|
|
Priyashkumar Mistry, Kamlesh Pathak, Aniket Prasad, Georgios Lekkas, Surendra Bhattarai, Sarvesh Gharat, Mousam Maity, Dhruv Kumar, Karen A. Collins, Richard P. Schwarz, Christopher R. Mann, Elise Furlan, Steve B. Howell, David Ciardi, Allyson Bieryla, Elisabeth C. Matthews, Erica Gonzales, Carl Ziegler, Ian Crossfield, Steven Giacalone, Thiam-Guan Tan, Phil Evans, Krzysztof G. Hełminiak, Kevin I. Collins, Norio Narita, Akihiko Fukui, Francisco J. Pozuelos, Courtney Dressing, Abderahmane Soubkiou, Zouhair Benkhaldoun, Joshua E. Schlieder, Olga Suarez, Khalid Barkaoui, Enric Palle, Felipe Murgas, Gregor Srdoc, Maria V. Goliguzova, Ivan A. Strakhov, Crystal Gnilka, Kathryn Lester, Colin Littlefield, Nic Scott, Rachel Matson, Michaël Gillon, Emmanuel Jehin, Mathilde Timmermans, Mourad Ghachoui, Lyu Abe, Philippe Bendjoya, Tristan Guillot, Amaury H. M. J. Triaud. (2023). VaTEST. II. Statistical Validation of 11 TESS-detected Exoplanets Orbiting K-type Stars (Vol. 166).
Abstract: NASA’s Transiting Exoplanet Survey Satellite (TESS) is an all-sky survey mission designed to find transiting exoplanets orbiting nearby bright stars. It has identified more than 329 transiting exoplanets, and almost 6000 candidates remain unvalidated. In this manuscript, we discuss the findings from the ongoing Validation of Transiting Exoplanets using Statistical Tools (VaTEST) project, which aims to validate new exoplanets for further characterization. We validated 11 new exoplanets by examining the light curves of 24 candidates using the LATTE and TESS-Plot tools and computing the false-positive probabilities using the statistical validation tool TRICERATOPS. These include planets suitable for atmospheric characterization using transmission spectroscopy (TOI-2194b), emission spectroscopy (TOI-3082b and TOI-5704b) and for both transmission and emission spectroscopy (TOI-672b, TOI-1694b, and TOI-2443b). Our validated planets have one super-Earth (TOI-2194b) orbiting a bright (V = 8.42 mag), metal-poor ([Fe/H] = −0.3720 ± 0.1) star, and one short-period Neptune-like planet (TOI-5704) in the hot-Neptune desert. In total, we validated one super-Earth, seven sub-Neptunes, one Neptune-like, and two sub-Saturn or super-Neptune-like exoplanets. Additionally, we identify five likely planet candidates (TOI-323, TOI-1180, TOI-2200, TOI-2408, and TOI-3913), which can be further studied to establish their planetary nature.
Programme: 1066
|
|
|
|
Biagini Philippe, Thèves Catherine, Balaresque Patricia, Géraut Annie, Cannet Catherine, Keyser Christine, Nikolaeva Dariya, Gérard Patrice, Duchesne Sylvie, Orlando Ludovic, Willerslev Eske, Alekseev Anatoly N, de Micco Philippe, Ludes Bertrand, Crubézy Eric, . (2012). Variola Virus in a 300-Year-Old Siberian Mummy
. NEW ENGLAND JOURNAL OF MEDICINE, 367(21), 2057–2059.
Abstract: To the Editor: Smallpox, which is caused by the variola virus of the Poxviridae family and the orthopoxvirus genus, is among the most devastating human diseases. It may have originated and spread from Egypt, the Near East, or the Indus Valley 3000 to 4000 years ago, and historical reports indicate epidemics in China as early as the first century A.D. and in Europe during the 6th century. By the mid-18th century, smallpox was a worldwide endemic disease. It was eradicated after vaccination campaigns began more than 200 years ago.1 Variola DNA is about 186 kbp, with genes distributed across conserved . . .
Programme: 1038
|
|
|
|
Vitale Vito, Petkov Boyan, Goutail Florence, Lanconelli Christian, Lupi Angelo, Mazzola Mauro, Busetto Maurizio, Pazmino Andrea, Schioppo Riccardo, Genoni Laura, Tomasi Claudio, . (2011). Variations of UV Irradiance at Antarctic Station Concordia During the Springs of 2008 and 2009
. Antarctic Science, 23(04), 389–398.
