381 research outputs found
The Great Famine - an Irish tragedy and its impact on the English town of Huddersfield from 1845-1861
No full textRecent Decisions
No full textComments on recent decisions by Louis Albert Hafner, Patrick F. Coughlin, George J. Murphy, Benedict R. Danko, John E. Lindberg, William J. O\u27Connor, Mark Harry Berens, Joseph M. Gaydos, William G. Greif, Lawrence S. May, Jr., Charles James Perrin, Arthur L. Beaudette, F. Richard Kramer, Kenneth N. Obrecht, William T. Huston, and Maurice J. Moriarty
Recent Decisions
No full textComments on recent decisions by Louis Albert Hafner, Patrick F. Coughlin, George J. Murphy, Benedict R. Danko, John E. Lindberg, William J. O\u27Connor, Mark Harry Berens, Joseph M. Gaydos, William G. Greif, Lawrence S. May, Jr., Charles James Perrin, Arthur L. Beaudette, F. Richard Kramer, Kenneth N. Obrecht, William T. Huston, and Maurice J. Moriarty
Recent Decisions
No full textComments on recent decisions by Louis Albert Hafner, Patrick F. Coughlin, George J. Murphy, Benedict R. Danko, John E. Lindberg, William J. O\u27Connor, Mark Harry Berens, Joseph M. Gaydos, William G. Greif, Lawrence S. May, Jr., Charles James Perrin, Arthur L. Beaudette, F. Richard Kramer, Kenneth N. Obrecht, William T. Huston, and Maurice J. Moriarty
Search for very high energy Gamma radiation from the Starburst Galaxy IC 342
No full textThis thesis describes a search for very high energy (VHE) gamma-ray emission\ud
from the starburst galaxy IC 342. The analysis was based on data from the\ud
2003 — 2004 observing season recorded using the Whipple 10-metre imaging\ud
atmospheric Cherenkov telescope located on Mount Hopkins in southern Arizona.\ud
IC 342 may be classed as a non-blazar type galaxy and to date only a few\ud
such galaxies (M 87, Cen A, M 82 and NGC 253) have been detected as VHE\ud
gamma-ray sources. Analysis of approximately 24 hours of good quality IC\ud
342 data, consisting entirely of ON/OFF observations, was carried out using a\ud
number of methods (standard Supercuts, optimised Supercuts, scaled optimised\ud
Supercuts and the multivariate kernel analysis technique). No evidence for TeV\ud
gamma-ray emission from IC 342 was found. The significance was 0.6 a with\ud
a nominal rate of 0.04 ± 0.06 gamma rays per minute. The flux upper limit\ud
above 600 GeV (at 99.9 % confidence) was determined to be 5.5 x 10-8 m-2\ud
s-1, corresponding to 8 % of the Crab Nebula flux in the same energy range
Search for very high energy Gamma radiation from the Starburst Galaxy IC 342
No full textThis thesis describes a search for very high energy (VHE) gamma-ray emission
from the starburst galaxy IC 342. The analysis was based on data from the
2003 — 2004 observing season recorded using the Whipple 10-metre imaging
atmospheric Cherenkov telescope located on Mount Hopkins in southern Arizona.
