

  9. Araucanía (Chile) y su territorio: un contraste entre lo etéreo y lo material

    OpenAIRE

    Rodríguez Domínguez, Cristian Pablo; Saavedra Teigue, Andrea Alejandra

    2010-01-01

    La Araucanía, ubicada al sur de Chile, es uno de los territorios que posee mayor diversidad cultural como fruto del proceso de colonización que otorgó un sello distintivo a esta zona a fines del siglo XIX, lo que se puede apreciar en diferentes manifestaciones, muchas de las cuales encuentran su máxima expresión a través de la arquitectura, la que materializa una compleja realidad cargada de ritos, emocionalidad y tradiciones tanto europeas, chilenas o mapuche que conviven fundiéndose en un p...

  10. Relato policial y el crimen que lo habita

    Directory of Open Access Journals (Sweden)

    Francisco de Undurraga

    2011-05-01

    Full Text Available La aparición de publicidad y de novelas en serie en las portadas de periódicos franceses, apartir de 1836, marca la relación entre el género policial y los nuevos modos de visibilidad de la información en las sociedades industrializadas. Algunos ejemplos, tomados de un periódico de la época, la "Gazette des Tribunaux", permiten demostrar que la prensa estuvo desde sus comienzos vinculada a la literatura, si acaso no es una derivación de ella. E.A. Poe, creador del relato policial, conduce la retórica del morbo trabajada por Dante, Swift, Lautréamont y Baudelaire, de una apelación al lector, al orden del argumento y del procedimiento que lo estructura. En el relato policial conviven el discurso de lo que se cuenta, característico de la literatura, y el de la ciencia, pero solo en apariencia éste viene a suplantar a aquél, configurando de este modo su retórica.

  11. Vingerpussid Juku ja Juhani palgaga / Ülo Ennuste

    Index Scriptorium Estoniae

    Ennuste, Ülo, 1932-

    2004-01-01

    Majandusprofessor Ülo Ennuste võrdleb 5000 ja 50 000 kroonise palga 5-10%-list tõusu ja järeldab, et ebavõrdsete majanduste puhul ei saa iga lõppeva aasta kohta teha mõistlike majanduslikku edukuse võrdlusi kasvutempode ja valemite alusel. Autor rõhutab, et tõepärane tulevikuarvutus peab olema tõenäosuslik

  12. Sedimentation survey of Lago Loíza, Trujillo Alto, Puerto Rico, July 2009

    Science.gov (United States)

    Soler-López, Luis R.; Licha-Soler, N.A.

    2014-01-01

    Lago Loíza is a reservoir formed at the confluence of Río Gurabo and Río Grande de Loíza in the municipality of Trujillo Alto in central Puerto Rico, about 10 kilometers (km) north of the town of Caguas, about 9 km northwest of Gurabo, and about 3 km south of Trujillo Alto (fig. 1). The Carraizo Dam is owned and operated by the Puerto Rico Aqueduct and Sewer Authority (PRASA), and was constructed in 1953 as a water-supply reservoir for the San Juan Metropolitan area. The dam is a concrete gravity structure that is located in a shallow valley and has a gently sloping left abutment and steep right abutment. Non-overflow sections flank the spillway section. Waterways include an intake structure for the pumping station and power plant, sluiceways, a trash sluice, and a spillway. The reservoir was built to provide a storage capacity of 26.8 million cubic meters (Mm3) of water at the maximum pool elevation of 41.14 meters (m) above mean sea level (msl) for the Sergio Cuevas Filtration Plant that serves the San Juan metropolitan area. The reservoir has a drainage area of 538 square kilometers (km2) and receives an annual mean rainfall that ranges from 1,600 to 5,000 millimeters per year (mm/yr). The principal streams that drain into Lago Loíza are the Río Grande de Loíza, Río Gurabo, and Río Cañas. Two other rivers, the Río Bairoa and Río Cagüitas, discharge into the Río Grande de Loíza just before it enters the reservoir. The combined mean annual runoff of the Río Grande de Loíza and the Río Gurabo for the 1960–2009 period of record is 323 Mm3. Flow from these streams constitutes about 89 percent of the total mean annual inflow of 364 Mm3 to the reservoir (U.S. Geological Survey, 2009). Detailed information about Lago Loíza reservoir structures, historical sediment accumulation, and a dredge conducted in 1999 are available in Soler-López and Gómez-Gómez (2005). During July 8–15, 2009, the U.S. Geological Survey (USGS) Caribbean Water Science

  13. Lo global y lo local en la tecnología del deporte

    Directory of Open Access Journals (Sweden)

    KLAUS HEINEMANN

    2009-09-01

    Full Text Available En el presente artículo se analizan los efectos de la globalización y el influjo de las culturas locales sobre el desarrollo y el uso de las tecnologías del deporte –como por ejemplo, de barcos de vela, bicicletas, esquíes, etc.– y sobre la expansión de los mercados de comercialización de artículos deportivos. Se señala que sólo cuando exista una profunda diferenciación de una tecnología del deporte concreta podrá hacerse visible la diversidad de los efectos globales y locales. Contra la tesis de una estandarización mundial de bienes y servicios uniformes y, por tanto, de una nivelación de la práctica deportiva, se encuentra el hecho de que con el desarrollo tecnológico se incrementan enormemente los “grados de libertad”, que abren un espacio casi inagotable a la individualización y a la capacidad de adaptación a las culturas locales.

  14. Morphological properties of the last primaries, the tail feathers, and the alulae of Accipiter nisus, Columba livia, Falco peregrinus, and Falco tinnunculus.

    Science.gov (United States)

    Schmitz, Anke; Ponitz, Benjamin; Brücker, Christoph; Schmitz, Helmut; Herweg, Jan; Bleckmann, Horst

    2015-01-01

    We investigated the mechanical properties (Young's modulus, bending stiffness, barb separation forces) of the tenth primary of the wings, of the alulae and of the middle tail feathers of Falco peregrinus. For comparison, we also investigated the corresponding feathers in pigeons (Columba livia), kestrels (Falco tinnunculus), and sparrowhawks (Accipiter nisus). In all four species, the Young's moduli of the feathers ranged from 5.9 to 8.4 GPa. The feather shafts of F. peregrinus had the largest cross-sections and the highest specific bending stiffness. When normalized with respect to body mass, the specific bending stiffness of primary number 10 was highest in F. tinnunculus, while that of the alula was highest in A. nisus. In comparison, the specific bending stiffness, measured at the base of the tail feathers and in dorso-ventral bending direction, was much higher in F. peregrinus than in the other three species. This seems to correlate with the flight styles of the birds: F. tinnunculus hovers and its primaries might therefore withstand large mechanical forces. A. nisus has often to change its flight directions during hunting and perhaps needs its alulae for this maneuvers, and in F. peregrinus, the base of the tail feathers might need a high stiffness during breaking after diving. © 2014 Wiley Periodicals, Inc.

  15. A Val85Met Mutation in Melanocortin-1 Receptor Is Associated with Reductions in Eumelanic Pigmentation and Cell Surface Expression in Domestic Rock Pigeons (Columba livia)

    Science.gov (United States)

    Guernsey, Michael W.; Ritscher, Lars; Miller, Matthew A.; Smith, Daniel A.; Schöneberg, Torsten; Shapiro, Michael D.

    2013-01-01

    Variation in the melanocortin-1 receptor (Mc1r) is associated with pigmentation diversity in wild and domesticated populations of vertebrates, including several species of birds. Among domestic bird species, pigmentation variation in the rock pigeon ( Columba livia ) is particularly diverse. To determine the potential contribution of Mc1r variants to pigment diversity in pigeons, we sequenced Mc1r in a wide range of pigeon breeds and identified several single nucleotide polymorphisms, including a variant that codes for an amino acid substitution (Val85Met). In contrast to the association between Val85Met and eumelanism in other avian species, this change was associated with pheomelanism in pigeons. In vitro cAMP accumulation and protein expression assays revealed that Val85Met leads to decreased receptor function and reduced cell surface expression of the mutant protein. The reduced in vitro function is consistent with the observed association with reduced eumelanic pigmentation. Comparative genetic and cellular studies provide important insights about the range of mechanisms underlying diversity among vertebrates, including different phenotypic associations with similar mutations in different species. PMID:23977400

  16. Forwarding techniques for IP fragmented packets in a real 6LoWPAN network.

    Science.gov (United States)

    Ludovici, Alessandro; Calveras, Anna; Casademont, Jordi

    2011-01-01

    Wireless Sensor Networks (WSNs) are attracting more and more interest since they offer a low-cost solution to the problem of providing a means to deploy large sensor networks in a number of application domains. We believe that a crucial aspect to facilitate WSN diffusion is to make them interoperable with external IP networks. This can be achieved by using the 6LoWPAN protocol stack. 6LoWPAN enables the transmission of IPv6 packets over WSNs based on the IEEE 802.15.4 standard. IPv6 packet size is considerably larger than that of IEEE 802.15.4 data frame. To overcome this problem, 6LoWPAN introduces an adaptation layer between the network and data link layers, allowing IPv6 packets to be adapted to the lower layer constraints. This adaptation layer provides fragmentation and header compression of IP packets. Furthermore, it also can be involved in routing decisions. Depending on which layer is responsible for routing decisions, 6LoWPAN divides routing in two categories: mesh under if the layer concerned is the adaptation layer and route over if it is the network layer. In this paper we analyze different routing solutions (route over, mesh under and enhanced route over) focusing on how they forward fragments. We evaluate their performance in terms of latency and energy consumption when transmitting IP fragmented packets. All the tests have been performed in a real 6LoWPAN implementation. After consideration of the main problems in forwarding of mesh frames in WSN, we propose and analyze a new alternative scheme based on mesh under, which we call controlled mesh under.

  17. Forwarding Techniques for IP Fragmented Packets in a Real 6LoWPAN Network

    Directory of Open Access Journals (Sweden)

    Jordi Casademont

    2011-01-01

    Full Text Available Wireless Sensor Networks (WSNs are attracting more and more interest since they offer a low-cost solution to the problem of providing a means to deploy large sensor networks in a number of application domains. We believe that a crucial aspect to facilitate WSN diffusion is to make them interoperable with external IP networks. This can be achieved by using the 6LoWPAN protocol stack. 6LoWPAN enables the transmission of IPv6 packets over WSNs based on the IEEE 802.15.4 standard. IPv6 packet size is considerably larger than that of IEEE 802.15.4 data frame. To overcome this problem, 6LoWPAN introduces an adaptation layer between the network and data link layers, allowing IPv6 packets to be adapted to the lower layer constraints. This adaptation layer provides fragmentation and header compression of IP packets. Furthermore, it also can be involved in routing decisions. Depending on which layer is responsible for routing decisions, 6LoWPAN divides routing in two categories: mesh under if the layer concerned is the adaptation layer and route over if it is the network layer. In this paper we analyze different routing solutions (route over, mesh under and enhanced route over focusing on how they forward fragments. We evaluate their performance in terms of latency and energy consumption when transmitting IP fragmented packets. All the tests have been performed in a real 6LoWPAN implementation. After consideration of the main problems in forwarding of mesh frames in WSN, we propose and analyze a new alternative scheme based on mesh under, which we call controlled mesh under.

  18. "LinkedIn" loma Latvijas studentu sociālo mediju lietošanas paradumos

    OpenAIRE

    Mickēvičs, Rihards

    2013-01-01

    Bakalaura darbā „"LinkedIn" loma Latvijas studentu sociālo mediju lietošanas paradumos” aplūkots mērķa grupas kopējās interneta un sociālo mediju patēriņa tendences, komunikācijas rīku lietojums, vietnes „LinkedIn” loma Latvijas studentu sociālo mediju lietošanas aspektā un sava personīgā sociālā zīmola apzināšanās. Darbs balstīts uz četrām galvenajām daļām – teorētisko, metodoloģisko, empīrisko un rezultātu. Pamatojoties uz pieejamo teorētisko bāzi saistībā ar attiecīgo tēmu, tika veikta fok...

  19. Lo que la literatura puede aportar a la psicología social

    OpenAIRE

    Ovejero, Anastasio

    2013-01-01

    Existen básicamente dos tipos de psicología. Una psicología intuitiva y una psicología académica y profesional. Aunque las dos van por caminos diferentes, no tienen por qué contradecirse. Por el contrario, pueden apoyarse mutuamente. A mi entender, lo mejor de la psicología intuitiva, que se encuentra en la literatura y particularmente en la novela, puede serles de gran ayuda a los psicólogos académicos y profesionales. Pues bien, lo que en este trabajo se pretende es mostrar argumentos a fav...

  20. La construcción social de lo rural

    Directory of Open Access Journals (Sweden)

    María Teresa Matijasevic Arcila

    2013-04-01

    Full Text Available La investigación social apela frecuentemente a la noción rural, bien sea para delimitar el territorio objeto de estudio o para aludir a una forma de vida. El análisis de las distintas perspectivas que confluyen en la construcción de esta noción es el propósito de este artículo. Se acude para ello a las formulaciones realizadas por distintos autores respecto a las principales tendencias contemporáneas sobre la ruralidad: lo rural como signo de atraso, el continuum rural-urbano, la desruralización, la fusión urbano-rural, el reencuentro con la vida rural y la nueva ruralidad. Se presentan, asimismo, los indicadores oficiales utilizados en América Latina para medir la ruralidad o para referirse a ella en términos técnicos, sociales o políticos, así como algunas reflexiones sobre las relaciones entre estas mediciones y las perspectivas conceptuales analizadas. Finalmente, se plantea una serie de consideraciones, a manera de retos actuales, frente a la necesidad de construir reconceptualizaciones y metodologías más potentes e incluyentes sobre lo rural.

  1. La trampa del antropomorfismo. Hacia una interfaz (más compleja de lo social

    Directory of Open Access Journals (Sweden)

    Iñaki Martínez de Albeniz

    2010-11-01

    Full Text Available La enseñanza de la sociología supone, hoy día, una cura de humildad. Por más que acudamos a sofisticados modelos teóricos (la sociedad líquida, la teoría de sistemas, la fluidez social, la teoría del actor-red, que cuestionan las bases fundacionales de la sociología clásica, la práctica docente evidencia que entre los estudiantes sigue imperando una imagen simple o esquemática de lo social. La sorpresa es mayor si asumimos que se trata de una generación que se ha socializado en el uso de herramientas digitales que facilitan, en principio, la elaboración de mapas más acordes con la complejidad que lo social reviste. El antropomorfismo, la idea de que la sociedad es ante todo un agrupamiento más o menos estable de individuos, es el límite infranqueable que sigue imponiéndose a la hora de entender lo social. Para minar esta visión hegemónica es preciso acudir a disciplinas como el arte (digital, las nuevas tecnología y, en general, las innovaciones estéticas, no tanto para destruir esa representación antropomórfica de lo social sino para desfigurándola prefigurar otras más acordes con una complejidad que ya no sólo intuimos y cuyo aliento sentimos muy cerca.

  2. El interrogante de lo vivo y sus respuestas ahistóricas: desarrollo histórico del concepto de lo vivo y algunas implicaciones didácticas.

    Directory of Open Access Journals (Sweden)

    Mónica Correa (Página 153-163

    2009-07-01

    Full Text Available El  presente trabajo muestra  el desarrollo histórico y epistemológico del concepto de lo vivo, en términos de las diferentes corrientes de pensamiento que han guiado su estudio, como son: El animismo, el mecanicismo, el vitalismo, el organicismo, el pensamiento sistémico y el neomecanicismo. Además, relacionando lo  anterior con  la formación docente y buscando una reflexión acerca de la importancia de vincular la historia y la epistemología en la enseñanza de las ciencias, se hace una revisión de algunas  implicaciones  didácticas del abordaje ahistórico de de este concepto en la escuela.

  3. Lo relativo y lo universal en la defensa de las humanidades para la democracia

    Directory of Open Access Journals (Sweden)

    Liliana Galindo

    2015-09-01

    Full Text Available Cuando se pone en duda la importancia del estudio de las humanidades aparecen varios argumentos en su defensa. En este ensayo se analiza uno de ellos: la democracia las necesita. A partir del modelo educativo para la democracia que Martha Nussbaum propone en Sin fines de lucro: por qué la democracia necesita de las humanidades se explora la noción de educación liberal, la necesidad de la democracia y la idea de humanidad que aparecen en este argumento, con el fin de preguntarnos sobre la importancia que se le da al estudio especializado de las humanidades en la educación superior, lo que se entiende por ellas, su autonomía frente a su función para la democracia, y la manera en que educan la forma en que vemos a los otros y nos relacionamos con ellos. 

  4. Podemos como un acontecimiento o no: lo que vemos desde Manchester

    Directory of Open Access Journals (Sweden)

    Ian Parker

    2015-04-01

    Full Text Available En este artículo se analiza a Podemos desde la noción de “acontecimiento” teorizada por Alain Badiou y sobre la base de dos cuestiones que se relacionan con Podemos como fenómeno anti-político. En primer lugar, en lo relativo a la relación entre discurso académico y acontecimientos políticos, llegando a la conclusión de que tanto Badiou como el grupo de la Complutense que rodea a Iglesias intervinieron con éxito sobre el mundo real, desde la Universidad, desde un marco académico. La segunda cuestión tiene que ver con el modo en que nos relacionamos con acontecimientos que aun no han ocurrido. Parker concluye que el futuro de Podemos está íntimamente ligado a lo que pueda ocurrir en Grecia tras la victoria de Syriza. En este artículo se describe el impacto positivo que ha tenido Podemos para el “Left Unity” en Manchester y se aboga por un compromiso con ambas formaciones más allá de lo puramente académico. Podemos y Syriza son posibles acontecimientos cuyo carácter está aún por determinar, y cuyas implicaciones traspasan incluso las fronteras de Europa.

  5. BabeLO--An Extensible Converter of Programming Exercises Formats

    Science.gov (United States)

    Queiros, R.; Leal, J. P.

    2013-01-01

    In the last two decades, there was a proliferation of programming exercise formats that hinders interoperability in automatic assessment. In the lack of a widely accepted standard, a pragmatic solution is to convert content among the existing formats. BabeLO is a programming exercise converter providing services to a network of heterogeneous…

  6. A Study of LoRa: Long Range & Low Power Networks for the Internet of Things.

    Science.gov (United States)

    Augustin, Aloÿs; Yi, Jiazi; Clausen, Thomas; Townsley, William Mark

    2016-09-09

    LoRa is a long-range, low-power, low-bitrate, wireless telecommunications system, promoted as an infrastructure solution for the Internet of Things: end-devices use LoRa across a single wireless hop to communicate to gateway(s), connected to the Internet and which act as transparent bridges and relay messages between these end-devices and a central network server. This paper provides an overview of LoRa and an in-depth analysis of its functional components. The physical and data link layer performance is evaluated by field tests and simulations. Based on the analysis and evaluations, some possible solutions for performance enhancements are proposed.

  7. A Study of LoRa: Long Range & Low Power Networks for the Internet of Things

    Directory of Open Access Journals (Sweden)

    Aloÿs Augustin

    2016-09-01

    Full Text Available LoRa is a long-range, low-power, low-bitrate, wireless telecommunications system, promoted as an infrastructure solution for the Internet of Things: end-devices use LoRa across a single wireless hop to communicate to gateway(s, connected to the Internet and which act as transparent bridges and relay messages between these end-devices and a central network server. This paper provides an overview of LoRa and an in-depth analysis of its functional components. The physical and data link layer performance is evaluated by field tests and simulations. Based on the analysis and evaluations, some possible solutions for performance enhancements are proposed.

  8. MÁQUINAS CON ALMA. LO TÉCNICO Y LO HUMANO EN SIMONDON Y EN LA CULTURA DEL ANIME.

    Directory of Open Access Journals (Sweden)

    Alba Gonzalez Torrents

    2013-06-01

    Full Text Available En el imaginario del anime contemporáneo de ciencia ficción encontramos algunos ejemplos claros de una reinterpretación de la relación entre ser humano y tecnología  en términos no-clásicos. La filosofía de la individuación de Gilbert Simondon, con su crítica radical al individualismo y al sustancialismo, y en especial su filosofía de la técnica, centrada en la denuncia del olvido cultural de los aspectos humanos de la técnica, ofrecen una clave filosófica idónea para la exploración de ese imaginario. Mediante la aplicación de los conceptos desarrollados por Simondon en sus análisis del modo de existencia de los objetos técnico a los animes Akira, Evangelion, Ghost in The Shell y Serial Experiments Lain, muestro que existe en ellos una visión coherente e innovadora de la relación entre humanidad y técnica, que coincide en muchos aspectos con las críticas y propuestas elaboradas por el mismo Simondon. Los más importantes de estos aspectos se relacionan con la idea de la extensión tecnológica de lo humano y con los grados de integración o separación existentes entre el dominio de lo técnico y el de la espiritualidad y la religión.

  9. El Desequilibrio de lo Político en Hegel

    Directory of Open Access Journals (Sweden)

    Juan Ignacio Arias Krause

    2016-07-01

    Full Text Available El problema político de la sociedad civil se fundamenta en su doble forma de manifestarse: por un lado, en ella se revela el carácter externo u objetivo del Estado y, por otro, produce una escisión al interior del mismo Estado. Tal problema que aparece como contradictorio (el ser exterior e interior a la vez es presentado en el pensamiento político de Hegel, en vistas a superar las dicotomías que en la teoría política moderna aparecían como insalvables. Esta superación Hegel la realiza mediante una interiorización de aquellos elementos que anteriormente habían sido marginados de la política, como son lo natural y el dominio privado, los que emergerían en la sociedad civil. En este artículo se exponen estos elementos en vistas a mostrar cómo es en este movimiento de interiorización y exteriorización de ellos donde se posibilita el acontecer de lo político.

  10. Impactos de lo global en lo local: Gentrificación en ciudades latinoamericanas

    Directory of Open Access Journals (Sweden)

    Gabriel Gómez Carmona

    2015-06-01

    Full Text Available La realidad actual de nuestras ciudades implica procesos de cambio caracterizados por una recomposición de las relaciones socio-espaciales y los tradicionales patrones de convivencia y consumo. La ciudad toma un papel determinante en lo político y económico buscando su incorporación a la dinámica del mundo global; esto crea la existencia de diversas y contradictorias zonas al interior de la ciudad. El artículo analiza la renovación de las zonas centrales de dos ciudades latinoamericanas y los cambios socio-espaciales que estas ‘renovaciones’ generan pues, la evidencia muestra que la revaloración y rehabilitación de centros históricos y barrios coloniales con el fin de convertirlos en mejores lugares de tránsito, ocio y vida para sus habitantes, implican una fuerte transformación de los mismos, con realidades sociales dispares, fragmentación urbana, segregación y los consecuentes procesos de gentrificación.

  11. David Rosenthal’s Tirant lo Blanc turns 30

    Directory of Open Access Journals (Sweden)

    Jan Reinhart

    2014-12-01

    Full Text Available The groundbreaking English language translation of Tirant lo Blanc by New York poet and academic David Rosenthal remains dominant three decades after its initial, and celebrated, release. Rosenthal’s controversially fluid and concise rendering of the Valencian classic survived a serious challenge 20 years ago by a more literal version from a well-meaning amateur translator and journeyman academic backed by a leading U.S.-based Catalan scholar. The article reviews the controversy and compares the two versions, adding comments from some of the key critics. La traducció capdavantera a l’anglés del Tirant lo Blanc, feta pel poeta i erudit de Nova York, David Rosenthal, continua mantenint la seua importància, tres dècades després de publicar-se. La polèmica versió dúctil i concisa de Rosenthal del clàssic valencià, ha sobreviscut el desafiament seriós, de fa vint anys, de la versió més literal d’un benintencionat traductor amateur i acadèmci oficial, recolzat per un destacat erudit català establert als Estats Units. L’article revisa la polèmica i compara les dues versions, tot afegint els comentaris d’alguns dels crítics més importants.

  12. Ohvri säästmiseks määratakse pedofiilile tihti kergem karistus / Signe Kalberg

    Index Scriptorium Estoniae

    Kalberg, Signe, 1959-

    2007-01-01

    Seksuaalkuritegude menetlemisega seonduvat selgitab Põhja politseiprefektuuri ringkonnaprokurör Saskia Kask. Lisatud diagramm: lastevastased kuriteod ja statistikat: enamik juhtudest politseini ei jõua

  13. «Tirant lo Blanch» i la historiografia catalana medieval

    Directory of Open Access Journals (Sweden)

    Paül Limorti Payà

    2015-09-01

    Full Text Available The importance of historiography in the creation of the novel is an irrefutable fact in literature, especially in Greek inerature. Did the same happen in Catalan literature? Paül Limorti follows the traces of the historiographic genre in the making of the narrative technique of Tirant lo Blanch. Front this point of view the author analyses the creation of Diafebus as a character-narrator, which is a typical device used in the chronicies to achieve a stronger historic realism. In this sense, the author studies the manner of interrelation typical of chronicles and of Tirant lo Blanch. Another device used by Martorell to present this work as a historic recreation is the group of parallel texts (prologue and dedication which heads the book, as well as the topics which can be found in it: the false translation and the reuse of previous texts.

  14. Design and Development of Multi-Transceiver Lorafi Board consisting LoRa and ESP8266-Wifi Communication Module

    Science.gov (United States)

    Azmi, Noraini; Sudin, Sukhairi; Munirah Kamarudin, Latifah; Zakaria, Ammar; Visvanathan, Retnam; Chew Cheik, Goh; Mamduh Syed Zakaria, Syed Muhammad; Abdullah Alfarhan, Khudhur; Badlishah Ahmad, R.

