Search

Your search keyword '"Bedford C"' showing total 248 results
Start Over Author "Bedford C" Language english
248 results on '"Bedford C"'

1. Intense alteration on early Mars revealed by high-aluminum rocks at Jezero crater

Author

Royer, C., Bedford, C. C., Johnson, J. R., Horgan, B. H. N., Broz, A., Forni, O., Connell, S., Wiens, R. C., Mandon, L., Kathir, B. S., Hausrath, E. M., Udry, A., Madariaga, J. M., Dehouck, E., Anderson, R. B., Beck, P., Beyssac, O., Clavé, É., Clegg, S. M., Cloutis, E., Fouchet, T., Gabriel, T. S. J., Garczynski, B. J., Klidaras, A., Manelski, H. T., Mayhew, L., Núñez, J., Ollila, A. M., Schröder, S., Simon, J. I., Wolf, U., Stack, K. M., Cousin, A., and Maurice, S.

Published
2024
Full Text
View/download PDF

2. Soil diversity at Jezero crater and Comparison to Gale crater, Mars

Author

Cousin, A., Meslin, P.-Y., Forni, O., Beyssac, O., Clavé, E., Hausrath, E., Beck, P., Dehouck, E., Schröder, S., Fouchet, T., Bedford, C., Johnson, J., Pilleri, P., Lasue, J., Gasnault, O., Martin, N., Chide, B., Udry, A., Sullivan, R., Vaughan, A., Poblacion, I., Arana, G., Madariaga, J.M., Clegg, S., Maurice, S., and Wiens, R.C.

Published
2025
Full Text
View/download PDF

5. Synchrotron x‐ray diffraction for sealed Mars Sample Return sample tubes.

Author

Adam, L. F., Bridges, J. C., Bedford, C. C., Holt, J. M. C., Rampe, E., Thorpe, M., Mason, K., and Ewing, R. C.

Subjects
X-ray diffraction, SYNCHROTRONS, X-ray powder diffraction, TUBES, MARS (Planet), TITANIUM alloys
Abstract

The joint NASA‐ESA Mars sample return campaign aims to return up to 31 sample tubes containing drilled sedimentary and igneous cores and regolith. The titanium alloy tubes will initially still be sealed when they are retrieved. Several types of measurement will be carried out on sealed samples in the pre‐basic characterization phase of scientific investigation. We show that powder x‐ray diffraction (XRD) analysis can be successfully carried out on sealed samples using an x‐ray source at the I12 beamline of Diamond Light Source synchrotron. Our experiment used an analog sample tube and a Martian regolith analog (Icelandic basaltic sand). The titanium walls of the tube analog give strong but few diffraction peaks, making identification of the major constituent mineral phases feasible. A more significant constraint on quantification of mineral phase abundances by this XRD technique is likely to be the grain size of the sample. This technique opens up the possibility of initial mineralogical analysis of samples returned from Jezero crater without opening the sample tubes and the potential changes to the sample that entails. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

6. Dust from Mars-Analog Plains (Iceland): Physico-Compositional Properties as a Function of Grain-Size Fraction

Author

Nachon, Marion, Ewing, R. C, Marcantonio, F, Romero, L, Schimmenti, D, Tice, M, Rampe, E. B, Horgan, B, Lapotre, M, Thorpe, M. T, Bedford, C, Mason, K, Sinha, P, Champion, E, and Harrington, A. D

Subjects
Space Sciences (General)
Abstract

Dust is a key component of the geological and climatic systems of Earth and Mars. On Mars, dust is ubiquitous. It coats rocks and soils, and, in the atmosphere, it interacts strongly with solar and thermal radiation. Yet, key questions remain about the genesis and fate of martian dust, as well as its sources, composition, and properties. We collected wind-blown dust from basaltic plains in SW Iceland at Skjaldbreiðauhraun that represent a geologic Mars-analog environment. Icelandic dust differs from the typical continental sources (e.g. Sahara, Asia) because of its basaltic volcanogenic origin, which is similar to Mars. Dust collection took place in July of 2019 as a complementary project to the SAND-E: Semi-Autonomous Navigation for Detrital Environments project. Here we report preliminary analyses of this Mars-analog dust material, with the goal of understanding the processes that control the physico-chemical proper-ties of the different grain-size fractions.

Published
2020

7. Sediment Sorting and Rounding in a Basaltic Glacio-Fluvio-Aeolian Environment: Ϸhórisjökull Glacier, Iceland

Author

Mason, K. G, Ewing, R. C, Nachon, M, Rampe, E. B, Horgan, B, Lapotre, M. G. A, Thorpe, M. T, Bedford, C. C, Sinha, P, and Champion, E

Subjects
Geophysics
Abstract

Sediments and sedimentary rocks preserve a rich history of environment and climate. Identifying these signals requires an understanding of the physical and chemical processes that have affected sedimentary deposits [1]. Such processes include sorting and rounding during transport and chemical alteration through weathering and diagenesis. Although these processes have long been studied in quartz-dominated sedimentary systems [2], a lack of studies of basaltic sedimentary systems limits our interpretations of the environment and climate where mafic source rocks dominate, such as on Mars [3,4]. As part of the SAND-E: Semi-Autonomous Navigation for Detrital Environments project [5], which uses robotic operations to examine physical and chemical changes to sediments in basaltic glacio-fluvialaeolian environments, this research studies changes in sorting and rounding of fluvial-aeolian sediments along a glacier-proximal-to-glacier-distal transect in the outwash-plain of the Ϸόrisjökull glacier in SW Iceland (Fig. 1)

Published
2020

8. Characterisation of Float Rocks at Ireson Hill, Gale Crater

Author

Bowden, D. L, Bridges, J. C, Schwenzer, S. P, Wiens, R. C, Gasnault, O, Thompson, L, Gasda, P, and Bedford, C

Subjects
Space Sciences (General)
Abstract

Float rocks discovered by surface missions on Mars have given unique insights into the sedimentary, diagenetic and igneous processes that have operated throughout the planet’s history. In addition, Gale sedimentary rocks, both float and in situ, record a combination of source compositions and diagenetic overprints. We examine a group of float rocks that were identified by the Mars Science Laboratory mission’s Curiosity rover at the Ireson Hill site, circa. sol 1600 using ChemCam LIBS, APXS and images from the MastCam, Mars Hand Lens Imager (MAHLI) and ChemCam Remote Micro-Imager (RMI) cameras. Geochemical data provided by the APXS and ChemCam instruments allow us to compare the compositions of these rocks to known rock types from Gale crater, as well as elsewhere on Mars. Ireson Hill is a 15 m long butte in the Murray formation with a dark cap-ping unit with chemical and stratigraphic consistency with the Stimson formation. A total of 6 float rocks have been studied on the butte.

Published
2020

9. Enhanced Groundwater Flow on and Below Vera Rubin Ridge, the Murray Formation, Gale Crater: Evidence from Thermochemical Modeling.

Author

Turner, S. M. R, Schwenzer, S. P, Bridges, J. C, Rampe, E. B, Bedford, C. C, Achilles, C. N, McAdam, A, Mangold, N, Hicks, L. J, Parnell, J, Kirnbauer, T, Fraeman, A. A, and Reed, M. H

Subjects
Space Sciences (General)
Abstract

NASA’s Mars Science Laboratory Curiosity rover has been exploring Vera Rubin ridge (VRR), part of the Murray formation in Gale crater, Mars, between sol 1809 and 2302. Evidence for Fe-oxides and phyllosilicates in mineralogical and geochemical data for this region was returned by Curiosity [1-5]. We applied thermochemical modeling to con-strain the formation conditions of the phyllosilicate-hematite assemblage identified on and below VRR. Average alteration compositions for the Murray formation on and below VRR were derived using CheMin and APXS data. These compositions were reacted with Gale Portage Water (GPW) between 25–100 °C and for 10% and 50% Fe3+/Fetot of the host rock [6]. Here we summarize models run at 50 °C and 10% Fe3+/Fetot for alteration compositions derived from Murray host rock compositions.

Published
2020

10. Decorrelation Stretches (DCS) of Visible Images as a Tool for Sedimentary Provenance Investigations on Earth and Mars

Author

Sinha, P, Horgan, B, Ewing, R, Rampe, E, Lapotre, M, Nachon, M, Thorpe, M, Rudolph, A, Bedford, C, Mason, K, Champion, E, Gray, P, Reid, E, and Faragalli, M

Subjects
Space Sciences (General)
Abstract

The surface of Mars exhibits vast expanses of mafic sediments and ancient sedimentary rocks that record signals of climate and environment. To decipher the paleoenvironments, the sediment sources and transport histories must be con-strained, but it is not well known how physical fractionation and aqueous alteration affect mafic sediments during glacial, eolian, and fluvial processes. Semi-Autonomous Navigation for Detrital Environments (SAND-E), a NASA Planetary Science and Technology through Analog Research (PSTAR) project, bridges this gap through studies of sediment-grain properties and mineralogy in the glacio-XRD)-derived mineralogies.

Published
2020

11. Using XRD to Characterize Sediment Sorting in a Mars Analog Glacio-Fluvio-Eolian Basaltic Sedimentary System in Iceland

Author

Rampe, E. B, Ewing, R. C, Thorpe, M. T, Bedford, C. C, Horgan, B, Lapotre, M. G. A, Sinha, P, Nachon, M, Mason, K, Champion, E, Gray, P, Soto, A, and Reid, E

Subjects
Lunar And Planetary Science And Exploration
Abstract

The martian surface has a primarily basaltic composition and is dominated by sedimentary deposits. Ancient layered sedimentary rocks have been identified across the planet from orbit, have been studied in situ by the Mars Exploration Rovers and the Mars Science Laboratory rover, and will be studied by the Mars 2020 rover. These ancient sedimentary rocks were deposited in fluvial, lacustrine, and eolian environments during a warmer and wetter era on Mars. It is important to study the composition of sediments in Mars analog environments to characterize how minerals in basaltic sedimentary systems are sorted and/or aqueously altered. This information can help us better interpret sedimentary processes from similar deposits on Mars and derive information about the igneous source rocks. Sediment sorting has been studied extensively on Earth, but not typically in basaltic environments. Previous work has addressed sorting of basaltic sediments through experimental techniques and in modern eolian basaltic systems and aqueous alteration in subglacial and proglacial environments. We add to this body of research by studying sediment sorting and aqueous alteration in a glacio-fluvio-eolian basaltic system in southwest Iceland.

Published
2020

12. The Role of Diagenesis at Vera Rubin Ridge in Gale Crater, Mars, and the Chemostratigraphy of the Murray Formation as Observed by the Chemcam Instrument

Author

Frydenvang, J, Mangold, N, Wiens, R. C, Fraeman, A. A, Edgar, L. A, Fedo, C, L’Haridon, J, Bedford, C. C, Gupta, S, Grotzinger, J. P, Bridges, J. C, Clark, B. C, Rampe, E. B, Gasnault, O, Maurice, S, Gasda, P. J, Lanza, N. L, Olilla, A. M, Meslin, P.-Y, Payr, V, Calef, F, Salvatore, M, House, C. H, and Gabriel, T. S. J

Subjects
Space Sciences (General)
Abstract

The Mars Science Laboratory (MSL) Curiosity rover explored Vera Rubin ridge (VRR) in Gale crater, Mars, for almost 500 sols (Mars days) between arriving at the ridge on sol 1809 of the mission in September 2017 and leaving it on sol 2302 upon entering the Glen Torridon area south of the ridge. VRR is a topographic ridge on the central mound, Aeolis Mons (Mt. Sharp), in Gale crater that displays a strong hematite spectral signature from orbit. In-situ observations on the ridge led to the recognition that the ridge-forming rocks belong to the Murray formation, the lowermost exposed stratigraphic unit of the Mt. Sharp group, that was first encountered at the Pahrump Hills location. Including VRR rocks, the Murray formation, interpreted to be primarily deposited in an ancient lacustrine environment in Gale crater, is more than 300 m thick. VRR itself is composed of two stratigraphic members within the Murray formation, the Pettegrove Point member overlain by the Jura member. The Pettegrove Point member overlies the Blunts Point member of the Murray formation. Areas of gray coloration are observed in the Jura member predominantly, but also in the Pettegrove Point member. Generally, gray areas are found in local topographic depressions, but contacts between red and gray rocks crosscut stratigraphy. Additionally, cm-scale dark concretions with very high iron-content are commonly observed in gray rocks, typically surrounded by a lighttoned zone that is conversely depleted in iron. A key goal for the VRR campaign was to characterize geochemical variations in the ridge-forming rocks to investigate the role of primary and diagenetic controls on the geochemistry and morphology of VRR. Here, we present observations by the ChemCam instrument on VRR and compare these to the full Murray formation chemostratigraphy. This work was recently submitted to a special issue of JGRPlanets that detail the full VRR campaign.

