Zobrazeno 1 - 10
of 79
pro vyhledávání: '"Roman V, Shchepin"'
Autor:
Nadezhda E Shchepina, Galina A Alexandrova, Svetlana Y Balandina, Igor I Boiko, Sandeep Chaudhary, Roman V Shchepin
Publikováno v:
Indian Journal of Dermatology, Vol 68, Iss 4, Pp 487-487 (2023)
Background: Microsporum canis (Bodin, 1902) is a dermatophyte, which is widely represented in the developing and the developed world alike. Commonly transmitted from domestic animals it is particularly dangerous for immunosuppressed patients due to A
Externí odkaz:
https://doaj.org/article/738ec7762d204b6383e3b0c313e576bf
Autor:
Bryce E. Kidd, Max E. Gemeinhardt, Jamil A. Mashni, Jonathan L. Gesiorski, Liana B. Bales, Miranda N. Limbach, Roman V. Shchepin, Kirill V. Kovtunov, Igor V. Koptyug, Eduard Y. Chekmenev, Boyd M. Goodson
Publikováno v:
Molecules, Vol 28, Iss 3, p 1198 (2023)
The present work investigates the potential for enhancing the NMR signals of DNA nucleobases by parahydrogen-based hyperpolarization. Signal amplification by reversible exchange (SABRE) and SABRE in Shield Enables Alignment Transfer to Heteronuclei (
Externí odkaz:
https://doaj.org/article/1e13714edefe44779f75301d1727ca52
Autor:
Nikita V. Chukanov, Oleg G. Salnikov, Roman V. Shchepin, Kirill V. Kovtunov, Igor V. Koptyug, Eduard Y. Chekmenev
Publikováno v:
ACS Omega, Vol 3, Iss 6, Pp 6673-6682 (2018)
Externí odkaz:
https://doaj.org/article/a94c02c2b6524c32abb448c37899ca05
Autor:
Roman V. Shchepin, Eduard Y. Chekmenev, Nikita V. Chukanov, Kirill V. Kovtunov, Oleg G. Salnikov, Larisa M. Kovtunova, Valerii I. Bukhtiyarov, Igor V. Koptyug
Publikováno v:
ChemPhysChem. 22:1389-1396
Magnetic resonance imaging of [1-13 C]hyperpolarized carboxylates (most notably, [1-13 C]pyruvate) allows one to visualize abnormal metabolism in tumors and other pathologies. Herein, we investigate the efficiency of 1 H and 13 C hyperpolarization of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::001c53a01d2d1bcf5018bfdec82bcb17
https://doi.org/10.1002/cphc.202100156
https://doi.org/10.1002/cphc.202100156
Autor:
Sameer M. Joshi, Juri G. Gelovani, Igor V. Koptyug, Roman V. Shchepin, Oleg G. Salnikov, Mohammad Shah Hafez Kabir, Alexandra Svyatova, Eduard Y. Chekmenev, Nikita V. Chukanov
Publikováno v:
Chemistry – A European Journal. 27:9727-9736
NMR hyperpolarization techniques enhance nuclear spin polarization by several orders of magnitude resulting in corresponding sensitivity gains. This enormous sensitivity gain enables new applications ranging from studies of small molecules by using h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d86a3ce90dec77f811998a20a285a701
https://doi.org/10.1002/chem.202100212
https://doi.org/10.1002/chem.202100212
Autor:
Raul Laasner, Zijian Zhou, Warren S. Warren, Steven J. Malcolmson, Angus W. J. Logan, Thomas Theis, Roman V. Shchepin, Jacob R. Lindale, Volker Blum, Eduard Y. Chekmenev, Johannes F. P. Colell
Publikováno v:
Chem Commun (Camb)
Signal Amplification By Reversible Exchange (SABRE) is a particularly simple hyperpolarisation approach. However, compared to other hyperpolarisation methods, SABRE is more limited in substrate scope. Therefore, it is critical to understand and overc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::66dcdd9fd590230f72b5659eebdc95cb
https://doi.org/10.1039/d0cc01330g
https://doi.org/10.1039/d0cc01330g
Publikováno v:
Radiochemistry. 62:101-106
A study of ion-molecular reactions of fluoro-substituted phenyl cations with benzopyridine derivatives demonstrated the following: (a) at present only the nuclear-chemical method enables the reaction of a direct phenylation of the nitrogen atom in be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b781dfd321e7c38507aade3bf8669a2
https://doi.org/10.1134/s1066362220010130
https://doi.org/10.1134/s1066362220010130
Autor:
Nikita V. Chukanov, Roman V. Shchepin, Sameer M. Joshi, Mohammad S. H. Kabir, Oleg G. Salnikov, Alexandra Svyatova, Igor V. Koptyug, Juri G. Gelovani, Eduard Y. Chekmenev
Publikováno v:
Chemistry – A European Journal. 27
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::96b30bef9ba169341d46d25731fe3a0b
https://doi.org/10.1002/chem.202183862
https://doi.org/10.1002/chem.202183862
Publikováno v:
Radiochimica Acta. 108:105-111
Quinazoline derivatives are well known to have a diverse array of therapeutic activities. Unfortunately, “classic” chemical synthesis does not provide an opportunity for the formation of N-phenyl quaternary 1,3-diazinium compounds. A devised nucl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e8b7895614977d72c521509dd4aa14c7
https://doi.org/10.1515/ract-2018-2970
https://doi.org/10.1515/ract-2018-2970
Autor:
Thomas Theis, Sepideh Shokouhi, Juri G. Gelovani, Yi-Fen Yen, Warren S. Warren, Kirill V. Kovtunov, Boyd M. Goodson, Eduard Y. Chekmenev, Nikita V. Chukanov, Igor V. Koptyug, Jonathan R Birchall, Roman V. Shchepin, Matthew S. Rosen, Wellington Pham
Publikováno v:
Chemistry – A European Journal. 25:8829-8836
The NMR hyperpolarization of uniformly 15 N-labeled [15 N3 ]metronidazole is demonstrated by using SABRE-SHEATH. In this antibiotic, the 15 NO2 group is hyperpolarized through spin relays created by 15 N spins in [15 N3 ]metronidazole, and the polari
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68b10a99db29f546a00dd9316ace79ee
https://doi.org/10.1002/chem.201901192
https://doi.org/10.1002/chem.201901192