    2018-03-01

    The advancement of Micro-Electro-Mechanical-Systems (MEMS), microcontroller technologies and the idea of Internet of Things (IoT) motivates the development of wireless modules (e.g. WiFi, Bluetooth, Zigbee, and LoRa) that are small and affordable. This paper aims to provide detailed information on the development of the LoRaFi board. The LoRaFi 1.0 is a multi-protocol communication board developed by Centre of Excellence for Advanced Sensor Technology (CEASTech). The board was developed for but not limited to monitor the indoor air quality. The board comprises two different wireless communication modules namely, Long-range technology (LoRa) and WiFi (using ESP8266). The board can be configured to communicate either using LoRa or WiFi or both. The board has been tested and the wireless communication operates successfully. Apart from LoRa, WiFi enables data to be forwarded to the cloud/server where the data can be stored for further data analysis. This helps provide users with real-time information on their smartphones or other applications. In the future, researchers will conduct tests to investigate the communication link quality. Newer version with reduced board size and additional wireless communication module will be developed in the future as to increase board flexibility and widen the range of applications that can use the board.

  15. Mundo plural: ¿por qué los individuos hacen lo que hacen?

    OpenAIRE

    Lahire, Bernard

    2017-01-01

    En un contexto de hiper-especialización, el artículo se pregunta por una visión panorámica de la sociedad y una concepción compleja de los individuos, que no olvide a la vez la ambición teórica y el pulso empírico. Con este objetivo, se pregunta: “¿por qué los individuos hacen lo que hacen?” y propone responder con una fórmula de estudio de las prácticas de carácter universal que combina una dimensión disposicionalista con una contextualista. De un lado, las disposiciones y competencias de lo...

  16. La renuncia del mecenas y la utopía de lo alternativo

    Directory of Open Access Journals (Sweden)

    José Manuel Tavares de Barros

    2015-01-01

    Full Text Available El autor refiere lo ocurrido en el festival internacional UMBRIAFICTION TV. 92 dedicado a producciones de ficción orientadas al mercado televisivo mundial. Cita el enfrentamiento de fuerzas entre Europa y Estados Unidos en pos de ganar audiencias y mercados para sus industrias de cine y video. Relata lo que fue la llegada del neoliberalismo a Brasil con Collor de Melo donde las medidas que se tomaron en el área cultural fueron nefastas. Concluye con que hay necesidad de reivindicar socialmente el derecho de acceso a un espacio audiovisual democrático, abierto a las más legítimas aspiraciones del ser humano.

  17. Lo evaluable del proyecto. Interrogantes desde un período de carencia.

    OpenAIRE

    Macagno, María Gabriela; Peralta, Sergio

    2014-01-01

    Documento de reflexión no derivado de investigación. Se formulan aquí -a partir del análisis de prácticas de evaluación del Taller IV de Diseño de FADU-UNL- una serie de interrogantes que buscan desplazar “lo evaluable” y “lo enseñable”, en el marco de la actual puesta en crisis y reformulación de los paradigmas de la proyectualidad y el funcionalismo. Para ello, se interroga el aprendizaje de los docentes, los criterios de evaluación y las limitaciones de la materia prima en relación co...

  18. Esplendor y ruina de un paradigma. Lo relacional: París-Madrid, Madrid-León

    OpenAIRE

    Albarrán Diego, Juan

    2011-01-01

    [ES] El objetivo de este artículo es analizar el nacimiento de la estética relacional como propuesta teórica y paradigma institucional a partir de los escritos y programas expositivos desarrollados por Nicolas Bourriaud desde finales de los años noventa, revisando al mismo tiempo las críticas recibidas por dicho paradigma en el contexto de una problemática articulación de lo estético, lo artístico y lo político. Acto seguido, estudiaremos hasta qué punto y desde qué presupuestos se produce un...

  19. Cornerstones at the onset of scientific approach in sports training and physical education in Estonia / Atko Viru

    Index Scriptorium Estoniae

    Viru, Atko-Meeme, 1932-2007

    2003-01-01

    Kolmest spordiraamatust: Pihkala, Lauri. Poiste spordi õpetus. Tallinn, 1918 ; Kalamees, Aleksander. Algkooli kehakasvatuse käsiraamat. Tallinn, 1936 ; Kask, Mihkel. Sporditervishoid. Tartu ; Tallinn, 1939

  20. Parasite distribution and early-stage encephalitis in Sarcocystis calchasi infections in domestic pigeons (Columba livia f. domestica).

    Science.gov (United States)

    Maier, Kristina; Olias, Philipp; Enderlein, Dirk; Klopfleisch, Robert; Mayr, Sylvia L; Gruber, Achim D; Lierz, Michael

    2015-01-01

    Pigeon protozoal encephalitis is a biphasic, neurologic disease of domestic pigeons (Columba livia f. domestica) caused by the apicomplexan parasite Sarcocystis calchasi. Despite severe inflammatory lesions of the brain, associated parasitic stages have only rarely been identified and the cause of the lesions is still unclear. The aim of this study was therefore to characterize the tissue distribution of S. calchasi within pigeons between the two clinical phases and during the occurrence of neurological signs. For this purpose, a semi-quantitative real-time polymerase chain reaction (PCR) was developed. Forty-five domestic pigeons were infected orally (via a cannula into the crop) with 200 S. calchasi sporocysts and euthanized in groups of three pigeons at intervals of 2 to 10 days over a period of 61 days. Tissue samples including brain and skeletal muscle were examined by histology, immunohistochemistry, and PCR. Schizonts were detected in the liver of one pigeon at day 10 post infection. A mild encephalitis was detected at day 20 post infection, around 4 weeks before the onset of neurological signs. At the same time, immature sarcocysts were present in the skeletal muscle. In seven pigeons a few sarcocysts were identified in the brain, but not associated with any lesion. These results suggest that the encephalitis is induced at a very early stage of the S. calchasi lifecycle rather than in the chronic phase of pigeon protozoal encephalitis. Despite the increasing severity of lesions in the central nervous system, the amount of sarcocysts did not increase. This supports the hypothesis of a delayed-type hypersensitivity response as the cause of the encephalitis. The study also demonstrated that S. calchasi DNA is detectable in tissues negative by histological methods, indicating a higher sensitivity of the real-time PCR.

  1. Putative adult neurogenesis in two domestic pigeon breeds (Columba livia domestica): racing homer versus utility carneau pigeons.

    Science.gov (United States)

    Mazengenya, Pedzisai; Bhagwandin, Adhil; Nkomozepi, Pilani; Manger, Paul R; Ihunwo, Amadi O

    2017-07-01

    Generation of neurons in the brains of adult birds has been studied extensively in the telencephalon of song birds and few studies are reported on the distribution of PCNA and DCX in the telencephalon of adult non-song learning birds. We report here on adult neurogenesis throughout the brains of two breeds of adult domestic pigeons (Columba livia domestica), the racing homer and utility carneau using endogenous immunohistochemical markers proliferating cell nuclear antigen (PCNA) for proliferating cells and doublecortin (DCX) for immature and migrating neurons. The distribution of PCNA and DCX immunoreactivity was very similar in both pigeon breeds with only a few minor differences. In both pigeons, PCNA and DCX immunoreactivity was observed in the olfactory bulbs, walls of the lateral ventricle, telencephalic subdivisions of the pallium and subpallium, diencephalon, mesencephalon and cerebellum. Generally, the olfactory bulbs and telencephalon had more PCNA and DCX cells than other regions. Two proliferative hotspots were evident in the dorsal and ventral poles of the lateral ventricles. PCNA- and DCX-immunoreactive cells migrated radially from the walls of the lateral ventricle into the parenchyma. In most telencephalic regions, the density of PCNA- and DCX-immunoreactive cells increased from rostral to caudal, except in the mesopallium where the density decreased from rostral to middle levels and then increased caudally. DCX immunoreactivity was more intense in fibres than in cell bodies and DCX-immunoreactive cells included small granular cells, fusiform bipolar cells, large round and or polygonal multipolar cells. The similarity in the distribution of proliferating cells and new neurons in the telencephalon of the two breeds of pigeons may suggest that adult neurogenesis is a conserved trait as an ecological adaptation irrespective of body size.

  2. Putative adult neurogenesis in two domestic pigeon breeds (Columba livia domestica: racing homer versus utility carneau pigeons

    Directory of Open Access Journals (Sweden)

    Pedzisai Mazengenya

    2017-01-01

    Full Text Available Generation of neurons in the brains of adult birds has been studied extensively in the telencephalon of song birds and few studies are reported on the distribution of PCNA and DCX in the telencephalon of adult non-song learning birds. We report here on adult neurogenesis throughout the brains of two breeds of adult domestic pigeons (Columba livia domestica, the racing homer and utility carneau using endogenous immunohistochemical markers proliferating cell nuclear antigen (PCNA for proliferating cells and doublecortin (DCX for immature and migrating neurons. The distribution of PCNA and DCX immunoreactivity was very similar in both pigeon breeds with only a few minor differences. In both pigeons, PCNA and DCX immunoreactivity was observed in the olfactory bulbs, walls of the lateral ventricle, telencephalic subdivisions of the pallium and subpallium, diencephalon, mesencephalon and cerebellum. Generally, the olfactory bulbs and telencephalon had more PCNA and DCX cells than other regions. Two proliferative hotspots were evident in the dorsal and ventral poles of the lateral ventricles. PCNA- and DCX-immunoreactive cells migrated radially from the walls of the lateral ventricle into the parenchyma. In most telencephalic regions, the density of PCNA- and DCX-immunoreactive cells increased from rostral to caudal, except in the mesopallium where the density decreased from rostral to middle levels and then increased caudally. DCX immunoreactivity was more intense in fibres than in cell bodies and DCX-immunoreactive cells included small granular cells, fusiform bipolar cells, large round and or polygonal multipolar cells. The similarity in the distribution of proliferating cells and new neurons in the telencephalon of the two breeds of pigeons may suggest that adult neurogenesis is a conserved trait as an ecological adaptation irrespective of body size.

  3. El puerto y la vinculación entre lo local y lo global

    Directory of Open Access Journals (Sweden)

    Carlos Martner Peyrelongue

    1999-09-01

    Full Text Available Los puertos fueron espacios poco relevantes durante el periodo en que privó el modelo de desarrollo "hacia adentro" basado en la sustitución de importaciones. De allí, el desinterés por su estudio dentro de los distintos campos de las ciencias sociales, inclusive en áreas muy cercanas con esta temática, como el análisis regional y la geografía económica. Sin embargo, a raíz de la reciente reestructuración del sistema mundial capitalista, estos espacios litorales han adquirido mayor relevancia al constituirse en nodos principales de articulación de redes productivas crecientemente globalizadas. Precisamente, en este artículo se pretende hacer un análisis de las implicaciones espaciales y temporales del rol recientemente asumido por los puertos en la articulación de extensas redes de producción-distribución, las cuales redefinen los vínculos entre lo local y lo global, pero a la vez generan vastos espacios de exclusión. Aquí, los conceptos como "espacio de flujos", "territorio de redes" y " el espacio-tiempo simultáneo" de la globalización, que rescatan, desde el análisis regional y la geografía económica, la tradición estructural-sistémica desarrollada en las ciencias sociales principalmente por Braudel y Wallerstein, resultan relevantes por su fuerza explicativa en momentos de fuerte reestructuración del ámbito portuario y, en general, de la economía-mundo capitalistaPorts used to be spaces of little interest during the "inwards" development model based on imports substitution. Hence, the indifference for its study in the diverse fields of social science, even in areas too close to this topic, as regional analysis and economical geography. However, due to the recent restructure of global capitalism system, these coast line spaces have got more importance at establishing themselves as main hubs in the articulation of productive networks recently globalized. Precisely, this article intends to analyze space and

  4. La enseñanza y la educación del cuerpo infantil: Cuando el lenguaje intercede con "lo vivo"

    Directory of Open Access Journals (Sweden)

    Cecilia Seré Quintero

    2011-11-01

    Full Text Available En el presente trabajo se realiza un abordaje que supone problematizar las configuraciones discursivas modernas propias del campo de la didáctica y de la pedagogía modernas en su vinculación con la dimensión corporal de la infancia. Considerar que el lenguaje opera en lo subjetivo de la infancia introduciendo una dimensión no-gobernable requiere repensar las implicancias de enseñar y educar el cuerpo en el ámbito escolar. No hay, pues, relación de exclusión entre el lenguaje, la enseñanza, la educación y el cuerpo. Enseñanza y educación son siempre instancias de palabra, indisociables de lo corporal y por lo tanto sujetas a la estructuración del lenguaje. Allí lo corporal queda indefectiblemente capturado, en tanto el cuerpo no es aquello que discurre únicamente en su dimensión imaginaria, sino que es articulado tras la contingencia propia de la inestabilidad de lo simbólico y la imposible captura de lo real. La educación del cuerpo es, entonces, el conjunto estructurado de dispositivos que no hacen más que bordear la inconsistencia de lo humano [al tiempo que la produce

  5. Virginia gutierrez de pineda: ve lo que todos han visto pero piensa lo Que otros no han pensado

    Directory of Open Access Journals (Sweden)

    Ligia Echeverri Ángel

    1997-04-01

    Full Text Available Este ensayo pretende hilvanar las cualidades innatas con las condiciones ambientales y educativas que afianzaron y respaldaron el surgimiento de una personalidad científica de las ciencias sociales y humanas, en una época cuando las mujeres tenían bloqueado el acceso a la formación en este campo.Por cuestión de espacio, apenas sí se menciona lo más destacado de la creación científica y literaria de Virginia Gutiérrez de Pineda, privilegiando aquellas contribuciones que han producido mayor impacto en las comunidades académicas nacional e internacional.

  6. Otra vez hablando de lo que habla

    OpenAIRE

    García Calvo, Agustín

    2011-01-01

    Reconociendo la contradicción que se da entre la lengua DE que se habla y la lengua EN que se habla, se trata de hacer sentir al lector la inmensa complejidad de la máquina de la lengua, que nos pasa casi enteramente desapercibida. Para entender esto es preciso darse cuenta de que el artilugio de la lengua se encuentra en un nivel sub-conciente, común, que no pertenece a nadie. Hablamos así de bien gracias a que no nos damos cuenta de lo que hacemos cuando hablamos. Esto se ilustra negativame...

  7. PRIMEROS ANTECEDENTES SOBRE LO INFINITAMENTE PEQUEÑO

    Directory of Open Access Journals (Sweden)

    Iván Castro Chadid

    2004-06-01

    Full Text Available El concepto matemático de lo infinitamente pequeño fue fruto de un arduo trabajo de la humanidad a través de muchos siglos, los primeros logros al respecto se deben fundamentalmente a los desarrollos obtenidos por los atomistas cuyos principales exponentes fueron Demócrito, Zenón, Arquímedes en la antigua Grecia y Galileo, Cavalieri en el Renacimiento. En este artículo se hace una presentación de los métodos empleados por Arquímedes y Cavalieri para abordar este problema desde su propia perspectiva.

  8. Lo social, lo comunitario y lo individual en las estrategias de prevención “social” del delito en Argentina (2003-2008 (“Social”, “community” and “individual” in social crime prevention strategies in Argentina (2003-2008

    Directory of Open Access Journals (Sweden)

    Emilio J. Ayos

    2012-07-01

    Full Text Available El artículo aborda las construcciones de lo individual, lo comunitario y lo social que emergen en la confluencia de una intervención de prevención “social” del delito y una política social asistencial en Argentina. Es producto de una investigación mayor que se propone indagar acerca de la relación entre las definiciones de pobreza y delito y las estrategias de intervención asociadas a las mismas en la articulación entre los programas Comunidades Vulnerables y de Empleo Comunitario. Desde un enfoque metodológico cualitativo, se argumentará que la implementación de dicha estrategia de prevención social del delito, en su vinculación con una política asistencial, describirá una tendencia hacia la comunitarización de su intervención a partir de construir una territorialización segmentada, y hacia la individualización, fundamentalmente en los mecanismos preventivos propuestos.ABSTRACTThis article focuses at the analysis of the tensions that emerge from the meeting of a social crime prevention strategy and a social policy in Argentina. These tensions turn run the constructions of the idea of “social”, “community” and “individual”. This analysis is part of a bigger research which has as a general objective the exploration of the association between the definitions of “poverty” and “crime” and the intervention strategies that emerge from that intersection, specifically in the articulation between two programs: “Vulnerable Communities” and “Community Employment”. Using a qualitative methodology, it will be argued that the implementation of such crime social prevention strategy, in its association with a welfare policy, would describe a trend characterized by the communitisation, from building a segmented territorialization, and the individualization, mainly in the preventive mechanisms proposed, of the strategy itself.

  9. Approximate N3LO Higgs-boson production cross section using physical-kernel constraints

    International Nuclear Information System (INIS)

    Florian, D. de; Moch, S.; Hamburg Univ.; Vogt, A.

    2014-08-01

    The single-logarithmic enhancement of the physical kernel for Higgs production by gluon-gluon fusion in the heavy top-quark limit is employed to derive the leading so far unknown contributions, ln 5,4,3 (1-z), to the N 3 LO coefficient function in the threshold expansion. Also using knowledge from Higgs-exchange DIS to estimate the remaining terms not vanishing for z=m 2 H /s→1, these results are combined with the recently completed soft+virtual contributions to provide an uncertainty band for the complete N 3 LO correction. For the 2008 MSTW parton distributions these N 3 LO contributions increase the cross section at 14 TeV by (10±2)% and (3±2.5)% for the standard choices μ R =m H and μ R =m H /2 of the renormalization scale. The remaining uncertainty arising from the hard-scattering cross sections can be quantified as no more than 5%, which is smaller than that due to the strong coupling and the parton distributions.

  10. Que se vea lo que se oye: a vueltas con los fonemas y las letras

    Directory of Open Access Journals (Sweden)

    Gómez del Estal Villarino, Mario

    2011-03-01

    Full Text Available Partiendo de lo que el refrán “La letra con sangre entra” viene a decir a quien se deje escucharlo, se abre una descripción de las diferencias radicales que se dan entre aprender a hablar y aprender a escribir. La relación entre ambas actividades no se puede entender sin analizar la tan extendida perversión que supone hablar lo que se escribe en vez de escribir lo que se habla. A continuación, se detallan algunos de los síntomas más frecuentes de dicha perversión, caracterizados todos por la intromisión de la conciencia en terrenos donde lo único que hace es estorbar, en especial la pronunciación pedantesca de ciertos finales silábicos o de palabra, como en traNSporte, aBStraKción, óPtico, oBjeto, fúTbol, libertaD, diGno o fraK, así como las distintas deformaciones que sufren las palabras que la ortografía académica prescribe que se escriban con la letra equis.

  11. Lo fantástico y la memoria histórica en Rivas

    Directory of Open Access Journals (Sweden)

    Frauke Bode

    2015-07-01

    Full Text Available A partir de tres ejemplos, En salvaje compañía (1994, El lápiz del carpintero (1998 y Los libros arden mal (2006, esta contribución pretende determinar la función de ‘lo fantástico’ en las novelas de Ma-nuel Rivas, con respecto a la memoria cultural de un evento traumático como la Guerra Civil y el fran-quismo. La argumentación parte de la hipótesis de que lo ‘real maravilloso gallego’ ofrece una estruc-tura particularmente apta para hablar de la Guerra Civil al darles a los muertos un espació ficticio de acción

  12. Implicaciones del marco teórico de lo imaginario en la Psicología Social

    Directory of Open Access Journals (Sweden)

    Teresa Aracena Vicente

    2015-03-01

    Full Text Available En el presente estudio abordaremos dos de las principales concepciones sobre los mecanismos implicados en la construcción significativa del mundo. Hablamos de la Teoría de las Representaciones Sociales (TRS, formulada desde la psicología, y del marco teórico de lo imaginario, formulado principalmente desde la antropología y la filosofía. Procederemos exponiendo, primero, la TRS y, posteriormente, los acercamientos al marco teórico de lo imaginario desde diferentes disciplinas, para señalar las aportaciones que ofrece este último a la psicología social, aportaciones éstas que complementan las de la TRS. Así, este estudio tiene como objetivos realizar un análisis teórico de la TRS y del marco teórico de lo imaginario y especificar las contribuciones e implicaciones del marco teórico de lo imaginario a la psicología social (y, más concretamente, a la psicología cultural de modo a observar cómo el concepto de imaginario social incluye y trasciende al de representación social(RS. Consideraremos las implicaciones ontológicas, epistemológicas, metodológicas y para la salud de la utilización del marco teórico de lo imaginario en la psicología cultural. En este sentido, propondremos la adopción de dicho concepto por la psicología, considerando que el mismo es fundamental por su capacidad explicativa, comprensiva, interpretativa y crítica.

  13. Korterelamu : Aleksandri 35, Tartu = Apartment building : Aleksandri 35, Tartu / Margit Mutso

    Index Scriptorium Estoniae

    Mutso, Margit, 1966-

    2009-01-01

    Karlova linnaosas asuva korterelamu arhitektuursest lahendusest, žürii hinnang kultuurkapitali aastapreemiale esitatud elamule. Arhitektid Maarja Kask, Ralf Lõoke, Karli Luik ja Kristiina Arusoo (Salto AB)

  14. Investigation of LO-leakage cancellation and DC-offset influence on flicker-noise in X-band mixers

    DEFF Research Database (Denmark)

    Michaelsen, Rasmus; Johansen, Tom; Tamborg, Kjeld

    2012-01-01

    This paper describes an investigation on the influences in 1/f noise of LO-leakage and DC-offset cancellation for X-band mixers. Conditions for LO-leakage cancellation and zero DC-offset is derived. Measurements on a double balanced diode mixer shows an improvement in noise figure from 14.3dB to ...

  15. Experiencias y vivencias del embarazo en adolescentes explicadas desde lo social

    Directory of Open Access Journals (Sweden)

    VIRGINIA INÉS SOTO

    2008-12-01

    Full Text Available Describir y explicar desde lo social las experiencias y vivencias de las adolescentes embarazadas, como el contexto para una provisión de cuidado integral, individualizado y contextualizado, es necesario para la práctica de enfermería, y tratar este fenómeno como hecho social exige asimilar las realidades del mundo social a las del mundo exterior, adoptando el principio de que se ignora por completo lo que son, reconociendo que el hecho social no puede ser modificado por un simple decreto de la voluntad, sino que exige un esfuerzo laborioso, considerando la experiencia desde los ámbitos interno y externo. Presentar un marco conceptual y referencial desde lo social, interpretando la experiencia y la vivencia, permitirá a la enfermera comprender este fenómeno cuando dichas experiencias involucran o ponen en riesgo la salud de la adolescente gestante, máxime que la práctica clínica de enfermería se ha estudiado primariamente desde una perspectiva sociológica, pues comparte una importancia social destacada y un fin social, centrada en facilitar, apoyar y atender a los individuos, familias, comunidades y/o sociedades para realzar, mantener y recuperar la salud, y reducir y aliviar los efectos de la enfermedad, con el resultado explícito de promover la calidad de vida relacionada con la salud dentro de contextos ambientales inmediatos y más amplios.

  16. GPS-free Geolocation using LoRa in Low-Power WANs

    DEFF Research Database (Denmark)

    Fargas, Bernat Carbones; Petersen, Martin Nordal

    2017-01-01

    Internet of Things (IoT) has been growing over the last few years in multiple applications and due to the high need GPS for tracking capabilities, an innovative opportunity arises. This paper reports on a design and implementation of a LoRaWAN tracking system which is capable exploiting transmitted...

  17. Ser lo mismo, ser diferente: contra la masificación

    OpenAIRE

    Saldarriaga Roa, Alberto

    2005-01-01

    La sociedad moderna se ha configurado, en los dos últimos siglos, como una sociedad de masas. Esto parece ser una condición sine qua non de su estructura y operatividad. La masificación se manifiesta no sólo en el comportamiento social sino también en el

  18. Wide-field two-photon microscopy with temporal focusing and HiLo background rejection

    Science.gov (United States)

    Yew, Elijah Y. S.; Choi, Heejin; Kim, Daekeun; So, Peter T. C.

    2011-03-01

    Scanningless depth-resolved microscopy is achieved through spatial-temporal focusing and has been demonstrated previously. The advantage of this method is that a large area may be imaged without scanning resulting in higher throughput of the imaging system. Because it is a widefield technique, the optical sectioning effect is considerably poorer than with conventional spatial focusing two-photon microscopy. Here we propose wide-field two-photon microscopy based on spatio-temporal focusing and employing background rejection based on the HiLo microscope principle. We demonstrate the effects of applying HiLo microscopy to widefield temporally focused two-photon microscopy.

  19. Denial-of-Service attacks on 6LoWPAN-RPL networks: Issues and practical solutions

    OpenAIRE

    Anass RGHIOUI; Anass KHANNOUS; Mohammed BOUHORMA

    2014-01-01

    RPL (Routing Protocol for Low-power and lossy networks) is a specific routing protocol designed to optimize 6LoWPAN (IPv6 over Low power Wireless Personal Area Network) operation. As 6LoWPAN suffers from resource constraints on battery, processor, memory and bandwidth, it affects the performance of the RPL protocol. From security point of view, this will make RPL vulnerable to several threats directly or indirectly. Thus, cryptographic systems are not sufficient to protect the RPL from intern...