Published
2020

13. First Gale Western Butte Capping-Unit Compositions, and Relationships to Earlier Units Along Curiosity's Traverse

Author

Wiens, R. C, Mangold, N, Forni, O, Anderson, R. B, Gasnault, O, Bryk, A, Dietrich, W. E, Johnson, J. R, Dehouck, E, Deit, L. Le, Frydenvang, J, Bedford, C, and Maurice, S

Subjects
Space Sciences (General)
Abstract

The Curiosity rover has been traversing through the clay-bearing unit (Glen Torridon; GT), approaching Greenheugh pediment, a large, fan-shaped surface surrounding the mouth of Gediz Vallis on the lower slope of Mt. Sharp. The pediment unconformably overlies the underlying bedrock, and is hence younger than units of the Mt. Sharp group. Orbital imaging of the pediment has shown it to have a slightly lower albedo and higher thermal inertia than neighboring units, to be relatively retentive of craters (e.g., erosion resistant), and to exhibit curved bedforms suggestive of lithified eolian bedforms. No diagnostic spectral signature has been observed from orbit. Recent rover positions allowed remote imaging of the contact between Greenheugh pediment and the eroded Murray formation strata below it, showing that the pediment capping material is cross-bedded and relatively thin (1-3 m), and suggesting that the pediment may have been much larger at one time. As Curiosity approached the edge of the pediment, the team investigated two buttes named Central and Western. The latter butte contains dark capping material that initially looked similar to the pediment cap, but close inspection revealed important physical differences. Here we report on compositions from ChemCam of two float rocks that appear to have rolled down from the capping unit, and on potential relation-ships to other targets along the traverse of the rover.

Published
2020

14. Investigating Relationships Between Geochemistry and Physical Grain Characteristics Along a Glacio-Fluvial-Aeolian Sediment Transport Pathway Using µXRF

Author

Champion, E, Ewing, R. C, Nachon, M, Rampe, E. B, Horgan, B, Lapotre, M. G. A, Thorpe, M. T, Bedford, C. C, Sinha, P, Mason, K, and Tice, M

Subjects
Space Sciences (General)
Abstract

Iceland’s basaltic volcanic rocks and glacial, fluvial, and aeolian landscapes resemble those studied on Mars, which makes it an ideal location to study the evolution of basaltic landscapes, the weathering and alteration of basaltic sediments in cold and wet environments, and the generation of a basaltic sedimentary record. The SAND-E: Semi-Autonomous Navigation for Detrital Environments project examines physical and chemical changes in sediments transported through basaltic fluvial and aeolian environments, and tests operational scenarios, which include a drone and a robotic rover instrumented with autonomous terrain analysis software. As part of the SAND-E project, we examined a glacial outwash plain at Skjaldbreiðauhraun, in SW Iceland. This study uses micro X-ray fluorescence (μXRF) to examine the chemical and physical properties of unconsolidated sediment-size fractions from 710 μm to < 63 μm along a downstream transect from a glacial sourced watershed. μXRF is ideally suited for this task because it maps elemental distributions at sub-grain scales thereby allowing a direct correlation between grainsize, grain shape, and chemistry. It is also a good analog technique for the Mars 2020 mission equipped with the PIXL (Planetary Instrument for X-ray Lithochemistry) that will be deployed at Jezero Crater, Mars.

Published
2020

15. Overview and Initial Results of SAND-E: Semi-Autonomous Navigation for Detrital Environments

Author

Ewing, R. C, Rampe, E. B, Horgan, B, Lapotre, M. G. A, Nachon, M, Thorpe, M. T, Bedford, C. C, Sinha, P, Mason, K, Champion, E, Gray, P, Soto, A, Faragalli, Michele, and Reid, E

Subjects
Space Sciences (General)
Abstract

Unmanned aerial systems (UAS) and automated terrain analysis for science and navigation are new technologies for planetary exploration. The Mars Helicopter will fly with the Mars2020 rover, the Dragonfly quadcopter will explore Titan, and Soil Properties and Object Classification (SPOC) software will be used for path planning and navigation on the Mars2020 rover. Using an Argo J5 rover instrumented with stereo cameras and Autonomous Soil Assessment System (ASAS) software, and an off the shelf quadcopter, SAND-E tested the use of automated terrain analysis and UAS data for science operations in a Mars-analog environment in Iceland during July of 2019. Scientifically, we sought to determine changes in the physical and chemical properties of sediments along a glacial-fluvial-aeolian transport pathway. Operationally, we tested rover mission-like scenarios that included UAS images and classified terrain images. Here, we present the initial results for both the operations and science elements of the study. Site Selection: A goal of SAND-E is examine sorting and alteration of sediments in fluvial and aeolian environments in both mineral-dominated and glass-dominated basaltic settings. During the first year of the project we focused on a mineral-dominated environment. Selection of the location was based on prior publications that indicated our selected region had a greater abundance of crystalline sediments than other areas fluvial-aeolian settings in Iceland. Other criteria included the presence of both fluvial and aeolian landforms along a transport pathway such that the sediments in transport could be linked to their source rocks. We chose the Skjaldbreidauhraun glacial outwash plain, which sits at the base of Thórisjökull glacier. The site is 30 km north of Thingvellir National Park and ~2 hours from Reykjavik. The outwash plain is fed by two small catchments that drain from the base of the glacier and cut through hyaloclastite and shield volcano bedrock. The drainage progresses from steep alluvial fans near the glacier into a low-sloping fluvial braidplain that becomes confined by the Skjaldbreidur shield volcano and creates a shallow canyon cut into lava bedrock. The fluvial system was a typical braided alluvial environment composed pebble- and cobble-bedded longitudinal bars and sandy channel beds. The river remained active and fluctuated in response to diurnal runoff cycles near the glacier before disappearing into the sandy substrate downstream. The high concentration of suspended sediment in the river was evident by the cloudy water and the silt and clay-sized sediments that draped the channel beds after abandonment and created playas in the lowest sloping areas of the catchment. The entire fluvial system was affected by the winds generated by frontal systems and katabatic flows descending the glacier. This resulted in the formation of aeolian lag deposits and a wind-deflation plain where the fluvial system was not active. Wind ripples and drifts formed in abandoned fluvial channels from aeolian reworking of the sand-sized fluvial sediments. The silt- and clay-sized sediments found in fluvial channels, bar tops, and playas generated dust plumes during high wind events. Our operation sought to capture the variability in this system by sampling from the range of fluvial and aeolian features 6.3 km (proximal), 11.3 km (medial), and 14.4 km (distal) along the river from its origin at the base of glacier.

Published
2020

16. The Stratigraphy of Central and Western Butte and the Greenheugh Pediment Contact

Author

Bryk, A. B, Dietrich, W. E, Fox, V. K, Bennett, K. A, Banham, S. G, Lamb, M. P, Grotzinger, J. P, Vasavada, A. R, Stack, K. M, Arvidson, R, Fedo, C. M, Gupta, S, Wiens, R. C, Williams, R. M. E, Kronyak, R.E, Turner, M. L, Lewis, K. W, Rubin, D. M, Rapin, W. N, Deit, L. Le, Mouélic, S. Le, Edgett, K. S, Fraeman, A. A, Hughes, M. N, Kah, L. C, and Bedford, C. C

Subjects
Space Sciences (General)
Abstract

The Greenheugh pediment at the base of Aeolis Mons (Mt. Sharp), which may truncate units in the Murray formation and is capped by a thin sandstone unit, appears to represent a major shift in climate history within Gale crater. The pediment appears to be an erosional remnant of potentially a much more extensive feature. Curiosity’s traverse through the southern extent of Glen Torridon (south of Vera Rubin ridge) has brought the rover in contact with several new stratigraphic units that lie beneath the pediment. These strata were visited at two outcrop-forming buttes (Central and Western butte- both remnants of the retreating pediment) south of an orbitally defined boundary marking the transition from the Fractured Clay-bearing Unit (fCU) and the fractured Intermediate Unit (fIU). Here we present preliminary interpretations of the stratigraphy within Central and Western buttes and propose the Western butte cap rocks do not match the pediment capping unit.

Published
2020

17. Clay Sediments from Basaltic Terrains: Implications for Sedimentary Processes on Mars

Author

Thorpe, M. T, Rampe, E. B, Siebach, K. L, Bedford, C. C, Ewing, R.C, Christoffersen, R, Sinha, P, Horgan, B, Lapotre, M, Nachon, M, Mason, K, and Champion, E

Subjects
Lunar And Planetary Science And Exploration
Abstract

The Mars Science Laboratory (MSL) rover, Curiosity, has been traversing across fluvial, lacustrine, and eolian sedimentary rocks since it touched down in 2012. The CheMin X-ray diffractometer (XRD) on board Curiosity has revealed smectite clay minerals in most fluvio-lacustrine samples and abundant X-ray amorphous materials in all samples analyzed to date. For example, mudstones from the Sheepbed member at the base of the stratigraphic section and the lower part of the Murray formation contain on average ~7 to 20 wt% smectite and ~30 to 46 wt% X-ray amorphous abundances. On Earth, smectite and secondary X-ray amorphous materials are juvenile weathering products that are generated in sedimentary environments and ultimately record the interaction between primary igneous minerals and the hydrosphere, atmosphere, and biosphere. For this study, we investigated glacio-fluvio-eolian sediments generated in basaltic terrains as terrestrial analogs for the mudstones from Gale Crater, Mars. This work focuses on the clay sized sediments (<2 μm) from these deposits as this grain size hosts the most mineralogically and geochemically altered detritus in sedimentary environments. The goal of investigating basaltic sedimentation is to create a terrestrial reference frame that sheds light on the paleoclimate and paleoaqueous conditions responsible for shaping the ancient sedimentary environments of Mars (e.g., Gale Crater and Jezero Crater).

