Search Results - "Ehresmann, B."

Measurements of Energetic Particle Radiation in Transit to Mars on the Mars Science Laboratory by Zeitlin, C., Hassler, D. M., Cucinotta, F. A., Ehresmann, B., Wimmer-Schweingruber, R. F., Brinza, D. E., Kang, S., Weigle, G., Böttcher, S., Böhm, E., Burmeister, S., Guo, J., Köhler, J., Martin, C., Posner, A., Rafkin, S., Reitz, G.

“…The Mars Science Laboratory spacecraft, containing the Curiosity rover, was launched to Mars on 26 November 2011, and for most of the 253-day,…”
Get full text

The Radiation Assessment Detector (RAD) Investigation by Hassler, D. M., Zeitlin, C., Wimmer-Schweingruber, R. F., Böttcher, S., Martin, C., Andrews, J., Böhm, E., Brinza, D. E., Bullock, M. A., Burmeister, S., Ehresmann, B., Epperly, M., Grinspoon, D., Köhler, J., Kortmann, O., Neal, K., Peterson, J., Posner, A., Rafkin, S., Seimetz, L., Smith, K. D., Tyler, Y., Weigle, G., Reitz, G., Cucinotta, F. A.

“…The Radiation Assessment Detector (RAD) on the Mars Science Laboratory (MSL) is an energetic particle detector designed to measure a broad spectrum of…”
Get full text

Energetic Particle Radiation Environment Observed by RAD on the Surface of Mars During the September 2017 Event by Ehresmann, B., Hassler, D. M., Zeitlin, C., Guo, J., Wimmer‐Schweingruber, R. F., Matthiä, D., Lohf, H., Burmeister, S., Rafkin, S. C. R., Berger, T., Reitz, G.

“…The 10–12 September Solar Energetic Particle event produced the strongest increase of the radiation environment measured by the Radiation Assessment Detector…”
Get full text

Analysis of the Radiation Hazard Observed by RAD on the Surface of Mars During the September 2017 Solar Particle Event by Zeitlin, C., Hassler, D. M., Guo, J., Ehresmann, B., Wimmer‐Schweingruber, R. F., Rafkin, S. C. R., Freiherr von Forstner, J. L., Lohf, H., Berger, T., Matthiae, D., Reitz, G.

“…We report dosimetric quantities measured by the Mars Science Laboratory Radiation Assessment Detector (RAD) on the surface of Mars during the 10–12 September…”
Get full text

Measurements of the neutron spectrum on the Martian surface with MSL/RAD by Köhler, J., Zeitlin, C., Ehresmann, B., Wimmer-Schweingruber, R. F., Hassler, D. M., Reitz, G., Brinza, D. E., Weigle, G., Appel, J., Böttcher, S., Böhm, E., Burmeister, S., Guo, J., Martin, C., Posner, A., Rafkin, S., Kortmann, O.

“…The Radiation Assessment Detector (RAD), onboard the Mars Science Laboratory (MSL) rover Curiosity, measures the energetic charged and neutral particles and…”
Get full text

Calibration and Characterization of the Radiation Assessment Detector (RAD) on Curiosity by Zeitlin, C., Hassler, D. M., Wimmer-Schweingruber, R. F., Ehresmann, B., Appel, J., Berger, T., Böhm, E., Böttcher, S., Brinza, D. E., Burmeister, S., Guo, J., Köhler, J., Lohf, H., Martin, C., Matthiä, D., Posner, A., Rafkin, S., Reitz, G., Tyler, Y. D., Vincent, M., Weigle, G., Iwata, Y., Kitamura, H., Murakami, T.

“…The Radiation Assessment Detector, RAD, is one of the ten instruments that make up the science payload of the Mars Science Laboratory Curiosity rover. RAD is…”
Get full text

Natural Radiation Shielding on Mars Measured With the MSL/RAD Instrument by Ehresmann, B., Hassler, D. M., Zeitlin, C., Guo, J., Wimmer‐Schweingruber, R. F., Khaksari, S., Loeffler, S.

“…Protecting astronauts from the effects of space radiation remains one major stepping stone for the exploration of Mars. Long‐term exposure to radiation can…”
Get full text

Measurements of radiation quality factor on Mars with the Mars Science Laboratory Radiation Assessment Detector by Zeitlin, C., Hassler, D.M., Ehresmann, B., Rafkin, S.C.R., Guo, J., Wimmer-Schweingruber, R.F., Berger, T., Matthiä, D.

“…We report the first long-term measurements of the radiation quality factor of energetic charged particles on the surface of Mars. The Radiation Assessment…”
Get full text

Influence of higher atmospheric pressure on the Martian radiation environment: Implications for possible habitability in the Noachian epoch by Ehresmann, B., Burmeister, S., Wimmer-Schweingruber, R. F., Reitz, G.

“…The Noachian epoch (∼4.5–3.5 billion years ago) is a promising era for a possible emergence of life on Mars. The presence of runoff channels in areas formed…”
Get full text

Measurements of the neutron spectrum in transit to Mars on the Mars Science Laboratory by Köhler, J., Ehresmann, B., Zeitlin, C., Wimmer-Schweingruber, R.F., Hassler, D.M., Reitz, G., Brinza, D.E., Appel, J., Böttcher, S., Böhm, E., Burmeister, S., Guo, J., Lohf, H., Martin, C., Posner, A., Rafkin, S.

