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See detailObservations of the White Light Corona from Solar Orbiter and Solar Probe Plus
Howard, Russell; Thernisien, Arnaud; Vourlidas, Angelos et al

Conference (2011, December 08)

The SoloHI instrument on Solar Orbiter and the WISPR instrument on Solar Probe+ will make white light coronagraphic images of the corona as the two spacecraft orbit the Sun. The minimum perihelia for ... [more ▼]

The SoloHI instrument on Solar Orbiter and the WISPR instrument on Solar Probe+ will make white light coronagraphic images of the corona as the two spacecraft orbit the Sun. The minimum perihelia for Solar Orbiter is about 60 Rsun and for SP+ is 9.5 Rsun. The wide field of view of the WISPR instrument (about 105 degrees radially) corresponds to viewing the corona from 2.2 Rsun to 20 Rsun. Thus the entire Thomson hemisphere is contained within the telescope’s field and we need to think of the instrument as being a traditional remote sensing instrument and then transitioning to a local in-situ instrument. The local behavior derives from the fact that the maximum Thomson scattering will favor the electron plasma close to the spacecraft - exactly what the in-situ instruments will be sampling. SoloHI and WISPR will also observe scattered light from dust in the inner heliosphere, which will be an entirely new spatial regime for dust observations from a coronagraph, which we assume to arise from dust in the general neighborhood of about half way between the observer and the Sun. As the dust grains approach the Sun, they evaporate and do not contribute to the scattering. A dust free zone has been postulated to exist somewhere inside of 5 Rsun where all dust is evaporated, but this has never been observed. The radial position where the evaporation occurs will depend on the precise molecular composition of the individual grains. The orbital plane of Solar Orbiter will gradually increase up to about 35 degrees, enabling a very different view through the zodiacal dust cloud to test the models generated from in-ecliptic observations. In this paper we will explore some of the issues associated with the observation of the dust and will present a simple model to explore the sensitivity of the instrument to observe such evaporations. [less ▲]

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See detailObservations on detection, excretion and transmission of pigeon circovirus in adult, young and embryonic pigeons
Duchatel, Jean-Pierre ULg; Todd D; Smyth J et al

in Avian Pathology : Journal of the W.V.P.A (2006), 35

Infections with pigeon circovirus (PiCV) occur in young racing pigeons and pigeons raised for meat production and have been reported worldwide, but relatively little is known about the disease induced by ... [more ▼]

Infections with pigeon circovirus (PiCV) occur in young racing pigeons and pigeons raised for meat production and have been reported worldwide, but relatively little is known about the disease induced by PiCV infection. The aim of this study was to investigate how PiCV is transmitted. Using a sensitive polymerase chain reaction (PCR) test, the presence of PiCV was investigated in a wide range of samples from adult pigeons, embryos, breeders and young birds, which were derived from a racing loft that had a clinical history of ‘‘young pigeon sickness’’ and in which PiCV had been previously been diagnosed. Using PCR, PiCV DNA was detected in tissues of 13/20 apparently healthy older birds, aged from 1 to 9 years. Viral DNA was most commonly detected in the respiratory organs, including the trachea, pharynx and lung, followed by tissues such as the spleen, kidney and liver. It was also detected in the ovary and/or testes of some birds. This finding, and the detection of viral DNA in tissues from 8/22 embryos, suggested that PiCV may be vertically transmitted. Testing of pharyngeal and cloacal swabs, and blood samples, collected immediately before the death of the adult pigeons, failed to detect all birds found to be infected at necropsy, suggesting that testing of potential breeding birds would not enable exclusion of infected birds from breeding programmes. Additional PCR testing of cloacal swab samples obtained sequentially from 19 young pigeons showed that while four were excreting virus when 15 days old, only one bird was excreting at the time of weaning (28 days old). The detection of viral DNA in cloacal swab samples from 15.8% of the birds when 37 days old and 100% of birds when 51 days old suggested that most young pigeons probably became infected in the rearing loft. [less ▲]

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See detailObservations on seed protein electrophoretic patterns of some species within the genus Phaseolus.
Baudoin, Jean-Pierre ULg; Schmit, V.; Wathelet, Bernard ULg

in Annual Report of the Bean Improvment Cooperative (1991), 34

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See detailObservations on the establishment of a Devonian and Lower Carboniferous high resolution miospore biostratigraphy
Streel, Maurice ULg; Loboziak, S

in Review of Palaeobotany and Palynology (1994), 83

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See detailObservations on the Helminths of Harbour Porpoises (Phocoena Phocoena) and Common Guillemots (Uria Aalge) from the Belgian and German Coasts
Brosens, L.; Jauniaux, Thierry ULg; Siebert, U. et al

in Veterinary Record : Journal of the British Veterinary Association (1996), 139(11), 254-7

Between February 1990 and July 1991, 18 harbour porpoises (Phocoena phocoena) and 248 common guillemots (Uria aalge), found dead along the Belgian and German coasts, were examined for their burden of ... [more ▼]