  20. Los pasiegos. La analogía salvaje y lo salvaje de la analogía

    Directory of Open Access Journals (Sweden)

    JAIME DE LA CALLE VALVERDE

    2007-01-01

    -entendiendo salvaje como un pensamiento humano prístino-: por un lado en sus relaciones con el racionalismo (¿emerge la analogía desde el racionalismo?, ¿qué relación guarda con éste?, ¿su nacimiento es resultado de una función «natural»? y por otro sobre la naturaleza social de lo salvaje a partir de las bases sociales que lo producen. Es decir, se rastrea lo que de salvaje tiene la analogía, si la analogía es o no una función ahistórica y asocial del intelecto humano. No se examina todo el complejo analógico de los pasiegos, únicamente aquél que establece relaciones homólogas entre las vacas y el entorno.

  1. Sociālo tīklu lietotnes izveide izmantojot NoSQL

    OpenAIRE

    Molotoks, Askolds

    2013-01-01

    Maģistra darbā "Sociālo tīklu lietotnes izveide izmantojot NoSQL" tiek izveidotā lietotne, izmantojot NoSQL datu bāzi. NoSQL – ne tikai SQL ir jauna datu bāzes pieeja, kas ļauj izmantot dažādus veidus datu glabāšanai. Maģistra darbā tiek analizētas izstrādes pieejas, izmatojot SQL un NoSQL datu bāzes tehnoloģijas. Maģistra darbā ir iekļautas nodaļas, kurās ir aprakstīta sociālo tīklu vēsture, sociālie tīkli un lietotnes. Ir aprakstītas NoSQL atšķirības no SQL, kā arī apskatītas NoSQL datu ...

  2. Estradiol agonists inhibit human LoVo colorectal-cancer cell proliferation and migration through p53.

    Science.gov (United States)

    Hsu, Hsi-Hsien; Kuo, Wei-Wen; Ju, Da-Tong; Yeh, Yu-Lan; Tu, Chuan-Chou; Tsai, Ying-Lan; Shen, Chia-Yao; Chang, Sheng-Huang; Chung, Li-Chin; Huang, Chih-Yang

    2014-11-28

    To investigate the effects of 17β-estradiol via estrogen receptors (ER) or direct administration of ER agonists on human colorectal cancer. LoVo cells were established from the Bioresource Collection and Research Center and cultured in phenol red-free DMEM (Sigma, United States). To investigate the effects of E2 and/or ER selective agonists on cellular proliferation, LoVo colorectal cells were treated with E2 or ER-selective agonists for 24 h and 48 h and subjected to the MTT (Sigma) assay to find the concentration. And investigate the effects of E2 and/or ER selective agonists on cell used western immunoblotting to find out the diversification of signaling pathways. In order to observe motility and migration the wound healing assay and a transwell chamber (Neuro Probe) plate were tased. For a quantitative measure, we counted the number of migrating cells to the wound area post-wounding for 24 h. We further examined the cellular migration-regulating factors urokinase-type plasminogen activator (u-PA), tissue-type plasminogen activator (t-PA) and matrix metalloproteinase (MMP)-9 in human LoVo cells so gelatin zymography that we used and gelatinolytic activity was visualized by Coomassie blue staining. And these results are presented as means ± SE, and statistical comparisons were made using Student's t-test. The structure was first compared with E2 and ER agonists. We then treated the LoVo cells with E2 and ER agonists (10(-8) mol/L) for 24 h and 48 h and subsequently measured the cell viability using MTT assay. Our results showed that treatment with 17β-estradiol and/or ER agonists in human LoVo colorectal cancer cells activated p53 and then up-regulated p21 and p27 protein levels, subsequently inhibiting the downstream target gene, cyclin D1, which regulates cell proliferation. Taken together, our findings demonstrate the anti-tumorigenesis effects of 17β-estradiol and/or ER agonists and suggest that these compounds may prove to be a potential alternative

  3. ENTRE LO INDIO, LO NEGRO Y LO INCAICO: LA JERARQUÍA ESPACIAL DE LA DIFERENCIA EN EL PERÚ MULTICULTURAL

    Directory of Open Access Journals (Sweden)

    Shane Greene

    2010-01-01

    Full Text Available Este artículo examina los problemas encontrados por un programa estatal sobre multiculturalismo afro-indígena en Perú dentro del marco de la historia intelectual de la nación, sus regiones, y las ideologías que las gobiernan. En vez de presentar un recuento comparativo sobre las políticas aplicadas a afro-descendientes e indígenas a nivel regional Latinoamericano enfatizando «raza» versus «cultura» arguyo que se debe prestar más atención a las formas en las que el multiculturalismo afro-indígena se «peruaniza» en el proceso de la expansión global/regional. El caso peruano es particularmente interesante por la forma en la que el Estado separa sus sujetos multiculturales por región (reconociendo los andinos, amazónicos, y afroperuanos que son implícitamente de la costa. También analizo cómo la larga fascinación de la nación con la figura del inca permite que los andinos tengan un estatus de elite indígena dentro de la imaginación multicultural. La influencia histórica de lo que llamo el «apartado inca» sugiere posibilidades para poder comparar todos aquellos sujetos definidos como no andinos / no incas, y particularmente para los afroperuanos e indígenas amazónicos en este contexto.

  4. Las modalidades deficientes de la relación consigo mismo: reconstrucción y análisis de la existencia ética en O lo uno o lo otro de Kierkegaard

    Directory of Open Access Journals (Sweden)

    Rodríguez, Pablo Uriel

    2017-07-01

    Full Text Available Este artículo se propone reconstruir la teoría de la elección del sí mismo en O lo uno o lo otro (Segunda Parte de Kierkegaard. La teoría ética de la auto-elección contiene (1 una crítica de la auto-comprensión del individuo moderno y (2 describe las patologías de la vida individual. Kierkegaard distingue dos modelos incorrectos de auto-relación, que implican un tipo de autocosificación existencial: (1 auto-creación y (2 auto-conocimiento.

  5. Scanning thin-sheet laser imaging microscopy (sTSLIM) with structured illumination and HiLo background rejection.

    Science.gov (United States)

    Schröter, Tobias J; Johnson, Shane B; John, Kerstin; Santi, Peter A

    2012-01-01

    We report replacement of one side of a static illumination, dual sided, thin-sheet laser imaging microscope (TSLIM) with an intensity modulated laser scanner in order to implement structured illumination (SI) and HiLo image demodulation techniques for background rejection. The new system is equipped with one static and one scanned light-sheet and is called a scanning thin-sheet laser imaging microscope (sTSLIM). It is an optimized version of a light-sheet fluorescent microscope that is designed to image large specimens (HiLo image demodulation. The static light-sheet has a thickness of 3.2 µm; whereas, the scanned side has a light-sheet thickness of 4.2 µm. The scanned side images specimens with subcellular resolution (HiLo produce superior contrast compared to both the uniform static and scanned light-sheets. HiLo contrast was greater than SI and is faster and more robust than SI because as it produces images in two-thirds of the time and exhibits fewer intensity streaking artifacts. 2011 Optical Society of America

  6. Efectos radicales de un encuentro, lo contingente, lo inevitable/Radical effects of an encounter, the contingent, the inevitable

    Directory of Open Access Journals (Sweden)

    Alba Fernández

    2010-03-01

    Full Text Available A partir de la pregunta por la posibilidad del diálogo entre psicoanálisis y filosofía, los autores se proponen un recorrido por algunas de las cuestiones que dicha relación auspicia. Asumiendo la imposibilidad de homogeneidad de una filosofía y de un psicoanálisis, se problematiza entorno a lo aleatorio del encuentro posible, a la vez que se presume lo ineluctable del mismo. Tomando los discursos que de un campo y otro hacen referencia a la utopía, pero también a la posibilidad de esta conjunción con el extranjero, los autores subrayan la importancia del amor. El amor será el operador que propicie la radical singularidad de un encuentro, del cual se saldrá no beneficiado ni oprimido, tal vez más inseguro, más delicado, más quebradizo, pero lleno de esperanzas que aún no tienen nombre. From the question based on the possibility of the dialogue between psychoanalysis and philosophy, the authors have set out a route in which some of the questions of such relation foster. Assuming that the impossible homogeneity between a philosophy and a psychoanalysis will give problematic environment to the possible random encounter, in turn suppose the ineluctable of itself. Taking the speeches from one field and from another, both make reference to the utopia, but also to the possibility of this conjunction with the foreigner; could emphasize the importance of love according to authors. Love will be the conductor which will encourage the radical singularity of an encounter, from which not only there will not be no favored, but also no oppressed. However, it could be more unsecured, more delicate, more fragile, but full of hope that have no name yet.

  7. Baltijas birža - ēka, kas zaudējusi savu vietu / Carl-Dag Lige

    Index Scriptorium Estoniae

    Lige, Carl-Dag, 1982-

    2016-01-01

    Londonis asunud Balti börsihoone ajaloost. Kineetilisest ruumiinstallatsioonist "Face-to-face" (autorid Maarja Kask, Ralf Lõoke arhitektuuribüroost Salto Arhitektid, Neeme Külm) Eesti Arhitektuurimuuseumis

  8. Praha biennaalist - Veneetsia kontekstis / Jaan Elken

    Index Scriptorium Estoniae

    Elken, Jaan, 1954-

    2007-01-01

    Praha biennaalist, korraldajad Giancarlo Politi ja Helena Kontova. Eestit esindasid Merike Estna, Alice Kask, Mark Raidpere. 52. Veneetsia biennaalist, kuraator Robert Storr. Eestit esindas Marko Mäetamm

  9. High-contrast 3D image acquisition using HiLo microscopy with an electrically tunable lens

    Science.gov (United States)

    Philipp, Katrin; Smolarski, André; Fischer, Andreas; Koukourakis, Nektarios; Stürmer, Moritz; Wallrabe, Ulricke; Czarske, Jürgen

    2016-04-01

    We present a HiLo microscope with an electrically tunable lens for high-contrast three-dimensional image acquisition. HiLo microscopy combines wide field and speckled illumination images to create optically sectioned images. Additionally, the depth-of-field is not fixed, but can be adjusted between wide field and confocal-like axial resolution. We incorporate an electrically tunable lens in the HiLo microscope for axial scanning, to obtain three-dimensional data without the need of moving neither the sample nor the objective. The used adaptive lens consists of a transparent polydimethylsiloxane (PDMS) membrane into which an annular piezo bending actuator is embedded. A transparent fluid is filled between the membrane and the glass substrate. When actuated, the piezo generates a pressure in the lens which deflects the membrane and thus changes the refractive power. This technique enables a large tuning range of the refractive power between 1/f = (-24 . . . 25) 1/m. As the NA of the adaptive lens is only about 0.05, a fixed high-NA lens is included in the setup to provide high resolution. In this contribution, the scan properties and capabilities of the tunable lens in the HiLo microscope are analyzed. Eventually, exemplary measurements are presented and discussed.

  10. Updated Higgs cross section at approximate N3LO

    International Nuclear Information System (INIS)

    Bonvini, Marco; Ball, Richard D.; Marzani, Simone

    2014-04-01

    We update our estimate of the cross section for Higgs production in gluon fusion at next-to-next-to-next-to-leading order (N 3 LO) in α s in view of the recent full computation of the result in the soft limit for infinite top mass, which determines a previously unknown constant. We briefly discuss the phenomenological implications. Results are available through the updated version of the ggHiggs code.

  11. Kuues Pärnu rahvusvaheline koorifestival stardib

    Index Scriptorium Estoniae

    2006-01-01

    Pärnu rahvusvahelise koorifestivali avakontserdist 25. mail, noortekooride galakontserdist "Meie tuleme!" 26. mail ja rahvalaulukonkursist "Õhtu pealt on ilus laulda kas'ke" 27. mail Pärnu Kontserdimajas

  12. Intrigeeriv idee paneb mootori käima / Signe Sillasoo

    Index Scriptorium Estoniae

    Sillasoo, Signe

    2011-01-01

    Salto Arhitektuuribüroos (Maarja Kask, Ralf Lõoke, Karli Luik) projekteeritud hoonetest, koostööst klientidega, konkurssidel osalemisest, võidetud preemiatest. Pikemalt Tallinnasse püstitatud Põhuteatrist

  13. On Applicability of Network Coding Technique for 6LoWPAN-based Sensor Networks.

    Science.gov (United States)

    Amanowicz, Marek; Krygier, Jaroslaw

    2018-05-26

    In this paper, the applicability of the network coding technique in 6LoWPAN-based sensor multihop networks is examined. The 6LoWPAN is one of the standards proposed for the Internet of Things architecture. Thus, we can expect the significant growth of traffic in such networks, which can lead to overload and decrease in the sensor network lifetime. The authors propose the inter-session network coding mechanism that can be implemented in resource-limited sensor motes. The solution reduces the overall traffic in the network, and in consequence, the energy consumption is decreased. Used procedures take into account deep header compressions of the native 6LoWPAN packets and the hop-by-hop changes of the header structure. Applied simplifications reduce signaling traffic that is typically occurring in network coding deployments, keeping the solution usefulness for the wireless sensor networks with limited resources. The authors validate the proposed procedures in terms of end-to-end packet delay, packet loss ratio, traffic in the air, total energy consumption, and network lifetime. The solution has been tested in a real wireless sensor network. The results confirm the efficiency of the proposed technique, mostly in delay-tolerant sensor networks.

  14. SOBRE LA TENSIÓN ENTRE ONTOLOGÍA E HISTORIA: EL SER DE LO POLÍTICO COMO DIFERENCIA

    Directory of Open Access Journals (Sweden)

    Nuria Yabkowski

    2010-12-01

    Full Text Available Resumen Proponer una ontología de lo político implica preguntarse por la relación que se establece entre ontología e historia. Si ambos términos se presentan como opuestos y excluyentes entre sí, entonces tendríamos que aceptar la posibilidad de que lo político pueda concebirse con plena autonomía de un contexto histórico determinado. Aquí, por el contrario, se trata de pensar una ontología de lo político que mantenga con la historia una relación distinta o, en otras palabras, una ontología política materialista. Para abordar esta problemática partimos de la obra de Nicos Poulantzas, para dar cuenta con ella de las dificultades que enfrentaba un marxismo en crisis a la hora de pensar la autonomía de la política. El posmarxismo enfrenta estos dilemas y elabora algunas respuestas sobre la relación entre ontología e historia. Para exponer lo que muchos de estos desarrollos comparten, recurrimos a la interpretación de Oliver Marchart sobre lo que él denomina el pensamiento político posfundacional (Cf. Lefort, Badiou, Laclau, Rancière. Luego recurrimos a los postulados de Gilles Deleuze, porque con ellos podemos desplazar de otra forma la tradicional antinomia entre ontología e historia. Entonces, asumiendo que el Ser de lo político es un ser que siempre se dice de la diferencia, nos abocamos a analizar críticamente las teorizaciones de Ernesto Laclau sobre la política y su forma hegemónica. Finalmente, la relación que propone Benjamín Arditi entre espectro y populismo permite pensar nuevas relaciones entre la ontología y la historia, lo político y la diferencia, dinamizando los conceptos.

  15. “Imagen: aquello de lo que estoy excluido”

    OpenAIRE

    Barreiros, Raúl

    2007-01-01

    Fil: Barreiros, Raúl. Universidad Nacional de las Artes. Área Transdepartamental de Crítica de Artes; Argentina No le cree a Kundera pero sí a Barthes y extiende sus fragmentos discursivos hasta que alcanzan al arte. “El hombre lo vive todo sin preparación. Como si un actor representase sin ensayo. ¿Qué valor puede tener la vida si el primer ensayo es ya la vida misma? Por eso la vida parece un boceto. Pero ni “boceto” es la palabra precisa, porque un boceto e...

  16. A comparative analysis of the categorization of multidimensional stimuli: I. Unidimensional classification does not necessarily imply analytic processing; evidence from pigeons (Columba livia), squirrels (Sciurus carolinensis), and humans (Homo sapiens).

    Science.gov (United States)

    Wills, A J; Lea, Stephen E G; Leaver, Lisa A; Osthaus, Britta; Ryan, Catriona M E; Suret, Mark B; Bryant, Catherine M L; Chapman, Sue J A; Millar, Louise

    2009-11-01

    Pigeons (Columba livia), gray squirrels (Sciurus carolinensis), and undergraduates (Homo sapiens) learned discrimination tasks involving multiple mutually redundant dimensions. First, pigeons and undergraduates learned conditional discriminations between stimuli composed of three spatially separated dimensions, after first learning to discriminate the individual elements of the stimuli. When subsequently tested with stimuli in which one of the dimensions took an anomalous value, the majority of both species categorized test stimuli by their overall similarity to training stimuli. However some individuals of both species categorized them according to a single dimension. In a second set of experiments, squirrels, pigeons, and undergraduates learned go/no-go discriminations using multiple simultaneous presentations of stimuli composed of three spatially integrated, highly salient dimensions. The tendency to categorize test stimuli including anomalous dimension values unidimensionally was higher than in the first set of experiments and did not differ significantly between species. The authors conclude that unidimensional categorization of multidimensional stimuli is not diagnostic for analytic cognitive processing, and that any differences between human's and pigeons' behavior in such tasks are not due to special features of avian visual cognition.

  17. Del padre al síntoma: una articulación de la particular y lo colectivo en Freud.

    Directory of Open Access Journals (Sweden)

    Pilar Posada.

    1998-06-01

    Full Text Available En Tótem y tabú, Freud conecta lo particular y lo colectivo por la vía de la función del padre. Tres elementos -el desplazamiento, la ambivalencia y la identificación- presentes en la neurosis individual (en la zoofobia y en el totemismo, son el fundamento de esta construcción teórica que pasa de lo individual a lo social. Allí donde opera el padre se produce siempre un síntoma, y es justamente por la vía del síntoma que se produce el vínculo social. Dos rostros, dos funciones, un modo de operar como bisagra se vislumbra en el síntoma: une y separa, congrega y disgrega, establece la comunidad y es el principio de la diferencia.

  18. BFM. Maja lava taga = BMF. The building behind the scenes / Triin Ojari

    Index Scriptorium Estoniae

    Ojari, Triin, 1974-

    2012-01-01

    Balti Filmi- ja Meediakooli uuest hoonest. Projekteerija: Salto Arhitektid. Autorid: Maarja Kask, Karli Luik, Ralf Lõoke, Pelle-Sten Viiburg. Sisekujundus: Ville Lausmäe. Projekt: 2009-2011, valmis: 2012

  19. Lo que son mujeres en los escenarios

    Directory of Open Access Journals (Sweden)

    González Cañal, Rafael

    2007-06-01

    Full Text Available In this article I review the publishing and stage trajectory of one of Rojas Zorrilla’s most significant plays: Lo que son mujeres. As well as collecting a list of the different editions, I emphasize the 1822 version by the Mexican Manuel Eduardo de Gorostiza, which started a new renaissance period for this play on stage. I also analyze the 1899 one-act version by Emilio Bobadilla. Finally, I include all the different productions between the 17th and the 19th centuries, and address the little interest aroused in the 20th century–suffice to say that it has not been staged even during these early years of the 21st century when the centenary of Rojas Zorrilla is being celebrated.En este artículo se hace un repaso detallado de la fortuna editorial y escénica de una de las obras más significativas de Rojas Zorrilla: Lo que son mujeres. Aparte de recoger las diferentes ediciones de la misma, se hace hincapié en la refundición del mexicano Manuel Eduardo de Gorostiza, estrenada en 1822, que abrió un período de cierta recuperación de este texto dramático en los escenarios. Se analiza también la refundición que llevó a cabo en un solo acto Emilio Bobadilla en 1899. Finalmente, se registran todas las representaciones conocidas de la obra desde el siglo XVII hasta el siglo XIX y se constata el poco interés que ha despertado en los escenarios del siglo XX. Incluso en los últimos años, en los que los montajes de obras de Rojas comienzan a ser más frecuentes, esta obra no ha sido todavía llevada a escena.

  20. Los dos lenguajes de las dos psicologías de lo social

    Directory of Open Access Journals (Sweden)

    Pablo Fernández Christlieb

    2005-11-01

    A la psicología social le es perfectamente adecuado el lenguaje como modo de exposición de su campo u objeto de estudio, toda vez que al lenguaje se le conoce con lenguaje, lo cual se puede observar en sus textos, argumentaciones, debates y discursos. En cambio, a la psicología colectiva, dado que las formas no se conocen con lenguaje, no le sienta bien el uso del lenguaje en el sentido discursivo y racional, sino otro modo, a saber, la literatura, que no es lenguaje sino forma hecha con palabras, lo cual, por congruencia con sus ocupaciones y sus criterios, la saca del discurso científico o académico, como un precio caro que tiene que pagar por buscar la comprensión.

  1. Overexpression of molecular chaperons GRP78 and GRP94 in CD44(hi)/CD24(lo) breast cancer stem cells.

    Science.gov (United States)

    Nami, Babak; Ghasemi-Dizgah, Armin; Vaseghi, Akbar

    2016-01-01

    Breast cancer stem cell with CD44(hi)/CD24(lo) phonotype is described having stem cell properties and represented as the main driving factor in breast cancer initiation, growth, metastasis and low response to anti-cancer agents. Glucoseregulated proteins (GRPs) are heat shock protein family chaperons that are charged with regulation of protein machinery and modulation of endoplasmic reticulum homeostasis whose important roles in stem cell development and invasion of various cancers have been demonstrated. Here, we investigated the expression levels of GRP78 and GRP94 in CD44(hi)/CD24(lo) phenotype breast cancer stem cells (BCSCs). MCF7, T-47D and MDA-MB-231 breast cancer cell lines were used. CD44(hi)/CD24(lo) phenotype cell population were analyzed and sorted by fluorescence-activated cell sorting (FACS). Transcriptional and translational expression of GRP78 and GRP94 were investigated by western blotting and quantitative real time PCR. RESULTS showed different proportion of CD44(hi)/CD24(lo) phenotype cell population in their original bulk cells. The ranking of the cell lines in terms of CD44(hi)/CD24(lo) phenotype cell population was as MCF7hi)/CD24(lo) phenotype cells exhibited higher mRNA and protein expression level of GRP78 and GRP94 compared to their original bulk cells. Our results show a relationship between overexpression of GRP78 and GRP94 and exhibiting CD44hi/CD24lo phenotype in breast cancer cells. We conclude that upregulation of GRPs may be an important factor in the emergence of CD44hi/CD24lo phenotype BCSCs features.

  2. Neototemismo y órbitas de lo imaginario: Crisis de la imagen y emergencia de la visualidad

    Directory of Open Access Journals (Sweden)

    Rodrigo Browne Sartori

    2007-01-01

    Full Text Available El presente ensayo realiza un recorrido por distintas “órbitas” de lo imaginario. Orbitas que han considerado -desde las nociones de tótem y tabú y la oposición entre el bricoleur y el ingeniero- la negatividad que implicaban los actos de sentido de devoración corporal y práctica sexual. Es decir, el totemismo -como normativa que comprende a los humanos en su cláusula sobre sexo y a los animales en su cláusula sobre alimentos- esboza a modo de tesis que esas visiones están impregnadas del régimen imaginario nictomorfo, de lo negro y lo oscuro. Como consecuencia de lo anterior, y bajo el amparo de cierto cientificismo y una pretendida capacidad “humana” (que se enfrentaría a lo salvaje y animal, se proponen teorías que intentan ocultar cualquier carga colonial-cristiana. Desde ese planteamiento inicial surge un neo totemismo posmoderno, en el cual la extensión ilimitada de las imágenes produce una crisis irreversible en los regímenes de lo imaginario.The following essay makes a route by diverse “orbits” of the imaginary. Orbits that have considered –from the notions of totem and taboo and the opposition between bricoleur and engineer—the negativity implied by the sense acts of corporal devoration and sexual practices. That is, totemism –as a regulation which includes the human beings in terms of sex and the animals in terms of food—outlines by way of thesis that these visions are pervaded by the nictomorphic imaginary regime, of the dark, of the black. As a consequence of that, and protected by certain scientism and a so-called human capacity (that would confront the animal and savage several theories that intended to hide any colonial-Christian burden are set out. From this initial approach comes up a postmodern neo-totemism, in which the unlimited extension of the images produces an irreversible crisis in the regimes of the imaginary.

  3. El problemático carácter de lo étnico

    Directory of Open Access Journals (Sweden)

    Maya Lorena Pérez Ruiz

    2007-07-01

    Full Text Available En este ensayo se discuten los problemas que existen para caracterizar la etnicidad y a losgrupos étnicos, y como aportación, se propone una definición de lo étnico que enfatiza el papelde la dominación y de la construcción social del “otro” como elementos esenciales. Se consideracomo una forma de clasificación que se ejerce desde las sociedades y grupos dominantes paradesignar a los “otros”; y que sobre la base de las diferencias culturales, establece fronteras yjustifica las relaciones de dominación que se ejercen sobre ellas. Así, lo étnico corresponderíaa un tipo específico de dominación que se sustenta y argumenta sobre la base de la diferenciacultural, y que se emplea para explicar y justificar relaciones asimétricas y de subordinación sobre grupos sociales considerados, desde el poder, como culturalmente diferentes.