“…The Mars Science Laboratory spacecraft, containing the Curiosity rover, was launched to Mars on 26 November 2011. Although designed for measuring the radiation…”
Get full text

Water equivalent hydrogen estimates from the first 200 sols of Curiosity’s traverse (Bradbury Landing to Yellowknife Bay): Results from the Dynamic Albedo of Neutrons (DAN) passive mode experiment by Tate, C.G., Moersch, J., Jun, I., Ming, D.W., Mitrofanov, I., Litvak, M., Behar, A., Boynton, W.V., Deflores, L., Drake, D., Ehresmann, B., Fedosov, F., Golovin, D., Hardgrove, C., Harshman, K., Hassler, D.M., Kozyrev, A.S., Kuzmin, R., Lisov, D., Malakhov, A., Milliken, R., Mischna, M., Mokrousov, M., Nikiforov, S., Sanin, A.B., Starr, R., Varenikov, A., Vostrukhin, A., Zeitlin, C.

“…•We analyze Mars Science Laboratory Dynamic Albedo of Neutrons passive mode data.•Water equivalent hydrogen content varies along the MSL traverse.•DAN passive…”
Get full text

Crystal structures of coaxially stacked kissing complexes of the HIV-1 RNA dimerization initiation site by Dumas, Philippe, Ennifar, Eric, Walter, Philippe, Ehresmann, Bernard, Ehresmann, Chantal

“…We describe the crystal structures of the RNA dimerization initiation sites (DIS) of HIV-1 subtypes A and B. Both molecules adopt a hairpin conformation, with…”
Get full text

Electron/positron measurements obtained with the Mars Science Laboratory Radiation Assessment Detector on the surface of Mars by Köhler, J., Wimmer-Schweingruber, R. F., Appel, J., Ehresmann, B., Zeitlin, C., Hassler, D. M., Reitz, G., Brinza, D. E., Böttcher, S., Böhm, E., Burmeister, S., Guo, J., Harri, A.-M., Kahanpää, H., Krauss, J., Lohf, H., Martin, C., Matthiä, D., Posner, A., Rafkin, S.

“…The Radiation Assessment Detector (RAD), on board the Mars Science Laboratory (MSL) rover Curiosity, measures the energetic charged and neutral particles and…”
Get full text

Inversion of neutron/gamma spectra from scintillator measurements by Köhler, J., Ehresmann, B., Martin, C., Böhm, E., Kharytonov, A., Kortmann, O., Zeitlin, C., Hassler, D.M., Wimmer-Schweingruber, R.F.

“…The Radiation Assessment Detector (RAD) on-board NASA’s Mars Science Laboratory (MSL) rover will measure charged particles as well as neutron and gamma…”
Get full text

The crystal structure of UUCG tetraloop by Ennifar, E, Nikulin, A, Tishchenko, S, Serganov, A, Nevskaya, N, Garber, M, Ehresmann, B, Ehresmann, C, Nikonov, S, Dumas, P

“…All large structured RNAs contain hairpin motifs made of a stem closed by several looped nucleotides. The most frequent loop motif is the UUCG one. This motif…”
Get full text

Mg2+ dependency of HIV-1 reverse transcription, inhibition by nucleoside analogues and resistance by Goldschmidt, Valérie, Didierjean, Joël, Ehresmann, Bernard, Ehresmann, Chantal, Isel, Catherine, Marquet, Roland

“…Metal ions are essential for DNA polymerase and RNase H activities of HIV-1 reverse transcriptase (RT). RT studies are routinely performed at 6–8 mM Mg2+,…”
Get full text

Detecting Upward Directed Charged Particle Fluxes in the Mars Science Laboratory Radiation Assessment Detector by Appel, J. K., Köehler, J., Guo, J., Ehresmann, B., Zeitlin, C., Matthiä, D., Lohf, H., Wimmer‐Schweingruber, R. F., Hassler, D., Brinza, D. E., Böhm, E., Böttcher, S., Martin, C., Burmeister, S., Reitz, G., Rafkin, S., Posner, A., Peterson, J., Weigle, G.

“…The Mars Science Laboratory rover Curiosity, operating on the surface of Mars, is exposed to radiation fluxes from above and below. Galactic Cosmic Rays travel…”
Get full text

The crystal structure of the dimerization initiation site of genomic HIV-1 RNA reveals an extended duplex with two adenine bulges by Ennifar, E, Yusupov, M, Walter, P, Marquet, R, Ehresmann, B, Ehresmann, C, Dumas, P

“…Background: An important step in retroviral replication is dimerization of the genomic RNA prior to encapsidation. Dimerization is initiated by the formation…”
Get full text

tRNAs as primer of reverse transcriptases by Marquet, R., Isel, C., Ehresmann, C., Ehresmann, B.

“…Genetic elements coding for proteins that present amino acid identity with the conserved motifs of retroviral reverse transcriptases constitute the retroid…”
Get full text

A Loop-Loop ``Kissing" Complex is the Essential Part of the Dimer Linkage of Genomic HIV-1 RNA by Paillart, Jean-Christophe, Skripkin, Eugene, Ehresmann, Bernard, Ehresmann, Chantal, Marquet, Roland

“…RNA-RNA interactions govern a number of biological processes. Several RNAs, including natural sense and antisense RNAs, interact by means of a two-step…”
Get full text