Search Results - "Knudsen, D J"

Thermal ion imagers and Langmuir probes in the Swarm electric field instruments by Knudsen, D. J., Burchill, J. K., Buchert, S. C., Eriksson, A. I., Gill, R., Wahlund, J.‐E., Åhlen, L., Smith, M., Moffat, B.

“…The European Space Agency's three Swarm satellites were launched on 22 November 2013 into nearly polar, circular orbits, eventually reaching altitudes of…”
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Northern preference for terrestrial electromagnetic energy input from space weather by Pakhotin, I. P., Mann, I. R., Xie, K., Burchill, J. K., Knudsen, D. J.

“…Terrestrial space weather involves the transfer of energy and momentum from the solar wind into geospace. Despite recently discovered seasonal asymmetries…”
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Magnetospheric Signatures of STEVE: Implications for the Magnetospheric Energy Source and Interhemispheric Conjugacy by Nishimura, Y., Gallardo‐Lacourt, B., Zou, Y., Mishin, E., Knudsen, D. J., Donovan, E. F., Angelopoulos, V., Raybell, R.

“…We present three STEVE (strong thermal emission velocity enhancement) events in conjunction with Time History of Events and Macroscale Interactions (THEMIS) in…”
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Update from a 12-Year Nationwide Fungemia Surveillance: Increasing Intrinsic and Acquired Resistance Causes Concern by Astvad, K M T, Johansen, H K, Røder, B L, Rosenvinge, F S, Knudsen, J D, Lemming, L, Schønheyder, H C, Hare, R K, Kristensen, L, Nielsen, L, Gertsen, J B, Dzajic, E, Pedersen, M, Østergård, C, Olesen, B, Søndergaard, T S, Arendrup, M C

“…New data from the years 2012 to 2015 from the Danish National Fungemia Surveillance are reported, and epidemiological trends are investigated in a 12-year…”
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Multi‐Scale Ionospheric Poynting Fluxes Using Ground and Space‐Based Observations by Billett, D. D., McWilliams, K. A., Ponomarenko, P. V., Martin, C. J., Knudsen, D. J., Vines, S. K.

“…Three events are presented where high‐resolution measurements from the Swarm satellites coincided with excellent F‐region ionospheric coverage from The Super…”
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Unexpected STEVE Observations at High Latitude During Quiet Geomagnetic Conditions by Gallardo‐Lacourt, B., Nishimura, Y., Kepko, L., Spanswick, E. L., Gillies, D. M., Knudsen, D. J., Burchill, J. K., Skone, S. H., Pinto, V. A., Chaddock, D., Kuzub, J., Donovan, E. F.

“…Strong Thermal Emission Velocity Enhancement (STEVE), is a captivating optical phenomenon typically observed in the mid‐latitude ionosphere. This paper…”
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Diagnosing the Role of Alfvén Waves in Magnetosphere‐Ionosphere Coupling: Swarm Observations of Large Amplitude Nonstationary Magnetic Perturbations During an Interval of Northward IMF by Pakhotin, I. P., Mann, I. R., Lysak, R. L., Knudsen, D. J., Gjerloev, J. W., Rae, I. J., Forsyth, C., Murphy, K. R., Miles, D. M., Ozeke, L. G., Balasis, G.

“…High‐resolution multispacecraft Swarm data are used to examine magnetosphere‐ionosphere coupling during a period of northward interplanetary magnetic field…”
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Topside equatorial spread F-related field-aligned Poynting flux: observations and simulations by Rodríguez-Zuluaga, J., Stolle, C., Hysell, D., Knudsen, D. J.

“…Electric and magnetic field data from the Swarm constellation mission are used to report on the Poynting flux associated with postsunset topside equatorial…”
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Alfvénic Dynamics and Fine Structuring of Discrete Auroral Arcs: Swarm and e‐POP Observations by Miles, D. M., Mann, I. R., Pakhotin, I. P., Burchill, J. K., Howarth, A. D., Knudsen, D. J., Lysak, R. L., Wallis, D. D., Cogger, L. L., Yau, A. W.

