Results 31 to 40 of about 11,831 (256)

Potassium isotopes evidence reveals agricultural practices accelerate soil erosion

Geoderma
Stable potassium (K) isotopes, denoted as δ41K, are increasingly utilized for tracing geogenic processes and anthropogenic effects in terrestrial ecosystems.
Rui Qu, Guilin Han
doaj   +1 more source

Ecological and toxicological features of the effect of stable cesium on striated muscle tissue (myocardium and skeletal muscles) of mammals

Regulatory Mechanisms in Biosystems, 2023
Recently, the risks of radiation danger have significantly increased. This is connected with the start of a full-scale war against Ukraine and the seizure of the Zaporizhzhya NPP by the Russian Federation, which has the second most powerful arsenal of ...
O. Yermishev
doaj   +1 more source

Redox‐Modulated σ‐Bond Reactivity in a Radical‐Anion Dimer

Angewandte Chemie, EarlyView.
A radialene‐based radical anion σ‐dimer comprising an elongated C‐C bond exhibits orthogonal stimuli responsiveness. Homolytic cleavage of the dimer to the radical state is triggered by mechanical strain and high temperature. Dimer scission is also achieved via oxidation, resulting in formation of neutral radialenes.
Sushil Ranjan Bhatta, Jonathan H. Gillen, Amaya T. Jayaweera, Fuead Hasan, Diana P. Merenkov, Hai Zhao, Sepideh Asgari, Arthur H. Winter, Christopher M. Bejger   +8 more
wiley   +2 more sources

Electron Donor–Acceptor Complex Catalysis in Synthetic Chemistry

Angewandte Chemie, EarlyView.
Electron donor–acceptor (EDA) complexes are moving beyond stoichiometric photoactivation toward catalytic platforms for radical generation. Productive EDA catalysis requires coordinated donor–acceptor association, charge‐transfer excitation, radical reactivity, and vcatalyst turnover.
Tristan von Münchow, Andrea Palone, Jonathan Samuel Trimble, Paolo Melchiorre   +3 more
wiley   +2 more sources

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

Dialkyl Ethers and Sacrificial Zinc: Oxide Synthons for Calcium tert‐Butoxide Formation

Angewandte Chemie, EarlyView.
When treated with dialkyl ethers, [(BDI)Ca‐μ‐H‐Zn(t‐Bu)2(η6‐C7H8)] (BDI = HC{C(Me)NDipp}2 initiates a sequence of twofold ether dealkylation and oxide sequestration as tert‐butoxide in a process predicated on a combination of extreme basicity and a cooperative redox process administered by the dissimilar constituent metals. (Generative AI (ChatGPT) was
Kyle G. Pearce, Agustín Morales, Michael S. Hill, Claire L. McMullin   +3 more
wiley   +2 more sources

Efficacy of Trophic Transfer of Radioactive and Stable Isotopes of Metals to Zoobenthos-Feeding Fish of the Yenisei River [PDF]

Журнал Сибирского федерального университета: Серия Биология, 2013
Accumulation of radioactive and stable isotopes of metals in trophic chain of the Yenisei River leading to zoobenthivorous fish species, dace (Leuciscus leuciscus baicalensis) and grayling (Thymallus arcticus), have been investigated.
Tatiana A. Zotina, Elena A. Trofimova, Alexandr Ya. Bolsunovsky, Olesia V. Anishenko   +3 more
doaj  

Deciphering Degassing and Source Effects in Cl Isotopes in Melt Inclusions: The Possible Role of Amphibole in the Magma Source of Stromboli (Aeolian Island Arc)

Frontiers in Earth Science, 2022
Chlorine isotopes have emerged as a new geochemical tool over the past 15 years. Most of the data consist of bulk rock data, with a minority carried out in situ on melt inclusions using secondary ion mass spectrometry.
Anne-Sophie Bouvier, Estelle F. Rose-Koga, Alexis Chapuis   +2 more
doaj   +1 more source

Geothermal field of the Grodno region of the Republic of Belarus

Журнал Белорусского государственного университета: География, геология, 2023
The geothermal field of the platform cover within the Grodno region is considered. The cover rests on a crystalline basement of Precambrian rocks. Temperature distribution maps for depths of 100; 200 and 300 m below ground level were compiled based on ...
Владимир Игнатьевич Зуй
doaj  

ISOTOPIC-RADIOGEOCHEMICAL ANALYSIS OF GROUNDWATER AT THE KALUSH-GOLINSKY POTASSIUM SALT DEPOSIT

Геохімія техногенезу, 2022
The main potential sources of groundwater salinity of the gravel-pebble aquifer of the Kalush-Golinsky potassium salt deposit were analyzed. The distribution of tritium (3H) in groundwater and surface water of the territory adjacent to the Dombrovsky ...
Yа. Malkova, I. Kovalenko, Dolin V., Panasyuk M., Demikhov Yu., Sosonna N., Bagriy S., Kuzmenko E.   +7 more
doaj   +1 more source