Abstract: The features of solar UV irradiance measured at the Italian-French Antarctic Plateau station, Concordia, during the springs of 2008 and 2009 are presented and discussed. In order to study the impact of the large springtime variations in total ozone column on the fraction of ultraviolet B (UV-B) irradiance (from c. 290315 nm) reaching the Earth surface, irradiance datasets corresponding to fixed solar zenith angles (SZAs = 65°, 75° and 85°) are correlated to the daily ozone column provided by different instruments. For these SZAs the radiation amplification factor varied from 1.581.94 at 306 nm and from 0.680.88 at 314 nm. The ultraviolet index reached a maximum level of 8 in the summer, corresponding to the typical average summer value for mid latitude sites. The solar irradiance pertaining to the ultraviolet A (UV-A, 315400 nm) spectral band was found to depend closely on variations of atmospheric transmittance characteristics as reported by previous studies. Model simulations of UV-B irradiance showed a good agreement with field measurements at 65° and 75° SZAs. For SZA = 85° the ozone vertical distribution significantly impacted model estimations. Sensitivity analysis performed by hypothetically varying the ozone distribution revealed some features of the ozone profiles that occurred in the period studied here.
Keywords: ozone depletion, radiation amplification factor, solar UV irradiance, UV index, UV models,
Programme: 209
|
|
|
|
Bastien Labarrere, Andreas Prinzing, Thomas Dorey, Emeline Chesneau, Françoise Hennion. (2019). Variations of Secondary Metabolites among Natural Populations of Sub-Antarctic Ranunculus Species Suggest Functional Redundancy and Versatility (Vol. 8). Bachelor's thesis, , .
Abstract: Plants produce a high diversity of metabolites which help them sustain environmental stresses and are involved in local adaptation. However, shaped by both the genome and the environment, the patterns of variation of the metabolome in nature are difficult to decipher. Few studies have explored the relative parts of geographical region versus environment or phenotype in metabolomic variability within species and none have discussed a possible effect of the region on the correlations between metabolites and environments or phenotypes. In three sub-Antarctic Ranunculus species, we examined the role of region in metabolite differences and in the relationship between individual compounds and environmental conditions or phenotypic traits. Populations of three Ranunculus species were sampled across similar environmental gradients in two distinct geographical regions in îles Kerguelen. Two metabolite classes were studied, amines (quantified by high-performance liquid chromatography and fluorescence spectrophotometry) and flavonols (quantified by ultra-high-performance liquid chromatography with triple quadrupole mass spectrometry). Depending on regions, the same environment or the same trait may be related to different metabolites, suggesting metabolite redundancy within species. In several cases, a given metabolite showed different or even opposite relations with the same environmental condition or the same trait across the two regions, suggesting metabolite versatility within species. Our results suggest that metabolites may be functionally redundant and versatile within species, both in their response to environments and in their relation with the phenotype. These findings open new perspectives for understanding evolutionary responses of plants to environmental changes.
Keywords: Ranunculus biternatus Ranunculus moseleyi Ranunculus pseudotrullifolius amines environment natural populations quercetins redundancy secondary metabolite variation sub-Antarctic plants
Programme: 136,1116
|
|
|
|
Beaucournu J.C., Chastel O. (1992). Variations morphologiques chez Notiopsylla kerguelensis (Taschenberg, 1880) (Siphonaptera, Pygiopsyllidae). Bulletin de la societe francaise de parasitologie, 10(2), 265–268.
|
|
|
|
Milan S.E., Lester M., Cowley S.W.H., Oksavik K., Brittnacher M. & Greenwald R.A. (2003). Variations in polar cap area during two substorm cycles. Annales geophysicae, 21, 1121–1140.
|
|
|
|
Morin S., Yan N., Frey M. M., Bekki S., Martins J., Bottenheim J., Savarino J. (2008). Variations in NOx processing revealed by nitrate oxygen isotopes.
|
|
|
|
Biuw M., Boehme L., Guinet C., Hindell M., Costa D., Charrassin J.B., Roquet F., Bailleul F., Meredith M., Thorpe S, Tremblay Y, McDonald B., Park Y.-H., Rintoul S., Bindoff N., Goebel M., Crocker D., Lovell P., Nicholson J., Monks F., Fedak M. (2007). Variations in behaviour and condition of a Southern Ocean top predator in relation to in-situ oceanographic conditions. Proc. Natl. Acad. Sci. U.S.A., 104, 13705–13710.
|
|
|
|
Blunier T., Chapellaz J., Schwander J., Stauffer B. & Raynaud D. (1995). Variations in atmospheric methane concentrations during the Holocene epoch. Nature, 374, 46–49.
|
|
|
|
GRISELIN M, BERNARD E., LAFFLY D., TOLLE F., MARLIN Ch. et FRIEDT J-M. (2007). Variations en surface et en volume du glacier Loven Est (79°N, Spitsberg) en relation avec les changements climatiques contemporains, Journées Nivologie-glaciologie de la Société Hydrotechnique de France, Grenoble, 31 mars-1er avril 2010..
Abstract: Journées Nivologie-glaciologie de la Société Hydrotechnique de France, Grenoble, 31 mars-1er avril 2010.
Programme: 304
|
|