“…The electrodynamics associated with dual discrete arc aurora with antiparallel flow along the arcs were observed nearly simultaneously by the enhanced Polar…”
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Amphotericin B and Caspofungin Resistance in Candida glabrata Isolates Recovered from a Critically Ill Patient by Krogh-Madsen, Mikkel, Arendrup, Maiken Cavling, Heslet, Lars, Knudsen, Jenny Dahl

“…Background Consecutive Candida glabrata isolates recovered from a patient in an intensive care unit were resistant to amphotericin B (minimum inhibitory…”
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Swarm in situ observations of F region polar cap patches created by cusp precipitation by Goodwin, L. V., Iserhienrhien, B., Miles, D. M., Patra, S., van der Meeren, C., Buchert, S. C., Burchill, J. K., Clausen, L. B. N., Knudsen, D. J., McWilliams, K. A., Moen, J.

“…High‐resolution in situ measurements from the three Swarm spacecraft, in a string‐of‐pearls configuration, provide new insights about the combined role of flow…”
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Observation of polar cap patches and calculation of gradient drift instability growth times: A Swarm case study by Spicher, A., Cameron, T., Grono, E. M., Yakymenko, K. N., Buchert, S. C., Clausen, L. B. N., Knudsen, D. J., McWilliams, K. A., Moen, J. I.

“…The Swarm mission represents a strong new tool to survey polar cap patches and plasma structuring inside the polar cap. In the early commissioning phase, the…”
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A prospective survey of Aspergillus spp. in respiratory tract samples: prevalence, clinical impact and antifungal susceptibility by Mortensen, K. L., Johansen, H. K., Fuursted, K., Knudsen, J. D., Gahrn-Hansen, B., Jensen, R. H., Howard, S. J., Arendrup, M. C.

“…A three-month laboratory-based prospective survey was conducted at four major university hospitals covering one-third of the Danish population in order to…”
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Estimation of Ion Temperature in the Upper Ionosphere Along the Swarm Satellite Orbits by Lomidze, L., Burchill, J. K., Knudsen, D. J., Huba, J. D.

“…Ion temperature is one of the key parameters that provides insight into the thermal balance of the coupled ionosphere‐thermosphere system. Together with the…”
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Clinical consequences of using PNA-FISH in Staphylococcal bacteraemia by Laub, R. R., Knudsen, J. D.

“…To optimize patient treatment and rational use of antimicrobials, it is important to provide fast information on findings in blood-cultures (BCs). The purpose…”
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A single-source nosocomial outbreak of Aspergillus flavus uncovered by genotyping by Gewecke, A, Hare, R Krøger, Salgård, C, Kyndi, L, Høg, M, Petersen, G, Nahimana, D, Abou-Chakra, N, Knudsen, J D, Rosendahl, S, Vissing, N H, Arendrup, M C

“…During construction work (2017-2019), an increase in infections was noted among pediatric patients, the majority of whom were receiving amphotericin B…”
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A survey of quiet auroral arc orientation and the effects of the interplanetary magnetic field by Gillies, D. M., Knudsen, D. J., Donovan, E. F., Spanswick, E. L., Hansen, C., Keating, D., Erion, S.

“…Using data from the THEMIS All‐Sky Imager array, we have carried out an extensive study of the orientation of quiet auroral arcs relative to the magnetic…”
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The CASSIOPE/e-POP Suprathermal Electron Imager (SEI) by Knudsen, D. J., Burchill, J. K., Cameron, T. G., Enno, G. A., Howarth, A., Yau, A. W.

“…The Suprathermal Electron Imager (SEI) on the Enhanced Polar Outflow Probe (e-POP) experiment uses a microchannel-plate-intensified charge-coupled device (CCD)…”
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Semi-national surveillance of fungaemia in Denmark 2004–2006: increasing incidence of fungaemia and numbers of isolates with reduced azole susceptibility by Arendrup, M.C., Fuursted, K., Gahrn-Hansen, B., Schønheyder, H.C., Knudsen, J.D., Jensen, I.M., Bruun, B., Christensen, J.J., Johansen, H.K.

“…A semi-national laboratory-based surveillance programme for fungaemia was initiated in 2003 that now covers c. 3.5 million inhabitants (64%) of the Danish…”
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Rocket‐based measurements of ion velocity, neutral wind, and electric field in the collisional transition region of the auroral ionosphere by Sangalli, L., Knudsen, D. J., Larsen, M. F., Zhan, T., Pfaff, R. F., Rowland, D.

“…The JOULE‐II sounding rocket salvo was launched from Poker Flat Rocket Range into weak pulsating aurora following a moderate substorm at 0345 LT on 19 January…”
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