Results 81 to 90 of about 3,737,177 (309)

Thermally Driven Atmospheric Escape: Transition from Diffusion-limited to Drag-off Escape

The Planetary Science Journal
We examine the transition from diffusion-limited to drag-off escape using a direct simulation Monte Carlo (DSMC) model developed to simulate planetary atmospheres, referred to as Harrah.
Jack C. Evans, Shane Robert Carberry Mogan, Robert E. Johnson, Orenthal J. Tucker   +3 more
doaj   +1 more source

Characterizing exoplanets atmospheres with space photometry at optical wavelengths

EPJ Web of Conferences, 2015
Space photometry such as performed by Kepler and CoRoT provides exoplanets radius and phase curves with an exquisite precision. The phase curve constrains the longitudinal variation of the albedo and shed light on the horizontal distribution of clouds ...
Parmentier Vivien, Guillot Tristan, Showman Adam P., Fortney Jonathan, Marley Mark   +4 more
doaj   +1 more source

Effect of terahertz irradiation on DNA damage repair in living cells

FEBS Open Bio, EarlyView.
We investigated the effect of terahertz (THz) wave irradiation on DNA double‐strand break (DSB) repair in living cells. We found that THz irradiation enhanced DSB repair at specific frequencies, whereas heat treatment inhibited it, indicating that this effect is nonthermal and frequency‐specific.
Yuya Ueno, Shota Yamazaki, Hiromichi Hoshina, Masahiko Harata   +3 more
wiley   +1 more source

Importin 7 mediates the nuclear import of HIV‐1 integrase via a specific interacting interface

FEBS Open Bio, EarlyView.
HIV‐1 integrase enables viral DNA integration into the host genome. By binding to the core domain of the host protein Importin 7 via its C‐terminal domain, the integrase is transported across the nuclear membrane into the nucleus, where integration of the viral genome into host DNA takes place. This translocation is a critical step for subsequent viral
Juana Bana, Avigail Yariv, Tal Oppenheim, Hadar Amartely, Dana Reichmann, Oded Livnah   +5 more
wiley   +1 more source

Oxygen Isotope Fractionation in the Martian Atmosphere Induced by CO2 Photolysis and O3 Formation

The Planetary Science Journal
The enrichment of heavy isotopes of volatile elements in the Martian atmosphere indicates that Mars lost a large portion of its atmosphere through escape to space. Recent atmospheric measurements by the ExoMars Trace Gas Orbiter (TGO) have suggested that
Tatsuya Yoshida, Shohei Aoki, Hiromu Nakagawa, Naoki Terada, Juan Alday, Akinori Hasebe, Yuki Nakamura, Shungo Koyama, Shotaro Sakai, Ryoya Sakata, Ann Carine Vandaele   +10 more
doaj   +1 more source

Evolution of atmospheric xenon and other noble gases inferred from Archean to Paleoproterozoic rocks

Geochimica et Cosmochimica Acta, 2018
We have analyzed ancient atmospheric gases trapped in fluid inclusions contained in minerals of Archean (3.3 Ga) to Paleozoic (404 Ma) rocks in an attempt to document the evolution of the elemental composition and isotopic signature of the atmosphere ...
G. Avice, B. Marty, R. Burgess, A. Hofmann, P. Philippot, K. Zahnle, D. Zakharov   +6 more
semanticscholar   +1 more source

Dose‐dependent hepatotoxicity of hydrogen peroxide in HepG2 cells and its modulation by CYP450 induction

FEBS Open Bio, EarlyView.
NMR metabolomics revealed concentration‐dependent metabolic perturbations in HepG2 cells exposed to H2O2. Rifampicin pretreatment enhanced metabolic competence, attenuated toxin‐induced alterations and produced metabolite profiles more consistent with human liver physiology, supporting the use of CYP450‐induced HepG2 models for improved in vitro ...
Maren Jinks, Garth L. Maker, Emily C. Davies, Berin A. Boughton, Samantha Lodge   +4 more
wiley   +1 more source

A Metal-poor Atmosphere with a Hot Interior for a Young Sub-Neptune Progenitor: JWST/NIRSpec Transmission Spectrum of V1298 Tau b

The Astronomical Journal
We present the JWST/NIRSpec G395H transmission spectrum of the young (10–30 Myr) transiting planet V1298 Tau b (9.85 ± 0.35 R _⊕ , T _eq  = 670 K). Combined Hubble Space Telescope and JWST observations reveal a haze-free, H/He-dominated atmosphere with a
Saugata Barat, Jean-Michel Désert, Sagnick Mukherjee, Jayesh M. Goyal, Qiao Xue, Yui Kawashima, Allona Vazan, William Misener, Hilke E. Schlichting, Jonathan J. Fortney, Jacob L. Bean, Swaroop Avarsekar, Gregory W. Henry, Robin Baeyens, Michael R. Line, John H. Livingston, Trevor David, Erik A. Petigura, James T. Sikora, Hinna Shivkumar, Adina D. Feinstein, Antonija Oklopčić   +21 more
doaj   +1 more source

Identification of (20R)‐protopanaxadiol from Panax ginseng as a novel anti‐SARS‐CoV‐2 compound

FEBS Open Bio, EarlyView.
We established a noninfectious BAC‐based SARS‐CoV‐2 replicon that enables antiviral screening under BSL‐2 conditions. Using this platform, we screened 373 food‐derived compounds and identified (20R)‐protopanaxadiol from Panax ginseng as a novel inhibitor of SARS‐CoV‐2 RNA replication, highlighting the value of safe replicon systems for antiviral ...
Midori Takeda, Natsue Maezono, Rina Uchikoshi, Nobuyuki Kato, Masanori Ikeda   +4 more
wiley   +1 more source

Aquatic ecosystems as a final receptor of atmospheric organic particulate-bound pollutants: a plea for the integration of aquatic ecotoxicology into the risk assessment of air pollution

Environmental Sciences Europe
Background Air pollution has detrimental effects on human health and is estimated to cause millions of premature deaths worldwide each year. The effects of polluted air on human health, ranging from respiratory and cardiovascular disorders to cognitive ...
Marc Wollenweber, Markus Schmitz, Saeed S. Albaseer, Sabrina Schiwy, Natalie Reininger, Werner Brack, Jörg Oehlmann, Joachim Curtius, Alexander L. Vogel, Henner Hollert   +9 more
doaj   +1 more source