Between February 1990 and July 1991, 18 harbour porpoises (Phocoena phocoena) and 248 common guillemots (Uria aalge), found dead along the Belgian and German coasts, were examined for their burden of helminths. A total of three species were found in the guillemots (one cestode, one nematode and one pentastomid), and six species in the porpoises (one trematode, one cestode and four nematodes). Among the guillemots the burden of helminths was not statistically different between juvenile and adult birds. The deaths of the birds were apparently not related to the parasite infections. In contrast, the adult porpoises were more heavily parasitised than the juveniles, except for one young porpoise stranded on the Belgian coast. In the porpoises, four species of parasites had a pathological effect and Torynurus convolutus was responsible for the death of one animal from the Belgian coast and three from the German coast. [less ▲]

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See detailObservations on the mites (Acarai) associated with Carabidae (Coleoptera) in Belgium.
Fain, A.; Noti, J.; Dufrêne, Marc ULg

in International Journal of Acarology (1995), 21

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See detailObservations on the Relative Intactness of the Mesolithic Strata at l'Abri du Pape
Miller, Rebecca ULg; Straus, Lawrence G.

in Otte, Marcel; Léotard, Jean-Marc; Straus, Lawrence G. (Eds.) L'Abri du Pape : Bivouacs, enterrements et cachettes sur la Haute Meuse belge : du Mésolithique au Bas Empire Roman (1999)

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See detailObservations palynologiques dans le Couvinien (Emsien terminal et Eifélien) du bord oriental du Synclinorium de Dinant, Belgique.
Lessuise, A; Streel, Maurice ULg; Vanguestaine, M

in Annales de la Société Géologique de Belgique (1979), 102

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See detailObservations photographiques de la comète Kohoutek (1973 f) au grand télescope de Schmidt franco-liégeois
Dossin, P.; Heck, A.; Klutz, M. et al

in Ciel et Terre (1974), 90

Not Available

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See detailObservations photographiques de la comète P/d'Arrest effectuées en 1976 à l'équatorial GPO de 40 cm de l'Observatoire Austral Européen (ESO) à La Silla (Chili).
Debehogne, H.; Surdej, Jean ULg; Surdej, Anna ULg

in Bulletin de l'Observatoire Royal Astronomique de Belgique (1978), 9

Not Available

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See detailObservations récentes du spectre de HD 108 (Of)
Andrillat, Y.; Fehrenbach, Charles; Swings, Polydore ULg et al

in Astronomy and Astrophysics (1973), 29

Spectrograms of HD 108 covering a wide spectral range (3200 Å-8000 Å) have been obtained in 1971 and 1972 at the Haute Provence Observatory. They are described in detail in the present paper and they are ... [more ▼]

Spectrograms of HD 108 covering a wide spectral range (3200 Å-8000 Å) have been obtained in 1971 and 1972 at the Haute Provence Observatory. They are described in detail in the present paper and they are compared to previously published observations. New emission lines have been detected (3806 Å, 4415 Å, 4417 Å, 6340 Å) as well as new rapid intensity variations (He I: 4026.2 Å, 4387.9 Å; N III: 3s4P0-3p4D and 42F0-52G; Si IV: 4s2S-4p2P0). The measured radial velocities are compatible with an expanding atmosphere which exhibit a marked acceleration toward the outer layers. [less ▲]

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See detailObservations relatives aux pigments bleus chez Henri Bles
Allart, Dominique ULg; Oger, Cécile; Denoël, Sophie

in A joint meeting of ICOM-CC Working Groups Paintings 1&2 and The Paintings Section, UKIC, London, British Museum, 10-11 September 2001. Extended Abstracts of presentations (2001)

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See detailObservations sous Anvers, 12 septembre 2002
Boularbah, Hakim ULg; Marquette, V.

in Revue de Droit Commercial Belge [= RDC] = Tijdschrift voor Belgisch Handelsrecht [=TBH] (2003)

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See detailObservations sous C.A., 19 avril 2006
Georges, Frédéric ULg

in Journal des Tribunaux (2006), (54/2006), 701-703

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See detailObservations sous Cass. (1re ch.), 16 déc. 2005
Georges, Frédéric ULg

in Journal des Tribunaux (2006)

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See detailObservations sous Cass., 11 février 2000
Boularbah, Hakim ULg

in Revue de Droit Judiciaire et de la Preuve = Tijdschrift voor Procesrecht en Bewijsrecht (2000)

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See detailObservations sous J.P. Tournai I 6 octobre 2004
Salvé, Arianne ULg

in Journal des Juges de Paix = Tijdschrift van de Vrederecters (2008), (1), 90

servitudes légales - enclave - destination nouvelle (garage) - tolérance - enclave volontaire - indemnité

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See detailObservations sous Mons, 25 mars 2002
Leleu, Yves-Henri ULg

in Revue de Jurisprudence de Liège, Mons et Bruxelles (2003)

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See detailObservations sous Prés. Com. Bruxelles, 27 avril 1999
Boularbah, Hakim ULg

in Revue de Droit Commercial Belge [= RDC] = Tijdschrift voor Belgisch Handelsrecht [=TBH] (1999)

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