IC 342 may be classed as a non-blazar type galaxy and to date only a few
such galaxies (M 87, Cen A, M 82 and NGC 253) have been detected as VHE
gamma-ray sources. Analysis of approximately 24 hours of good quality IC
342 data, consisting entirely of ON/OFF observations, was carried out using a
number of methods (standard Supercuts, optimised Supercuts, scaled optimised
Supercuts and the multivariate kernel analysis technique). No evidence for TeV
gamma-ray emission from IC 342 was found. The significance was 0.6 a with
a nominal rate of 0.04 ± 0.06 gamma rays per minute. The flux upper limit
above 600 GeV (at 99.9 % confidence) was determined to be 5.5 x 10-8 m-2
s-1, corresponding to 8 % of the Crab Nebula flux in the same energy range
Identifying The Flap Side-Edge Noise Contribution Of A Wind Turbine Blade Section With An Adaptive Trailing-Edge
No full textActive trailing-edge technology is a promising application for localized load alleviation of large-diameter wind turbine rotors, accomplished using one or more control surfaces in the rotor blade's outer region. This work focuses on identifying noise contributions from the flap side-edge and the trailing edge in a laboratory condition. Measurements were conducted in the Acoustic Wind Tunnel Braunschweig (AWB) at the German Aerospace Center's (DLR) Braunschweig site. The small-scale model has a span of 1200 mm and a chord length of 300 mm. The control surface, a plain flap, has a span of 400 mm and a chord length of 90 mm. Far-field noise was measured using a phased-microphone array for various flow speeds, angles of attack and flap deflection angles. Due to the size of the model and assumed closeness of the sound sources, two noise reduction addons were installed interchangeably: trailing-edge brush and flap side-edge porous foam for sound source identification. Analysis of the far-field noise reveals that, while changes to the flap deflection angle alter the far-field noise spectra, the trailing-edge noise remains the predominant noise source at deflection angles -5° and 5°. No additional noise level was observed from the flap side-edge within the measurable frequency range at these angles. The flap side-edge noise has an increased role for frequency larger than 2 kHz for the larger flap deflection angles of -10° and 10°
Recent Decisions
No full textComments on recent decisions by Sidney Baker, Arthur L. Beaudette, Mark Harry Berens, Francis W. Collopy, Patrick F. Coughlin, Benedict R. Danko, Joseph M. Gaydos, William T. Huston, Francis J. Keating, John E. Lindberg, James D. Matthews, Lawrence S. May, Jr., Maurice J. Moriarty, George J. Murphy, Jr., William J. O\u27Connor, Charles James Perrin, Albert R. Ritcher, Henry Martin Shine, Jr., Cyril C. Vidra, and Dale A. Winnie
Papers Presented to the 7th Session of the EIFAC Working Party on Eel
No full textThe Seventh Session of the Working Party on Eel of the European Inland Fisheries Advisory Commission was held in the Royal Hospital, Killmainham, Dublin. A list of the peer-reviewed papers and abstracts of other presentations to the session are given below. -- I M Domingos: Fluctuation of glass eel migration in the Mondego estuary (Portugal) in 1988 and 1989. -- Daniel Guerault, Raymonde Lecomte-Finiger, Yves Desaunay, Sylvie Biagianti-Risbourg, Pierre Beillois and Patrick Grellier: Glass eel arrivals in the Vilaine estuary (Northern Bay of Biscay) in 1990: Demographic features and early life history. -- Jan G P Klein Breteler: Effect of provenance and density on growth and survival of glass eels Anguilla anguilla (L.) in mesocosm experiments. -- R. Lecomte-Finiger, S. Biagianti-Risbourg, Y. Desaunay, D. Guerault, B. Fourcault, S. Planes and A. Yahyaoui: Age at recruitment of A. anguilla glass-eels on the eastern Atlantic coast as inferred from otolith growth increments. -- P McGovern and T K McCarthy: Elver migration in the River Corrib system, western Ireland. -- Christopher Moriarty: Catches of Anguilla anguilla (L.) elver on the Atlantic coast of Europe 1989-1990. -- Maria Assuncao Santos and Michael Weber: Growth studies on monthly captured glass eels from the Rio Minho in two recirculation systems. -- Raymonde Lecomte-Finiger: Age and birth date of elvers collected in Moorea (French Polynesia) (poster). -- Lotti Ben Abdallah: Influence of some abiotic factors on the abundances of glass eel Anguilla anguilla (L.) in the estuary of the River Loire, France (abstract). -- C. Belpaire, H Van Driessche, F Y Gao and F Ollevier: Food and feeding activity of glass eel Anguilla anguilla (L.) stocked in earthen