Published
2020

18. Estimated GFR and the Effect of Intensive Blood Pressure Lowering After Acute Intracerebral Hemorrhage

Author

Anderson, C.S., Chalmers, J., Arima, H., Davis, S., Heeley, E., Huang, Y., Lavados, P., Neal, B., Parsons, M.W., Lindley, R., Morgenstern, L., Robinson, T., Stapf, C., Tzourio, C., Wang, J.G., Chen, S., Chen, X.Y., Cui, L., Liu, Z., Lu, C., Wang, J., Wu, S., Xu, E., Yang, Q., Zhang, C., Zhang, J., Beer, R., Schmutzhard, E., Redondo, P., Kaste, M., Soinne, L., Tatlisumak, T., Wartenberg, K., Ricci, S., Klijn, K., Azevedo, E., Chamorro, A., Arnold, M., Fischer, U., Kaul, S., Pandian, J., Boyini, H., Singh, S., Rabinstein, A.A., Estol, C., Silva, G., Olavarria, V.V., Robinson, T.G., Simes, R.J., Bousser, M.-G., Hankey, G., Jamrozik, K., Johnston, S.C., Li, S., Bailey, K., Cheung, T., Delcourt, C., Chintapatla, S., Ducasse, E., Erho, T., Hata, J., Holder, B., Knight, E., Leroux, M., Sassé, T., Odgers, E., Walsh, R., Wolfowicz, Z., Chen, G., Fuentes, S., Peng, B., Schneble, H.-M., Wang, M.-X., Billot, L., Heritier, S., Li, Q., Woodward, M., Abimbola, S., Anderson, S., Chan, E., Cheng, G., Chmielnik, P., Leighton, S., Liu, J.-Y., Rasmussen, B., Saxena, A., Tripathy, S., Armenis, M., Baig, M.A., Naidu, B., Starzec, G., Steley, S., Moles, A., Ruiz, A., Zimmermann, M., Marinho, J., Alves, S., Angelim, R., Araujo, J., Kawakami, L., Bustos, C., Gonzalez, F., Munoz Venturelli, P., Chen, X., Jia, R., Li, N., Qu, S., Shu, Y., Song, A., Sun, J., Xiao, J., Zhao, Y., Huang, Q., Vicaut, E., Chamam, A., Viaud, M.-C., Dert, C., Fiedler, U., Jovis, V., Kabla, S., Marchand, S., Pena, A., Rochaud, V., Mallikarjuna, K., Hasan, N., Berge, E., Sandset, E.C., Forårsveen, A.S., Richardson, D., Kumar, T., Lewin, S., Poulter, N., Field, J., Anjum, A., Wilson, A., Perelmuter, H., Agarie, A.M., Barboza, A.G., Recchia, L.A., Miranda, I.F., Rauek, S.G., Duplessis, R.J., Dewey, H., Walker, L., Petrolo, S., Bladin, C., Sturm, J., Crimmins, D., Griffiths, D., Schutz, A., Zenteno, V., Miteff, F., Spratt, N., Kerr, E., Levi, C.R., Phan, T.G., Ma, H., Sanders, L., Moran, C., Wong, K., Read, S., Henderson, R., Wong, A., Hull, R., Skinner, G., Hand, P., Yan, B., Tu, H., Campbell, B., Blacker, D.J., Wijeratne, T., Pathirage, M., Jasinararchchi, M., Matkovic, Z., Celestino, S., Gruber, F., Vosko, M.R., Diabl, E., Rathmaier, S., Pfausler, B., Helbok, R., Fazekas, F., Fischer, R., Poltrum, B., Zechner, B., Trummer, U., Rutgers, M.P., Peeters, A., Dusart, A., Duray, M.-C., Parmentier, C., Ferrao-Santos, S., Brouns, R., De Raedt, S., De Smedt, A., VanHooff, R.-J., De Keyser, J., Martins, S.C.O., de Almeida, A.G., Broudani, R., Titton, N.F., de Freitas, G.R., Cardoso, F.M., Giesel, L.M., Lima, N.A., Jr, Ferraz de Almeida, A.C., Gomes, R.B., Borges dos Santos, T.S., Veloso Soares, E.M., Neto, O.L.A., Silva, G.S., Gomes, D.L., de Carvalho, F.A., Miranda, M., Marques, A., Zétola, V.F., de Matia, G., Lange, M.C., Montes, J., Reccius, A., Soto, A., Rivas, R., Klapp, C., Illanes, S., Aguilera, C., Castro, A., Figueroa, C., Benavides, J., Salamanca, P., Concha, M.C., Pajarito, J., Araya, P., Guerra, F., Li, Y., Liu, G., Wang, B., Chong, Y., He, M., Wang, L., Liu, J., Zhang, X., Lai, C., Jiang, H., Cui, S., Tao, Q., Zhang, Y., Yao, S., Xu, M., Xiao, H., Hu, J., Tang, J., Ji, H., Jiang, M., Yu, F., Yang, X., Guo, X., Wang, Y., Wu, L., Gao, Y., Sun, D., Huang, X., Liu, L., Li, P., Jiang, Y., Li, H., Lu, H., Zhou, J., Yuan, C., Qi, X., Qiu, F., Qian, H., Wang, W., Sun, W., Li, F., Liu, R., Peng, Q., Ren, Z., Fan, C., Wang, H., Wang, T., Shi, F., Duan, C., Chen, Z., Tan, X., Zhao, Z., Chen, J., Han, T., Zhang, L., Hu, Q., Hou, Q., Zhao, X., Zeng, G., Ma, L., Wang, F., Zeng, L., Guo, Z., Fu, Y., Song, Y., Tai, L., Liu, X., Su, X., Yang, Y., Dong, R., Xu, Y., Tian, S., Cheng, S., Su, L., Xie, X., Xu, T., Geng, D., Yan, X., Fan, H., Zhao, N., Wang, S., Yang, J., Yan, M., Li, L., Li, Z., Xu, X., Lian, Y., Sun, H., Liu, D., Wang, N., Tang, Q., Han, Z., Feng, L., Cui, Y., Tian, J., Chang, H., Sun, X., Liu, C., Wen, Z., Lin, Q., Sun, L., Hu, B., Zou, M., Bao, Q., Lin, X., Zhao, L., Tian, X., Wang, X., Li, X., Hao, L., Duan, Y., Wang, R., Wei, Z., Ren, S., Ren, H., Dong, Y., Cheng, Y., Liu, W., Han, J., Zhang, Z., Zhu, J., Qian, J., Sun, Y., Liu, K., Long, F., Peng, X., Zhang, Q., Yuan, Z., Wang, C., Huang, M., He, P., You, Y., Xia, J., Zhou, L., Hou, Y., Qi, Y., Mei, L., Lu, R., Ping, L., Zhou, S., Zhang, S., Zou, R., Guo, J., Li, M., Wei, W., Curtze, S., Saarela, M., Strbian, D., Scheperjans, F., De Broucker, T., Henry, C., Cumurciuc, R., Ibos-Augé, N., Zéghoudi, A.-C., Pico, F., Dereeper, O., Simian, M.-C., Boisselier, C., Mahfoud, A., Timsit, S., Merrien, F.M., Guillon, B., Sevin, M., Herisson, F., Magne, C., Ameri, A., Cret, C., Stefanizzi, S., Klapzcynski, F., Denier, C., Sarov-Riviere, M., Reiner, P., Mawet, J., Hervé, D., Buffon, F., Touzé, E., Domigo, V., Lamy, C., Calvet, D., Pasquini, M., Alamowitch, S., Favrole, P., Muresan, I.-P., Crozier, S., Rosso, C., Pires, C., Leger, A., Deltour, S., Cordonnier, C., Henon, H., Rossi, C., Zuber, M., Bruandet, M., Tamazyan, R., Join-Lambert, C., Juettler, E., Krause, T., Maul, S., Endres, M., Jungehulsing, G.J., Hennerici, M., Griebe, M., Sauer, T., Knoll, K., Huber, R., Knauer, K., Knauer, C., Raubold, S., Schneider, H., Hentschel, H., Lautenschläger, C., Schimmel, E., Dzialowski, I., Foerch, C., Lorenz, M., Singer, O., Meyer dos Santos, I.M.R., Hartmann, A., Hamann, A., Schacht, A., Schrader, B., Teíchmann, A., Wartenberg, K.E., Mueller, T.J., Jander, S., Gliem, M., Boettcher, C., Rosenkranz, M., Beck, C., Otto, D., Thomalla, G., Cheng, B., Wong, K.S., Leung, T.W., Soo, Y.O.Y., Prabhakar, S., Kesavarapu, S.R., Gajjela, P.K., Chenna, R.R., Ummer, K., Basheer, M., Andipet, A., Jagarlapudi, M.K.M., Mohammed, A.U.R., Pawar, V.G., Eranki, S.S.K., Singh, Y., Akhtar, N., Borah, N.C., Ghose, M., Choudhury, N., Ichaporia, N.R., Shendge, J., Khese, S., Pamidimukkala, V., Inbamuthaiah, P., Nuthakki, S.R., Tagallamudi, N.M.R., Gutti, A.K., Khurana, D., Kesavarapu, P., Jogi, V., Garg, A., Samanta, D., Sarma, G.R.K., Nadig, R., Mathew, T., Anandan, M.A., Caterbi, E., Zini, A., Cavazzuti, M., Casoni, F., Pentore, R., Falzone, F., Mazzoli, T., Greco, L.M., Menichetti, C., Coppola, F., Cenciarelli, S., Gallinella, E., Mattioni, A., Condurso, R., Sicilia, I., Zampolini, M., Corea, F., Barbi, M., Proietti, C., Toni, D., Pieroni, A., Anzini, A., Falcou, A., Demichele, M., Klijn, C.J.M., Tveiten, A., Thortveit, E.T., Pettersen, S., Holand, N., Hitland, B., Johnsen, S.H., Eltoft, A., Wasay, M., Kamal, A., Iqrar, A., Ali, L., Begum, D., Gama, G., Fonseca, L., Moreira, G., Veloso, L.M., Pinheiro, D., Paredes, L., Rozeira, C., Gregorio, T., Segura Martin, T., Ayo, O., Garcia-Garcia, J., Feria Vilar, I., Gómez Fernández, I., Amaro, S., Urra, X., Obach, V., Cervera, A., Silva, Y., Serena, J., Castellanos, M., Terceno, M., Van Eendenburg, C., Weck, A., Findling, O., Lüdi, R., Warburton, E.A., Day, D., Butler, N., Bumanlag, E., Caine, S., Steele, A., Osborn, M., Dodd, E., Murphy, P., Esisi, B., Brown, E., Hayman, R., Baliga, V.K.V., Minphone, M., Kennedy, J., Reckless, I., Pope, G., Teal, R., Michael, K., Manawadu, D., Kalra, L., Lewis, R., Mistry, B., Cattermole, E., Hassan, A., Mandizvidza, L., Bamford, J., Brooks, H., Bedford, C., Whiting, R., Baines, P., Hussain, M., Harvey, M., Fotherby, K., McBride, S., Bourke, P., Morgan, D., Jennings-Preece, K., Price, C., Huntley, S., Riddell, V.E., Storey, G., Lakey, R.L., Subramanian, G., Jenkinson, D., Kwan, J., David, O., Tiwari, D., James, M., Keenan, S., Eastwood, H., Shaw, L., Kaye, P., Button, D., Madigan, B., Williamson, D., Dixit, A., Davis, J., Hossain, M.O., Ford, G.A., Parry-Jones, A., O'Loughlin, V., Jarapa, R., Naing, Z., Lovelock, C., O'Reilly, J., Khan, U., Bhalla, A., Rudd, A., Birns, J., Werring, D.J., Law, R., Perry, R., Jones, I., Erande, R., Roffe, C., Natarajan, I., Ahmad, N., Finney, K., Lucas, J., Mistri, A., Eveson, D., Marsh, R., Haunton, V., Fugate, J.E., Lepore, S.W., Zheng, Danni, Sato, Shoichiro, Arima, Hisatomi, Heeley, Emma, Delcourt, Candice, Cao, Yongjun, Chalmers, John, and Anderson, Craig S.