  4. 3-4 gadus vecu bērnu sociālo prasmju sekmēšana lomu rotaļās

    OpenAIRE

    Cine, Annija Kristiāna

    2017-01-01

    Kvalifikācijas darba temats: 3-4 gadus vecu bērnu sociālo prasmju sekmēšana lomu rotaļās. Darba izvirzītais mērķis ir noskaidrot lomu rotaļu ietekmi uz bērnu sociālo prasmju attīstību. Mērķa sasniegšanai tika izvirzīti šādi uzdevumi: •analizēt pedagoģijas un psiholoģijas literatūras autoru atziņas par sociālo prasmju sekmēšanu 3-4 gadus veciem bērniem; •izzināt pedagoģisko un psiholoģisko literatūru par rotaļu nozīmi bērnu sociālo prasmju sekmēšanā; •noskaidrot galvenos sociālo prasmju sekmē...

  5. Torupäevik = Pipe diary / Ingrid Ruudi, Ralf Lõoke

    Index Scriptorium Estoniae

    Ruudi, Ingrid

    2008-01-01

    Eesti ekspositsioonist 11. Veneetsia arhitektuuribiennaalil. Autorid: Maarja Kask, Ralf Lõoke, Neeme Külm. Kuraator Ingrid Ruudi. Komissar Laila Põdra. Sündmustest päevikuna 14. märtsist 12. septembrini

  6. Experimental infection with highly pathogenic H5N8 avian influenza viruses in the Mandarin duck (Aix galericulata) and domestic pigeon (Columba livia domestica).

    Science.gov (United States)

    Kwon, Jung-Hoon; Noh, Yun Kyung; Lee, Dong-Hun; Yuk, Seong-Su; Erdene-Ochir, Tseren-Ochir; Noh, Jin-Yong; Hong, Woo-Tack; Jeong, Jei-Hyun; Jeong, Sol; Gwon, Gyeong-Bin; Song, Chang-Seon; Nahm, Sang-Soep

    2017-05-01

    Wild birds play a major role in the evolution, maintenance, and dissemination of highly pathogenic avian influenza viruses (HPAIV). Sub-clinical infection with HPAI in resident wild birds could be a source of dissemination of HPAIV and continuous outbreaks. In this study, the pathogenicity and infectivity of two strains of H5N8 clade 2.3.4.4 virus were evaluated in the Mandarin duck (Aix galericulata) and domestic pigeon (Columba livia domestica). None of the birds experimentally infected with H5N8 viruses showed clinical signs or mortality. The H5N8 viruses efficiently replicated in the virus-inoculated Mandarin ducks and transmitted to co-housed Mandarin ducks. Although relatively high levels of viral shedding were noted in pigeons, viral shedding was not detected in some of the pigeons and the shedding period was relatively short. Furthermore, the infection was not transmitted to co-housed pigeons. Immunohistochemical examination revealed the presence of HPAIV in multiple organs of the infected birds. Histopathological evaluation showed the presence of inflammatory responses primarily in HPAIV-positive organs. Our results indicate that Mandarin ducks and pigeons can be infected with H5N8 HPAIV without exhibiting clinical signs; thus, they may be potential healthy reservoirs of the H5N8 HPAIV. Copyright © 2017 Elsevier B.V. All rights reserved.

  7. ložník kombinovaného skládkového stroje

    OpenAIRE

    Štursa, Martin

    2013-01-01

    Tato diplomová práce se zabývá konstrukcí částí kombinovaného skládkového stroje určeného pro obsluhu skládky hnědého uhlí u uhelné elektrárny. Nejprve jsou nadefinovány základní parametry stroje a silové účinky zatěžující stroj během provozu. Práce dále obsahuje návrh ocelové konstrukce kolesového výložníku, kolesa, korečků, pohonu kolesa, hřídele, ložisek a dalších částí kolesového výložníku. Tyto součásti jsou ověřeny analytickými nebo konečnoprvkovými výpočty. This master’s thesis deal...

  8. Free-Ranging Synanthropic Birds (Ardea alba and Columba livia domestica) as Carriers of Salmonella spp. and Diarrheagenic Escherichia coli in the Vicinity of an Urban Zoo.

    Science.gov (United States)

    de Oliveira, Mirela C V; Camargo, Beatriz Q; Cunha, Marcos P V; Saidenberg, Andre Becker; Teixeira, Rodrigo H F; Matajira, Carlos E C; Moreno, Luisa Z; Gomes, Vasco T M; Christ, Ana P G; Barbosa, Mikaela R F; Sato, Maria I Z; Moreno, Andrea M; Knöbl, Terezinha

    2018-01-01

    The presence of free-ranging urban birds is a risk factor for transmitting pathogens to captive animals and humans alike, including Salmonella spp. and diarrheagenic Escherichia coli. Cloacal swabs from 156 synanthropic Great egrets (Ardea alba) and feral pigeons (Columba livia domestica) that inhabit the surroundings of an urban zoo were processed for the identification of Salmonella spp. and diarrheagenic E. coli pathotypes. Bacterial species identification and genotypic characterization employed the matrix-assisted laser desorption ionization-time of flight mass spectrometry and PCR techniques, respectively, comparing their phylogenetic profiles through amplified fragment length polymorphism (AFLP) analysis. A total of 11 birds were positive for Salmonella Typhimurium (7%) and 9 individuals (5.8%) for diarrheagenic E. coli (enteropathogenic E. coli/Shiga-toxin producing E. coli [EPEC/STEC]) strains. S. Typhimurium strains presented highly similar AFLP profiles (85-100%), whereas EPEC/STEC strains showed more polymorphism. The results show free-ranging birds as carriers for both microorganisms in a zoo environment in Brazil for the first time and suggest these species as possible sources of infection to other animals as well as exposing personnel and visitors to potential zoonotic microorganisms. The presence of carriers highlights the importance of a surveillance system and the need for preventive measures to avoid attracting growing number of synanthropic avian species.

  9. Paide linna ja gümnaasiumi spordihall = Paide city and upper secondary school sports building

    Index Scriptorium Estoniae

    2010-01-01

    Paides Aedvilja 1 asuva spordihalli sisekujundusest. Sisearhitektid Ville Lausmäe ja Kadi Karmann (VL Sisearhitektuur). Akustik Linda Madalik. Hoone arhitektid: Karli Luik, Ralf Lõoke, Maarja Kask, Jaan Port (Salto AB)

  10. Mitte ainult spordihoone = More than a Gym / Tuuli Köller

    Index Scriptorium Estoniae

    Köller, Tuuli

    2009-01-01

    Tartus 2009. a. valminud Eesti Maaülikooli spordihoonest, mille arhitektid on Maarja Kask, Karli Luik ja Ralf Lõoke, projekteerija AB Salto, sisekujundajad Katrin Kaevats ja Jaan Frank Port. Projekt 2007

  11. Eesti graafikud Krakówi triennaalil

    Index Scriptorium Estoniae

    2009-01-01

    16. septembril Poolas avatud Krakówi rahvusvahelise graafikatriennaali peanäitusel ja satelliitnäitustel esindavad Eestit Eve Kask, Ülle Marks, Benjamin Vasserman, Tiiu Prisko, Mati Veermets, Evi Tihemets

  12. Elamuslik arhitektuur : Salto AB Sõmeru keskusehoone = Salto AB experiential architecture and the Sõmeru Community Centre / Carl-Dag Lige

    Index Scriptorium Estoniae

    Lige, Carl-Dag

    2011-01-01

    Arhitektuuribüroo Salto loomingust, mille fookus on kasutaja teenimisel ning meeleheal. 2010. a. valminud Sõmeru keskusehoonest. Arhitektid Maarja Kask, Ralf Lõoke, Karli Luik, kaasautorid Kristiina Arusoo, Margit Argus. Projekt: 2004

  13. Tehases Polymer valmistatakse kummilelude asemel kultuuri / Mari Rebane

    Index Scriptorium Estoniae

    Rebane, Mari

    2005-01-01

    Tallinna Kristiine linnaosas tegutsevast loovinimeste koondumispaigast kultuuritehasest Polymer. Kultuuritehases töötavad maalikunstnik Alice Kask, skulptor Neeme Külm, teatrikunstnik Mae Kivilo, filmikunstnik Mare Raidma. Vaata ka www.kultuuritehas.ee

  14. Lo sport nelle scienze sociali: da chimera a realtà

    Directory of Open Access Journals (Sweden)

    Marco Pasini

    2013-04-01

    Full Text Available Lo sport per la sua trama profonda, le implicazioni che cristallizza, le emozioni che condensa, è fonte di interpretazione e osservatorio straordinariamente ricco per la ricerca sociale. L'obiettivo di questo numero della rivista, grazie ai contributi qualificati, trasversali, multidisciplinari ed empirici, è proprio quello di affrontare le questioni fondamentali sopra indicate attraverso differenti percorsi di senso e approcci teorico-metodologici specifici.

  15. Ah lo previdi - Arien von Mozart, Cocchi, Colla und Paisiello

    Czech Academy of Sciences Publication Activity Database

    Jonášová, Milada

    -, - (2008), s. 75-86. ISBN 9783761821107. ISSN 1861-9053. [Der junge Mozart 1756-1780. Philologie – Analyse – Rezeption. Salzburg, 01.12.2005-4.12.2005] R&D Projects: GA AV ČR 1QS900580552 Institutional research plan: CEZ:AV0Z90580513 Keywords : Ah lo previdi * Wolfgang Amadeus Mozart * G. Cocchi * G. Colla * G. Paisiello Subject RIV: AL - Art, Architecture, Cultural Heritage

  16. Lo público y lo privado: las aseguradoras y la atención médica en Mexico

    Directory of Open Access Journals (Sweden)

    Tamez Silvia

    1995-01-01

    Full Text Available Desde finales de la década de los setenta y a principios de la de los ochenta, tanto en nuestro país cuanto en la mayoría de países de América Latina, ocurrieron profundos cambios en la política sanitaria, cuya dirección apuntó fundamentalmente a un crecimiento del sector privado de la atención médica, acompañado de deterioro del sector público. Este trabajo pretende analizar, como parte del proceso privatizador de la atención médica, la evolución de los seguros médicos privados. Interesa fundamentalmente realizar un análisis de la política sectorial de salud basada en datos económicos, pero subrayando el perfil político y de modificación de las relaciones del sector con el Estado, partiendo de la hipótesis de que éste último ha asumido la función de apoyo a la expansión del mercado privado de la atención médica, enfocando el análisis a la industria de seguros médicos privados y facilitando el deterioro del sector público a través de la reducción del gasto público. Para ello se analiza el papel del Estado en las transformaciones del sector en México a partir de los principales cambios en la normatividad de la actividad aseguradora nacional. Sobre esta base se hace el análisis comparativo de la evolución de la industria aseguradora en Argentina, Brasil, Chile y México durante el período 1986-1992 profundizando el caso de México. Dentro de los principales resultados destaca que, al comparar los países mencionados, los índices Primas/PIB y Primas/per cápita en términos generales se observa crecimiento. Este crecimiento es más ascelerado en México, lo que sin duda se relaciona con lo incipiente de su proceso de privatización. Además, en México se observó que, para el período 1984-1991, las primas directas como porcentaje del PIB pasaron de 0.86% a 1.32%. En la misma línea de análisis llama la atención que el seguro de accidentes y enfermedades creció del 0.02% del PIB en 1984 a 0.11% en 1991. En

  17. Lo público y lo privado: las aseguradoras y la atención médica en Mexico

    Directory of Open Access Journals (Sweden)

    Silvia Tamez

    Full Text Available Desde finales de la década de los setenta y a principios de la de los ochenta, tanto en nuestro país cuanto en la mayoría de países de América Latina, ocurrieron profundos cambios en la política sanitaria, cuya dirección apuntó fundamentalmente a un crecimiento del sector privado de la atención médica, acompañado de deterioro del sector público. Este trabajo pretende analizar, como parte del proceso privatizador de la atención médica, la evolución de los seguros médicos privados. Interesa fundamentalmente realizar un análisis de la política sectorial de salud basada en datos económicos, pero subrayando el perfil político y de modificación de las relaciones del sector con el Estado, partiendo de la hipótesis de que éste último ha asumido la función de apoyo a la expansión del mercado privado de la atención médica, enfocando el análisis a la industria de seguros médicos privados y facilitando el deterioro del sector público a través de la reducción del gasto público. Para ello se analiza el papel del Estado en las transformaciones del sector en México a partir de los principales cambios en la normatividad de la actividad aseguradora nacional. Sobre esta base se hace el análisis comparativo de la evolución de la industria aseguradora en Argentina, Brasil, Chile y México durante el período 1986-1992 profundizando el caso de México. Dentro de los principales resultados destaca que, al comparar los países mencionados, los índices Primas/PIB y Primas/per cápita en términos generales se observa crecimiento. Este crecimiento es más ascelerado en México, lo que sin duda se relaciona con lo incipiente de su proceso de privatización. Además, en México se observó que, para el período 1984-1991, las primas directas como porcentaje del PIB pasaron de 0.86% a 1.32%. En la misma línea de análisis llama la atención que el seguro de accidentes y enfermedades creció del 0.02% del PIB en 1984 a 0.11% en 1991. En

  18. Caracterización de un proceso de autoevaluación. De lo técnico a lo investigativo

    Directory of Open Access Journals (Sweden)

    Chacón Ramírez, Silvia

    2005-09-01

    Full Text Available Este artículo es el segundo de una secuencia, cuya intención es abordar el tema de la autoevaluación. Este tópico es llevado al plano de la investigación, con el propósito de lograr una comprensión de lo que se realiza, de acuerdo con las intenciones de la autoevaluación, en el entendido de que éstas pueden variar, entre el control externo y la búsqueda del bien común. Esta última se encuentra, por estatuto, establecida en la Universidad de Costa Rica. El contexto para este artículo se ubica en el proceso de autoevaluación desarrollado en la Escuela de Formación Docente de la Facultad de Educación, de la Universidad de Costa Rica. En el primer artículo (Revista Electrónica. INIE. Vol. 5, N. 1, 2005 se ofrecían algunas premisas y cuestionamientos que develaban, en alguna medida, lo ideológico y epistemológico de un proceso de autoevaluación. En este segundo artículo, se presenta una “caracterización del modelo investigativo” ejecutado en el proceso de autoevaluación de la Escuela de Formación Docente, entre el año 2000 y el 2002. Esta presentación incluye una identificación e interpretación de las características paradigmáticas investigativas (positivistas y naturalistas del proceso autoevaluativo, una identificación de las premisas investigativas que dan sustento, la determinación de la intencionalidad de la autoevaluación, el papel desempeñado, tanto por el equipo investigador, como por los participantes. Adicionalmente se explican las características y fases del proceso metodológico. La conclusión hace referencia a los logros obtenidos, las limitaciones, para finalmente señalar lo que podría llegar a ser la autoevaluación en un contexto pertinente. This is the second article of a sequence, which intends to tackle auto evaluation issues. This topic is brought to the research field to comprehend what is being done, considering that it purposes may vary between external control and common welfare

  19. Histologic Evaluation of Critical Size Defect Healing With Natural and Synthetic Bone Grafts in the Pigeon ( Columba livia ) Ulna.

    Science.gov (United States)

    Tunio, Ahmed; Jalila, Abu; Goh, Yong Meng; Shameha-Intan; Shanthi, Ganabadi

    2015-06-01

    Fracture and bone segment loss are major clinical problems in birds. Achieving bone formation and clinical union in a fracture case is important for the survival of the bird. To evaluate the efficacy of bone grafts for defect healing in birds, 2 different bone grafts were investigated in the healing of a bone defect in 24 healthy pigeons ( Columba livia ). In each bird, a 1-cm critical size defect (CSD) was created in the left ulna, and the fracture was stabilized with external skeletal fixation (ESF). A graft of hydroxyapatite (HA) alone (n = 12 birds) or demineralized bone matrix (DBM) combined with HA (n = 12 birds) was implanted in the CSD. The CSD healing was evaluated at 3 endpoints: 3, 6, and 12 weeks after surgery. Four birds were euthanatized at each endpoint from each treatment group, and bone graft healing in the ulna CSD was evaluated by histologic examination. The CSD and graft implants were evaluated for quality of union, cortex development, and bone graft incorporation. Results showed no graft rejection in any bird, and all birds had connective tissue formation in the defect because of the bone graft application. These results suggest that bone defect healing can be achieved by a combination of osteoinductive and osteoconductive bone graft materials for clinical union and new bone regeneration in birds. The combination of DBM and HA resulted in a better quality bone graft (P < .05) than did HA alone, but there was no significant differences in cortex development or bone graft incorporation at 3, 6, or 12 weeks. From the results of this study, we conclude that HA bone grafts, alone or in combination with DBM, with external skeletal fixation is suitable and safe for bone defect and fracture treatment in pigeons.

  20. ETV teeb Tartu vanglas tantsufilmi

    Index Scriptorium Estoniae

    2005-01-01

    ETV-l valmib koos EFS-i ja Estinfilmiga kultuurikanali ARTE tellimusel tantsufilm "Teine" : režissöör Rene Vilbre : stsenarist Teet Kask : produtsent Heidi Pruuli : koreograaf ja peaoaline Helena Jonsdottir

  1. Arhitektuuribürood pakkusid hipodroomi ala elamukvartaliks ümberehitamiseks julgeid projekte / Hille Tänavsuu

    Index Scriptorium Estoniae

    Tänavsuu, Hille, 1941-2014

    2008-01-01

    Tallinna Hipodroomi ala hoonestamise ideekonkursi võitsid QP Arhitektid (Tõnu Laigu, Koit Ojaliiv, Mari Rass, Asko Uukado) ja Salto Arhitektuuribüroo (Ralf Lõoke, Karli Luik, Maarja Kask). Kommenteerib Endrik Mänd

  2. Põhuteater ehk Salto arhitektide must monoliit = Straw Theatre or the Black Monolith by the Salto Architects / Risto Kozer

    Index Scriptorium Estoniae

    Kozer, Risto

    2011-01-01

    Tallinnas 2011. a. valminud NO99 Põhuteatrist. Arhitektid: Maarja Kask, Karli Luik, Ralf Lõoke, Pelle-Sten Viiburg (Salto AB). Projekt: 2010. Loodud ajaperioodiks 30.04.-01.10.2011. Skoone bastionist enne Põhuteatrit

  3. Балтийская школа кино и медиа (BFM), Таллин = Baltic Film and Media School (BFM), Tallinn / Михкель Кару

    Index Scriptorium Estoniae

    Кару, Михкель, 1983-

    2013-01-01

    Tallinna Ülikooli Balti Filmi- ja Meediakooli õppehoone "Nova". Arhitektid Maarja Kask, Karli Luik, Ralf Lõoke, Kristiina Arusoo, Pelle-Sten Viiburg (Salto Arhitektid), sisearhitektid Kadi Karmann, Ville Lausmäe, Tõnis Kalve

  4. Una mirada sobre lo popular. Reflexiones sobre el etnocentrismo en el nuevo cine argentino

    Directory of Open Access Journals (Sweden)

    Gonzalo Assusa

    2013-01-01

    Full Text Available La emergencia del nuevo cine argentino desata una serie de debates teóricos. Probablemente una de las caracterizaciones más convincentes es la que lo define como surgido de una misma crisis, no sólo en el campo cinematográfico, sino también de una misma crisis social. En el marco de un análisis sociológico de este fenómeno cultural, el presente trabajo planteará una hipótesis de lectura para algunas de las producciones audiovisuales del denominado nuevo cine argentino, en pos de establecer conceptualmente la estructuración desde el polo productivo de la elaboración imaginaria de esta crisis social, concretamente, de la emergencia de las clases populares en sus filmes. Para finalizar, se evaluará la productividad de la hipótesis de lectura basada en una definición teórica de lo popular, aplicándola a un cuerpo de filmes del realizador argentino Adrián Caetano, para concluir con reflexiones sobre la importancia del cruce entre la estructuración textual y la estructuración en el momento del consumo.

  5. Comparison of a Point-of-Care Glucometer and a Laboratory Autoanalyzer for Measurement of Blood Glucose Concentrations in Domestic Pigeons ( Columba livia domestica).

    Science.gov (United States)

    Mohsenzadeh, Mahdieh Sadat; Zaeemi, Mahdieh; Razmyar, Jamshid; Azizzadeh, Mohammad

    2015-09-01

    Biochemical analysis is necessary for diagnosis and monitoring of diseases in birds; however, the small volume of blood that can be safely obtained from small avian species often limits laboratory diagnostic testing. Consequently, a suitable methodology requiring only a small volume of blood must be used. This study was designed to compare blood glucose concentrations in domestic pigeons ( Columba livia domestica) as measured by a commercial, handheld, human glucometer and a standard autoanalyzer. During the first phase of the study, whole blood samples obtained from 30 domestic pigeons were used to measure the blood glucose concentration with a glucometer, the packed cell volume (PCV), and the total erythrocyte count (nRBC). Plasma separated from the each sample was then used to obtain the plasma glucose concentration with the autoanalyzer. During the second phase of the study, 30 pigeons were assigned to 2 equal groups (n = 15). Hypoglycemia or hyperglycemia was induced in each group by intravenous injection of insulin or glucose, respectively. Blood was collected and processed, and glucose concentrations, PCV, and nRBC were measured as previously described. Linear-regression models demonstrated a significant relationship between results measured by the glucometer and autoanalyzer results from normoglycemic (correlation coefficient [R] = 0.43, P = .02), hypoglycemic (R = 0.95; P < .001), and hyperglycemic (R = 0.81; P < .001) birds. The results of this study suggest that we can predict the real blood-glucose concentration of pigeons by using results obtained by a glucometer.

  6. Immunohistochemical localization of cocaine- and amphetamine-regulated transcript peptide (CARTp) in the brain of the pigeon (Columba livia) and zebra finch (Taeniopygia guttata).

    Science.gov (United States)

    Gutierrez-Ibanez, Cristian; Iwaniuk, Andrew N; Jensen, Megan; Graham, David J; Pogány, Ákos; Mongomery, Benjamin C; Stafford, James L; Luksch, Harald; Wylie, Douglas R

    2016-12-15

    Cocaine- and amphetamine-regulated transcript peptides (CARTp) are neuropeptides that act as neurotransmitters in the brain of vertebrates. The expression of CARTp has been characterized in teleosts, amphibians, and several mammalian species, but comparative data in reptiles and birds are nonexistent. In this study, we show the distribution of immunoreactivity against CART peptides (CARTp-ir) in the brains of two bird species: the pigeon (Columba livia) and zebra finch (Taeniopygia guttata). We found CARTp-ir cells and terminals in the brains of both, but no major differences between the two species. As in mammals, teleost fish, and amphibians, CARTp-ir terminals and cells were abundant in subpallial regions, particularly the striatum and nucleus accumbens. We also found CARTp-ir cells and terminals in the hypothalamus, and a large number of CARTp-ir terminals in the substantia nigra, ventral tegmental area, periaqueductal gray, parabrachial nucleus, and dorsal vagal complex. However, in contrast to other vertebrates, CARTp-ir was not found in the olfactory bulb. In addition there was almost no CARTp-ir in the pallium or the hippocampal formation, and little CARTp-ir in the cerebellum. The conserved expression of CARTp in the subpallium, hypothalamus, and dorsal vagal complex of birds suggests that some of the functions of CARTp, such as regulation of food intake and interactions with the social control network and mesolimbic reward system, are conserved among vertebrates. J. Comp. Neurol. 524:3747-3773, 2016. © 2016 Wiley Periodicals, Inc. © 2016 Wiley Periodicals, Inc.

  7. El simbolismo en Sólo Dios sabe, una película de Carlos Bolado

    OpenAIRE

    Aleksandra Jablonska

    2009-01-01

    Se realiza un análisis simbólico de la película Sólo Dios sabe de Carlos Bolado en los términos desarrollados, entre otros, por Eliade, Bachelard y Durand. Se observa que los símbolos no sólo aparecen en el contenido del filme -en que se relacionan sobre todo con el agua y con la lucha del Eros con Thánatos-, sino que son incorporados a su estructura narrativa, que toma la forma del viaje arquetípico del héroe. De este modo la película se inscribe dentro de la tendencia actual que cuestiona l...

  8. LA VIDA Y LO VIVO PARA LOS INGA UN ACERCAMIENTO A OTRA REALIDAD EDUCATIVA

    Directory of Open Access Journals (Sweden)

    Ángela Patricia Cárdenas Toro

    2013-07-01

    Se logró identificar unidades de información de las que se infieren que lo vivo y la vida son que son dos categorías inseparables e interconectadas y que su comprensión de mundo se articula con un cúmulo de representaciones que cobran sentido con su cosmovisión como eje transversal de la práctica. La vida y lo vivo para el indí- gena inga es poder trabajar la tierra como un elemento vivo del territorio que le proporciona el sustento y una posibilidad de pervivir física, cultural y biológicamente en el mundo de hoy.

