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Showing 1 to 12 of 51 entries
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Low-frequency NMR with a non-resonant circuit.

Journal of magnetic resonance (San Diego, Calif. : 1997)

Hopper T, Mandal S, Cory D, Hürlimann M, Song YQ.
PMID: 21382732
J Magn Reson. 2011 May;210(1):69-74. doi: 10.1016/j.jmr.2011.02.014. Epub 2011 Feb 17.

Nuclear magnetic resonance typically utilizes a tuned resonance circuit with impedance matching to transmit power and receive signal. The efficiency of such a tuned coil is often described in terms of the coil quality factor, Q. However, in field...

Short-time restricted diffusion in a static gradient and the attenuation of individual coherence pathways.

Journal of magnetic resonance (San Diego, Calif. : 1997)

Zielinski LJ, Hürlimann MD.
PMID: 15504688
J Magn Reson. 2004 Nov;171(1):107-17. doi: 10.1016/j.jmr.2004.08.006.

We experimentally explore some of the implications of a recent theoretical study [J. Magn. Reson. 64 (2003) 145] for the measurement of restricted diffusion in connected porous media in a static gradient. In particular, we examine how restriction affects...

Correlation of transverse and rotational diffusion coefficient: a probe of chemical composition in hydrocarbon oils.

The journal of physical chemistry. A

Mutina AR, Hürlimann MD.
PMID: 18335907
J Phys Chem A. 2008 Apr 17;112(15):3291-301. doi: 10.1021/jp710254d. Epub 2008 Mar 12.

Measurements of relaxation time and diffusion coefficient by nuclear magnetic resonance are well-established techniques to study molecular motions in fluids. Diffusion measurements sense the translational diffusion coefficients of the molecules, whereas relaxation times measured at low magnetic fields probe...

Epidemiology of intestinal parasite infections in three departments of south-central Côte d'Ivoire before the implementation of a cluster-randomised trial.

Parasite epidemiology and control

Coulibaly G, Ouattara M, Dongo K, Hürlimann E, Bassa FK, Koné N, Essé C, Yapi RB, Bonfoh B, Utzinger J, Raso G, N'Goran EK.
PMID: 29774300
Parasite Epidemiol Control. 2018 Feb 18;3(2):63-76. doi: 10.1016/j.parepi.2018.02.003. eCollection 2018 May.

Hundreds of millions of people are infected with helminths and intestinal protozoa, particularly children in low- and middle-income countries. Preventive chemotherapy is the main strategy to control helminthiases. However, rapid re-infection occurs in settings where there is a lack...

Measurement of atomic-hydrogen spin-exchange parameters at 0.5 K using a cryogenic hydrogen maser.

Physical review. A, Atomic, molecular, and optical physics

Hardy WN, Hayden ME, Hürlimann MD.
PMID: 9913052
Phys Rev A. 1996 Mar;53(3):1589-1604. doi: 10.1103/physreva.53.1589.

No abstract available.

Efficacy and safety of co-administered ivermectin and albendazole in school-aged children and adults infected with Trichuris trichiura in Côte d'Ivoire, Laos, and Pemba Island, Tanzania: a double-blind, parallel-group, phase 3, randomised controlled trial.

The Lancet. Infectious diseases

Hürlimann E, Keller L, Patel C, Welsche S, Hattendorf J, Ali SM, Ame SM, Sayasone S, Coulibaly JT, Keiser J.
PMID: 34856181
Lancet Infect Dis. 2021 Nov 29; doi: 10.1016/S1473-3099(21)00421-7. Epub 2021 Nov 29.

BACKGROUND: Preventive chemotherapy with albendazole or mebendazole remains one of the cornerstones of soil-transmitted helminth control. However, these drugs are less effective against Trichuris trichiura. Combined ivermectin-albendazole is a promising treatment alternative, yet robust evidence is lacking. We aimed...

Corrigendum to "Falls and Fractures in the Elderly with Sinus Node Disease: The Impact of Pacemaker Implantation".

Cardiology research and practice

Krasniqi N, Segalada D, Lüscher TF, Lippuner K, Haegeli L, Steffel J, Wolber T, Brunckhorst C, Holzmeister J, Hürlimann D, Duru F.
PMID: 29158941
Cardiol Res Pract. 2017;2017:3297515. doi: 10.1155/2017/3297515. Epub 2017 Oct 19.

[This corrects the article DOI: 10.1155/2012/498102.].

Direct optimization of signal-to-noise ratio of CPMG-like sequences in inhomogeneous fields.

Journal of magnetic resonance (San Diego, Calif. : 1997)

Mandal S, Borneman TW, Koroleva VDM, Hürlimann MD.
PMID: 25241006
J Magn Reson. 2014 Oct;247:54-66. doi: 10.1016/j.jmr.2014.08.012. Epub 2014 Aug 30.

The performance of the standard CPMG sequence in inhomogeneous fields can be improved with the use of broadband excitation and refocusing pulses. In previous work we have developed short composite broadband refocusing pulses together with practical excitation pulses to...

Axis-matching excitation pulses for CPMG-like sequences in inhomogeneous fields.

Journal of magnetic resonance (San Diego, Calif. : 1997)

Mandal S, Koroleva VDM, Borneman TW, Song YQ, Hürlimann MD.
PMID: 24125955
J Magn Reson. 2013 Dec;237:1-10. doi: 10.1016/j.jmr.2013.09.004. Epub 2013 Sep 20.

The performance of the standard CPMG sequence in inhomogeneous fields can be improved with the use of broadband excitation and refocusing pulses. Here we introduce a new class of excitation pulses, so-called axis-matching excitation pulses, that optimize the response...

Probing asphaltene aggregation in native crude oils with low-field NMR.

Langmuir : the ACS journal of surfaces and colloids

Zielinski L, Saha I, Freed DE, Hürlimann MD, Liu Y.
PMID: 20131761
Langmuir. 2010 Apr 06;26(7):5014-21. doi: 10.1021/la904309k.

We show that low-field proton nuclear magnetic resonance (NMR) relaxation and diffusion experiments can be used to study asphaltene aggregation directly in crude oils. Relaxation was found to be multiexponential, reflecting the composition of a complex fluid. Remarkably, the...

An ultra-broadband low-frequency magnetic resonance system.

Journal of magnetic resonance (San Diego, Calif. : 1997)

Mandal S, Utsuzawa S, Cory DG, Hürlimann M, Poitzsch M, Song YQ.
PMID: 24632101
J Magn Reson. 2014 May;242:113-25. doi: 10.1016/j.jmr.2014.02.019. Epub 2014 Mar 04.

MR probes commonly employ resonant circuits for efficient RF transmission and low-noise reception. These circuits are narrow-band analog devices that are inflexible for broadband and multi-frequency operation at low Larmor frequencies. We have addressed this issue by developing an...

Probability of return to the origin at short times: A probe of microstructure in porous media.

Physical review. B, Condensed matter

Hürlimann MD, Schwartz LM, Sen PN.
PMID: 9978446
Phys Rev B Condens Matter. 1995 Jun 01;51(21):14936-14940. doi: 10.1103/physrevb.51.14936.

No abstract available.

Showing 1 to 12 of 51 entries