Zobrazeno 1 - 10
of 87
pro vyhledávání: '"Per-Olof Westlund"'
Autor:
Christian Gösweiner, Perttu Lantto, Roland Fischer, Carina Sampl, Evrim Umut, Per-Olof Westlund, Danuta Kruk, Markus Bödenler, Stefan Spirk, Andreas Petrovič, Hermann Scharfetter
Publikováno v:
Physical Review X, Vol 8, Iss 2, p 021076 (2018)
The interaction between water protons and suitable quadrupolar nuclei (QN) can lead to quadrupole relaxation enhancement (QRE) of proton spins, provided the resonance condition between both spin transitions is fulfilled. This effect could be utilized
Externí odkaz:
https://doaj.org/article/42d4d74f593b44de9b82ab09e743e287
Autor:
Håkan Wennerström, Per-Olof Westlund
Publikováno v:
Entropy, Vol 19, Iss 5, p 186 (2017)
A detailed analysis of the classic Stern–Gerlach experiment is presented. An analytical simple solution is presented for the quantum description of the translational and spin dynamics of a silver atom in a magnetic field with a gradient along a sin
Externí odkaz:
https://doaj.org/article/4f5e5c81e1bb49d6857ed66cb9630123
Autor:
Aleksandra Skrobonja, Erik Björn, Zivan Gojkovic, Christiane Funk, Anne L. Soerensen, Per-Olof Westlund
Publikováno v:
Environmental Science & Technology. 53:13757-13766
Cellular uptake of dissolved methylmercury (MeHg) by phytoplankton is the most important point of entry for MeHg into aquatic food webs. However, the process is not fully understood. In this study we investigated the influence of chemical speciation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e3a37bd8433db11b1ced791b14fed205
https://doi.org/10.1021/acs.est.9b05164
https://doi.org/10.1021/acs.est.9b05164
A four-site exchange model is developed in order to explain deuterium -nuclear magnetic relaxation dispersion (NMRD) profiles of acetonitrile in silica pore systems. The four-site exchange model comprises a bulk, surface and two types of burried or c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2021c8029bf94aa73615f5ed4c8acbb
http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-162676
http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-162676
We present an extension of a Redfield approach for calculating spin-spin relaxation rates of zero-field nuclear quadrupole resonance (NQR) coherences, which was published in [Kruk et al., PCCP, 2018, 20, 23414-23426]. The oversimplification of the se
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::41e78e2ddb09b036329499fa617932de
http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-174277
http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-174277
Autor:
Per-Olof Westlund
Publikováno v:
Molecular Physics. 117:960-967
Snowflakes and ordinary hexagonal ice were studied measuring water proton spin–lattice relaxation rate R1(ωI)-nuclear magnetic resonance dispersion (NMRD) profiles at proton Larmor frequencies ranging from 1 to 30 MHz and at different temperatures
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8ba3ae2aa6570f6ecf96a39be8566258
https://doi.org/10.1080/00268976.2018.1541197
https://doi.org/10.1080/00268976.2018.1541197
Autor:
Tobias Sparrman, Yong-Lei Wang, Yang Huang, Per-Olof Westlund, Aatto Laaksonen, Gordon W. Driver
Publikováno v:
Physical Chemistry Chemical Physics. 19:4975-4988
Proton/Fluoride spin-lattice ($T_1$) nuclear magnetic relaxation dispersion (NMRD) measurements of 1-butyl-3-methyl-$1H$-imidazolium hexa-fluorophosphate, [$C_4mim][PF_6]$, have been carried out using high field spectrometers and fast-field-cycling i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b7f8adb121a529d809b3e7723da4c8e
https://doi.org/10.1039/c6cp05801a
https://doi.org/10.1039/c6cp05801a
Autor:
Håkan Wennerström, Per-Olof Westlund
We analyze the spin coincidence experiment considered by Bell in the derivation of Bells theorem. We solve the equation of motion for the spin system with a spin Hamiltonian, Hz, where the magnetic field is only in the z-direction. For the specific c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2e18a8ccf07856d688ddedd48273858f
http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-164094
http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-164094
Autor:
Per-Olof Westlund
Publikováno v:
Universal Journal of Chemistry. 4:69-73
Ganglioside GM1 (GM1) micelles have been studied by means of water proton T1 NMRD experiment. The field dependent spin-lattice relaxation rates were measured for Larmor frequencies ranging from 0.1 ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52212a9c05129c326a77e7a8b941bf9d
https://doi.org/10.13189/ujc.2016.040204
https://doi.org/10.13189/ujc.2016.040204
Autor:
Perttu Lantto, Christian Gösweiner, Markus Bödenler, Danuta Kruk, Stefan Spirk, Evrim Umut, Hermann Scharfetter, Per-Olof Westlund, Roland Fischer, Andreas Petrovic, Carina Sampl
Publikováno v:
Physical Review X, Vol 8, Iss 2, p 021076 (2018)
Physical Review X
Physical Review X
The interaction between water protons and suitable quadrupolar nuclei (QN) can lead to quadrupole relaxation enhancement (QRE) of proton spins, provided the resonance condition between both spin transitions is fulfilled. This effect could be utilized
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d37d3d8c24a94d74ba756ac6f64e67d4
https://doaj.org/article/42d4d74f593b44de9b82ab09e743e287
https://doaj.org/article/42d4d74f593b44de9b82ab09e743e287