Published
2016
Full Text
View/download PDF

19. The impact of compositional changes on random forest predictions: applica-tion to chemcam libs data from gale crater, mars

Author

Rammelkamp, K., Gasnault, O., Bedford, C. C., Dehouck, E., Schroder, S., German Aerospace Center (DLR), DLR Institute of Optical Sensor Systems, Deutsches Zentrum für Luft- und Raumfahrt [Berlin] (DLR), Institut de recherche en astrophysique et planétologie (IRAP), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Universities Space Research Association (USRA), Astromaterials Research and Exploration Science (ARES), NASA Johnson Space Center (JSC), NASA-NASA, Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement (LGL-TPE), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS), and Lunar and Planetary Institute

Subjects
[SDU.STU.PL]Sciences of the Universe [physics]/Earth Sciences/Planetology, [SDU]Sciences of the Universe [physics], [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP]
Abstract

International audience

Published
2023

20. Long-term (180-day) outcomes in critically ill patients with COVID-19 in the REMAP-CAP randomized clinical trial

Author

Florescu, S, Stanciu, D, Zaharia, M, Kosa, A, Codreanu, D, Kidwai, A, Masood, S, Kaye, C, Coutts, A, MacKay, L, Summers, C, Polgarova, P, Farahi, N, Fox, E, McWilliam, S, Hawcutt, D, Rad, L, O’Malley, L, Whitbread, J, Jones, D, Dore, R, Saunderson, P, Kelsall, O, Cowley, N, Wild, L, Thrush, J, Wood, H, Austin, K, Bélteczki, J, Magyar, I, Fazekas, Á, Kovács, S, Szőke, V, Donnelly, A, Kelly, M, Smyth, N, O’Kane, S, McClintock, D, Warnock, M, Campbell, R, McCallion, E, Azaiz, A, Charron, C, Godement, M, Geri, G, Vieillard-Baron, A, Johnson, P, McKenna, S, Hanley, J, Currie, A, Allen, B, McGoldrick, C, McMaster, M, Mani, A, Mathew, M, Kandeepan, R, Vignesh, C, TV, B, Ramakrishnan, N, James, A, Elvira, E, Jayakumar, D, Pratheema, R, Babu, S, Ebenezer, R, Krishnaoorthy, S, Ranganathan, L, Ganesan, M, Shree, M, Guilder, E, Butler, M, Cowdrey, K-A, Robertson, M, Ali, F, McMahon, E, Duffy, E, Chen, Y, Simmonds, C, McConnochie, R, O’Connor, C, El-Khawas, K, Richardson, A, Hill, D, Commons, R, Abdelkharim, H, Saxena, M, Muteithia, M, Dobell-Brown, K, Jha, R, Kalogirou, M, Ellis, C, Krishnamurthy, V, O’Connor, A, Thurairatnam, S, Mukherjee, D, Kaliappan, A, Vertue, M, Nicholson, A, Riches, J, Maloney, G, Kittridge, L, Solesbury, A, Ramos, A, Collins, D, Brickell, K, Reid, L, Smyth, M, Breen, P, Spain, S, Curley, G, McEvoy, N, Geoghegan, P, Clarke, J, Silversides, J, McGuigan, P, Ward, K, O’Neill, A, Finn, S, Wright, C, Green, J, Collins, É, Knott, C, Smith, J, Boschert, C, Slieker, K, Ewalds, E, Sanders, A, Wittenberg, W, Geurts, H, Poojara, L, Sara, T, Nand, K, Reeve, B, Dechert, W, Phillips, B, Oritz-Ruiz de Gordoa, L, Affleck, J, Shaikh, A, Murray, A, Ramanan, M, Frakking, T, Pinnell, J, Robinson, M, Gledhill, L, Wood, T, Sanghavi, R, Bhonagiri, D, Ford, M, Parikh, HG, Avard, B, Nourse, M, McDonald, B, Edmunds, N, Hoiting, O, Peters, M, Rengers, E, Evers, M, Prinssen, A, Morgan, M, Cole, J, Hill, H, Davies, M, Williams, A, Thomas, E, Davies, R, Wise, M, Grimm, P, Soukup, J, Wetzold, R, Löbel, M, Starke, L, Lellouche, F, Lizotte, P, Declerq, P, Antoine, M, Stephanie, G, Jean-Pierre, E, François, B, Marion, B, Philippe, R, Pourcine, F, Monchi, M, Luis, D, Mercier, R, Sagnier, A, Verrier, N, Caplin, C, Richecoeu, J, Combaux, D, Siami, S, Aparicio, C, Vautier, S, Jeblaoui, A, Lemaire-Brunel, D, D'Aragon, F, Carbonneau, E, Leblond, J, Plantefeve, G, Leparco, C, Contou, D, Fartoukh, M, Courtin, L, Labbe, V, Voiriot, G, Salhi, S, Chassé, M, Carrier, F, Boumahni, D, Benettaib, F, Ghamraoui, A, Sement, A, Gachet, A, Hanisch, A, Haffiane, A, Boivin, A-H, Barreau, A, Guerineau, E, Poupblanc, S, Egreteau, P, Lefevre, M, Bocher, S, Le Loup, G, Le Guen, L, Carn, V, Bertel, M, Antcliffe, D, Templeton, M, Rojo, R, Coghlan, P, Smee, J, Barker, G, Finn, A, Kreb, G, Hoff, U, Hinrichs, C, Nee, J, Mackay, E, Cort, J, Whileman, A, Spencer, T, Spittle, N, Beavis, S, Padmakumar, A, Dale, K, Hawes, J, Moakes, E, Gascoyne, R, Pritchard, K, Stevenson, L, Cooke, J, Nemeth-Roszpopa, K, Gauli, B, Bastola, S, Muller, G, Nay, M-A, Kamel, T, Benzekri, D, Jacquier, S, Runge, I, Mathonnet, A, Barbier, F, Bretagnol, A, Carter, J, Van Der Heyden, K, Mehrtens, J, Morris, A, Morgan, S, Burke, T, Mercier, E, Chartier, D, Salmon, C, Dequin, P-F, Garot, D, Bellemare, D, Cloutier, È, Daher, R, Costerousse, O, Boulanger, M-C, Couillard-Chénard, É, Lauzier, F, Francoeur, C, Francois, B, Gay, A, Anne-Laure, F, Ramali, M, HC, O, Ghosh, A, Osagie, R, Arachchige, M, Hartley, M, Cheung, W, Wong, H, Seigne, P, Eustace, J, O'Callaghan, A-M, O'Brien, F, Bamford, P, Reid, A, Cawley, K, Faulkner, M, Pickering, C, Raj, A, Tsinaslanidis, G, Khade, R, Agha, G, Sekiwala, R, Smith, T, Brewer, C, Gregory, J, Limb, J, Cowton, A, O’Brien, J, Postlethwaite, K, Malakouti, S, Music, E, Ricketts, D, King, A, Clermont, G, Bart, R, Mayr, F, Schoenling, A, Andreae, M, Shetty, V, Brant, E, Malley, B, Donadee, C, Sackrowitz, R, Weissman, A, Yealy, D, Barton, D, Talia, N, Nikitas, N, Wells, C, Lankester, L, McMillan, H, Van den Oever, H, Kruisdijk-Gerritsen, A, Haidar, G, Bain, W, Barbash, I, Fitzpatrick, M, Franz, C, Kitsios, G, Moghbeli, K, Rosborough, B, Shah, F, Suber, T, Pulletz, M, Williams, P, Birch, J, Wiseman, S, Horton, S, Alegria, A, Turki, S, Elsefi, T, Crisp, N, Allen, L, Truman, N, Smith, M, Chukkambotla, S, Goddard, W, Duberley, S, Khan, M, Kazi, A, Simpson, J, Duke, G, Chan, P, Carter, B, Hunter, S, Voigt, I, Schueler, R, Blank, E, Hüning, V, Steffen, M, Goralski, P, Litton, E, Regli, A, Pellicano, S, Palermo, A, Eroglu, E, Bihari, S, Laver, RD, Jin, X, Brown, J, McIntyre, J, French, C, Bates, S, Towns, M, Yang, Y, McGain, F, McCullagh, I, Cairns, T, Hanson, H, Patel, B, Clement, I, Evetts, G, Touma, O, Holland, S, Hodge, C, Taylor, H, Alderman, M, Barnes, N, Da Rocha, J, Smith, C, Brooks, N, Weerasinghe, T, Sinclair, J-A, Abusamra, Y, Doherty, R, Cudlipp, J, Singh, R, Yu, H, Daebis, A, Ng, C, Kendrick, S, Saran, A, Makky, A, Greener, D, Rowe-Leete, L, Edwards, A, Bland, Y, Dolman, R, Foster, T, Laffey, J, McNicholas, B, Scully, M, Casey, S, Kernan, M, Brennan, A, Rangan, R, Tully, R, Corbett, S, McCarthy, A, Duffy, O, Burke, D, Linnett, V, Sanderson, A, Ritzema, J, Wild, H, Lucas, R, Marriott, Y, Andric, Z, Cviljevic, S, Br, R, Zapalac, M, Mirković, G, Khare, D, Pinder, M, Gopinath, A, Kannan, T, Dean, S, Vanmali, P, Depuydt, P, De Waele, J, De Bus, L, Fierens, J, Bracke, S, Vermassen, J, Vermeiren, D, Pugh, R, Lean, R, Qiu, X, Scanlan, J, Evans, A, Davies, G, Lewis, J, Plesnikova, Y, Khoud, A, Coetzee, S, Puxty, K, Cathcart, S, Rimmer, D, Bagot, C, Scott, K, Martin, L, Yusuff, H, Isgro, G, Brightling, C, Bourne, M, Craner, M, Boyles, R, Alexander, B, Roberts, T, Nelli, A, Rosenstein-Sisson, R, Speyer, R, Pech, Y, McCullough, J, Tallott, M, Vazquez-Grande, G, Marten, N, Liu, T, Siddiqui, A, Khanal, S, Amatya, S, Szakmany, T, Cherian, S, Williams, G, James, C, Waters, A, Prout, R, Stedman, R, Davies, L, Pegler, S, Kyeremeh, L, Moorhouse, L, Arbane, G, Marotti, M, Bociek, A, Campos, S, Van Nieuwkoop, K, Ottens, T, Visser, Y, Van den Berg, L, Van der Kraan-Donker, A, Brett, S, Arias, S, Hall, R, Paneru, H, Koirala, S, Paudel, P, Wilson, M, Vaara, S, Pettilä, L, Heinonen, J, Pettilä, V, Jain, S, Gupta, A, Holbrook, C, Antoine, P, Meziani, F, Allam, H, Cattelan, J, Clere-Jehl, R, Helms, J, Kummerlen, C, Merdji, H, Monnier, A, Rahmani, H, Studer, A, Schneider, F, Castelain, V, Morel, G, L’Hotellier, S, Ochin, E, Vanjak, C, Rouge, P, Bendjemar, L, Albert, M, Serri, K, Cavayas, A, Duplaix, M, Williams, V, Catorze, NJTADS, Pereira, TNAL, Ferreira, RMC, Bastos, JMPS, Batista, TMO, Badie, J, Berdaguer, F, Malfroy, S, Mezher, C, Bourgoin, C, Moneger, G, Bouvier, E, Muñoz-Bermúdez, R, Marin-Corral, J, Degracia, A, Gómez, F, López, M, Aceto, R, Aghemo, A, Badalamenti, S, Brunetta, E, Cecconi, M, Ciccarelli, M, Constantini, E, Greco, M, Folci, M, Selmi, C, Voza, A, Henning, J, Bonner, S, Hugill, K, Cirstea, E, Wilkinson, D, Jones, J, Altomy, M, Karlikowski, M, Sutherland, H, Wilhelmsen, E, Woods, J, North, J, Pletz, M, Hagel, S, Ankert, J, Kolanos, S, Bloos, F, Simons, K, Van Zuylen, T, Bouman, A, Kumar, N, Panwar, R, Poulter, A-L, Sunkara, K, Szigligeti, G, Leszkoven, J, Rochwerg, B, Karachi, T, Oczkowski, S, Centofanti, J, Millen, T, Sundaran, D, Hollos, L, Turns, M, Walsh, J, Al Qasim, E, Alswaidan, L, Hegazy, M, Arishi, H, Al Amri, A, AlQahtani, S, Naidu, B, Tlayjeh, H, Hussain, S, Al