ponds. -- Maria Bninska and Marian Leopold: The effect of eel on fish stock composition in lakes- preliminary results. -- Rose M Callaghan and T Kieran McCarthy: Variations in population structure and growth rate of eels in the Dunkellin river system, western Ireland. -- J L Costa, P R Almeida, C Assis, F Moreira and M J Costa: A study of methods of estimating the size of eel populations in small streams. -- Christopher Moriarty: Management of the Corrib eel fishery, Ireland. -- I A Naismith and B Kights: The distribution, density and growth of the European eel Anguilla anguilla (L.) in the River Thames catchment. -- W Russell Poole, Julian D Reynolds and Christopher Moriarty: Age and growth of eel Anguilla anguilla (L.) in oligotrophic streams. -- R H Hadderingh, J W van der Stoep and J M P M Habraken: Deflecting eels from water inlets of power stations with light. -- K Holmgren, H Wickstrom and K Fredga: Growth of eel in a meoscale experiment. -- Aline Caillou, Christian Francisco, Raymonde Lecomte-Finiger and Jean-Marie Salmon: Lipofuscin used as an age indicator in the European eel Anguilla anguilla (L.). Comparison between lipopigment, fluorimetric measurements and otolithometric data (poster). -- Peer Doering, Jiirgen Ludwig and Gerhard Gmel: Prelimary results of otolith amalysis with eels of known age (abstract). -- Antoine Legault: A study of some selectivity factors in eel ladders (abstract). -- F - W Tesch: Insignificance of tidal currents for silver eel migration as studied by eel trac.kings and current measurements. -- F - W Tesch and U Niermann: Stock density of eel larvae Anguilla anguilla (L.) on the European continental slope, based on collections made between 1985 and 1989. -- Takakazu Ozawa, Futoshi Kakizoe, Osame Tabeta, Takashi Maeda and Yasutaka Yuwaki: Larval growth and drift of the Japanese eel Anguilla japonica estimated from leptocephali collections (abstract). -- W-N Tzeng and Y-C Tsai: Otolith microstructural growth patterns and daily age of the eel Anguilla japonica elvers from the estuaries of Taiwan (abstract). -- S Appelbaum and V Birkan: The effect of grading on the growth and distribution pattern in young eels Anguilla anguilla (L.) reared in recirculating systems. -- Inge Boiitius, Karl Otto Wahlstrom and Curt Gelin: Experimentally induced sexual maturity in farmed European eel Anguilla anguilla (L.). -- G. Golombo and G. Grandi: Further experiments in the effects of sex steroids on the gonad sex differentiation of European eel. -- Soeren Hendriksen: Production of eel in recirculation systems in Denmark 1985-1991. -- M Saroglia, C lando Ii, lingle and G Angle: Recent developments in eel farming in Italy. -- Reiner Knosche: An effective biofilter system for eel culture in closed recirculating systems. -- Hao-Ren Lin, Mei-Li Zhang, Lianxi Chen, Glen Van Der Kraak and R E Peter: Effects of sex steroids on gonadotropin synthesis and secretion as well as ovarian development in female Japanese silver eel Anguilla japonica (abstract). -- J Hoglund, J Andersson, H. Wickstrom and M Reizenstein: The distribution of Anguillicola in Sweden and its association with thermal discharge areas. -- J Bosnakovski, K Necev, K Apostolski and M Hristovski: Appearance of eel diseases in Ohrid Lake. Inge Boetius: Development of Anguillicola infestations in some Danish lakes and inlets (abstract)
Extreme galaxies: TeV gamma-ray emission from the Blazar 1ES 2344+514
No full textThis thesis describes an investigation of Very High Energy (VHE) gamma-ray emission from the blazar galaxy 1ES 2344+514, based on data from five observational seasons (1999-2004) using the Whipple 10-metre telescope in southern Arizona. The 65 hours of data consists mostly of tracking observations without
contiguous OFF-source control data. A matching procedure was used to select a surrogate OFF-run compatible with each ON-source observation, to allow for
determination of the background signal. Analyses of the data was carried out using both the standard Supercuts criteria and the multivariate kernel method.
The TeV flux of 1ES 2344+514, above 400 GeV, was determined to be (0.29 ± 0.14)xlO-7 m- 2s-1. To allow a comparison with the flux as determined by HEGRA from 1997 to 2002, the flux above 800 GeV was calculated to be (0.07 ± 0.04)xl0_7m_2s“1. This compares very well with the HEGRA value, althoughit is noted that the uncertainties are a factor of two larger. An estimate of
the spectral index of 1ES 2344 is derived from the quiescent flux values, although the uncertainty on the value is extremely large due to the limited statistics
- …