  9. La traducción de las escritoras inglesas y la novela española del primer tercio del siglo XIX: lo histórico, lo sentimental y lo gótico

    Directory of Open Access Journals (Sweden)

    Establier Pérez, Helena

    2010-06-01

    Full Text Available Though women writing was presenting in the England of the first third of century XIX a considerable development and a maturity, the certain thing is that the list of British novelists whose works arrive at that same time at our country is limited enough. All these texts —translated into Spanish in the same dates, the second and the third decades of the century— are framed inside popular genres, with great presence of didactism and sentimentalism, elements derived from the adventures of the heroic narrative and ingredients of Gothic romances. This paper focuses in the scarce translations from English women’s novels presenting elements and narrative techniques characteristic of Gothic tales, a genre very inusual in Spain at the beginning os XIXth century, specifically the works of Sophia Lee, Regina Maria Roche and Ann Radcliffe. Its presence in the Spanish literary panorama of the first third of XIXth. Century reveals the publishing demands of a new public, more and more bourgeois and feminine, eager to consume the readings that entertained the European middle-class of his time and to have access to women writing, as much in the didactic and sentimental field like in the Gothic novel.Aunque la escritura de las mujeres presentaba en la Inglaterra del primer tercio del siglo XIX un desarrollo y una madurez considerables, lo cierto es que la lista de novelistas británicas cuyas obras llegan en esa misma época a nuestro país es bastante reducida. Todos estos textos —que en conjunto no superan la veintena y que se traducen al español en las mismas fechas, la segunda y la tercera décadas del siglo— se enmarcan dentro de géneros populares, con gran presencia del didactismo y de lo sentimental, elementos derivados de las aventuras de la narrativa heroica e ingredientes del relato gótico que destacan sobre el fondo social costumbrista de la novela inglesa dieciochesca. Este trabajo se centra fundamentalmente en las escasas traducciones de

  10. La condición del arte. Entre lo sagrado y lo profano Apuntes de sociología y antropología del arte

    OpenAIRE

    Julio Amador Bech

    2006-01-01

    En este artículo, el autor analiza el concepto de arte confrontando y cuestionando la oposición y diferencia entre la idea moderna y, con eso, profana, de arte y otra tradicional y antigua, inmersa en la sustancia de lo sagrado. A partir de las definiciones de "arte tradicional" propuestas por diversos autores, se establecen lineamientos teóricos generales para analizar de manera concreta las formas particulares en las que, en diversas culturas, el arte se sit...

  11. De lo micro a lo macro prudencial: Un análisis de la supervisión bancaria desde la econometría espacial

    OpenAIRE

    Ordóñez Herrera, Juan Sebastián

    2014-01-01

    La crisis que se desató en el mercado hipotecario en Estados Unidos en 2008 y que logró propagarse a lo largo de todo sistema financiero, dejó en evidencia el nivel de interconexión que actualmente existe entre las entidades del sector y sus relaciones con el sector productivo, dejando en evidencia la necesidad de identificar y caracterizar el riesgo sistémico inherente al sistema, para que de esta forma las entidades reguladoras busquen una estabilidad tanto individual, co...

  12. Ülikoolide pearahasüsteem pidurdab arengut / Ülo Niinemets ; intervjueerinud Sirje Tohver

    Index Scriptorium Estoniae

    Niinemets, Ülo, 1970-

    2009-01-01

    Küsimustele vastab EMÜ põllumajandus- ja keskkonnainstituudi taimefüsioloogia professor Ülo Niinemets, kes on õpetanud Saksamaal Bayreuthi, Uus-meremaal Canterbury, Hollandis Utrechti ja Ameerika Ühendriikides Havai ülikoolis

  13. Action-teater - miski pole ilus või inetu, õige või vale / Silvia Soro

    Index Scriptorium Estoniae

    Soro, Silvia

    2006-01-01

    Action-teatrist (improvisatsiooniline, füüsiline teatritreening ja etendamismeetod) ja selle loojast Ruth Zaporahist. Eestist on tema juures õppimas käinud Andres Noormets, Erni Kask ja Auli Auväärt

  14. Новый корпус средней школы, Вильянди = Extension of Viljandi Secondary School / Михкель Кару

    Index Scriptorium Estoniae

    Кару, Михкель, 1983-

    2013-01-01

    Viljandi Riigigümnaasiumi uuest hoonest. Arhitektid Maarja Kask, Karli Luik, Ralf Lõoke, Andro Mänd, Margus Tamm (Salto Arhitektid), sisekujunduse autor Pille Lausmäe. Vana maja fassaadi renoveerimisprojekti autor Eva Laarmann

  15. Põlva poisid teevad filmiga ilma / Tiia Allas

    Index Scriptorium Estoniae

    Allas, Tiia

    2000-01-01

    Põlvas elavad kooliõpilased Christian Kask ja Daniel Müntinen said Theodor Lutsu filmipäevadel parima animafilmi auhinna oma filmiga "UFO" ja kandideerisid lühimängufilmidega "Voitkajaht" ja "Snaiper" peaauhinnale

  16. Higgs boson production at hadron colliders at N3LO in QCD

    Science.gov (United States)

    Mistlberger, Bernhard

    2018-05-01

    We present the Higgs boson production cross section at Hadron colliders in the gluon fusion production mode through N3LO in perturbative QCD. Specifically, we work in an effective theory where the top quark is assumed to be infinitely heavy and all other quarks are considered to be massless. Our result is the first exact formula for a partonic hadron collider cross section at N3LO in perturbative QCD. Furthermore, our result is an analytic computation of a hadron collider cross section involving elliptic integrals. We derive numerical predictions for the Higgs boson cross section at the LHC. Previously this result was approximated by an expansion of the cross section around the production threshold of the Higgs boson and we compare our findings. Finally, we study the impact of our new result on the state of the art prediction for the Higgs boson cross section at the LHC.

  17. A dual-band LO generation system using a 40GHz VCO with a phase noise of -106.8dBc/Hz at 1-MHz

    NARCIS (Netherlands)

    Chen, Y.; Pei, Y.; Leenaerts, D.M.W.; Hanock, T.M.

    2013-01-01

    This paper demonstrates a dual-band LO generation system using a low phase noise single-band 40GHz VCO as the signal source. The LO generation system has two outputs: single-band LO1 at 20GHz and dual-band LO2 switchable between 10GHz and 15GHz. Implemented in 0.25-µm SiGe:C BiCMOS, the VCO achieves

  18. The Physical Constraints on a New LoBAL QSO at z = 4.82

    Energy Technology Data Exchange (ETDEWEB)

    Yi, Weimin; Bai, Jin-Ming [Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216 (China); Green, Richard; Fan, Xiaohui; Milne, Peter [Steward Observatory, University of Arizona, Tucson, AZ 85721-0065 (United States); Wang, Tinggui; Yang, Chenwei [CAS Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China (China); Grier, Catherine J.; Trump, Jonathan R.; Brandt, William N. [Department of Astronomy and Astrophysics and Institute for Gravitation and the Cosmos, The Pennsylvania State University, 525 Davey Laboratory, University Park, PA 16802 (United States); Zuo, Wenwen [Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030 (China); Yang, Jinyi; Wang, Feige; Wu, Xue-Bing; Jiang, Linhua; Yang, Qian [Department of Astronomy, School of Physics, Peking University, Beijing 100871 (China); Zhou, Hongyan [Polar Research Institute of China, 451 Jinqiao Road, Shanghai 200136 (China); Varricatt, Watson; Kerr, Tom; Benigni, Sam [UKIRT Observatory, Hilo, HI 96720 (United States); and others

    2017-04-01

    Very few low-ionization broad absorption line (LoBAL) QSOs have been found at high redshifts, to date. One high-redshift LoBAL QSO, J0122+1216, was recently discovered by the Lijiang 2.4 m Telescope, with an initial redshift determination of 4.76. Aiming to investigate its physical properties, we carried out follow-up observations in the optical and near-IR spectroscopy. Near-IR spectra from UKIRT and P200 confirm that it is a LoBAL, with a new redshift determination of 4.82 ± 0.01 based on the Mg ii emission-line. The new Mg ii redshift determination reveals strong blueshifts and asymmetry of the high-ionization emission lines. We estimate a black hole mass of ∼2.3 × 10{sup 9} M {sub ⊙} and Eddington ratio of ∼1.0 according to the empirical Mg ii-based single-epoch relation and bolometric correction factor. It is possible that strong outflows are the result of an extreme quasar environment driven by the high Eddington ratio. A lower limit on the outflowing kinetic power (>0.9% L {sub Edd}) is derived from both emission and absorption lines, indicating that these outflows play a significant role in the feedback process that regulates the growth of its black hole, as well as host galaxy evolution.

  19. LoRa Mobile-To-Base-Station Channel Characterization in the Antarctic.

    Science.gov (United States)

    Gaelens, Johnny; Van Torre, Patrick; Verhaevert, Jo; Rogier, Hendrik

    2017-08-18

    Antarctic conditions demand that wireless sensor nodes are operational all year round and that they provide a large communication range of several tens of kilometers. LoRa technology operating in sub-GHz frequency bands implements these wireless links with minimal power consumption. The employed chirp spread spectrum modulation provides a large link budget, combined with the excellent radio-wave propagation characteristics in these bands. In this paper, an experimental wireless link from a mobile vehicle which transmits sensor data to a base station is measured and analyzed in terms of signal-to-noise ratio and packet loss. These measurements confirm the usefulness of LoRa technology for wireless sensor systems in polar regions. By deploying directional antennas at the base station, a range of up to 30 km is covered in case of Line-of-Sight radio propagation in both the 434 and 868 MHz bands. Varying terrain elevation is shown to be the dominating factor influencing the propagation, sometimes causing the Line-of-Sight path to be obstructed. Tropospheric radio propagation effects were not apparent in the measurements.

  20. Leôlo, Leolô: o trabalho e o sonho

    Directory of Open Access Journals (Sweden)

    Patto Maria Helena Souza

    1998-01-01

    Full Text Available Contra leituras que o reduzem a prontuário psicológico que documenta um caso de psicopatologia familiar, o filme canadense Léolo é reinterpretado. Resgatam-se não só os seus aspectos sócio-políticos, como, acima de tudo, a dimensão formal, sem a qual é impossível entendê-lo como obra de arte.

  1. Production of the small heat shock protein Lo18 from Oenococcus oeni in Lactococcus lactis improves its stress tolerance.

    Science.gov (United States)

    Weidmann, Stéphanie; Maitre, Magali; Laurent, Julie; Coucheney, Françoise; Rieu, Aurélie; Guzzo, Jean

    2017-04-17

    Lactococcus lactis is a lactic acid bacterium widely used in cheese and fermented milk production. During fermentation, L. lactis is subjected to acid stress that impairs its growth. The small heat shock protein (sHsp) Lo18 from the acidophilic species Oenococcus oeni was expressed in L. lactis. This sHsp is known to play an important role in protein protection and membrane stabilization in O. oeni. The role of this sHsp could be studied in L. lactis, since no gene encoding for sHsp has been detected in this species. L. lactis subsp. cremoris strain MG1363 was transformed with the pDLhsp18 plasmid, which is derived from pDL278 and contains the hsp18 gene (encoding Lo18) and its own promoter sequence. The production of Lo18 during stress conditions was checked by immunoblotting and the cellular distribution of Lo18 in L. lactis cells after heat shock was determined. Our results clearly indicated a role for Lo18 in cytoplasmic protein protection and membrane stabilization during stress. The production of sHsp in L. lactis improved tolerance to heat and acid conditions in this species. Finally, the improvement of the L. lactis survival in milk medium thanks to Lo18 was highlighted, suggesting an interesting role of this sHsp. These findings suggest that the expression of a sHsp by a L. lactis strain results in greater resistance to stress, and, can consequently enhance the performances of industrial strains. Copyright © 2016 Elsevier B.V. All rights reserved.

  2. Pressure-induced increase of exciton-LO-phonon coupling in a ZnCdSe/ZnSe quantum well

    Science.gov (United States)

    Guo, Z. Z.; Liang, X. X.; Ban, S. L.

    2003-07-01

    The possibility of pressure-induced increase of exciton-LO-phonon coupling in ZnCdSe/ZnSe quantum wells is studied. The ground state binding energies of the heavy hole excitons are calculated using a variational method with consideration of the electron-phonon interaction and the pressure dependence of the parameters. The results show that for quantum wells with intermediate well width, the exciton binding energy and the LO-phonon energy may coincide in the course of pressure increasing, resulting in the increase of exciton-LO-phonon coupling. It is also found that among the pressure-dependent parameters, the influence of the lattice constant is the most important one. The changes of both the effective masses and the dielectric constants have obvious effects on the exciton binding energy, but their influences are counterbalanced.

  3. Juego organizacional y acción gerencial: la búsqueda del confluir entre lo planeado y lo actuado

    Directory of Open Access Journals (Sweden)

    María Prieto

    2005-05-01

    Full Text Available Este trabajo plantea que para enrumbar las organizaciones y/o instituciones hacia su supervivencia y sustentabilidad, la gerencia debe estimular la transformación de los individuos en jugadores de un equipo, donde se genere una sinergia positiva que facilite la coordinación del esfuerzo común para alcanzar las metas. Metafóricamente se concibe al juego organizacional como un encuentro entre dos equipos. El “A” representa una fuerza impulsora o red, conformada por la alta gerencia y grupos de apoyo, el otro, “B”, opositor o factores restrictivos. El resultado dependerá de cómo el equipo “A” confronte a las fuerzas opositoras, siendo necesario una mayor coherencia entre lo que se expresa a través de decisiones y la concreción de acciones que viabilicen el logro del objetivo propuesto.

  4. Jóvenes y comunicación. La impronta de lo virtual

    OpenAIRE

    Hernández Prados, Mª Ángeles; Castellano Conejero, Sandra

    2016-01-01

    Megías Quirós, I., & Rodríguez San Julián, E. (2014). Jóvenes y comunicación. La impronta de lo virtual. Madrid, Centro de Reina Sofía sobre Adolescencia y Juventud, Fundación de Ayuda contra la Drogadicción. ISBN 978-84-92454-24-2 (224 páginas)

  5. Evaluation of gastrointestinal tract transit times using barium-impregnated polyethylene spheres and barium sulfate suspension in a domestic pigeon (Columba livia) model.

    Science.gov (United States)

    Bloch, Rebecca A; Cronin, Kimberly; Hoover, John P; Pechman, Robert D; Payton, Mark E

    2010-03-01

    Barium impregnated polyethylene spheres (BIPS) are used in small animal medicine as an alternative to barium sulfate for radiographic studies of the gastrointestinal tract. To determine the usefulness of BIPS as an alternative to barium suspension in measuring gastrointestinal (GI) transit time for avian species, ventrodorsal radiographs were used to follow the passage of BIPS and 30% barium sulfate suspension through the GI tracts of domestic pigeons (Columba livia). Gastrointestinal transit times of thirty 1.5-mm BIPS administered in moistened gelatin capsules and 30% barium sulfate suspension gavaged into the crop were compared in 6 pigeons. Although the barium suspension passed out of the GI tract of all pigeons within 24 hours, the 1.5-mm BIPS remained in the ventriculus for 368.0 +/- 176.8 hours and did not clear the GI tract for 424.0 +/- 204.6 hours. Although the times for passage of BIPS and 30% barium sulfate suspension from the crop into the ventriculus were not significantly different (P = .14), the times for passage of BIPS from the ventriculus into the large intestine-cloaca and for clearance from the GI tract of the pigeons were significantly longer (P barium sulfate suspension. From the results of this study, we conclude that BIPS are not useful for radiographically evaluating GI transit times in pigeons and are unlikely to be useful in other avian species that have a muscular ventriculus. BIPS may or may not be useful for evaluating GI transit times in species that lack a muscular ventriculus.

  6. Film tuleb, nagu mina tahan / Viktor Kossakovski ; interv. Jaanus Kulli

    Index Scriptorium Estoniae

    Kossakovski, Viktor

    2000-01-01

    Vene tuntumaid dokumentaalfilmi autoreid räägib Tallinnas oma filmitööst ning hindab kõrgelt eesti filmimonteerijat Rainer Kaske, kelle juures firmas Tri Angle on tal praegu pooleli dokumentaalfilmi "Lasteaed" montaazh

  7. Sõmeru keskusehoone = Sõmeru community centre

    Index Scriptorium Estoniae

    2011-01-01

    Sõmeru alevikus Kooli 2 asuva Sõmeru keskusehoone arhitektuursest lahendusest ja sisekujundusest. Autorid Kristiina Arusoo, Karli Luik, Ralf Lõoke, Maarja Kask (Salto AB), Margit Argus. Loetletud AB Salto ja Margit Arguse tehtud töid

  8. Tartu Kesklinna Kooli juurdeehitus = Addition to Tartu Kesklinna (City Centre) School / Margit Mutso

    Index Scriptorium Estoniae

    Mutso, Margit, 1966-

    2009-01-01

    Juurdeehitise arhitektid Maarja Kask, Ralf Lõoke ja Karli Luik (Salto AB) pälvisid Eesti Kultuurkapitali arhitektuuri sihtkapitali aastapreemia 2008. Muinsuskaitse eritingimused koostas Maret Eimre. Juurdeehitise (Kroonuaia 7) arhitektuursest lahendusest, žürii hinnang

  9. The PSA−/lo prostate cancer cell population harbors self-renewing long-term tumor-propagating cells that resist castration

    Science.gov (United States)

    Qin, Jichao; Liu, Xin; Laffin, Brian; Chen, Xin; Choy, Grace; Jeter, Collene; Calhoun-Davis, Tammy; Li, Hangwen; Palapattu, Ganesh S.; Pang, Shen; Lin, Kevin; Huang, Jiaoti; Ivanov, Ivan; Li, Wei; Suraneni, Mahipal V.; Tang, Dean G.

    2012-01-01

    SUMMARY Prostate cancer (PCa) is heterogeneous and contains both differentiated and undifferentiated tumor cells, but the relative functional contribution of these two cell populations remains unclear. Here we report distinct molecular, cellular, and tumor-propagating properties of PCa cells that express high (PSA+) and low (PSA−/lo) levels of the differentiation marker PSA. PSA−/lo PCa cells are quiescent and refractory to stresses including androgen deprivation, exhibit high clonogenic potential, and possess long-term tumor-propagating capacity. They preferentially express stem cell genes and can undergo asymmetric cell division generating PSA+ cells. Importantly, PSA−/lo PCa cells can initiate robust tumor development and resist androgen ablation in castrated hosts, and harbor highly tumorigenic castration-resistant PCa cells that can be prospectively enriched using ALDH+CD44+α2β1+ phenotype. In contrast, PSA+ PCa cells possess more limited tumor-propagating capacity, undergo symmetric division and are sensitive to castration. Together, our study suggests PSA−/lo cells may represent a critical source of castration-resistant PCa cells. PMID:22560078

  10. Ulysses Radio Occultation Observations of the lo Plasma Torus During the Jupiter Encounter.

    Science.gov (United States)

    Bird, M K; Asmar, S W; Brenkle, J P; Edenhofer, P; Funke, O; Pätzold, M; Volland, H

    1992-09-11

    Radio signals from Ulysses were used to probe the lo plasma torus (IPT) shortly after the spacecraft's closest approach to Jupiter. The frequencies of the two downlinks at S-band (2.3 gigahertz) and X-band (8.4 gigahertz) were recorded, differenced, and integrated in order to derive the columnar electron density of the IPT. The measurements agree qualitatively with contemporary models of the IPT based on Voyager data, but significant differences are apparent as well. The overall level of the IPT electron density is approximately the same as the prediction, implying that the amount of gas (or plasma) injected from lo is similar to that observed during the Voyager era. On the other hand, the IPT seems to be less extended out of the centrifugal equator, implying a smaller plasma temperature than predicted.

  11. Defendiendo lo colectivo: combatir el conformismo, promover la educación pública

    Directory of Open Access Journals (Sweden)

    Luis Torrego Egido

    2013-01-01

    Full Text Available La escuela pública, ese instrumento de igualdad, está siendo desmantelada. El sentido común sobre la educación está siendo colonizado por el lenguaje de la mercantilización y del economicismo. Es preciso reaccionar y hacerlo desde la formación del profesorado. Para ello en este artículo, tras mostrar con tres anécdotas la pérdida de los logros de lo público, de lo común, se propone recuperar el discurso del sueño educativo de igualdad de oportunidades que supuso la alfabetización y la educación pública. También se enumeran media docena de propuestas que pueden ponerse en marcha por parte del profesorado para recuperar el sentido de la escuela pública.

  12. Lo público en el campo de la educación: transformaciones recientes en la Argentina transicional y reformista

    Directory of Open Access Journals (Sweden)

    Analía Minteguiaga

    2008-09-01

    Full Text Available El artículo analiza las transformaciones recientes en torno a lo público a través del caso de la educación pública en Argentina, en el contexto del retorno a la democracia y en la década de 1990 cuando se instrumentó la reforma educativa. El resultado de tales cambios será una nueva definición que intentará desconectarse abiertamente de cualquier referencia a lo estatal y vincularse, más bien, con lo societal. Se impondrá una concepción del Estado como “organización y aparato burocrático” y la sociedad civil aparecerá convocada, a veces, como espacio ideal de la pluralidad de posiciones y despliegue de las fuerzas democráticas; otras, como espacio de organizaciones intermedias como la Iglesia y la familia; finalmente, algunas veces, simple y llanamente como ámbito de mercado. Las consecuencias de tal desconexión permitirán la desaparición de lo público ligado a lo estatal en sentido amplio, es decir, como espacio de inclusión y de construcción de un proyecto colectivo y compartido de sociedad nacional.

  13. Elementos para la comprensión de lo público/privado desde la comunicación

    OpenAIRE

    Fabio López Díaz

    2012-01-01

    El documento se ocupa de la transformación conceptual que ha experimentado el ámbito de lo público/privado. En principio aborda las oposiciones teóricas construidas entre estos conceptos, para luego estudiar la pertinencia de dichas oposiciones. Se busca finalmente proporcionar un punto de vista que supere esta polarización tradicional y avance hacia el papel de la comunicación en la caracterización del vasto ámbito de lo público/privado.

  14. El espacio doméstico tras el soporte arquitectónico: claves para comprender el sentido multidimensional de lo íntimo en el dominio del hogar

    Directory of Open Access Journals (Sweden)

    Juan David Chávez Giraldo

    2010-12-01

    Full Text Available El escrito intenta descubrir la complejidad que se esconde tras la materialidad arquitectónica de los ámbitos habitacionales, que abre horizontes infinitos para el desarrollo cualificado del principal y más antiguo de los espacios arquitectónicos, el de la vivienda. Lo doméstico, en relación con lo íntimo y lo privado, y en contrapunto con lo público, lo colectivo y social, se constituye en parte esencial de la existencia humana aferrada a lo realmente trascendente y profundo. Estas perspectivas simbólicas se ventilan en este artículo, que hace un llamado a comprender la verdadera dimensión de lo doméstico para facilitar el cambio requerido, pues se concluye que en buena parte de la arquitectura contemporánea hay deficiencias para resolver las necesidades hondas de lo íntimo doméstico.

  15. Técnica de Lindner-Guist: lo impensable en cirugía de desprendimiento de retina

    OpenAIRE

    Hernández Da Mota, Sergio E.

    2015-01-01

    Múltiples han sido las técnicas empleadas para el tratamiento del desprendimiento de la retina a lo largo de la historia sobre todo después de la descrita por Gonin que representa un parteaguas en el tratamiento de esta enfermedad. Una de las más curiosas y cruentas que se han descrito es la de Lindner-Guist, que se realizó en la década de los treinta del siglo pasado. Lo que más llama la atención de esta técnica es que para lograr crear la cicatriz coriorretiniana alrededor de las lesione...

  16. Técnica de Lindner-Guist: lo impensable en cirugía de desprendimiento de retina

    Directory of Open Access Journals (Sweden)

    Sergio E. Hernández Da Mota

    2015-10-01

    Lo que más llama la atención de esta técnica es que para lograr crear la cicatriz coriorretiniana alrededor de las lesiones se empleaban trepanaciones en la esclera, dentro de las cuales se vertía una solución de sosa o potasa cáustica. Por lo cruento y las obvias complicaciones que producía este método entre las que se contaba la consecuente quemadura química del ojo, pronto se abandonó. Representa sin embargo un procedimiento anecdótico en la historia de la cirugía del desprendimiento retiniano.

  17. Updated Higgs cross section at approximate N{sup 3}LO

    Energy Technology Data Exchange (ETDEWEB)

    Bonvini, Marco [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany); Ball, Richard D. [Edinburgh Univ. (United Kingdom). Tait Inst.; Forte, Stefano [Milano Univ. (Italy). Dipt. di Fisica; INFN, Milano (Italy); Marzani, Simone [Durham Univ. (United Kingdom). Inst. for Particle Physics Phenomenology; Ridolfi, Giovanni [Genova Univ. (Italy). Dipt. di Fisica; INFN, Genova (Italy)

    2014-04-15

    We update our estimate of the cross section for Higgs production in gluon fusion at next-to-next-to-next-to-leading order (N{sup 3}LO) in α{sub s} in view of the recent full computation of the result in the soft limit for infinite top mass, which determines a previously unknown constant. We briefly discuss the phenomenological implications. Results are available through the updated version of the ggHiggs code.

  18. La crisis financiera intensifica momentos del hacer y lo hecho

    Directory of Open Access Journals (Sweden)

    Margarita Camarena Luhrs

    2012-01-01

    Full Text Available Las expectativas de una economía que supere la separación entre el hacer y lo hecho, están estrechamente ligadas con la operación y estructura financieras que dotan de sentido a casi todas las identidades del mundo actual. Como el proceso financiero intensifica la crisis actual, es posible que se le escapen momentos de unificación de la existencia aún brevemente.

  19. La función de lo imaginario en el juego.

    OpenAIRE

    Cruz Aponasenko, Alexander

    2012-01-01

    Recibido: Agosto.2012 Aceptado: Septiembre.2012 Este trabajo revisa la influencia de los factores imaginarios del juego en la estructuración subjetiva y la conformación del fantasma en los niños a partir del juego. Se propone ampliar la concepción de juego que se tiene en la clinica de niños y poner en tensión la primacia de los simbolico frente a lo imaginario.

  20. Characteristics of Offshore Hawai';i Island Seismicity and Velocity Structure, including Lo';ihi Submarine Volcano

    Science.gov (United States)

    Merz, D. K.; Caplan-Auerbach, J.; Thurber, C. H.