Enezi, F, Abdukahil, SA, Hopkins, P, Noble, H, O’Reilly, K, Mehta, R, Wong, O, Makanju, E, Rao, D, Sikondari, N, Saha, S, Corcoran, E, Pappa, E, Cockrell, M, Donegan, C, Balaie, M, Nickoleit-Bitzenberger, D, Schaaf, B, Meermeier, W, Prebeg, K, Azzaui, H, Hower, M, Brieger, K-G, Elender, C, Sabelhaus, T, Riepe, A, Akamp, C, Kremling, J, Klein, D, Landsiedel-Mechenbier, E, Laha, S, Verlander, M, Jha, A, Megarbane, B, Voicu, S, Deye, N, Malissin, I, Sutterlin, L, Mrad, A, Lehalleur, A, Naim, G, Nguyen, P, Ekhérian, J-M, Boué, Y, Sidéris, G, Vodovar, D, Guérin, E, Grant, C, Brain, M, Mineall, S, Paramasivam, E, Wilby, E, Ogg, B, Howcroft, C, Aspinwall, A, Charlton, S, Gould, R, Mistry, D, Awan, S, Bedford, C, Carr-Wilkinson, J, Hall, A, Gardiner-Hill, C, Maloney, C, Brunskill, N, Watchorn, O, Hardy, C, Qureshi, H, Flint, N, Nicholson, S, Southin, S, Ghattaoraya, A, Harding, D, O’Halloran, S, Collins, A, Smith, E, Trues, E, Borgatta, B, Turner-Bone, I, Reddy, A, Wilding, L, Wilson, C, Surti, Z, Aneman, A, Miller, J, White, H, Estensen, K, Morrison, L, Sutton, J, Cooper, M, Warnapura, L, Agno, R, Sathianathan, P, Shaw, D, Ijaz, N, Spong, A, Sabaretnam, S, Burns, D, Lang, E, Tate, M, Fischer, R, Biradar, V, Soar, N, Golden, D, Davey, M, Seaman, R, Osborne, A, Bannard-Smith, J, Clark, R, Birchall, K, Henry, J, Pomeroy, F, Quayle, R, Wylie, K, Sukuraman, A, John, M, Sibin, S, Leditschke, A, Finnis, M, Jongebloed, K, Khwaja, K, Campisi, J, Van Vonderen, M, Pietersma, M, Vrolijk, L, Kampschreur, L, Van Gulik, L, Makowski, A, Misztal, B, Haider, S, Liao, A, Squires, R, Oborska, A, Kayani, A, Kalchko-Veyssal, S, Prabakaran, R, Hadebe, B, KalchkoVeyssal, S, Williams, T, Song, R, Morpeth, S, Lai, V, Habraken, H, Stewart, R, Mwaura, E, Mew, L, Wren, L, Willams, F, Sutherland, S-B, Rebello, R, Shehabi, Y, Al-Bassam, W, Hulley, A, Kadam, U, Sathianathan, K, Innes, R, Doble, P, Graham, L, Shovelton, C, Dean, T, Salahuddin, N, Aryal, D, Koirala, K, Rai, N, Luitel, S, Seppelt, I, Whitehead, C, Lowrey, J, Gresham, R, Masters, K, Hamlyn, V, Hawkins, N, Roynon-Reed, A, Cutler, S, Lewis, S, Lazaro, J, Newman, T, Aravindan, L, Asghar, A, Bartholomew, J, Bayne, M, Beddows, S, Birch, C, Brend, M, Byrne, R, Campbell, D, Campbell, H, Chambers, E, Clinton, A, Collins, J, Crawshaw, S, Dawson, LA, Donaldson, K, Drake, C, Dyas, S, Ellis, Y, Gilmour, K, Goodwin, J, Halden, S, Hall, AS, Hanson, J, Harper, H, Harrison, S, Hayes, A, Hodgson, H, Hurford, S-A, Jackson, S, Levett, C, Lock, S, Lockett, T, Logan, M, Lomme, K, Luo, J, Marsh, E, Mguni, N, Monaghan, H, Murphy, S, Muzengi, N, Naz, M, O'Kell, E, Oliver, A, O'Reilly, J, Pearson, K, Porter, D, Potter, A, Rook, C, Rounds, C, Sheffield, J, Shirley, K, Siewersk, C, Skinner, T, Speight, H, Sutu, M, Unsworth, A, Van’t Hoff, W, Walker, S, Williams, H, Williamson, D, Williamson, JD, Duan, E, Tsang, J, Patterson, L, Austin, P, Chapman, S, Cabrelli, L, Fletcher, S, Nortje, J, Fottrell-Gould, D, Randell, G, Stammers, K, Healey, G, Pinto, M, Borrill, Z, Duncan, T, Ustianowski, A, Uriel, A, Eltayeb, A, Alfonso, J, Hey, S, Shaw, J, Fox, C, Lindergard, G, Charles, B, Blackledge, B, Connolly, K, Harris, J, Cuesta, J, Xavier, K, Purohit, D, Elhassan, M, Haldeos, A, Vincent, R, Abdelrazik, M, Jenkins, S, Ganesan, A, Kumar, R, Carter, D, Bakthavatsalam, D, Frater, A, Saleem, M, Everitt, R, Hacking, D, Zaman, M, Elmahi, E, Jones, A, Hall, K, Phillips, M, Terrill, L, Mills, G, Raithatha, A, Bauchmuller, K, Ryalls, K, Harrington, K, Bowler, H, Sall, J, Bourne, R, Gross, J, Massey, N, Adebambo, O, Long, M, Tony, K, Juffermans, N, Koopmans, M, Dujardin, R, Alderink, B, Rowland, M, Hutton, P, Bashyal, A, Davidson, N, Hird, C, Chhablani, M, Phalod, G, Kirkby, A, Archer, S, Netherton, K, Reschreiter, H, Camsooksai, J, Patch, S, Humphrey, C, Flynn, G, Harrington, C, Kruger, P, Walsham, J, Meyer, J, Harward, M, Jones, C, Sathe, S, Roche, L, Davies, E, Skinner, D, Gaylard, J, Newman, J, Pogson, D, Rose, S, Daly, Z, Brimfield, L, Nown, A, Parekh, D, Bergin, C, Bates, M, McGhee, C, Lynch, D, Bhandal, K, Tsakiridou, K, Bamford, A, Cooper, L, Whitehouse, T, Veenith, T, Forster, E, O'Connell, M, Sim, M, Hay, S, Henderson, S, Nygren, M, Valentine, E, Katary, A, Bell, G, Wilcox, L, Mataliotakis, M, Smith, P, Ali, M, Isguzar, A, Phull, M-K, Zaidi, A, Pogreban, T, Rosaroso, L, Harvey, D, Lowe, B, Meredith, M, Ryan, L, Schouten, J, Pickkers, P, Roovers, N, Klop-Riehl, M, Van der Eng, H, Sloots-Cuppen, S, Preijers, L, Van Oosten, N, Moine, P, Heming, N, Maxime, V, Bossard, I, Nicholier, T, Clair, B, Orlikowski, D, Bounab, R, Abdeladim, L, Baker, S, Duroux, M, Ratcliffe, M, Sy, E, Mailman, J, Lee, S, Gupta, C, Kassir, S, López, R, Rodríguez-Gómez, J, Cárcel, S, Carmona, R, De la Fuente, C, Rodriguez, M, Jan Hassing, R, Greven, F, Huijbens, D, Roebers, L, Verheij, H, Miles, H, Attokaran, A, Buehner, U, Williams, E, Chapman, M, O’Connor, S, Glasby, K, Rivett, J, Brown, N, Kutsogiannis, D, Thompson, P, Rooney, K, Rodden, N, Thomson, N, McGlynn, D, Abel, L, Gemmell, L, Sundaram, R, Hornsby, J, Walden, A, Keating, L, Frise, M, Rai, S, Bartley, S, Schuster-Bruce, M, Pitts, S, Miln, R, Purandare, L, Vamplew, L, Dempster, D, Gummadi, M, Dormand, N, Wang, S, Spivey, M, Bean, S, Burt, K, Moore, L, Hammonds, F, Richards, C, Campbell, L, Smyth, K, Day, C, Zitter, L, Benyon, S, Singh, J, Lynch, C, Mikusek, J, Deacon, B, Turner, K, Baker, E, Hickey, J, Champanerkar, S, Aitken, L, LewisProsser, L, Ahmad, N, Wiles, M, Willson, J, Grecu, I, Martin, J, Wrey Brown, C, Arias, A-M, Bevan, E, Westlake, S, Craven, T, Hope, D, Singleton, J, Clark, S, McCulloch, C, Biddie, S, Welters, I, Hamilton, D, Williams, K, Waugh, V, Mulla, S, Waite, A, Roman, J, Martinez, M, Johnston, B, Puthucheary, Z, Martin, T, Santos, F, Uddin, R, Fernandez, M, Seidu, F, Somerville, A, Pakats, M-L, Begum, S, Shahid, T, Presneill, J, Barge, D, Byrne, K, Janin, P, Yarad, E, Bass, F, Hammond, N, Vuylsteke, A, Chan, C, Victor, S, Waterson, S, McNamara, R, Boardman, M, Gattas, D, Buhr, H, Coles, J, Matsa, R, Gellamucho, M, Creagh-Brown, B, Marriot, C, Salberg, A, Zouita, L, Stone, S, Michalak, N, Donlon, S, Mtuwa, S, Mayangao, I, Verula, J, Burda, D, Harris, C, Jones, E, Bradley, P, Tarr, E, Harden, L, Piercy, C, Nolan, J, Kerslake, I, Cook, T, Simpson, T, Dalton, J, Demetriou, C, Mitchard, S, Ramos, L, White, K, Johnson, T, Headdon, W, Spencer, S, White, A, Howie, L, Reay, M, Watts, A, Traverse, E, Jennings, S, Anumakonda, V, Tuckwell, C, Harrow, K, Matthews, J, McGarry, K, Moore, V, Smith, L, Summerfield, A, Dark, P, Harvey, A, Doonan, R, McMorrow, L, Knowles, K, Pendlebury, J, Perez, J, Marsden, T, Taylor, M, Michael, A, Collis, M, Claxton, A, Habeichi, W, Horner, D, Slaughter, M, Thomas, V, Proudfoot, N, Keatley, C, Donnison, P, Casey, R, Irving, B, Matimba-Mupaya, W, Reed, C, Anthony, A, Trim, F, Cambalova, L, Robertson, D, Wilson, A, Hulme, J, Kannan, S, Kinney, F, Senya, H, Ratnam, V, Gill, M, Kirk, J, Shelton, S, Schweikert, S, Wibrow, B, Anstey, M, Rauniyar, R, Khoso, N, Asif, N, Taqdees, H, Frey, C, Scano, R, McKee, M, Murphy, P, Thomas, M, Worner, R, Faulkner, B, Gendall, E, Hayes, K, Blakemore, H, Borislavova, B, Deshpande, K, Van Haren, F, Konecny, P, Inskip, D, Tung, R, Hayes, L, Murphy, L, Neill, A, Reidy, B, O’Dwyer, M, Ryan, D, Ainscough, K, Hamilton-Davies, C, Mfuko, C, Abbass, H, Mandadapu, V, Leaver, S, Patel, K, Farnell-Ward, S, Saluzzio, R, Rawlins, S, Sicat, C, De Keulenaer, B, Ferrier, J, Fysh, E, Davda, A, Mevavala, B, Cook, D, Clarke, F, Banach, D, Fernández de Pinedo Artaraz, Z, Cabreros, L, Latham, V, Kruisselbrink, R, Brochard, L, Burns, K, Sandhu, G, Khalid, I, White, I, Croft, M, Holland, N, Pereira, R, Nair, P, Buscher, H, Reynolds, C, Newman, S, Santamaria, J, Barbazza, L, Homes, J, Smith, R, Zaki, A, Johnson, D, Garrard, H, Juhaz, V, Brown, L, Pemberton, A, Roy, A, Rostron, A, Woods, L, Cornell, S, Fowler, R, Adhikari, N, Kamra, M, Marinoff, N, Garrett, P, Murray, L, Brailsford, J, Fennessy, G, Mulder, J, Morgan, R, Pillai, S, Harford, R, Ivatt, H, Evans, D, Richards, S, Roberts, E, Bowen, J, Ainsworth, J, Kuitunen, A, Karlsson, S, Vahtera, A, Kiiski, H, Ristimäki, S, Albrett, J, Jackson, C, Kirkham, S, Tamme, K, Reinhard, V, Ellervee, A, Põldots, L, Rennit, P, Svitškar, N, Browne, T, Grimwade, K, Goodson, J, Keet, O, Callender, O, Udy, A, McCracken, P, Young, M, Board, J, Martin, E, Kasipandian, V, Patel, A, Allibone, S, Mary-Genetu, R, English, S, Watpool, I, Porteous, R, Miezitis, S, McIntyre, L, Brady, K, Vale, C, Shekar, K, Lavana, J, Parmar, D, Peake, S, Kurenda, C, Hormis, A, Walker, R, Collier, D, Kimpton, S, Oakley, S, Bhagani, S, De Neef, M, Garcia, S, Maharajh, A, Nandani, A, Dobson, J, Fernando, G, Eastgate, C, Gomez, K, Abdi, Z, Tatham, K, Jhanji, S, Black, E, Dela Rosa, A, Howle, R, Baikady, R, Drummond, A, Dearden, J, Philbin, J, Munt, S, Gopal, S, Pooni, J-S, Ganguly, S, Smallwood, A, Metherell, S, Naeem, A, Fagan, L, Ryan, E, Mariappa, V, Foulds, A, Revill, A, Bhattarai, B, De