Results 71 to 80 of about 2,918,823 (240)

Multiphase Chemistry in the Atmosphere

CHIMIA
Earth’s atmosphere comprises a complex mix of gas and condensed phases, where condensed phases facilitate multiphase chemical reactions that would not occur in the gas phase alone. These reactions drive dynamic physical and chemical processes across various spatial and temporal scales, playing a crucial role in the cycling of atmospheric trace ...
Ammann, Markus, Alpert, Peter A., Artiglia, Luca, Bao, Fengxia, Bartels-Rausch, Thorsten, Flórez Ospina, Juan Felipe, Garner, Natasha M., Iezzi, Lucia, Kilchhofer, Kevin, Laso, Andrés, Longetti, Luca, Mahrt, Fabian   +11 more
openaire   +7 more sources

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

A Lagrangian model of air-mass photochemistry and mixing using a trajectory ensemble: the Cambridge Tropospheric Trajectory model of Chemistry And Transport (CiTTyCAT) version 4.2 [PDF]

, 2011
A Lagrangian model of photochemistry and mixing is described (CiTTyCAT, stemming from the Cambridge Tropospheric Trajectory model of Chemistry And Transport), which is suitable for transport and chemistry studies throughout the troposphere. Over the last
Owen, M. S., M. Cain, E. Real, S. R. Arnold, Arnold, S. R., T. A. M. Pugh, Wild, O., Law, K. S., Pyle, J. A., Owen, S. M., A. R. MacKenzie, Hewitt, C. N., Arnold, S.R., Methven, J., J. A. Pyle, Emmerson, K. M., Emmerson, K.M., Law, K.S., Cain, Michelle, O. Wild, Owen, S.M., Pyle, J.A., K. S. Law, Cain, M., MacKenzie, A.R., K. M. Emmerson, S. M. Owen, C. N. Hewitt, Law, Kathy S., J. Methven, Pugh, T. A. M., Mackenzie, A. R., Real, Elsa, Hewitt, C.N., J. A . Pyle, Real, E., Mackenzie, Rob, Pugh, T.A.M., Pugh, Thomas, MacKenzie, A.R.; id_orcid   +39 more
core   +2 more sources

Development of the adjoint of the unified tropospheric–stratospheric chemistry extension (UCX) in GEOS-Chem adjoint v36 [PDF]

Geoscientific Model Development
Atmospheric sensitivities (gradients), quantifying the atmospheric response to emissions or other perturbations, can provide meaningful insights on the underlying atmospheric chemistry or transport processes.
I. C. Dedoussi, I. C. Dedoussi, I. C. Dedoussi, D. K. Henze, S. D. Eastham, S. D. Eastham, R. L. Speth, S. R. H. Barrett   +7 more
doaj   +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

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

What can 14 CO measurements tell us about OH? [PDF]

, 2008
The possible use of 14CO measurements to constrain hydroxyl radical (OH) concentrations in the atmosphere is investigated. 14CO is mainly produced in the upper atmosphere from cosmic radiation.
Mak, J., Bergamaschi, P., Krol, M.C., Dep Natuurkunde, Meirink, J., Marine and Atmospheric Research, Meirink, J.F., Lowe, D.   +7 more
core   +2 more sources

Observation of sulphate aerosols and SO2 from volcanic eruptions using data from the Atmospheric Chemistry Experiment (ACE) [PDF]

, 2011
Infrared spectra measured by the Atmospheric Chemistry Experiment Fourier Transform Spectrometer (ACE-FTS) on board of the SCISAT satellite were used to analyse the temporal and spatial evolution of volcanic aerosols from the Kasatochi (August 2008 ...
Doeringer, Debora
core   +4 more sources

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

Effects of stratosphere-troposphere chemistry coupling on tropospheric ozone [PDF]

, 2010
[1] A new, computationally efficient coupled stratosphere-troposphere chemistry-climate model (S/T-CCM) has been developed based on three well-documented components: a 64-level general circulation model from the UK Met Office Unified Model, the ...
Tian, W, Wenshou Tian, Martyn P. Chipperfield, Anu Dudhia, Dhomse, Sandip, Damoah, Richard, Pumphrey, H, Chipperfield, Martyn P., Richard Damoah, Damoah, R, Tian, Wenshou, Dudhia, Anu, Stevenson, DS, Peter Bernath, Dudhia, A, Stevenson, David S.; id_orcid, Dhomse, S, Bernath, Peter, Chipperfield, MP, David S. Stevenson, Sandip Dhomse, Hugh Pumphrey, Pumphrey, Hugh, Bernath, P   +23 more
core   +1 more source