    2013-12-01

    The Island of Hawai';i is home to the most active volcanoes in the Hawaiian Islands. The island's isolated nature, combined with the lack of permanent offshore seismometers, creates difficulties in recording small magnitude earthquakes with accuracy. This background offshore seismicity is crucial in understanding the structure of the lithosphere around the island chain, the stresses on the lithosphere generated by the weight of the islands, and how the volcanoes interact with each other offshore. This study uses the data collected from a 9-month deployment of a temporary ocean bottom seismometer (OBS) network fully surrounding Lo';ihi volcano. This allowed us to widen the aperture of earthquake detection around the Big Island, lower the magnitude detection threshold, and better constrain the hypocentral depths of offshore seismicity that occurs between the OBS network and the Hawaii Volcano Observatory's land based network. Although this study occurred during a time of volcanic quiescence for Lo';ihi, it establishes a basis for background seismicity of the volcano. More than 480 earthquakes were located using the OBS network, incorporating data from the HVO network where possible. Here we present relocated hypocenters using the double-difference earthquake location algorithm HypoDD (Waldhauser & Ellsworth, 2000), as well as tomographic images for a 30 km square area around the summit of Lo';ihi. Illuminated by using the double-difference earthquake location algorithm HypoDD (Waldhauser & Ellsworth, 2000), offshore seismicity during this study is punctuated by events locating in the mantle fault zone 30-50km deep. These events reflect rupture on preexisting faults in the lower lithosphere caused by stresses induced by volcano loading and flexure of the Pacific Plate (Wolfe et al., 2004; Pritchard et al., 2007). Tomography was performed using the double-difference seismic tomography method TomoDD (Zhang & Thurber, 2003) and showed overall velocities to be slower than

  1. Resonant intersubband polariton-LO phonon scattering in an optically pumped polaritonic device

    Science.gov (United States)

    Manceau, J.-M.; Tran, N.-L.; Biasiol, G.; Laurent, T.; Sagnes, I.; Beaudoin, G.; De Liberato, S.; Carusotto, I.; Colombelli, R.

    2018-05-01

    We report experimental evidence of longitudinal optical (LO) phonon-intersubband polariton scattering processes under resonant injection of light. The scattering process is resonant with both the initial (upper polariton) and final (lower polariton) states and is induced by the interaction of confined electrons with longitudinal optical phonons. The system is optically pumped with a mid-IR laser tuned between 1094 cm-1 and 1134 cm-1 (λ = 9.14 μm and λ = 8.82 μm). The demonstration is provided for both GaAs/AlGaAs and InGaAs/AlInAs doped quantum well systems whose intersubband plasmon lies at a wavelength of ≈10 μm. In addition to elucidating the microscopic mechanism of the polariton-phonon scattering, it is found to differ substantially from the standard single particle electron-LO phonon scattering mechanism, and this work constitutes an important step towards the hopefully forthcoming demonstration of an intersubband polariton laser.

  2. Automated Reconstruction of Building LoDs from Airborne LiDAR Point Clouds Using an Improved Morphological Scale Space

    Directory of Open Access Journals (Sweden)

    Bisheng Yang

    2016-12-01

    Full Text Available Reconstructing building models at different levels of detail (LoDs from airborne laser scanning point clouds is urgently needed for wide application as this method can balance between the user’s requirements and economic costs. The previous methods reconstruct building LoDs from the finest 3D building models rather than from point clouds, resulting in heavy costs and inflexible adaptivity. The scale space is a sound theory for multi-scale representation of an object from a coarser level to a finer level. Therefore, this paper proposes a novel method to reconstruct buildings at different LoDs from airborne Light Detection and Ranging (LiDAR point clouds based on an improved morphological scale space. The proposed method first extracts building candidate regions following the separation of ground and non-ground points. For each building candidate region, the proposed method generates a scale space by iteratively using the improved morphological reconstruction with the increase of scale, and constructs the corresponding topological relationship graphs (TRGs across scales. Secondly, the proposed method robustly extracts building points by using features based on the TRG. Finally, the proposed method reconstructs each building at different LoDs according to the TRG. The experiments demonstrate that the proposed method robustly extracts the buildings with details (e.g., door eaves and roof furniture and illustrate good performance in distinguishing buildings from vegetation or other objects, while automatically reconstructing building LoDs from the finest building points.

  3. Eesti Maaülikooli spordihoone = The Sports Hall of the Estonian University of Life Sciences / Margit Mutso

    Index Scriptorium Estoniae

    Mutso, Margit, 1966-

    2010-01-01

    Tartus Kreutzwaldi 3 asuva EMÜ spordihoone arhitektuursest lahendusest. Arhitektid: Maarja Kask, Karli Luik, Ralf Lõoke (Salto AB). Sisearhitektid: Katrin Kaevats, Jaan Port (Funk AB). Žürii liikme Kalle Komissarovi hinnang kultuurkapitali aastapreemiale esitatud hoonele

  4. Kuni 16. VIII toimub Loode-Prantsusmaa rannikulinnas Mont-Saint-Michel'is...

    Index Scriptorium Estoniae

    2004-01-01

    Kunstifestival "Quand l'art change la baie" ("Kui kunst merelahte muudab"). Eestist on kutsutud Alice Kask, Kaie Kal, Laurentsius, Peeter Laurits, Mall Nukke, Kadri Kangilaski, Toomas Tõnissoo, kes lisaks maalide eksponeerimisele teevad kohapeal ka heinalinde

  5. Hariliku pliiatsi kaks otsa / Tõnu Kaalep

    Index Scriptorium Estoniae

    Kaalep, Tõnu, 1966-

    2011-01-01

    Näitus "Harilik" Tallinna Kunstihoone galeriis 6. märtsini 2011, kuraator Margot Kask. MariaUNDmaria (Maria Juur, Maria Arusoo) näitus "Everything Counts In Large Amounts" Tallinna Linnagaleriis 13. märtsini 2011

  6. Lo público y lo privado en los escritos de Alexander Von Humboldt sobre Cuba

    Directory of Open Access Journals (Sweden)

    Rebok, Sandra

    2004-12-01

    Full Text Available This study seeks to collect the comments and judgements that Humboldt makes about Cuba and evaluate their character. The resulting analysis and interpretation will be undertaken on two different levels: One refers to the information that can be found in his unofficial works, which means the letters Humboldt sent during or shortly after of his visits to Cuba, as well as the diaries he used during his expedition. The other is based on the official works, which include his travel description, his famous Essay on Cuba and his autobiographical text written in 1804. Constrasting these descriptions, we will compare the evaluations of this Prussian traveller elaborated in the moment he visited the island, with the works he wrote 22 years after his return to Europe.

    Este trabajo tiene el objeto de recopilar los comentarios y juicios que hace Humboldt sobre Cuba y valorar su carácter. El análisis e interpretación que resultará de ello se realiza en dos niveles distintos: uno se refiere a las informaciones que se encuentran en escritos no oficiales, es decir, en las cartas que Humboldt envió durante o poco tiempo después de sus visitas a Cuba, y en los diarios que utilizó a lo largo de su expedición. El otro se fundamenta en los escritos oficiales, que comprenden su narración del viaje, el famoso Ensayo sobre Cuba y la memoria autobiográfica escrita en 1804. Mediante el contraste de estas descripciones se pretende comparar las apreciaciones de este viajero prusiano elaboradas en el preciso momento que visita la isla, cotejándolas con las obras que redactó 22 años después de su vuelta a Europa. Este trabajo tiene el objeto de recopilar los comentarios y juicios que hace Humboldt sobre Cuba y valorar su carácter. El análisis e interpretación que resultará de ello se realiza en dos niveles distintos: uno se refiere a las informaciones que se encuentran en escritos no oficiales, es decir, en las cartas que Humboldt envi

  7. Performance analysis of LoRa radio for an indoor IoT applications

    NARCIS (Netherlands)

    Ayele, Eyuel D.; Hakkenberg, Chiel; Meijers, Jan Pieter; Zhang, Kyle; Meratnia, Nirvana; Havinga, Paul J.M.

    2017-01-01

    LoRa is an emerging wireless standard specifically designed for Low Power Wide Area Networks (LPWANs). It provides long range, low data rate, and energy efficient wireless communication and is believed to have high potential for realization of a large number of Internet of Things (IoT) applications.

  8. Descrição da artéria celíaca em pombos domésticos (Columba livia

    Directory of Open Access Journals (Sweden)

    Marcelo Ismar Santana

    2012-03-01

    Full Text Available http://dx.doi.org/10.5007/2175-7925.2012v25n2p125 O presente estudo objetivou definir a origem e a distribuição da artéria celíaca e de seus ramos colaterais em 15 aves da espécie Columba livia, cedidas pelo Centro de Controle de Zoonoses de Brasília. Com a finalidade de marcar o sistema arterial dos espécimes, o tronco braquiocefálico esquerdo foi canulado e injetado com solução aquosa de látex corado. Posteriormente, procedeu-se a fixação das aves com solução aquosa de formol 10% e a dissecação com instrumentos adequados, obtendo-se os resultados a seguir. A artéria celíaca originou-se da face ventral da aorta descendente. O primeiro ramo colateral surgiu da própria artéria celíaca, constituindo a artéria esofágica. Posteriormente, artéria celíaca se bifurcou em dois ramos, denominados ramo esquerdo da artéria celíaca e ramo direito da artéria celíaca. O ramo esquerdo emitiu a artéria proventricular ventral, seguida das artérias esplênicas, da artéria proventricular dorsal e da artéria hepática esquerda. Por fim, o ramo esquerdo se bifurcou, originando as artérias gástricas ventral e esquerda. O ramo direito emitiu a artéria hepática direita, seguida da artéria ileal e da artéria gástrica direita. Por fim, o ramo direito prosseguiu como artéria pancreaticoduodenal. Os achados deste trabalho apresentaram grande similaridade com as linhagens de aves da espécie Gallus gallus, exceto pela ausência da artéria ileocecal, de ramos císticos e da artéria gástrica dorsal.

  9. El misterio de la muerte en lo invisible. Maeterlinck en Azorín

    Directory of Open Access Journals (Sweden)

    Pilar Úcar Ventura

    1995-12-01

    Full Text Available Si ya la propia Muerte nos advierte del peligro y la seriedad que entraña acercarse a ella, aunque sea en el artificio de una representación dramática, quiero acercarme de puntillas, tan sólo rozar el velo del Misterio invisible de una realidad, casi de la única realidad latente de nuestra existencia. El tratamiento teatral del tema de la Muerte nos puede resultar ahora poco dramático en algunas ocasiones, pero fue algo recurrente en el teatro simbolista europeo, sobre todo esa penosa espera de lo Inevitable, del destino implacable contra el que no puede hacer nada la Hurnanidad. El simbolismo prefiere la comunicación indirecta que sugiera y evoque, con una prosa musical cuidadosamente elaborada, que tuvo amplia repercusión en otros ámbitos de la cultura.

  10. Eesti ekspositsioon "Gaasitoru" Veneetsia XI arhitektuuribiennaalil = Estonia's entry at the 11th International Architecture Exhibition at La Biennale di Venezia: "Gas Pipe" / Margit Mutso

    Index Scriptorium Estoniae

    Mutso, Margit, 1966-

    2009-01-01

    Installatsiooni autorid on Maarja Kask, Ralf Lõoke (Salto AB) ja Neeme Külm, kuraator Ingrid Ruudi (pälvisid Eesti Kultuurkapitali peapreemia ja arhitektuuri sihtkapitali aastapreemia 2008) ning komissar Laila Põdra. Žürii hinnang "Gaasitorule"

  11. Kõik sõltub meist endist / Loit Jõekalda

    Index Scriptorium Estoniae

    Jõekalda, Loit

    2000-01-01

    VI rahvusvahelisest Läänemere maade graafikabiennaalist "Kaliningrad-Königsberg 2000". Grand prix - Juho Karjalainen, kolm võrdset preemiat - Virge Jõekalda, Redas Dirzys, Andrei Kostin (postuumselt). Diplomi saanud kunstnikud. Osalejad (žüriis Eve Kask) Eestist.

  12. Lo arbitrario del lenguaje y el lugar de la cultura

    Directory of Open Access Journals (Sweden)

    Carlos R. Luis

    2008-04-01

    Full Text Available Se investiga una línea de pensamiento, partiendo del materialismo antiguo (Epicuro y en su desarrollo posterior por la filosofía del Iluminismo (Locke, Condillac: el postulado de un origen "natural" para el lenguaje (corporal, de respuesta al ambiente y una evolución que lo refunda como social y por tanto arbitrario. Se analiza la idea de delimitación del mundo natural como primera condición para la supervivencia, es decir, para la producción de bienes. Aparece así la cultura, que desde temprano es asociada con cultivo. Sus delimitaciones son sancionadas por el lenguaje a través de los nombres, que no designan sustancias, sino agrupamientos arbitrarios de cualidades. Los nombres son sólo formas diferenciadoras, variables, tanto como son variables las impresiones sensoriales de individuo a individuo; es la cultura lo que viene a garantizar el acuerdo, a producir el efecto de uniformidad de las designaciones. El lenguaje es, entonces, un modo de nombrar un mundo clasificado de una cierta manera para producir predicaciones estables entre quienes comparten esas clasificaciones, entre quienes comparten una cultura.This is the study of a line of thought rooted in ancient materialism (Epicure and its further development through the philosophy of Enlightenment (Locke, Condillac: the stating of a "natural" origin for language (as a corporal response to the environment and, later on, a redefinition of that original basis as being social, and therefore, arbitrary. The idea of delimitation of the natural world is introduced as the prime condition for survival, i.e., for the production of goods. Culture is then associated to the idea of cultivation. Its delimitations are sanctioned by language by means of names, which do not refer to substances, but to arbitrary collections of qualities. Names are only differentiating, variable forms, just as sensorial impressions are variable from an individual to another. Culture works as a guarantee of agreement

  13. Depth-resolved cellular microrheology using HiLo microscopy.

    Science.gov (United States)

    Michaelson, Jarett; Choi, Heejin; So, Peter; Huang, Hayden

    2012-06-01

    It is increasingly important to measure cell mechanical properties in three-dimensional environments. Particle tracking microrheology (PTM) can measure cellular viscoelastic properties; however, out-of-plane data can introduce artifacts into these measurements. We developed a technique that employs HiLo microscopy to reduce out-of-plane contributions. This method eliminated signals from 90% of probes 0.5 μm or further from the focal plane, while retaining all in-plane probes. We used this technique to characterize live-cell bilayers and found that there were significant, frequency-dependent changes to the extracted cell moduli when compared to conventional analysis. Our results indicate that removal of out-of-plane information is vital for accurate assessments of cell mechanical properties.

  14. A Fair Adaptive Data Rate Algorithm for LoRaWAN

    OpenAIRE

    Abdelfadeel, Khaled Q.; Cionca, Victor; Pesch, Dirk

    2018-01-01

    LoRaWAN exhibits several characteristics that can lead to an unfair distribution of the Data Extracted Rate (DER) among nodes. Firstly, the capture effect leads to a strong signal suppressing a weaker signal at the gateway and secondly, the spreading codes used are not perfectly orthogonal, causing packet loss if an interfering signal is strong enough. In these conditions, nodes experiencing higher attenuation are less likely to see their packets received correctly. We develop FADR, a Fair Ad...

  15. Combination of Vandetanib, Radiotherapy, and Irinotecan in the LoVo Human Colorectal Cancer Xenograft Model

    International Nuclear Information System (INIS)

    Wachsberger, Phyllis; Burd, Randy; Ryan, Anderson; Daskalakis, Constantine; Dicker, Adam P.

    2009-01-01

    Purpose: The tumor growth kinetics of the human LoVo colorectal xenograft model was assessed in response to vandetanib, an orally available receptor tyrosine kinase inhibitor, radiotherapy (RT), or irinotecan (CPT-11), as single therapies and in combination. Methods and Materials: LoVo cells were injected subcutaneously into the right hind limb (5x10 6 cells in 100μL phosphate-buffered saline) of athymic NCR NUM mice and tumors were grown to a volume of 200-300 mm 3 before treatment. Vandetanib was administered at 50 mg/kg daily orally for 14 days starting on Day 1. RT was given as three fractions (3x3 Gy) on Days 1, 2, and 3. CPT-11 was given at 15 mg/kg intraperitoneally on Days 1 and 3. Tumor volumes were measured on a daily basis and calculated by measuring tumor diameters with digital calipers in two orthogonal dimensions. Results: All three single treatments (vandetanib, CPT-11, and radiation) significantly slowed LoVo colorectal tumor growth. Vandetanib significantly increased the antitumor effects of CPT-11 and radiation when given in combination with either of these treatments. These treatment combinations resulted in a slow tumor growth rate during the 2 weeks of vandetanib administration. The triple combination of vandetanib, CPT-11, and radiation produced the most marked improvement in response as observed by measurable shrinkage of tumors during the first week of treatment. Conclusions: The tumor growth delay kinetics observed in this study of the LoVo colorectal model suggest concurrent and sustained post-sequencing of vandetanib with cytotoxic therapy may be beneficial in tumors of this type.

  16. Implementace algoritmu LoD terénu

    OpenAIRE

    Radil, Přemek

    2012-01-01

    Tato práce pojednává o implementaci algoritmu pro LoD vizualizaci terénu Seamless Patches for GPU-Based Terrain Rendering jako rozšíření knihovny Coin3D. Prezentuje postupy, za pomoci kterých tento algoritmus zobrazuje rozsáhlé terénní datasety. Celý terén je složen z plátů, které jsou uloženy v hierarchické struktuře. Hierarchie plátů je pak za běhu programu procházena jsou z ní generovány aktivní pláty na základě pozice pozorovatele. Každý plát se skládá z předem definovaných dlaždic a spoj...

  17. Lo social desde la política

    Directory of Open Access Journals (Sweden)

    Darío Salinas Figueredo

    2000-01-01

    Full Text Available Sin desconocer las aproximaciones existentes sobre aspectos fundamentales de la problemática social en América Latina, por ejemplo la pobreza y la índole de política que de manera predominante se formula para encararla, la trayectoria argumental de este trabajo se encamina a mostrar la importancia de trabajar hacia el desarrollo de una perspectiva más amplia. Las referencias empíricas cotejadas no se refieren a hechos puntuales, sino a indicadores que pautan tendencias. Siendo los propósitos aquí reunidos de naturaleza comprensiva, se parte de la premisa según la cual escasamente se problematiza lo social y la propia política social, sus vínculos con la política general, el modelo de desarrollo y el tipo de democracia que la política predominante busca proyectar.

  18. El Entorno Aumentado: Imperativo informacional para una ecología digital de lo arquitectónico

    OpenAIRE

    Roig Segovia, Eduardo

    2014-01-01

    Esta tesis se suma a los intentos teóricos de clarificar la impronta del dominio digital en lo arquitectónico. Propone una cartografía crítica para reconstruir el proceso de tal convergencia considerando aquellos acontecimientos reveladores que lo han pautado. La integración de la extensión digital propia las tecnologías de la información y la comunicación en el contexto tradicional arquitectónico ha supuesto el advenimiento de un ecosistema artificial complejo. A esta realidad o proceso conc...

  19. Modeling and Performance Analysis of Route-Over and Mesh-Under Routing Schemes in 6LoWPAN under Error-Prone Channel Condition

    Directory of Open Access Journals (Sweden)

    Tsung-Han Lee

    2013-01-01

    Full Text Available 6LoWPAN technology has attracted extensive attention recently. It is because 6LoWPAN is one of Internet of Things standard and it adapts to IPv6 protocol stack over low-rate wireless personal area network, such as IEEE 802.15.4. One view is that IP architecture is not suitable for low-rate wireless personal area network. It is a challenge to implement the IPv6 protocol stack into IEEE 802.15.4 devices due to that the size of IPv6 packet is much larger than the maximum packet size of IEEE 802.15.4 in data link layer. In order to solve this problem, 6LoWPAN provides header compression to reduce the transmission overhead for IP packets. In addition, two selected routing schemes, mesh-under and route-over routing schemes, are also proposed in 6LoWPAN to forward IP fragmentations under IEEE 802.15.4 radio link. The distinction is based on which layer of the 6LoWPAN protocol stack is in charge of routing decisions. In route-over routing scheme, the routing distinction is taken at the network layer and, in mesh-under, is taken by the adaptation layer. Thus, the goal of this research is to understand the performance of two routing schemes in 6LoWPAN under error-prone channel condition.

  20. LO RURAL. UN CAMPO INACABADO THE RURAL AREA: AN UNFINISHED “FIELD”

    Directory of Open Access Journals (Sweden)

    Nelly del Carmen Suárez Restrepo

    2008-12-01

    Full Text Available El surgimiento de nuevas lecturas de la realidad social rural latinoamericana, e incluso europea, y los efectos de las políticas internacionales sobre qué producir, cuánto, cómo y dónde, han puesto en la agenda académica el debate entorno al significado y contenido de lo rural y del desarrollo rural. En el centro de esta controversia está la superación o ruptura entre lo rural y lo agrario, dos términos otrora considerados como sinónimos. Trascender esta dicotomía reduccionista abre la posibilidad de repensar los caminos y las estrategias mediante las cuales las sociedades en general, en sus esfuerzos por autoproducirse crean condiciones de vida, proveen recursos necesarios y pertinentes y movilizan las capacidades y las libertades de los pobladores rurales. Este documento recoge los elementos más sobresalientes de la investigación “Repensando lo rural y el desarrollo rural” en la que se hizo una revisión de literatura sobre el tema y se buscó, mediante entrevistas semiestructuradas³, la participación de funcionarios institucionales, representantes gremiales y académicos. En términos generales se pretendía identificar los significados y los contenidos que se atribuyen a lo rural y al desarrollo rural. El texto se organiza en tres partes: En la primera parte, Reiteración o resignificación, se analizan los posibles avances y permanencias en los significados y contenidos de lo rural y del desarrollo rural. En la segunda, denominada Elementos constitutivos del desarrollo rural, se hace referencia a las dimensiones, los indicadores y los actores identificados mediante la información obtenida. En la tercera parte, se establece una relación entre el discurso y las prácticas de desarrollo en Colombia y sus implicaciones en el diseño de políticas públicas. Finalmente se concluye que el desarrollo rural ha tenido como trasfondo una orientación modernizadora de la sociedad rural en general y del sector agrario en particular

  1. Las construcciones de lo Español entre los Militares Norteamericanos en Puerto Rico, 1898-1899

    Directory of Open Access Journals (Sweden)

    Picó, Fernando

    1997-12-01

    Full Text Available When evaluating the situation of the Portorrican population, some Northamerican Army officers placed "the Spanish element" vis a vis "the portorrican element" in order to reaffirm their rejection ofthe Island. Others blamed the Spaniards for all the evils they perceived or imagined. These reports were written in the context of a political transition in which the US officers were forced to resolve a contradiction between an invasion allegedly destined to set the Portorricans free from the Spaniards, and the fact that the main task of the military occupation was to protect the Spaniards against the Portorricans. Through the analysis of the attitudes of three Army officers as shown in the military correspondence produced during the first two years of the occupation (US National Archives, the author concludes that the construction of "the Portorrican" as "the Spaniard" began with North Americans themselves, at the time of the military government.

    En su apreciación de la población de la isla algunos militares norteamericanos contraponen lo español a lo puertorriqueño para corroborar su rechazo de lo insular. Otros culpan a los españoles de todos los males percibidos o imaginados. Estos ejercicios se dan en el contexto de supervisar una transición política en donde los militares se vieron en la necesidad de resolver la contradicción entre una invasión asumida para liberar a los puertorriqueños de España y una ocupación cuya principal tarea militar fue proteger a los españoles contra los puertorriqueños. Utilizando la correspondencia militar de los primeros dos años de ocupación habida en los Archivos Nacionales de los Estados Unidos, se examinan las actitudes de tres oficiales, concluyendo que la construcción de lo puertorriqueño como lo español comenzó con los propios norteamericanos del gobierno militar.

  2. La paradoja de lo público en Richard Rorty

    Directory of Open Access Journals (Sweden)

    Martha Palacio Avendaño

    2008-01-01

    Full Text Available El concepto de lo público en Richard Rorty, heredero de la tradición liberal, admite ser tratado como parte de un juego del lenguaje denominado liberalismo democrático. En ese sentido, una de las reglas de este juego para saber si una jugada es válida consiste en asumir la distinción entre esfera pública y privada. Richard Rorty pensó que este juego no requería fundamentación más allá de la forma de jugarlo, que el criterio en que se apoyaría estaba en las prácticas que tienen lugar dentro del mismo con arreglo a sostener una utopía que permitiera hacer cada vez más jugadas. Esto es, el liberalismo democrático no requería basarse en algo más allá de las prácticas conducentes a lograr una esperanza social alentada por la libertad en defensa del pluralismo. Su utopía liberal, guiada por el principio de la no-crueldad, haría posible una sociedad inclusiva en la que todos tuvieran espacio para su léxico privado. De este modo, Rorty habría vinculado libertad y solidaridad, pero su juego del lenguaje permite advertir la paradoja del vínculo que implicaría el sentido de lo público. Aquí, la libertad no es condición suficiente de la solidaridad, de modo que la inclusión social no tiene cabida en su juego del lenguaje.