Jonge, E, Wigbers, J, Del Prado, M, Cremer, O, Mulier, J, Peters, A, Romberg, B, Schutgens, R, Troeman, D, Van Opdorp, M, Besten, H, Brakké, K, Barber, R, Hilldrith, A, Kluge, S, Nierhaus, A, Jarczak, D, Roedl, K, Kochanek, M, Rueß-Paterno, G, Mc-Kenzie, J, Eichenauer, D, Shimabukuro-Vornhagen, A, Wilcox, E, Del Sorbo, L, Abdelhady, H, Romagnuolo, T, Simpson, S, Maiden, M, Horton, M, Trickey, J, Krajinovic, V, Kutleša, M, Kotarski, V, Brohi, F, Jagannathan, V, Clark, M, Purvis, S, Wetherill, B, Brajković, A, Babel, J, Sever, H, Dragija, L, Kušan, I, Dushianthan, A, Cusack, R, De Courcy-Golder, K, Salmon, K, Burnish, R, Smith, S, Ruiz, W, Duke, Z, Johns, M, Male, M, Gladas, K, Virdee, S, Swabe, J, Tomlinson, H, Rohde, G, Grünewaldt, A, Bojunga, J, Petros, S, Kunz, K, Schütze, B, Weismann, D, Frey, A, Drayss, M, Goebeler, ME, Flor, T, Fragner, G, Wahl, N, Totzke, J, Sayehli, C, Hakak, S, Altaf, W, O'Sullivan, M, Murphy, A, Walsh, L, Rega La Valle, A, Bewley, J, Sweet, K, Grimmer, L, Johnson, R, Wyatt, R, Morgan, K, Varghese, S, Willis, J, Stratton, E, Kyle, L, Putensen, D, Drury, K, Skorko, A, Bremmer, P, Ward, G, Bassford, C, Sligl, W, Baig, N, Rewa, O, Bagshaw, S, Basile, K, Stavor, D, Burbee, D, McNamara, A, Wunderley, R, Bensen, N, Adams, P, Vita, T, Buhay, M, Scholl, D, Gilliam, M, Winters, J, Doherty, K, Berryman, E, Ghaffari, M, Marroquin, O, Quinn, K, Garrard, W, Kalchthaler, K, Beard, G, Skrtich, A, Bagavathy, K, Drapola, D, Bryan-Morris, K, Arnold, J, Reynolds, B, Hussain, M, Dunsavage, J, Saiyed, S, Hernandez, E, Goldman, J, Brown, C, Comp, S, Raczek, J, Morris, J, Vargas Jr., J, Weiss, D, Hensley, J, Kochert, E, Wnuk, C, Nemeth, C, Mowery, B, Hutchinson, C, Winters, L, McAdams, D, Walker, G, Minnier, T, Wisniewski, M, Mayak, K, McCreary, E, Bariola, R, Viehman, A, Daley, J, Lopus, A, Schmidhofer, M, Ambrosino, R, Keen, S, Toffalo, S, Stambaugh, M, Trimmer, K, Perri, R, Casali, S, Medva, R, Massar, B, Beyerl, A, Burkey, J, Keeler, S, Lowery, M, Oncea, L, Daugherty, J, Sevilla, C, Woelke, A, Dice, J, Weber, L, Roth, J, Ferringer, C, Beer, D, Fesz, J, Carpio, L, Colin, G, Zinzoni, V, Maquigneau, N, Henri-Lagarrigue, M, Pouplet, C, Reill, L, Distler, M, Maselli, A, Martynoga, R, Trask, K, Butler, A, Attwood, B, Parsons, P, Campbell, B, Smith, A, Page, V, Zhao, X, Oza, D, Abrahamson, G, Sheath, B, Young, P, Young, C, Lesona, E, Navarra, L, Cruz, R, Delaney, K, Aguilar-Dano, A, Gojanovic, M, Rhodes, J, Anderson, T, Morris, S, Nayyar, V, Bowen, D, Kong, J, Joy, J, Fuchs, R, Lambert, B, Tai, C, Thomas, A, Keen, A, Tierney, C, Omer, N, Bacon, G, Tridente, A, Shuker, K, Anders, J, Greer, S, Scott, P, Millington, A, Buchanan, P, Binnie, A, Powell, E, McMillan, A, Luk, T, Aref, N, Denmade, C, Sadera, G, Jacob, R, Hughes, D, Sterba, M, Geng, W, Digby, S, Southern, D, Reddy, H, Hulse, S, Campbell, A, Garton, M, Watkins, C, Smuts, S, Quinn, A, Simpson, B, McMillan, C, Finch, C, Hill, C, Cooper, J, Budd, J, Small, C, O’Leary, R, Collins, E, Holland, A, Alexander, P, Felton, T, Ferguson, S, Sellers, K, Ward, L, Yates, D, Birkinshaw, I, Kell, K, Scott, Z, Pearson, H, Hashmi, M, Hassan, N, Panjwani, A, Umrani, Z, Shaikh, M, Ain, Q, Kanwal, D, Van Bree, S, Bouw-Ruiter, M, Osinga, M, Van Zanten, A, McEldrew, R, Rashan, S, Singh, V, Azergui, N, Bari, S, Beltran, M, Brugman, C, Groeneveld, E, Jafarzadeh, M, Keijzer-Timmers, N, Kester, E, Koelink, M, Kwakkenbos-Craanen, M, Okundaye, C, Parker, L, Peters, S, Post, S, Rietveld, I, Scheepstra-Beukers, I, Schreuder, G, Smit, A, Brillinger, N, Markgraf, R, Eichinger, F, Doran, P, Anjum, A, Best-Lane, J, Barton, F, Miller, L, Richards-Belle, A, Saull, M, Sprinckmoller, S, Wiley, D, Darnell, R, Au, C, Lindstrum, K, Cheng, A, Forbes, A, Heritier, S, Trapani, T, Cuthbertson, B, Manoharan, V, Dondrop, A, Tolppa, T, Ehrmann, S, Hullegie, S, Povoa, P, Beasley, R, Daneman, N, McGloughlin, S, Paterson, D, Venkatesh, B, De Jong, M, Uyeki, T, Baillie, K, Netea, M, Orr, K, Patanwala, A, Tong, S, Cooper, N, Galea, J, Leavis, H, Ogungbenro, K, Patawala, A, Rademaker, E, Youngstein, T, Carrier, M, Fergusson, D, Hunt, B, Kumar, A, Laffan, M, Lother, S, Middeldorp, S, Stanworth, S, De Man, A, Masse, M-H, Abraham, J, Arnold, D, Begin, P, Charlewood, R, Chasse, M, Coyne, M, Daly, J, Gosbell, I, Harvala-Simmonds, H, MacLennan, S, McDyer, J, Menon, D, Pridee, N, Roberts, D, Thomas, H, Tinmouth, A, Triulzi, D, Walsh, T, Wood, E, Calfee, C, O’Kane, C, Shyamsundar, M, Sinha, P, Thompson, T, Young, I, Burrell, A, Ferguson, N, Hodgson, C, Orford, N, Phua, J, Baron, R, Epelman, S, Frankfurter, C, Gommans, F, Kim, E, Leaf, D, Vaduganathan, M, Van Kimmenade, R, Sanil, A, Van Beurden, M, Effelaar, E, Schotsman, J, Boyd, C, Harland, C, Shearer, A, Wren, J, Attanayaka, U, Darshana, S, Ishani, P, Udayanga, I, Higgins, AM, Berry, LR, Lorenzi, E, Murthy, S, McQuilten, Z, Mouncey, PR, Al-Beidh, F, Annane, D, Arabi, YM, Beane, A, Van Bentum-Puijk, W, Bhimani, Z, Bonten, MJM, Bradbury, CA, Brunkhorst, FM, Buzgau, A, Buxton, M, Charles, WN, Cove, M, Detry, MA, Estcourt, LJ, Fagbodun, EO, Fitzgerald, M, Girard, TD, Goligher, EC, Goossens, H, Haniffa, R, Hills, T, Horvat, CM, Huang, DT, Ichihara, N, Lamontagne, F, Marshall, JC, McAuley, DF, McGlothlin, A, McGuinness, SP, McVerry, BJ, Neal, MD, Nichol, AD, Parke, RL, Parker, JC, Parry-Billings, K, Peters, SEC, Reyes, LF, Rowan, KM, Saito, H, Santos, MS, Saunders, CT, Serpa-Neto, A, Seymour, CW, Shankar-Hari, M, Stronach, LM, Turgeon, AF, Turner, AM, Van de Veerdonk, FL, Zarychanski, R, Green, C, Lewis, RJ, Angus, DC, McArthur, CJ, Berry, S, Derde, LPG, Gordon, AC, Webb, SA, Lawler, PR, Comm REMAP-CAP Investigators, Apollo - University of Cambridge Repository, Intensive Care Medicine, Université de Versailles Saint-Quentin-en-Yvelines - UFR Sciences de la santé Simone Veil (UVSQ Santé), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Hôpital Raymond Poincaré [Garches], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Pittsburgh Foundation, PF, Amgen, Health Research Board, HRB: CTN 2014-012, Horizon 2020 Framework Programme, H2020: 101003589, Translational Breast Cancer Research Consortium, TBCRC, Canadian Institutes of Health Research, IRSC: 158584, Heart and Stroke Foundation of Canada, HSF, National Institute for Health and Care Research, NIHR, European Commission, EC, National Health and Medical Research Council, NHMRC: 1101719, APP194811, CS-2016-16-011, GNT2008447, RP-2015-06-18, Office of Health and Medical Research, OHMR, Health Research Council of New Zealand, HRC: 16/631, Eisai, Ministère des Affaires Sociales et de la Santé: PHRC-20-0147, Université Pierre et Marie Curie, UPMC, NIHR Imperial Biomedical Research Centre, BRC, Minderoo Foundation, Funding/Support : The Platform for European Preparedness Against (Re-) emerging Epidemics (PREPARE) consortium by the European Union, FP7-HEALTH-2013-INNOVATION-1 (#602525), the Rapid European COVID-19 Emergency Research response (RECOVER) consortium by the European Union’s Horizon 2020 research and innovation programme (#101003589), the Australian National Health and Medical Research Council (#APP1101719), the Australian Medical Research Future Fund (#APP2002132), the Health Research Council of New Zealand (#16/631), the Canadian Institutes of Health Research Strategy for Patient-Oriented Research Innovative Clinical Trials Program Grant (#158584) and the Canadian Institute of Health Research COVID-19 Rapid Research Funding (#447335), the UK National Institute for Health Research (NIHR) and the NIHR Imperial Biomedical Research Centre, the Health Research Board of Ireland (CTN 2014-012), the UPMC Learning While Doing Program, the Translational Breast Cancer Research Consortium, the French Ministry of Health (PHRC-20-0147), the Wellcome Trust Innovations Project (215522), the Minderoo Foundation, the EU Programme Emergency Support Instrument, the NHS Blood and Transplant Research and Development Programme, the Translational Breast Cancer Research Consortium, the NSW Office of Health and Medical Research, Amgen, Eisai, and the Pittsburgh Foundation. Dr Higgins is funded by an NHMRC Emerging Leadership Fellowship (GNT2008447). Dr McQuilten is funded by an NHMRC Emerging Leadership Fellowship (APP194811). Dr Gordon is funded by an NIHR Research Professorship (RP-2015-06-18) and Dr Shankar-Hari by an NIHR Clinician Scientist Fellowship (CS-2016-16-011). Dr Turgeon is the Chairholder of the Canada Research Chair in Critical Care Neurology and Trauma. Dr Lawler is supported by a career award from the Heart and Stroke Foundation of Canada., and European Project: 602525,EC:FP7:HEALTH,FP7-HEALTH-2013-INNOVATION-1,PREPARE(2014)

