Results 111 to 120 of about 1,344 (291)

A Single-chord Stellar Occultation by the Extreme Trans-Neptunian Object (541132) Leleākūhonua

, 2020
International audienceA stellar occultation by the extreme large-perihelion trans-Neptunian object (541132) Leleākūhonua (also known by the provisional designation of 2015 TG387) was predicted by the Lucky Star project and observed with the Research and ...
Bridges, Terry, Wise, J., Ireland, Olivia, Buie, Marc, Mccrystal, Delsie, Mendoza, Paola, Desmars, Josselin, Kehrli, Matthew, Schar, Ramsey, Rennau, Sherry, Weryk, Robert, Werts, Holly, Fiechter, Naemi, Swanson, Diana, Haley, Sean, Dean, Bryan, Hayman, Jennifer, Sicardy, Bruno, Moore, Erik, Estes, James, Wilde, Elizabeth, Glibbery, Cameron, Kavelaars, Jj, Conway, Ken, Gowe, Bruce, Palmquist, Bruce, Givot, Rima, Strauss, Ryder, Terris, Emma, Leiva, Rodrigo, Macdonald, Matthew, Baker, Robert, Dunham, Mackenzie, Herald, Dave, Keller, John   +34 more
core   +1 more source

Evaluation of ozonesondes, HALOE, SAGE II and III, Odin- OSIRIS and -SMR, and ENVISAT-GOMOS, -SCIAMACHY and -MIPAS ozone profiles in the tropics from SAOZ long duration balloon measurements in 2003 and 2004 [PDF]

Atmospheric Chemistry and Physics, 2007
The performances of satellite and sondes ozone measuring instruments available in the tropics between 10 and 26 km during the southern hemisphere summer in 2003 and 2004, have been investigated by comparison with series of profiles obtained by solar ...
J.-P. Pommereau, F. Borchi
doaj  

Effect of Alkyl Chain Length on the Bandgap, Ferroelectric, and Photoelectric Properties of Lead‐Based Molecular Ferroelectrics

Advanced Science, EarlyView.
This study develops a novel 2D molecular ferroelectric [C6N2H18]PbI4 with polarization enhanced photovoltaics. It systematically investigates the effect of alkylamine spacer cation chain lengths on the band gap, ferroelectric, and photoelectric properties, offering new design strategies.
Ganghua Zhang, Jinrong Wen, Ping Chen, Zhibo Chen, Pingying Tang, Dezeng Li, Jingshan Hou, Yongzheng Fang   +7 more
wiley   +1 more source

Detection of a Stellar Occultation by (87) Sylvia I (Romulus)

, 2013
peer reviewedReport of the successful stellar occultations by the triple minor-planet system (87) Sylvia on Jan. 6.06742 UT of the star HD 244394 (mag 10.8).
Preston, S., Berthier, J., Descamps, P., Klotz, A., Suarez, O., Vachier, F., Dubreuil, P., Lecacheux, J., Devogele, Maxime, Frappa, E., Bendjoya, P., Tanga, P.   +11 more
core  

Stellar occultation measurements of molecular oxygen in the lower thermosphere

, 1973
Stellar ultraviolet light near 1500 A is attenuated in the Earth's upper atmosphere due to strong absorption in the Schumann-Runge continuum of molecular oxygen.
Roble, Raymond Gerald, Hays, Paul B. (Paul Byron)   +1 more
core   +1 more source

Probabilistic Estimation of Asteroid Sizes from Single-chord Stellar Occultations

The Astronomical Journal
Stellar occultations provide a powerful technique for determining the size and shape of small bodies in the solar system. This work aims to develop and validate a probabilistic methodology capable of estimating the radius of an occulting body based on ...
B. E. Morgado, N. C. Fonseca, A. R. Gomes-Júnior, L. M. Catani, C. L. Pereira   +4 more
doaj   +1 more source

Mitochondria and Neuromast Tagging With Fluorescent Gallium‐Triapine Analogues: In Cellulo MP FLIM and Zebrafish Live Imaging

Advanced Science, EarlyView.
Fluorescent BODIPY‐conjugated thiosemicarbazone ligands and their Ga(III), In(III), and Fe(III) complexes, inspired by Triapine, are developed as theranostic agents. Multiphoton FLIM and confocal microscopy in cancer cells and zebrafish reveal real‐time uptake, mitochondrial localisation, and whilst spectroscopic assays indicated preserved complex ...
Megan J. Green, Michael W. Jones, Merissa Saleem, Haobo Ge, Melita Tvardauskaite, Julia Dudzic, Fernando Cortezon‐Tamarit, Rory L. Arrowsmith, Charareh Pourzand, Gabriele Kociock‐Kohn, Nicholas H. Rees, Jonathan R. Dilworth, Stephen Faulkner, Stanley W. Botchway, David Gurevich, Sofia I. Pascu   +15 more
wiley   +1 more source

Charon's size and an upper limit on its atmosphere from a stellar occultation

, 2006
Pluto and its satellite, Charon (discovered in 1978; ref. 1), appear to form a double planet, rather than a hierarchical planet/satellite couple. Charon is about half Pluto's size and about one-eighth its mass.
Le Campion, J.-F., Lacombe, F., Sicardy, B., Renner, S., Bellucci, A., Lacour, S., Roques, F., Lecacheux, J., Lellouch, E., 35 Coauthors, And, Gendron, E., Pau, S.   +11 more
core   +1 more source

Stress History Establishes a Transient Tolerant State That Shapes Antibiotic Survival Upon Resuscitation

Advanced Science, EarlyView.
High‐throughput single‐cell analysis of resuscitating bacteria reveals a starvation‐history‐dependent transiently tolerant subpopulation that survives β$\beta$‐lactam exposure by temporarily reducing growth. Distinct from classical persisters, these actively growing yet dynamically modulated cells dominate survival across clinically relevant antibiotic
Kieran Abbott, Georgeos Hardo, Ruizhe Li, Jack Bradley, Ashraf Zarkan, Somenath Bakshi   +5 more
wiley   +1 more source

Selective Inhibition of Integrin β3 Topology Provides a Safer Antithrombotic Strategy

Advanced Science, EarlyView.
Current integrin αIIbβ3 inhibitors effectively reduce thrombosis but also increase bleeding risk. During thrombosis, high shear blood flow can directly activate the integrin αIIbβ3 via a distinct topological change in the β3 transmembrane domain, independent of hemostatic platelet signaling.
Joonha Lee, Chul‐Gyun Lim, Pothiappan Vairaprakash, Jong‐Min Kim, Jiyoon Kim, Ji‐Young Park, Klaus M. Hahn, Hyunbo Shim, Hae Woong Choi, Tobias S. Ulmer, Soon Jun Hong, Chungho Kim   +11 more
wiley   +1 more source