  3. Eesti laste suvi

    Index Scriptorium Estoniae

    2010-01-01

    Laste suvisest koolivaheajast räägivad Eesti omavalitsuse ametnikud ja sotsiaaltöötajad: Kaasi Almers, Inna Kask, Aasa Saarna, Ülle Rajasalu, Merle Leopard, Aime Koger, Margit Pajo, Pilleriin Aalde, Andres Julle ja Tiiu Kuus

  4. Paide Spordihall = Paide Sports Hall / Margit Mutso

    Index Scriptorium Estoniae

    Mutso, Margit, 1966-

    2010-01-01

    Paides Aiavilja 1 asuva spordihalli arhitektuursest lahendusest. Arhitektid: Maarja Kask, Karli Luik, Ralf Lõoke, kaasautor Jaan Port (Salto AB). Sisearhitekt Ville Lausmäe (VL Sisearhitektuur). Žürii liikme Kalle Komissarovi hinnang kultuurkapitali aastapreemiale esitatud hoonele

  5. Kas president peaks Asso Kommerile armu andma? : kuueks ja pooleks aastaks vangi mõistetud endine jäägripealik Asso Kommer esitas veebruari lõpul armuandmispalve

    Index Scriptorium Estoniae

    1998-01-01

    Eesti Päevalehe küsitlusele vastavad EELK Põlva Maarja koguduse kirikuõpetaja Üllar Kask, Medica Arstikeskuse perearst Ahti Virkus, AS Ius Dicere tegevdirektor Reigo Kala, Tallinna volikogu liige Arved Liivrand, Riigikogu majanduskomisjoni esimees Tiit Made

  6. Noorte kunst Frankfurdis

    Index Scriptorium Estoniae

    1999-01-01

    26. X avati Frankfurdis eesti noorte kunstnike vahetusnäitus 'Lääne-ida diivan'. Osalevad Killu Sukmit, Kadi Soosalu, Margot Kask, Piia Ruber, Mirja-Mari Smidt, Jasper Zoova, Marko Laimre, Kiwa, Taave Tuutma. Kuraator Mari Laanemets.

  7. "Impact 4" Berliinis ja Poznanis / Vappu Thurlow

    Index Scriptorium Estoniae

    Thurlow, Vappu, 1960-

    2005-01-01

    5.-10. IX Berliinis ja Poznanis toimunud neljandast rahvusvahelisest graafikakonverentsist "Impact" alapealkirjaga "Kontakt". Eestist osalesid Loit Jõekalda, Eve Kask, Karin Laansoo ja Vappu Thurlow. 2007. a. Tallinnas toimuva "Impact 5", alapealkirjaga "Slices of Time/Lõigutud aeg", kontseptsioon

  8. 3. V avati Tartu Kunstimajas näitus "Rabnitztaler malerwochen"

    Index Scriptorium Estoniae

    2005-01-01

    Austria kunstniku Harro Pirchi korraldatavatest kunstinädalatest Rabnitztalis. Näitusel eksponeeritakse laagrites osalenud austria, saksa, hollandi (loetletud) ja eesti kunstnike (Jüri Kask, Mari Kurismaa, Rein Maantoa, Anne Parmasto, Jaan Punga, Valeri Vinogradov) töid

  9. Evaluation of Two Miniplate Systems and Figure-of-eight Bandages for Stabilization of Experimentally Induced Ulnar and Radial Fractures in Pigeons ( Columba livia ).

    Science.gov (United States)

    Bennert, Beatrice M; Kircher, Patrick R; Gutbrod, Andreas; Riechert, Juliane; Hatt, Jean-Michel

    2016-06-01

    Although plate fixation has advantages over other fixation methods for certain indications, it is rarely used in avian surgery, especially in birds that weigh less than 1000 g. Exceptionally small plating systems for these birds are required, which are relatively expensive and difficult to insert. To study avian fracture healing after repair using miniplates, we evaluated 2 steel miniplate systems in 27 pigeons ( Columba livia ) divided into 4 groups. In each pigeon, the left ulna and radius were transected and the ulna was repaired with a bone plate. In groups A and B, a 1.3-mm adaption plate was applied without and with a figure-of-eight bandage; in groups C and D, a 1.0-mm compression plate was applied without and with a bandage, respectively. Healing was evaluated with radiographs after 3, 14, and 28 days; flight tests were conducted after 14, 21, and 28 days; and the wing was macroscopically examined after euthanasia of birds on day 28. Fractures healed without bending or distortion of the plate in all 27 birds, and no significant differences in healing were found between treatment groups. At the end of the study, 23 pigeons (85.2%) showed good or very good flight ability. Results show the 1.3-mm adaption plate and the 1.0-mm compression plate meet the requirements for avian osteosynthesis and can be recommended for fracture repair of the ulna or other long bones in birds weighing less than 500 g. The application of a figure-of-eight bandage might be beneficial in fracture healing.

  10. Historia a medias e historias medias: imaginarios de lo pueblerino en el contexto de juicios al terrorismo de Estado

    Directory of Open Access Journals (Sweden)

    Ariel Gravano

    2016-01-01

    Full Text Available El propósito de este trabajo antropológico es presentar una situación en que la Historia «llega» a ciudades medias del centro de la provincia de Buenos Aires, Argentina. Se toman como caso juicios al terrorismo de Estado y hechos de relevancia nacional vinculados con la defensa de los derechos humanos. Lo hacemos desde el concepto de imaginarios identitarios urbanos, por los cuales adquiere importancia el análisis de cómo «la ciudad toda» vive esos acontecimientos, en los que se contrasta la Historia centralizada en la metrópolis y la historia local, en la que parece preponderar una imagen de «quietud», «donde nunca pasa (ni pasó nada». Avanzamos en la postulación de «lo pueblerino» como eje dentro de la dialéctica entre lo rural y lo urbano y la implicancia de actores y analistas «nativos», ante la posibilidad de problematizar tanto la Historia a medias cuanto sus propias historias medias.

  11. La enfermedad mental a lo largo de la historia

    OpenAIRE

    Álvarez Cernuda, Sandra

    2015-01-01

    La enfermedad mental hoy en día sigue siendo una patología desconocida, llegando incluso a no existir una definición clara para el “trastorno mental” como tal y precisando cada uno de ellos una definición distinta. Este gran desconocimiento hace que dichos pacientes sufran una gran estigmatización no sólo por gente de otros ámbitos sino en ocasiones por los mismos profesionales sanitarios. El objetivo de esta revisión es dar a conocer el concepto que tenían nuestros antepasados de la enferm...

  12. Lava bubble-wall fragments formed by submarine hydrovolcanic explosions on Lo'ihi Seamount and Kilauea Volcano

    Science.gov (United States)

    Clague, D.A.; Davis, A.S.; Bischoff, J.L.; Dixon, J.E.; Geyer, R.

    2000-01-01

    Glassy bubble-wall fragments, morphologically similar to littoral limu o Pele, have been found in volcanic sands erupted on Lo'ihi Seamount and along the submarine east rift zone of Kilauea Volcano. The limu o Pele fragments are undegassed with respect to H2O and S and formed by mild steam explosions. Angular glass sand fragments apparently form at similar, and greater, depths by cooling-contraction granulation. The limu o Pele fragments from Lo'ihi Seamount are dominantly tholeiitic basalt containing 6.25-7.25% MgO. None of the limu o Pele samples from Lo'ihi Seamount contains less than 5.57% MgO, suggesting that higher viscosity magmas do not form lava bubbles. The dissolved CO2 and H2O contents of 7 of the limu o Pele fragments indicate eruption at 1200??300 m depth (120??30 bar). These pressures exceed that generally thought to limit steam explosions. We conclude that hydrovolcanic eruptions are possible, with appropriate pre-mixing conditions, at pressures as great as 120 bar.

  13. Notas sobre la irregularidad. Reconsideración de lo pintoresco

    Directory of Open Access Journals (Sweden)

    Manuel de Prada

    2007-07-01

    Full Text Available El gusto por lo pintoresco, cuyos principios fueron definidos en la segunda mitad del siglo XVIII, ha dado lugar, en arquitectura, al gusto por la irregularidad. La irregularidad pintoresca comenzó representando la libertad natural. Después, enfrentada al orden clasicista, se consideró una condición de la arquitectura funcional. El orden y la regularidad, en consecuencia, fueron perdiendo el poder que tuvieron en otros momentos de la historia para representar el orden natural de las cosas.

  14. 2005. aasta arhitektuurivõistlused

    Index Scriptorium Estoniae

    2005-01-01

    Tulemused: Viljandi Metsakalmistu kabel: I - Andres Lember (Male Arhitektid); Tartu Vabaduse sild: I - Stanislav Shulman, Oleg Samohhin (Peterburi, Transmost); Tartu Mõisavahe kvartali hoonestuskava: I .- Ott Kadarik, Villem Tomiste, Mihkel Tüür (Kosmos); Seewaldi ala planeerimine: I - Jüri Martson, Rasmus Reinolt, Ivo-Martin Veelma (Lokomotiiv); Rotermanni kvartali arhitektuurivõistlus: I - Kosmos; aasta betoonehitis 2004: Ülemiste hotell Tallinnas, Martin Aunin; Lasnamäe Jumalaema kirik: I - Oleg Zhemtshugov (AB Z-Projekt), Nikolai Djatko, Jevgeni Kolomenkin; Pärnu vanalinna ja rannapiirkonna tänavakaubanduse inventari ja jäätmejaamade kujundus: I - Peeter Varrak; Kihnu sadamaala planeerimise ja hoonestamise ideevõistlus: I - Siiri Vallner, Kaire Nõmm, Helina Lass, Anna-Liisa Unt (Kavakava); Narva kolledzhi uus hoone: I - Katrin Koov, S. Vallner (Kavakava) ja Indrek Peil (Head Arhitektid); Randvere algkooli hoone: II - Inga Raukas (Arhitektuuriagentuur); Tartu Toomemäe valgustuse ja arhitektuursete väikevormide ideevõistlus: II - K. Koov ja Heidi Urb (Kabvakava) ning Maarja Kask, Ralf Lõoke, Karli Luik (Salto); Metsakalmistu arhitektide kalmeala: I - M. Kask, R. Lõoke; Skoone bastioni ideevõistlus: I - M. Kask, R. Lõoke, K. Luik (Salto); Mahtra talurahvamuuseum: I -Tomomi Hayashi, Hanno Grossschmidt; parim eramu 2004-2005: metallmaja Tabasalus, Muru & Pere; Tallinna loomaaia läänevärav: I - I. Raukas, Monika Löve, Oliver Soomets; parim puitehitis 2005: Naba lasteaed Pirital, arhitektid Vahur Sova, Lauri Saar, sisearhitekt Mari Tosmin; Pae karjääri revitaliseerimine: III - Veronika Valk, Kerli Raamsalu

  15. George Sandi "Consuelo" / Ott Ojamaa

    Index Scriptorium Estoniae

    Ojamaa, Ott, 1926-1996

    2010-01-01

    Arvustus: Sand, George, pseud. Consuelo. 1-2. : romaan / [prantsuse keelest tõlkinud Leili-Maria Kask järelsõna ja märkused: Ott Ojamaa]. Tallinn : Eesti Riiklik Kirjastus, 1961. (Suuri sõnameistreid). 2. tr. ilmus 1988. a.

  16. Kaarma Bold Italic / Tõnu Kaalep

    Index Scriptorium Estoniae

    Kaalep, Tõnu, 1966-

    2000-01-01

    Raamatukujundajast Jüri Kaarmast ja tema loomingust. Kommenteerib abikaasa Eve Kask. J. Kaarma sellest, miks temast sai raamatukujundaja, oma parimatest õpetajatest (E. Kärmas, I. Paul), töömeetodist, loomingust, uue kirjatüübi konstrueerimisest jm

  17. Kaarma Bold Italic / Tõnu Kaalep

    Index Scriptorium Estoniae

    Kaalep, Tõnu, 1966-

    2011-01-01

    Raamatukujundajast Jüri Kaarmast ja tema loomingust. Kommenteerib abikaasa Eve Kask. J. Kaarma sellest, miks temast sai raamatukujundaja, oma parimatest õpetajatest (E. Kärmas, I. Paul), töömeetodist, loomingust, uue kirjatüübi konstrueerimisest jm

  18. Eesti oopereid Nargen-festivalil / Evi Arujärv

    Index Scriptorium Estoniae

    Arujärv, Evi, 1953-

    2011-01-01

    Timo Steineri ooperist "Kask pead", libretist Maarja Kangro, lavastaja Mart Koldits, dirigent Tõnu Kaljuste ja Anti Marguste mini mono-ooperite A. H. Tammsaare, August Kitzbergi ja Oskar Lutsu tekstidele "Andreses monoloogid", "Tiina monoloogid", "Arno monoloogid", dirigent Tõnu Kaljuste,

  19. Rootsi näitleja Tomas Norström tahab Eesti filmis mängida / Andres Laasik

    Index Scriptorium Estoniae

    Laasik, Andres, 1960-2016

    2000-01-01

    Ervin Õunapuu uues mängufilmis "Inglid lumes" soovib kaasa teha Rootsi tuntud filmi- ja teatrinäitleja. Produtsent Valdo Kask püüab filmi kaasata ka Rootsi rahastaja. Võtted peaksid algama järgmisel aastal

  20. 90-aastane Tallinna Polütehnikum - ainus omataoline / Sirje Tohver

    Index Scriptorium Estoniae

    Tohver, Sirje

    2005-01-01

    Polütehnikumi vilistlastest õpetajate (Heiki Tähis, Andres Ojalill, Jüri Jakubovitš, Hugo Tartlan, Hergi Kruusimaa, Tiina Karja, Priit Kalman, Ardi Priks, Jaan Kuus, Jüri Puhang, Vello Vanem, Rein Kask, Kalle Sammal, Ain Saaret) meenutusi

  1. Archivo y reducto. Sobre la inscripción de lo mapuche en Chile y Argentina

    Directory of Open Access Journals (Sweden)

    André Menard

    2011-09-01

    Full Text Available Este artículo explora las distintas formas de inscripción de lo mapuche tanto en Chile como en Argentina tras la conquista de los territorios indígenas de la Araucanía y la Patagonia a fines del siglo XIX. Se plantea la hipótesis de una diferencia en esta inscripción basada en los destinos que en estos contextos tuvieron por un lado los cuerpos mapuche y por otro los papeles y documentos producidos y atesorados por estas poblaciones antes de su incorporación a las soberanías de ambos estados. Se ve cómo en el caso argentino se favoreció la inscripción museográfica de los cuerpos físicos y la paralela inscripción archivística de los documentos, favoreciendo una relegación de lo mapuche al rango de elemento historiográfico y antropológico del pasado y carente de vigencia política en el presente. Mientras que en el caso chileno se constata una inscripción poblacional de los cuerpos mapuches asociada a cierta ideología mestiza y estatal por la cual lo mapuche fue dotado de cierta vigencia racial. Surge así la noción de "reducto" como categoría mediante la cual se analizan las ambivalencias que en ambos casos ha tenido esta inscripción por la que lo mapuche ha podido funcionar como capital patrimonial de la soberanía nacional (asociada a principios de identidad y autoctonía o por el contrario como mero resto de una vida o una cultura indígena, que persiste y se administra en los márgenes políticos e históricos de esta misma soberanía nacional.

  2. Interference Measurements in the European 868 MHz ISM Band with Focus on LoRa and SigFox

    DEFF Research Database (Denmark)

    Lauridsen, Mads; Vejlgaard, Benny; Kovács, István

    2017-01-01

    In this measurement study the signal activity and power levels are measured in the European Industrial, Scientific, and Medical band 863-870 MHz in the city of Aalborg, Denmark. The target is to determine if there is any interference, which may impact deployment of Internet of Things devices....... The focus is on the Low Power Wide Area technologies LoRa and SigFox. The measurements show that there is a 22-33 % probability of interfering signals above -105 dBm within the mandatory LoRa and SigFox 868.0-868.6 MHz band in a shopping area and a business park in downtown Aalborg, which thus limits...... the potential coverage and capacity of LoRa and SigFox. However, the probability of interference is less than 3 % in the three other measurement locations in Aalborg. Finally, a hospital and an industrial area are shown to experience high activity in the RFID subband 865-868 MHz, while the wireless audio band...

  3. Analyses and optimization of Lee propagation model for LoRa 868 MHz network deployments in urban areas

    Directory of Open Access Journals (Sweden)

    Dobrilović Dalibor

    2017-01-01

    Full Text Available In the recent period, fast ICT expansion and rapid appearance of new technologies raised the importance of fast and accurate planning and deployment of emerging communication technologies, especially wireless ones. In this paper is analyzed possible usage of Lee propagation model for planning, design and management of networks based on LoRa 868MHz technology. LoRa is wireless technology which can be deployed in various Internet of Things and Smart City scenarios in urban areas. The analyses are based on comparison of field measurements with model calculations. Besides the analyses of Lee propagation model usability, the possible optimization of the model is discussed as well. The research results can be used for accurate design, planning and for preparation of high-performance wireless resource management of various Internet of Things and Smart City applications in urban areas based on LoRa or similar wireless technology. The equipment used for measurements is based on open-source hardware.

  4. LOS BUENOS HÁBITOS DE ESCRITURA, EMPIEZAN EN LA ESCUELA, LO MISMO PARA DIESTROS QUE PARA ZURDOS

    Directory of Open Access Journals (Sweden)

    José Quintanal Díaz

    2011-01-01

    Full Text Available Los buenos hábitos de escritura, empiezan en la escuela, lo mismo para diestros que zurdos. La escritura es uno de los aprendizajes que se automatizan con mayor rapidez en los primeros estadios del desarrollo infantil. Esto supone que la escuela deba estar atenta para conseguir su correcta aplicación, de modo que los pequeños integren este hábito con corrección. Lo mismo diestros que zurdos; para todos, un buen aprendizaje de esta destreza les va a suponer no sólo contar con una mejora en su comunicación, pues su escrito resultará más legible y presentará una mayor calidad técnica, sino que se prevendrán las secuelas propias de su posterior ejecución. El presente estudio analiza cómo adecuar el proceso de enseñanza de la escritura desde la escuela infantil.

  5. Construction and Capacity Analysis of High-Rank LoS MIMO Channels in High Speed Railway Scenarios

    Directory of Open Access Journals (Sweden)

    Jingya Yang

    2012-01-01

    Full Text Available The validity of the maximum capacity criterion applied to realize high-rank line-of-sight (LoS multiple-input multiple-output (MIMO channels is investigated for high speed railway scenarios. Performance is evaluated by ergodic capacity. Numerical results demonstrate that by simply adjusting antenna spacing according to the maximum capacity criterion, significant capacity gains are achievable. We find relatively low sensitivity of the system to displacements from the optimal point and angle in relatively short range. Thus, we present two proposals to reconfigure antenna arrays so as to maximize LoS MIMO capacity in the high speed railway scenarios

  6. Froehlih coupling with LO-phonons in quantum dots. Huang-Rhys phenomena

    International Nuclear Information System (INIS)

    Banyai, L.

    1991-01-01

    The quantum coupling between photoexcited carriers and longitudinal optical (LO) phonons in zero-dimensional structures (quantum dots) is considered. A classical model of the electron-phonon interaction is presented. The polarization field is then quantized and the Huang-Rhys phenomenon is observed. Effects induced by the quantization of the electron system are also considered. Finally, the modifications of the theory due to specific aspects of quantum dots are discussed. (Author)

  7. Estima de la abundancia de Palomas (Columba livia var. de la ciudad de Barcelona y valoración de la efectividad del control por eliminación de individuos

    Directory of Open Access Journals (Sweden)

    Senar, J. C.

    2009-05-01

    Full Text Available Estimate of the abundance of pigeons (Columba livia var. in the city of Barcelona and evaluation of effectiveness of elimination measures Culling is one of the most commonly used methods to control urban pigeon populations. The Barcelona Public Health Agency (ASPB eliminated a total of 227,479 pigeons using this technique between 1991 and 2006. We compared the estimate of abundance of pigeons in Barcelona city in 1991 (183.667 ± 14.914 with that in 2006 ( 256.663 ± 26.210 (CI 95%. While pigeon density did not increase in the city centre during this period, density in a ring around the city increased significantly, leading to a general increase in the urban population of these birds. The number of complaints regarding pigeons received per district did not correlate with abundance. ASPB culling per district correlated with abundance and not with numbers of complaints received, indicating interventions generally followed a technical protocol. Pigeon density per district correlated significantly with the human population density but not with the total number of inhabitants. Findings indicate the effectiveness of culling is low in this setting and suggest greater emphasis should be placed on control measures centered on limiting factors, particularly reduction of food availability and nest removal.

  8. Eesti foto Berliinis

    Index Scriptorium Estoniae

    2003-01-01

    Berliinis Giedre Bartelti galeriis kaheksa eesti kunstniku fotonäitus "(Un)Dressed Body in the Baltic Photo Art vol. 2 : Estonia" - Ene-Liis Semper, Peeter Laurits, Mark Raidpere, Liina Siib, Ly Lestberg, Mare Tralla, Margot Kask ja Tanel Veenre

  9. Crop milk protein is synthesised following activation of the IRS1/Akt/TOR signalling pathway in the domestic pigeon (Columba livia).

    Science.gov (United States)

    Hu, X-C; Gao, C-Q; Wang, X-H; Yan, H-C; Chen, Z-S; Wang, X-Q

    2016-12-01

    The experiment was conducted to study whether insulin receptor substance 1 (IRS1) / Protein kinase B (Akt)/target of the rapamycin (TOR) signalling pathway activation stimulates crop milk protein synthesis in the domestic pigeon (Columba livia). Crop milk was collected from ten 1-d-old squabs and analysed for nutrient content. During the non-breeding period and the first day of lactation, blood samples were collected from 5 pairs of breeding pigeons and the levels of prolactin and insulin were determined. Crop samples were collected from 5 pairs of breeders at d 14 and 16 of the incubation period and d 1, 3 and 7 of the lactation period. Crop samples were evaluated for changes in crop weight and thickness and changes in the expression patterns of IRS1/Akt/TOR signalling pathway-related proteins. The results demonstrated that prolactin induces a gradual increase in the relative weight and thickness of the crop, with crops reaching a maximum size at the third day of lactation. Pigeon crop milk contains 64.1% crude protein and 29.7% crude fat based on dry weight. Serum prolactin and insulin levels in the lactation period were significantly higher than those in the non-breeding period. Compared with non-breeding pigeons, the expression of the phosphorylated IRS1 phosphorylated Akt, phosphorylated TOR, phosphorylated ribosomal protein S6 kinase, phosphorylated S6, phosphorylated eukaryotic initiation factor 4E binding protein 1 and eukaryotic initiation factor 4E were significantly up-regulated in the crop of pigeons in the lactation period. In conclusion, prolactin might induce changes in crop tissue and form the physiological structure for crop milk synthesis. Furthermore, the synthesis of crop milk protein is regulated by activation of the IRS1/Akt/TOR signalling pathway.

  10. Prevalence of ectoparasites in free-range backyard chickens, domestic pigeons (Columba livia domestica) and turkeys of Kermanshah province, west of Iran.

    Science.gov (United States)

    Rezaei, Farid; Hashemnia, Mohammad; Chalechale, Abdolali; Seidi, Shahin; Gholizadeh, Maryam

    2016-06-01

    This study was carried out on free-range backyard chickens, domestic pigeons (Columba livia domestica) and turkeys from May 2012 to April 2013 to determine the prevalence and identify the species of ectoparasites in Kermanshah province, west of Iran. Of the total of 600 free-range backyard chickens (185 ♂ and 415 ♀), 700 domestic pigeons (278 ♂ and 422 ♀) and 150 turkeys (53 ♂ and 97 ♀), 389 (64.83 %), 608 (86.85 %) and 54 (36 %) were infected with one or more parasites respectively. Eleven ectoparasites species including five of lice (50.16 % Menacanthus stramineus, 13.66 % Menopon gallinae, 4.83 % Cuclotogaster heterographus, 5.16 % Goniocotes gallinae, 2.33 % Goniodes gigas), three of mites (26.33 % Dermanyssus gallinae, 8.5 % Ornithonyssus bursa, 7 % Cnemidocoptes mutans), one of tick (78.66 % Argas persicus) and two of flea (12.33 % Echidnophaga gallinacea, 2 % Pulex irritans) were found in the backyard chickens. The domestic pigeons were infected with six species of parasites including: Columbicola columbae (61.7 %), M. gallinae (10.43 %), M. stramineus (9 %), D. gallinae (8.28 %), Argas reflexus (74.14 %) and Pseudolynchia canariensis (27.7 %). The ectoparasites species recorded in turkeys were M. gallinae (14 %), M. stramineus (8 %), D. gallinae (12.66 %), C. mutans (6 %), A. persicus (24.66 %) and E. gallinacean (6 %). This is the first survey to determine the prevalence and identify the species of ectoparasites among free-range backyard chicken, domestic pigeons and turkeys in Kermanshah province. The high prevalence rate of ectoparasites in free-range backyard chickens and domestic pigeons indicates that parasitic infection is a common problem in this area.

  11. Analysis of Latency and MAC-layer Performance for Class A LoRaWAN

    DEFF Research Database (Denmark)

    Sørensen, René Brandborg; Kim, Dong Min; Nielsen, Jimmy Jessen

    2017-01-01

    We propose analytical models that allow to investigate the performance of Long Range Wide Area Network (LoRaWAN) uplink in terms of latency, collision rate, and throughput under the constraints of the regulatory duty cycling, when assuming exponential inter-arrival times. Our models take into acc...