Subjects
Adult, Male, corticosteroid, [SDV]Life Sciences [q-bio], Critical Illness, lnfectious Diseases and Global Health Radboud Institute for Molecular Life Sciences [Radboudumc 4], antiplatelet, Lopinavir, Adaptive platform trial randomized controlled trial intensive care, pneumonia COVID-19 antiplatelet immunoglobulin antiviral corticosteroid immune modulation anticoagulation, All institutes and research themes of the Radboud University Medical Center, Adrenal Cortex Hormones, Humans, anticoagulation, intensive care, pneumonia, COVID-19 Serotherapy, Original Investigation, Medicine(all), immune modulation, Ritonavir, SARS-CoV-2, COVID-19, Anticoagulants, Bayes Theorem, General Medicine, Middle Aged, antiviral, Receptors, Interleukin-6, Adaptive platform trial, randomized controlled trial, Female, Human medicine, immunoglobulin, Follow-Up Studies, Hydroxychloroquine
Abstract

ImportanceThe longer-term effects of therapies for the treatment of critically ill patients with COVID-19 are unknown.ObjectiveTo determine the effect of multiple interventions for critically ill adults with COVID-19 on longer-term outcomes.Design, Setting, and ParticipantsPrespecified secondary analysis of an ongoing adaptive platform trial (REMAP-CAP) testing interventions within multiple therapeutic domains in which 4869 critically ill adult patients with COVID-19 were enrolled between March 9, 2020, and June 22, 2021, from 197 sites in 14 countries. The final 180-day follow-up was completed on March 2, 2022.InterventionsPatients were randomized to receive 1 or more interventions within 6 treatment domains: immune modulators (n = 2274), convalescent plasma (n = 2011), antiplatelet therapy (n = 1557), anticoagulation (n = 1033), antivirals (n = 726), and corticosteroids (n = 401).Main Outcomes and MeasuresThe main outcome was survival through day 180, analyzed using a bayesian piecewise exponential model. A hazard ratio (HR) less than 1 represented improved survival (superiority), while an HR greater than 1 represented worsened survival (harm); futility was represented by a relative improvement less than 20% in outcome, shown by an HR greater than 0.83.ResultsAmong 4869 randomized patients (mean age, 59.3 years; 1537 [32.1%] women), 4107 (84.3%) had known vital status and 2590 (63.1%) were alive at day 180. IL-6 receptor antagonists had a greater than 99.9% probability of improving 6-month survival (adjusted HR, 0.74 [95% credible interval {CrI}, 0.61-0.90]) and antiplatelet agents had a 95% probability of improving 6-month survival (adjusted HR, 0.85 [95% CrI, 0.71-1.03]) compared with the control, while the probability of trial-defined statistical futility (HR >0.83) was high for therapeutic anticoagulation (99.9%; HR, 1.13 [95% CrI, 0.93-1.42]), convalescent plasma (99.2%; HR, 0.99 [95% CrI, 0.86-1.14]), and lopinavir-ritonavir (96.6%; HR, 1.06 [95% CrI, 0.82-1.38]) and the probabilities of harm from hydroxychloroquine (96.9%; HR, 1.51 [95% CrI, 0.98-2.29]) and the combination of lopinavir-ritonavir and hydroxychloroquine (96.8%; HR, 1.61 [95% CrI, 0.97-2.67]) were high. The corticosteroid domain was stopped early prior to reaching a predefined statistical trigger; there was a 57.1% to 61.6% probability of improving 6-month survival across varying hydrocortisone dosing strategies.Conclusions and RelevanceAmong critically ill patients with COVID-19 randomized to receive 1 or more therapeutic interventions, treatment with an IL-6 receptor antagonist had a greater than 99.9% probability of improved 180-day mortality compared with patients randomized to the control, and treatment with an antiplatelet had a 95.0% probability of improved 180-day mortality compared with patients randomized to the control. Overall, when considered with previously reported short-term results, the findings indicate that initial in-hospital treatment effects were consistent for most therapies through 6 months.

Published
2023

21. Thermochemical Modelling of Fluid-Rock Reactions in Vera Rubin Ridge, Galecrater, Mars

Author

Turner, S. M. R, Schwenzer, S. P, Bridges, J. C, Bedford, C. C, Rampe, E. B, Fraeman, A. A, McAdam, A, Mangold, N, and L'Haridon, J

Subjects
Lunar And Planetary Science And Exploration
Abstract

Vera Rubin Ridge (VRR) in Gale Crater, Mars, is a ~200 m wide ~6.5 km long northeast- southwest resistant geomorphological feature on the northern slopes of Aeolis Mons (Mt. Sharp). Analysis of Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) orbital data showed that VRR has strong hematite spectral signatures. Hematite was confirmed in-situ at VRR with the Curiosity rover and has been shown to be present throughout the Mur- ray formation. VRR is stratigraphically continu-ous with the underlying Murray formation. Previous thermochemical modelling showed how hematite at VRR could have formed as the result of open-system weathering at high water/rock ratios. Here we use thermochemical modelling to investigate possible reaction pathways for the hematite-clay- bearing assemblage observed at VRR, starting from an identified least-altered (minimum clay content) Murray composition, and a Mars basal brine.

Published
2019

22. Using Chemcam Derived Geochemistry to Identify the Paleonet Sediment Transport Direction and Source Region Characteristics of the Stimson Formation in Gale Crater, Mars

Author

Bedford, C. C, Schwenzer, S. P, Bridges, J. C, Banham, S, Wiens, R. C, Frydenvang, J, Gasnault, O, Rampe, E. B, and Gasda, P. J

Subjects
Space Sciences (General)
Abstract

The NASA Curiosity rover has encountered both ancient and modern dune deposits within Gale crater. The modern dunes are actively migrating across the surface within the Bagnold Dune field of which Curiosity conducted analysis campaigns at two different localities. Variations in mafic-felsic mineral abundances between these two sites have been related to the aeolian mineral sorting regime for basaltic environments identified on the Earth which become preferentially enriched in olivine relative to plagioclase feldspar with increasing distance from the source. This aeolian mineral sorting regime for basaltic minerals has also been inferred for Mars from orbital data. The aim of this study is to investigate whether this aeolian mafic-felsic mineral sorting trend has left a geochemical signature in the ancient dune deposits preserved within the Stimson formation. The Stimson formation unconformably overlies the Murray formation and consists of thickly laminated, cross-bedded sandstone. Stimson outcrops have a variable thickness up to 5 meters covering a total area of 17 square kilometers. A dry, aeolian origin was determined for this sandstone due to the high sphericity and roundness of the grains, uniform bimodal grain size distribution (250-710 microns), and 1-meter-thick cross-beds. Identifying the geochemical signature of mineral sorting can provide insights about the paleo-net sediment transport direction of the dunes and prevailing wind direction at the time of deposition.

Published
2019

23. Geochemical Endmembers Preserved in Gale Crater: A Tale of Two Mudstones and Their Compositional Differences According to Chemcam

Author

Bedford, C. C, Schwenzer, S. P, Bridges, J. C, Wiens, R. C, Rampe, E. B, Frydenvang, J, and Gasda, P. J

Subjects
Geophysics
Abstract

Gale crater contains two fine-grained mudstone sedimentary units: The Sheepbed mudstone member, and the Murray formation mud-stones. These mudstones formed as part of an ancient fluviolacustrine system. The NASA Curiosity rover has analysed these mudstone units using the Chemistry and Camera (ChemCam), Alpha Particle X-ray Spectrometer (APXS) and Chemistry and Mineralogy (CheMin) onboard instrument suites. Subsequent mineralogical analyses have uncovered a wide geochemical and mineralogical diversity across and within these two mudstone formations. This study aims to determine the principal cause (alteration or source region) of this geochemical variation through a statistical analysis of the ChemCam dataset up to sol 1482, including the lower to middle Murray formation.

Published
2018

24. Evidence of multiple fluid events in elevated-mn chemcam targets in the brad-bury rise, gale crater, mars

Author

Comellas, J, Essunfeld, A, Morris, R, Lanza, N, Gasda, P, Delapp, D, Wiens, R, Gasnault, Olivier, Clegg, S, Bedford, C, Dehouck, E, Clark, B, Anderson, R, Fisher, W, Lueth, V, University of Hawai‘i [Mānoa] (UHM), Los Alamos National Laboratory (LANL), Institut de recherche en astrophysique et planétologie (IRAP), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Universities Space Research Association (USRA), NASA, United States Geological Survey (USGS), California Institute of Technology (CALTECH), New Mexico Institute of Mining and Technology [New Mexico Tech] (NMT), and Lunar and Planetary Institute

Subjects
[SDU.STU.PL]Sciences of the Universe [physics]/Earth Sciences/Planetology
Abstract

International audience

Published
2022

25. Grouping chemcam targets by visual characteristics improved by automatic partitioning

Author

Essunfeld, A, Comellas, J, Gasda, P, Oyen, D, Lanza, N, Gasnault, Olivier, Delapp, D, Wiens, R, Clegg, S, Bedford, C, Dehouck, E, Clark, B, Anderson, R, Los Alamos National Laboratory (LANL), University of Hawai‘i [Mānoa] (UHM), Institut de recherche en astrophysique et planétologie (IRAP), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Lunar and Planetary Institute [Houston] (LPI), NASA, United States Geological Survey (USGS), and Lunar and Planetary Institute

Subjects
[SDU.STU.PL]Sciences of the Universe [physics]/Earth Sciences/Planetology
Abstract

International audience

Published
2022

28. Constraining Alteration Processes Along the Siccar Point Group Unconformity, Gale Crater, Mars: Results From the Sample Analysis at Mars Instrument.

