Zobrazeno 1 - 10
of 240
pro vyhledávání: '"E.R Andrew"'
Publikováno v:
Solid State Nuclear Magnetic Resonance. 14:91-94
Proton second moment and spin–lattice relaxation times T1 and T1ρ in solid anhydrous β-estradiol are measured as a function of temperature. The results show that the C3 reorientation of the single methyl group provides the mechanism dominating re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::35bf71e848519e8ea358b9db1248589c
https://doi.org/10.1016/s0926-2040(99)00009-0
https://doi.org/10.1016/s0926-2040(99)00009-0
Publikováno v:
Solid State Nuclear Magnetic Resonance. 10:117-121
Proton NMR measurements of the spectrum, second moment, spin-lattice relaxation time T 1 and dipolar relaxation time T 1D were carried out on polycrystalline l -adrenaline at 14 and 25 MHz between 55 and 400 K. Between 70 K and 250 K relaxation is do
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e603ce190858325bf9a4ed0c76fea6a7
https://doi.org/10.1016/s0926-2040(97)00077-5
https://doi.org/10.1016/s0926-2040(97)00077-5
Publikováno v:
Molecular Physics. 88:605-610
Polycrystalline cortisol (hydrocortisone; 11β,17α,21-trihydroxy-4-preg- nene-3,20-dione; C21H30O5) has been investigated by continuous and pulse proton NMR methods between 78 and 400 K at Larmor frequencies of 7, 25 and 60 MHz. A reduced value of s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e78721ac0f274288a2b9032fac3924d2
https://doi.org/10.1080/00268979609482440
https://doi.org/10.1080/00268979609482440
Autor:
E. Szczesniak, E.R. Andrew
Publikováno v:
Progress in Nuclear Magnetic Resonance Spectroscopy. 28:11-36
This article attempts to chronicle major milestones in the application of NMR in the solid state over the first 50 years since the discovery of NMR in 1945. After recording the earliest experiments with solids, we discuss in approximate chronological
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::221904ed4571010b7bc7e4ec7d670742
https://doi.org/10.1016/0079-6565(95)01018-1
https://doi.org/10.1016/0079-6565(95)01018-1
Autor:
E. Szczesniak, E.R. Andrew
Publikováno v:
Magnetic Resonance Imaging. 13:607-613
A new transverse gradient coil assembly of restricted length is presented. The coil is symmetric, has the advantage of simplicity, generates a remarkably large volume of uniform transverse gradient field, features very low inductance, and can therefo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cf19756a221bc751cf0ccdc6d5521d14
https://doi.org/10.1016/0730-725x(95)00002-x
https://doi.org/10.1016/0730-725x(95)00002-x
Autor:
E.R Andrew
Publikováno v:
Magma: Magnetic Resonance Materials in Physics, Biology, and Medicine. 2:143-146
The author notes a concentration of recent NMR-related anniversaries, including the 200th anniversary of the birth of George Green (1793) in Nottingham, the 150th anniversary of the birth of Boltzmann (1844), the 50th anniversary of the discovery of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::edbf68d1b2ad029f2595e5bd5ac18e6b
https://doi.org/10.1007/bf01705233
https://doi.org/10.1007/bf01705233
Publikováno v:
Journal of Magnetic Resonance, Series A. 107:194-202
The temperature dependence of the second moment of an NMR line, narrowed by molecular jumps in asymmetric potential wells, has been investigated by using the "near-zero"-frequency approach in the integration of the Fourier spectrum. It is shown that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6ba43cfe6696900a5f73d7a6a913021
https://doi.org/10.1006/jmra.1994.1068
https://doi.org/10.1006/jmra.1994.1068
Autor:
E.R Andrew, M. Kempka
Publikováno v:
Solid State Nuclear Magnetic Resonance. 2:261-264
Polycrystalline cortisone (17,21-dihydroxy-4-pregnene-3,11,20-trione, C21H28O5) has been investigated by proton NMR methods between 56 and 400 K at 14 and 25 MHz. Reductions in second moment and two very well-resolved minima in the spin-lattice relax
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c0b7aae2add77a7be9bd264db60026c
https://doi.org/10.1016/0926-2040(93)90006-9
https://doi.org/10.1016/0926-2040(93)90006-9
Autor:
E.R Andrew, J.M. Radomski
Publikováno v:
Solid State Nuclear Magnetic Resonance. 2:57-60
Polycrystalline testosterone (17 beta-hydroxy-4-androsten-3-one, C19H28O2) has been investigated by proton NMR methods between 70 K and the melting point 428 K. Reductions in dipolar second moment and two well-resolved minima in the spin-lattice rela
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::17df14ef3af2ece32263a708fa00aeca
https://doi.org/10.1016/0926-2040(93)90063-s
https://doi.org/10.1016/0926-2040(93)90063-s
Autor:
E.R. Andrew
Publikováno v:
Journal of Molecular Liquids. 54:261-271
An outline is given of the plans for the new U.S. National High Magnetic Field Laboratory to be built in Florida and of the NMR facilities at the Laboratory. In March, 1991, the National Science Foundation released a grant of $66M to a consortium of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c1d786fc493d990463d5580cc615a855
https://doi.org/10.1016/0167-7322(92)80035-g
https://doi.org/10.1016/0167-7322(92)80035-g