  12. Lo público y la educación en América Latina: ideas, intereses y nuevas instituciones

    Directory of Open Access Journals (Sweden)

    Juan Carlos Tedesco

    2014-12-01

    Full Text Available Mi contribución en esta oportunidad es poner este debate en un contexto no solo de Chile sino más general, a nivel de América Latina en su conjunto y luego relacionarlo con una parte del mundo desarrollado y en desarrollo, bajo la forma de este modelo de nuevo capitalismo en el cual estamos todos inmersos. En la dimensión histórica tenemos el tema de lo público; lo público ha cambiado históricamente y su significado ha cambiado en especial en la educación, ya que tenemos tres grandes momentos, el primero de ellos en el siglo XIX donde lo público estuvo asociado a la construcción del Estadonación, esta idea de que la educación tenía que ser responsabilidad pública estuvo fuertemente asociada a la construcción de adhesión a la nación por encima de los particularismos religiosos, étnicos o lingüísticos y por eso la educación obligatoria, la educación gratuita, la educación laica; evidentemente esto define el papel de lo público asociado al Estado y lo público asociado a ciertos contenidos educativos, en América Latina siempre tuvo vigencia precaria, ningún país logró cumplir con los postulados de incorporar al conjunto de la población a la educación primaria obligatoria y de esa manera entonces prepararlo para el ejercicio de la ciudadanía en mayor o menor medida quizás en los países del cono sur, Argentina, Uruguay, Chile; Costa Rica en América Central, avanzaron pero aun así con muchas limitaciones que tuvo el cumplimiento de la educación obligatoria durante todo ese período porque admitamos que las ideas de construir un Estado-nación con participación ciudadana universal era el proyecto ilustrado. No sirve el proyecto de las élites económicamente dominantes en nuestro país, esos sectores lograron controlar de alguna manera el Estado y poder político y por eso su único instrumento fue la ley, pero la ley aparecía más como un objetivo que como una herramienta. El segundo momento de cambio de lo

  13. Modificar la condición del pobre o la raison d'être de lo democrático

    Directory of Open Access Journals (Sweden)

    Francisco Tomás González Cabañas

    2016-10-01

    Full Text Available Desde hace décadas tanto la ciencia política como el enfoque de lo político desde lo filosófico debe resignificar el contrato social, redefinir el principio de igualdad, y acotar el significante extenso y polisémico de lo democrático, para consignarle un valor diferente, sobre todo para aquellos que el estado los tiene para la obligación sin velar por sus derechos, para que en la jornada electoral, a estos invisibilizados se los empodere con el valor de cinco a cada uno de sus votos, dignificándolos para sacarlos del estado de víctimas que impone el prebendedarismo, la compra de votos o los bolsones de mercadería (una práctica muy extendida en latinoamérica que en definitiva carcome y deslegitima la democracia actual que tiene como finalidad restaurar el contrato social y reconstruir el principio de igualdad de acuerdo a categorías aún no transitadas. Creemos que de tal manera, a nivel teórico lo democrático estará acendrado en una representatividad taxativa y explícita, que será la de tener como prioridad el sujeto histórico de la condición (la del pobre para modificarla a los efectos de abandonar el actual sujeto histórico, el individuo y su individualismo, que es contradictorio en su funcionalidad y definición.

  14. Eesti Tervishoiu Muuseum = Estonian Health Care Museum / Raili Paling, Liis Lindvere, Kadri Kaldam ; kommenteerinud Kadri Liimal

    Index Scriptorium Estoniae

    Paling, Raili

    2016-01-01

    Eesti Tervishoiu Muuseumi (Tallinn, Lai tn. 30) renoveeritud interjöör ja püsiekspositsioon. Autorid Jelena Altmäe, Kadri Kaldam, Andrus Kõresaar, Indrek Mikk, Jaanus Männik, Lea Laidra, Liis Lindvere, Raili Paling; kuraator Ülle Kask

  15. Rein Raua kuraatoridebüüt

    Index Scriptorium Estoniae

    2001-01-01

    Hausi galeriis Rein Raua kureeritud rahvusvaheline kunstinäitus "KevadSuviSügisTalv. Murdumispunkt". Esinevad Eve Kask, Peeter Laurits, Dainius Lickevicius, Rehka Menon, Mall Nukke, Herkki Merila, Jorma Puranen, Rosita Raud, Ene-Liis Semper, Liina Siib, S. ja P. Stanikas

  16. Kohtu ette jõudis Amigo peksuvideo hävitamine / Rasmus Kagge

    Index Scriptorium Estoniae

    Kagge, Rasmus, 1977-

    2008-01-01

    Ööklubi Amigo peksmisskandaali uurinud prokurör Saskia Kask saatis kohtu ette lokaali vahetuse vanema ja turvatehnika hooldaja, keda süüdistatakse jõhkra videosalvestise kui kaaluka süütõendi hävitamises. Lisa: Skandaali kronoloogia

  17. Tüdruk filmis, kuidas kasuisa teda väärkohtles / Kadri Ibrus

    Index Scriptorium Estoniae

    Ibrus, Kadri

    2007-01-01

    Alaealiste seksuaalse väärkohtlemisega seotud kohtuasjast, mida kommenteerivad Põhja ringkonnaprokuratuuri prokurör Saskia Kask ja Põhja politseiprefektuuri lastekaitsetalituse juhtivinspektor Pille Alaver. Lisatud statistilised andmed 2006. aastal algatatud ja kohtusse saadetud laste seksuaalse väärkohtlemis kohtuasjadest

  18. On tegu ja nägu / Ralf Lõoke ; interv. Karin Paulus

    Index Scriptorium Estoniae

    Lõoke, Ralf, 1978-

    2008-01-01

    Tartu Kesklinna kool valmis 1912. aastal arhitekt Arved Eichhorni projekti järgi. 1965. aastal valmis Udo Tiirmaa projekti järgi juurdeehitis. 2007. aastal avati kooli laiendus, autoriteks arhitektuuribüroo Salto arhitektid Maarja Kask, Karli Luik ja Ralf Lõoke

  19. Eesti Lähimineviku Okupatsioonide Muuseumi arhitektuurivõistlus : okupatsiooni igaveseks jäädvustamiseks = Architectural Competition of the Museum of Recent Past Occupations in Estonia : for Eternal Remembrance of the Occupation / Leonhard Lapin

    Index Scriptorium Estoniae

    Lapin, Leonhard, 1947-

    2001-01-01

    Zürii koosseis, võistlusest, võidutööst. Preemiad: I - Indrek Peil, Siiri Vallner; II - Tiina Teng, Peeter Loo; III - Reio Avaste; ostud - Andres Kask ning Markus Kaasik, Kalle Komissarov, Andres Ojari, Indrek Tiigi ja Ilmar Valdur. 5 ill.

  20. Lugemisaasta tõstis raamatukogude mainet / Reet Olevsoo

    Index Scriptorium Estoniae

    Olevsoo, Reet, 1956-

    2011-01-01

    28. veebruaril 2011 toimunud ERÜ aastakoosolekul tehti kokkuvõtteid 2010. a tegevusest ning anti üle aasta- ja teenetepreemiad. Aastapreemia 2010 pälvis Külli Solo ning teenetepreemia anti Ivi Tingrele, ERÜ auliikmeteks valiti Elle Tarik ja Linda Kask

  1. Rahvusvaheline "Scripta manent II" Tallinnas

    Index Scriptorium Estoniae

    2000-01-01

    Eduard Taska 110. sünniaastapäevale pühendatud rahvusvaheline köitekunsti- ja kalligraafianäitus "Scripta manent II" Tallinna Kunstihoones. Köitekunsti osas pälvis "kuldraamatu" Marielle Liivat, ergutusauhinnad: Marje Kask, Kadi Kiipus, Urve Kolde

  2. Rein Veidemann elab vana kodulinna provintslusilminguid valusalt läbi / Rein Veidemann ; interv. Rein Hallik

    Index Scriptorium Estoniae

    Veidemann, Rein, 1946-

    2007-01-01

    Pärnust pärit kirjanik-poliitik Rein Veidemann meenutab lapsepõlve, kooliaega, laulvat revolutsiooni. Vt. samas: Rein Veidemann; Kuidas Veidemann okupandiks sattus; Veidemann tegi koos Ojakääruga Rääma kooli hümni; Rein Kask. Meenutus

  3. Jõhvi kunstikoolis tehti märulit / Tiia Linnard

    Index Scriptorium Estoniae

    Linnard, Tiia, 1962-

    2002-01-01

    Tartu Ülikooli maalikunsti 6 tudengit ja õppejud Jüri Kask tegid Jõhvi kunstikoolis action paintingut (grupimaalimine). Jaan Elkeni kommentaarid action painting tüüpi kunsti ajaloost ja enda grupiviisilisest maalimisest 1999. a. koos Marko Mäetamme ja Kaido Olega.

  4. Lo andino en los murales de Jesús Flores Walpaq

    Directory of Open Access Journals (Sweden)

    Mario Leandro Arce De Piero

    2018-04-01

    Full Text Available En este trabajo exploramos los modos en que lo andino se construye en la producción muralística del artista plástico Jesús Flores Walpq. Nos enfocamos en la definición de rasgos que configuran el centro representacional de lo andino y el proceso de deslizamientos semánticos y retóricos en la enunciación. A medida que el artista fue construyéndose como enunciador autorizado, la construcción del relato en el mural fue variando considerablemente. Si bien no se registran diferencias radicales en el empleo del color, la forma, la línea, etc. sí es significativa la variación en cuanto a la retórica que incorpora al indio en el discurso pictórico. El recorrido parte de la observación de los cambios en la construcción del yo-artista, que parte de la problematización del rol de productor de arte académico hasta plantear rol de “obrero del arte” comprometido con su contexto político, ideológico y artístico. Esto significó para Flores Walpaq adherir a las luchas reivindicatorias por los derechos indígenas. En conjunto, este texto nos lleva a problematizar sobre las condiciones de producción de la pregunta por la identidad en este contexto y las respuestas que los sujetos ensayan y modifican.

  5. Elustiil = Lifestyle / Urve Kask

    Index Scriptorium Estoniae

    Kask, Urve

    2006-01-01

    Töö- ja pereaastatel on leibkonna jaoks oluline eelarve, mis annab ette kulutuste mahu. Naiste ja meeste leibkondade sissetuleku tase on erinev ja toob esile sugudevahelise tarbimisstruktuuri erinevuse. Leibkonnaliikmete tarbimisstruktuur leibkonnapea soo järgi. Lastega ja lasteta leibkondade tarbimisstruktuur. Diagrammid

  6. Eesti arhitektuuriuudised / Aale Kask

    Index Scriptorium Estoniae

    Kask, Aale

    2007-01-01

    Tõnu Laigu ja Tõnu Laanemäe projekteeritud "kergejõustikumaneezh" Pärnus. Peterburi arhitekti Peter Schreibergi projekteeritud Kaubanduspank Tallinnas kohandati hotelliks, sõjas hävinud hoovipoolse tiiva asemele projekteeris juurdeehitise Martin Aunin. Arhitektuurivõistlusest Europan 9. Uuest elamurajoonist Pärnus jõe kaldal, arhitekt Siiri Vallner

  7. Eesti arhitektuuriuudised / Aale Kask

    Index Scriptorium Estoniae

    Kask, Aale

    2007-01-01

    "Eesti betoonehitis 2006" preemia saanud Hindrek Kesleri projekteeritud Luku-Experdi maja Tartu maanteel (Büroo AB Zero), Aasa külalistemajaks Raivo Mändmaa poolt renoveeritud vana maja Viljandis, skulptor Jass Kaselaane kavandite järgi valminud maasikad Viljandi linnas, mis tähistavad teed Paul Kondase keskusesse, põhumaja Nina külas

  8. Vaatamisest teateni / Margot Kask

    Index Scriptorium Estoniae

    Kask, Margot

    2006-01-01

    Maastiku mõiste arengust läbi kunstiajaloo ning nägemise ja kujutamise vastastikustest seostest. Reimo Võsa Tangsoo (sünd. 1976), Eve Kiileri (sünd. 1962), Ivar Veermäe (sünd. 1982) ja Taavi Suitsu maastikufotodest

  9. Enhancement of the HIF-1α/15-LO/15-HETE axis promotes hypoxia-induced endothelial proliferation in preeclamptic pregnancy.

    Directory of Open Access Journals (Sweden)

    Dandan Yuan

    Full Text Available Preeclampsia (PE is an extremely serious condition in pregnant women and the leading cause of maternal and fetal morbidity and mortality. Despite active research, the etiological factors of this disorder remain elusive. The increased release of 15-hydroxyeicosatetraenoic acid (15-HETE in the placenta of preeclamptic patients has been studied, but its exact role in PE pathogenesis remains unknown. Mounting evidence shows that PE is associated with placental hypoxia, impaired placental angiogenesis, and endothelial dysfunction. In this study, we confirmed the upregulated expression of hypoxia-inducible factor 1α (HIF-1α and 15-lipoxygenase-1/2 (15-LO-1/2 in patients with PE. Production of the arachidonic acid metabolite, 15-HETE, also increased in the preeclamptic placenta, which suggests enhanced activation of the HIF-1α-15-LO-15-HETE axis. Furthermore, this study is the first to show that the umbilical cord of preeclamptic women contains significantly higher serum concentrations of 15-HETE than that of healthy pregnant women. The results also show that expression of 15-LO-1/2 is upregulated in both human umbilical vein endothelial cells (HUVECs collected from preeclamptic women and in those cultured under hypoxic conditions. Exogenous 15-HETE promotes the migration of HUVECs and in vitro tube formation and promotes cell cycle progression from the G0/G1 phase to the G2/M + S phase, whereas the 15-LO inhibitor, NDGA, suppresses these effects. The HIF-1α/15-LO/15-HETE pathway is therefore significantly associated within the pathology of PE.

  10. Scanning light-sheet microscopy in the whole mouse brain with HiLo background rejection

    Science.gov (United States)

    Mertz, Jerome; Kim, Jinhyun

    2010-01-01

    It is well known that light-sheet illumination can enable optically sectioned wide-field imaging of macroscopic samples. However, the optical sectioning capacity of a light-sheet macroscope is undermined by sample-induced scattering or aberrations that broaden the thickness of the sheet illumination. We present a technique to enhance the optical sectioning capacity of a scanning light-sheet microscope by out-of-focus background rejection. The technique, called HiLo microscopy, makes use of two images sequentially acquired with uniform and structured sheet illumination. An optically sectioned image is then synthesized by fusing high and low spatial frequency information from both images. The benefits of combining light-sheet macroscopy and HiLo background rejection are demonstrated in optically cleared whole mouse brain samples, using both green fluorescent protein (GFP)-fluorescence and dark-field scattered light contrast.

  11. Intelektuālo darbinieku motivācija

    OpenAIRE

    Šilovska, Elīna

    2013-01-01

    Bakalaura darba mērķis ir izpētīt uzņēmuma Color Expert – Storch LV SIA darbinieku motivācijas sistēmu, tās īstenošanu darba procesā, novērtēt sistēmas efektivitāti un izstrādāt priekšlikumus tās pilnveidošanai. Darbs sastāv no 3 nodaļām. Pirmajā nodaļā pētīta motivācija jēdziena būtība, intelektuālo darbinieku loma un īpatnības. Otrajā nodaļā analizētas jaunākās motivācijas teorijas, kā arī vadītāja loma darbinieku motivācijā. Trešajā nodaļā veikts pētījums par uzņēmumu Color Expert – Sto...

  12. Natural Infections With Pigeon Paramyxovirus Serotype 1: Pathologic Changes in Eurasian Collared-Doves ( Streptopelia decaocto) and Rock Pigeons ( Columba livia) in the United States.

    Science.gov (United States)

    Isidoro-Ayza, M; Afonso, C L; Stanton, J B; Knowles, S; Ip, H S; White, C L; Fenton, H; Ruder, M G; Dolinski, A C; Lankton, J

    2017-07-01

    Pigeon paramyxovirus serotype 1 (PPMV-1) is a globally distributed, virulent member of the avian paramyxovirus serotype 1 serogroup that causes mortality in columbiformes and poultry. Following introduction into the United States in the mid-1980s, PPMV-1 rapidly spread causing numerous mortality events in Eurasian collared-doves ( Streptopelia decaocto) (ECDOs) and rock pigeons ( Columba livia) (ROPIs). The investigators reviewed pathological findings of 70 naturally infected, free-ranging columbiforms from 25 different mortality events in the United States. Immunohistochemistry targeting PPMV-1 nucleoprotein was used to determine the tissue distribution of the virus in a subset of 17 birds from 10 of the studied outbreaks. ECDOs (61 birds) and ROPIs (9 birds) were the only species in which PPMV-1-associated disease was confirmed by viral isolation and presence of histologic lesions. Acute to subacute tubulointerstitial nephritis and necrotizing pancreatitis were the most frequent histologic lesions, with immunolabeling of viral antigen in renal tubular epithelial cells and pancreatic acinar epithelium. Lymphoid depletion of bursa of Fabricius and spleen was common, but the presence of viral antigen in these organs was inconsistent among infected birds. Hepatocellular necrosis was occasionally present with immunolabeling of hypertrophic Kupffer cells, and immunopositive eosinophilic intracytoplasmic inclusion bodies were present in hepatocytes of 1 ECDO. Immunopositive lymphocytic choroiditis was present in 1 ECDO, while lymphocytic meningoencephalitis was frequent in ROPIs in absence of immunolabeling. This study demonstrates widespread presence of PPMV-1 antigen in association with histologic lesions, confirming the lethal potential of this virus in these particular bird species.

  13. Natural infections with pigeon paramyxovirus serotype 1: Pathologic changes in Eurasian collared-doves (Streptopelia decaocto) and rock pigeons (Columba livia) in the United States

    Science.gov (United States)

    Isidoro Ayza, Marcos; Afonso, C.L.; Stanton, J.B.; Knowles, Susan N.; Ip, Hon S.; White, C. LeAnn; Fenton, Heather; Ruder, M.G.; Dolinski, A. C.; Lankton, Julia S.

    2017-01-01

    Pigeon paramyxovirus serotype 1 (PPMV-1) is a globally distributed, virulent member of the avian paramyxovirus serotype 1 serogroup that causes mortality in columbiformes and poultry. Following introduction into the United States in the mid-1980s, PPMV-1 rapidly spread causing numerous mortality events in Eurasian collared-doves (Streptopelia decaocto) (ECDOs) and rock pigeons (Columba livia) (ROPIs). The investigators reviewed pathological findings of 70 naturally infected, free-ranging columbiforms from 25 different mortality events in the United States. Immunohistochemistry targeting PPMV-1 nucleoprotein was used to determine the tissue distribution of the virus in a subset of 17 birds from 10 of the studied outbreaks. ECDOs (61 birds) and ROPIs (9 birds) were the only species in which PPMV-1-associated disease was confirmed by viral isolation and presence of histologic lesions. Acute to subacute tubulointerstitial nephritis and necrotizing pancreatitis were the most frequent histologic lesions, with immunolabeling of viral antigen in renal tubular epithelial cells and pancreatic acinar epithelium. Lymphoid depletion of bursa of Fabricius and spleen was common, but the presence of viral antigen in these organs was inconsistent among infected birds. Hepatocellular necrosis was occasionally present with immunolabeling of hypertrophic Kupffer cells, and immunopositive eosinophilic intracytoplasmic inclusion bodies were present in hepatocytes of 1 ECDO. Immunopositive lymphocytic choroiditis was present in 1 ECDO, while lymphocytic meningoencephalitis was frequent in ROPIs in absence of immunolabeling. This study demonstrates widespread presence of PPMV-1 antigen in association with histologic lesions, confirming the lethal potential of this virus in these particular bird species.

  14. 77 FR 6793 - D'Lo Gas Storage, LLC; Notice of Intent To Prepare an Environmental Assessment for the PROPOSED D...

    Science.gov (United States)

    2012-02-09

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. CP12-39-000] D'Lo Gas Storage, LLC; Notice of Intent To Prepare an Environmental Assessment for the PROPOSED D'LO Gas Storage Project, Request for Comments on Environmental Issues, and Notice of Onsite Environmental Review The staff of the Federal Energy Regulatory Commission ...

  15. Cine imaginado: Posilitar que los estudiantes vean lo que leen

    OpenAIRE

    Whitaaker, Paul

    2001-01-01

    Cuando leemos en nuestra lengua materna, solemos crear imágenes en la mente acerca de la lectura. Es decir, la 'visualizamos'. Sin embargo, nos indica la investigación que a menudo esto no es cierto en cuanto a los que lean en una lengua extranjera, especialmente a los que tengan un nivel bajo. A pesar del hecho de que la actividad sea igual, las estrategias de lectura empleadas no lo son, y esto obstaculiza la comprensión. Este documento demuestra cómo, por animar a los principiantes a visua...

  16. Advances in LO2 Propellant Conditioning

    Science.gov (United States)

    Mehta, Gopal; Orth, Michael; Stone, William; Perry, Gretchen; Holt, Kimberly; Suter, John

    1994-01-01

    This paper describes the cryogenic testing and analysis that has recently been completed as part of a multi-year effort to develop a new, more robust and operable LO2 propellant conditioning system. Phase 1 of the program consisted of feasibility demonstrations ot four novel propellant conditioning concepts. A no-bleed, passive propellant conditioning option was shown for the first time to successfully provide desired propellant inlet conditions. The benefits of passive conditioning are reduced operations costs, decreased hardware costs, enhanced operability and increased reliability on future expendable launch vehicles In Phase 2 of the test program, effects of major design parameters were studied and design correlation for future vehicle design were developed. Simultaneously, analytical models were developed and validated. Over 100 tests were conducted with a full-scale feedline using LN2 as the test fluid. A circulation pump provided a range of pressure and flow conditions. The test results showed that the passive propellant conditioning system is insensitive to variations in many of the parameters. The test program provides the validation necessary to incorporate the passive conditioning system into the baseline of future vehicles. Modeling of these systems using computational fluid dynamics seems highly promising.

  17. Lo testimonial en la construcción de lo verosímil en la telenovela Montecristo. Un amor, una venganza

    Directory of Open Access Journals (Sweden)

    María Clara Musante

    2009-12-01

    Full Text Available Aborda las estrategias utilizadas por la telenovelas argentinas " Montecristi". Parte de la hipótesis de que esta ficción televisiva, que ha marcado un estilo nuevo dentro de la programación por su historia, estética, y producción ha incorporado en su relato una problemática histórica inédita para el género a través del registro de lo testimonial. Se trata de una primera aproximación teórica que busca fundamentar algunos aspectos poco trabajados como es el modo en que la telenovela definida como un relato ahistórico y volcado a contar el romance de la pareja central, gestiona ese pasaje por el cual se inscribe en el eje de su trama narrativa distintos aspectos de la historia reciente.

  18. Assessment of exposure Lo scattered radiation in interventional procedures using special proLecLive bismuth

    International Nuclear Information System (INIS)

    Soto Bua, M.; Medina Jimenez, E.; Vazquez Vazquez, R.; Santamaria Vazquez, F.; Otero Martinez, C.; Lobato Busto, R.; Luna Vega, V.; Mosquera Suero, J.; Sanchez Garcia, M.; Pombar Camean, M.

    2011-01-01

    There are currenLly marketed specific producta aimed aL reducing personnel exposure Lo radiation scatLered in cardiac catheLerization procedures, intervenLional radiology or elecLrophysiology. Our service has been proposed Lo study Lhe aLLenuation characLeristics of Lhe producL ''Drape Armour'' manufactured by Lhe company ''MicroLek'' IL ja flexible devices consLructed from an alloy of bismuth and sLeriliLy characLeristics and infection conLrol and fluid makes Lhem particularly suiLable for incorporaLing into Lhe operative field of the patient. To sLudy their behavior, Lhere have been staff dose measurementa representaLive of Lhe moaL common siLuaLions of exposure to scattered radiaLion in a typical procedure of intervenLion.

  19. N3LO corrections to jet production in deep inelastic scattering using the Projection-to-Born method

    Science.gov (United States)

    Currie, J.; Gehrmann, T.; Glover, E. W. N.; Huss, A.; Niehues, J.; Vogt, A.

    2018-05-01

    Computations of higher-order QCD corrections for processes with exclusive final states require a subtraction method for real-radiation contributions. We present the first-ever generalisation of a subtraction method for third-order (N3LO) QCD corrections. The Projection-to-Born method is used to combine inclusive N3LO coefficient functions with an exclusive second-order (NNLO) calculation for a final state with an extra jet. The input requirements, advantages, and potential applications of the method are discussed, and validations at lower orders are performed. As a test case, we compute the N3LO corrections to kinematical distributions and production rates for single-jet production in deep inelastic scattering in the laboratory frame, and compare them with data from the ZEUS experiment at HERA. The corrections are small in the central rapidity region, where they stabilize the predictions to sub per-cent level. The corrections increase substantially towards forward rapidity where large logarithmic effects are expected, thereby yielding an improved description of the data in this region.

  20. LoTe projektist saavad kasu nii koolid kui ka ülikoolid / Miia Rannikmäe

    Index Scriptorium Estoniae

    Rannikmäe, Miia, 1951-

    2008-01-01

    Tartu Ülikooli, Tallinna Ülikooli, Tallinna Tehnikaülikooli ja loodusainete õpetajaid ühendav projekt LoTe tähendab loodusteadusliku ja tehnoloogiaalase hariduse jätkusuutlikkuse tagamist kõigil õppetasanditel