Author

Sutter, B., McAdam, A. C., Wong, G. M., Clark, J. V., Archer, P. D., Franz, H. B., Gasda, P. J., Ming, D. W., Yen, A., Lewis, J. M. T., Schwenzer, S. P., Turner, S. M. R., Rampe, E. B., Eigenbrode, J. L., Stern, J. C., Thompson, L. M., Dehouck, E., Bedford, C., Banham, S., and Bryk, A. B.

Subjects
GALE Crater (Mars), POINT set theory, MARS (Planet), MARS rovers, SULFUR compounds, IRON sulfides, LUNAR craters, PARAGENESIS
Abstract

Results from the Sample Analysis at Mars‐evolved gas analyzer on board the Mars Science Laboratory Curiosity rover constrained the alteration history and habitability potential of rocks sampled across the Siccar Point unconformity in Gale crater. The Glasgow member (Gm) mudstone just below the unconformity had evidence of acid sulfate or Si‐poor brine alteration of Fe‐smectite to Fe amorphous phases, leaching loss of Fe‐Mg‐sulfate and exchange of unfractionated sulfur 34S (δ34S = 2‰ ± 7‰) with enriched 34S (20‰ ± 5‰, Vienna Cañon Diablo Troilite). Carbon abundances did not significantly change (322–661 μgC/g) consistent with carbon stabilization by amorphous Al‐ and Fe‐hydroxide phases. The Gm mudstone had no detectable oxychlorine and extremely low nitrate. Nitrate (0.06 wt.% NO3), oxychlorine (0.13 wt.% ClO4), high C (1,472 μg C/g), and low Fe/Mg‐sulfate concentration (0.24 wt.% SO3) depleted in 34S (δ34S = −27‰ ± 7), were detected in the Stimson formation (Sf) eolian sandstone above the unconformity. Redox disequilibrium through the detections of iron sulfide and sulfate supported limited aqueous processes in the Sf sandstone. Si‐poor brines or acidic fluids altered the Gm mudstone just below the unconformity but did not alter underlying Gm mudstones further from the contact. Chemical differences between the Sf and Gm rocks suggested that fluid interaction was minimal between the Sf and Gm rocks. These results suggested that the Gm rocks were altered by subsurface fluids after the Sf placement. Aqueous processes along the unconformity could have provided habitable conditions and in some cases, C and N levels could have supported heterotrophic microbial populations. Plain Language Summary: The Curiosity Rover investigated the chemistry and mineralogy of rocks in the Glen Torridon region of Gale crater, Mars. Rocks sampled across an unconformity (representative of a time gap between when two sedimentary rocks were deposited) gave insight into how they were altered over time. The Glasgow mudstones, below the unconformity, were formed in a lake environment while the younger Stimson sandstones above the unconformity were formed from ancient sand dunes. Using the Sample Analysis at Mars Evolved Gas Analysis (SAM‐EGA) experiment, solid powdered samples from these rocks were heated and released gases (e.g., water, carbon dioxide, and sulfur dioxide) were tracked. These gases revealed a complex history of alteration through the rocks. The Glasgow mudstones were characterized by acidic or Si‐poor brine alteration, variable sulfur, low amounts of carbon, and no nitrate or oxychlorine. SAM‐EGA results from the Stimson sandstone showed rocks that were less altered, had higher levels of carbon, different sulfur compounds and sources, and some nitrate/oxychlorine. Together, these results suggested that the Glasgow rocks were altered by subsurface fluids after Stimson sandstone placement. Aqueous processes along the unconformity could have provided habitable conditions and in some cases, C and N levels could have supported heterotrophic microbial populations. Key Points: Subsurface silica‐poor brines or acidic fluids altered mudstones just below the Siccar Point group unconformityStimson formation sandstone above the unconformity was exposed to limited aqueous alterationAqueous alteration processes along the unconformity could have provided habitable conditions and in some cases, sufficient microbial C and N [ABSTRACT FROM AUTHOR]

Published
2022
Full Text
View/download PDF

35. Feldspathic Cumulate Samples and Plutonic Rocks in Gale Crater: Comparisons to Martian Meteorites

Author

Bridges, J. C., Cousin, A., Sautter, V., William Rapin, Bowden, D., Thompson, L., Schwenzer, S. P., Bedford, C., Payre, V., Gasnault, O., Forni, O., Pinet, P., Wiens, R., Yingst, R. A., Institut de recherche en astrophysique et planétologie (IRAP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), and Los Alamos National Laboratory (LANL)

Subjects
[SDU.STU.PL]Sciences of the Universe [physics]/Earth Sciences/Planetology
Abstract

The Curiosity Rover of Mars Science Laboratory has identified igneous float rocks in Gale Crater which offer new insights about the differentiation of the martian lithosphere. Here we describe likely origins for some unique Gale plutonic and cumulate rocks and compare to the martian meteorites. At the Ireson Hill locality around sol 1606 a group of float rocks with resistant, dreikanter morphologies were identified which include igneous textures, notably the 10 cm Pogy sample. On sol 2016 of the MSL mission, a group of float rocks were studied in detail, including Askival, which is a light toned rock igneous rock similar to Peacock_Hills (sol 19) and Bindi (sol 544).

Published
2019

36. Using ChemCam-Derived Geochemistry to Identify the Paleonet Sediment Transport Direction and Source Region Characteristics of the Stimson Formation in Gale Crater, Mars

Author

Bedford, C. C., Schwenzer, S. P., Bridges, J. C., Banham, S., Wiens, R. C., Frydenvang, J., Gasnault, O., Rampe, E. B., Gasda, P. J., Los Alamos National Laboratory (LANL), Institut de recherche en astrophysique et planétologie (IRAP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), and Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDU.STU.PL]Sciences of the Universe [physics]/Earth Sciences/Planetology
Abstract

International audience; We have identified the geochemical signature of mineral sorting in Gale's ancient dune deposits and used this to estimate the net sediment transport direction.

Published
2019

38. Early diagenesis at and below Vera Rubin ridge, Gale crater, Mars.

Author

Turner, S. M. R., Schwenzer, S. P., Bridges, J. C., Rampe, E. B., Bedford, C. C., Achilles, C. N., McAdam, A. C., Mangold, N., Hicks, L. J., Parnell, J., Fraeman, A. A., Reed, M. H., and Osinski, Gordon

Subjects
GALE Crater (Mars), DIAGENESIS, ALPHA rays, MARS (Planet), GROUNDWATER flow, HEMATITE
Abstract

Data returned by NASA's Mars Science Laboratory Curiosity rover showed evidence for abundant secondary materials, including Fe‐oxides, phyllosilicates, and an amorphous component on and below Vera Rubin ridge in the Murray formation. We used equilibrium thermochemical modeling to test the hypothesis that altered sediments were deposited as detrital igneous grains and subsequently underwent diagenesis. Chemical compositions of the Murray formations' altered components were calculated using data returned by the chemistry and mineralogy X‐ray diffraction instrument and the alpha particle X‐ray spectrometer on board Curiosity. Reaction of these alteration compositions with a CO2‐poor and oxidizing dilute aqueous solution was modeled at 25–100 °C, with 10–50% Fe3+/Fetot of the host rock. The modeled alteration assemblages included abundant phyllosilicates and Fe‐oxides at water‐to‐rock ratios >100. Modeled alteration abundances were directly comparable to observed abundances of hematite and clay minerals at a water‐to‐rock ratio of 10,000, for system temperatures of 50–100 °C with fluid pH ranging from 7.9 to 9.3. Modeling results suggest that the hematite–clay mineral assemblage is primarily the result of enhanced groundwater flow compared to the Sheepbed mudstone observed at Yellowknife Bay, and underwent further, localized alteration to produce the mineralogy observed by Curiosity. [ABSTRACT FROM AUTHOR]

Published
2021
Full Text
View/download PDF

48. The Chemostratigraphy of the Murray Formation and Role of Diagenesis at Vera Rubin Ridge in Gale Crater, Mars, as Observed by the ChemCam Instrument.

Author

Frydenvang, J., Mangold, N., Wiens, R. C., Fraeman, A. A., Edgar, L. A., Fedo, C. M., L'Haridon, J., Bedford, C. C., Gupta, S., Grotzinger, J. P., Bridges, J. C., Clark, B. C., Rampe, E. B., Gasnault, O., Maurice, S., Gasda, P. J., Lanza, N. L., Olilla, A. M., Meslin, P.‐Y., and Payré, V.

Subjects
MARTIAN craters, CHEMOSTRATIGRAPHY, DIAGENESIS, HEMATITE, CLAY minerals, MARTIAN exploration, MORPHOLOGY
Abstract

Geochemical results are presented from Curiosity's exploration of Vera Rubin ridge (VRR), in addition to the full chemostratigraphy of the predominantly lacustrine mudstone Murray formation up to and including VRR. VRR is a prominent ridge flanking Aeolis Mons (informally Mt. Sharp), the central mound in Gale crater, Mars, and was a key area of interest for the Mars Science Laboratory mission. ChemCam data show that VRR is overall geochemically similar to lower‐lying members of the Murray formation, even though the top of VRR shows a strong hematite spectral signature as observed from orbit. Although overall geochemically similar, VRR is characterized by a prominent decrease in Li abundance and Chemical Index of Alteration across the ridge. This decrease follows the morphology of the ridge rather than elevation and is inferred to reflect a nondepositionally controlled decrease in clay mineral abundance in VRR rocks. Additionally, a notable enrichment in Mn above baseline levels is observed on VRR. While not supporting a single model, the results suggest that VRR rocks were likely affected by multiple episodes of postdepositional groundwater interactions that made them more erosionally resistant than surrounding Murray rocks, thus resulting in the modern‐day ridge after subsequent erosion. Plain Language Summary: Results from the ChemCam instrument on Vera Rubin ridge (VRR) in Gale crater, Mars, are presented and compared with observations from similar rocks leading up to the ridge. VRR is a prominent ridge, flanking the central mound, Aeolis Mons, in Gale crater, Mars. The ridge attracted early attention because it displays strong iron‐oxide spectral signatures. Surprisingly, ChemCam data show that VRR rocks do not show an overall increase in iron abundance relative to the comparable bedrock analyzed for almost 300 m in elevation leading up to the ridge. While similar overall, some notable variations were observed on VRR relative to lower‐lying rocks. In particular, geochemical variations suggest a strong decrease in clay content on the ridge, above which, a notable enrichment in Mn is observed. No single geological process confidently explains all observations on the ridge. Rather, we think that VRR rocks underwent a series of interactions with groundwater that caused the rocks of VRR to become more resistant to erosion than their surroundings, thus emerging as a ridge as the rocks around them eroded. This likely implies that groundwater persisted in Gale crater even long after the disappearance of the ancient lake. Key Points: A decrease in Li and Chemical Index of Alteration, reflecting clay mineral content, is observed across Vera Rubin ridge (VRR)A Mn‐rich interval is observed stratigraphically above the decrease in clay mineral content on VRRVRR likely resulted from increased induration from late‐stage fluid interactions long after the lake environment in Gale crater ceased [ABSTRACT FROM AUTHOR]

Published
2020
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results