Zobrazeno 11 - 20
of 573
pro vyhledávání: '"Singer, Philip"'
The intra-molecular $^1$H-NMR dipole-dipole relaxation of molecular fluids has traditionally been interpreted within the Bloembergen-Purcell-Pound (BPP) theory of NMR intra-molecular relaxation. The BPP theory draws upon Debye's theory for describing
Externí odkaz:
http://arxiv.org/abs/2006.06055
Autor:
Singer, Philip M., Parambathu, Arjun Valiya, Wang, Xinglin, Asthagiri, Dilip, Chapman, Walter G., Hirasaki, George J., Fleury, Marc
The mechanism behind the $^1$H NMR frequency dependence of $T_1$ and the viscosity dependence of $T_2$ for polydisperse polymers and bitumen remains elusive. We elucidate the matter through NMR relaxation measurements of polydisperse polymers over an
Externí odkaz:
http://arxiv.org/abs/2003.02370
Autor:
Parambathu, Arjun Valiya, Singer, Philip M., Hirasaki, George J., Chapman, Walter G., Asthagiri, D.
The mechanism behind the NMR surface relaxation and the large $T_1$/$T_2$ ratio of light hydrocarbons confined in the nano-pores of kerogen remains poorly understood, and consequently has engendered much debate. Towards bringing a molecular-scale res
Externí odkaz:
http://arxiv.org/abs/2001.07310
Autor:
Liu, Yunke, Wang, Xinglin, Hirasaki, George J., Vinegar, Eva G., Vinegar, Harold J., Singer, Philip M.
Publikováno v:
In Fuel 1 February 2023 333 Part 2
The translational-diffusion coefficient $D_T$ and the spin-rotation contribution to the $^1$H NMR relaxation time $T_{1J}$ for methane (CH$_4$) are investigated using MD (molecular dynamics) simulations, over a wide range of densities $\rho$ and temp
Externí odkaz:
http://arxiv.org/abs/1802.10191
Autor:
Singer, Philip M., Asthagiri, Dilip, Chen, Zeliang, Parambathu, Arjun Valiya, Hirasaki, George J., Chapman, Walter G.
The role of internal motions and molecular geometry on $^1$H NMR relaxation times $T_{1,2}$ in hydrocarbons is investigated using MD (molecular dynamics) simulations of the autocorrelation functions for in{\it tra}molecular $G_R(t)$ and in{\it ter}mo
Externí odkaz:
http://arxiv.org/abs/1801.07803
Akademický článek
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Publikováno v:
In Fuel 15 November 2020 280
Autor:
Singer, Philip Morgan, 1973
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, February 2003.
In title on t.p., double-underscored "x" appears as subscript.
Includes bibliographical references (p. 138-144).
by Philip Morgan Singer.
Ph.
In title on t.p., double-underscored "x" appears as subscript.
Includes bibliographical references (p. 138-144).
by Philip Morgan Singer.
Ph.
Externí odkaz:
http://hdl.handle.net/1721.1/29313
Autor:
Ryu, Seungoh, Zhao, Weishu, Leu, Gabriela, Singer, Philip M., Cho, Hyung Joon, Keehm, Youngseuk
The diffusion/relaxation behavior of polarized spins of pore filling fluid, as often probed by NMR relaxometry, is widely used to extract information on the pore-geometry. Such information is further interpreted as an indicator of the key transport p
Externí odkaz:
http://arxiv.org/abs/0908.1962