Results 41 to 50 of about 258,747 (280)

Introducing a frequency-tunable magnetic particle spectrometer

Current Directions in Biomedical Engineering, 2015
Image quality in the new imaging modality magnetic particle imaging (MPI) heavily relies on the quality of the magnetic nanoparticles in use. Therefore, it is crucial to understand the behaviour of such particles.
Behrends André, Graeser Matthias, Buzug Thorsten M.   +2 more
doaj   +1 more source

Enhanced Optical 13C Hyperpolarization in Diamond Treated by High-Temperature Rapid Thermal Annealing [PDF]

, 2020
Methods of optical dynamic nuclear polarization open the door to the replenishable hyperpolarization of nuclear spins, boosting their nuclear magnetic resonance/imaging signatures by orders of magnitude.
Aguilar, A, Ajoy, A, Druga, E, Gierth, M, Krespach, V, Le, S, Lv, X, Meriles, CA, Nirodi, R, Nunn, N, Pines, A, Raghavan, P, Reimer, JA, Shames, AI, Shen, M, Shenderova, O, Torelli, M, Zaitsev, A, Zhao, R   +18 more
core   +1 more source

Simultaneous Coercivity and Size Determination of Magnetic Nanoparticles

Sensors, 2020
Magnetic nanoparticles are increasingly employed in biomedical applications such as disease detection and tumor treatment. To ensure a safe and efficient operation of these applications, a noninvasive and accurate characterization of the particles is ...
Annelies Coene, Jonathan Leliaert
doaj   +1 more source

Magnetic Nanoparticles in Biology and Medicine: Past, Present, and Future Trends

Pharmaceutics, 2021
The use of magnetism in medicine has changed dramatically since its first application by the ancient Greeks in 624 BC. Now, by leveraging magnetic nanoparticles, investigators have developed a range of modern applications that use external magnetic ...
Deanna D. Stueber, Jake Villanova, Itzel Aponte, Zhen Xiao, Vicki L. Colvin   +4 more
doaj   +1 more source

Solar Physics with the Square Kilometre Array [PDF]

, 2018
The Square Kilometre Array (SKA) will be the largest radio telescope ever built, aiming to provide collecting area larger than 1 km$^2$. The SKA will have two independent instruments, SKA-LOW comprising of dipoles organized as aperture arrays in ...
Kontar, E. P., Nindos, A., Oberoi, D.
core   +2 more sources

Conjugate Hard X-ray Footpoints in the 2003 October 29 X10 Flare: Unshearing Motions, Correlations, and Asymmetries

, 2008
We present a detailed imaging and spectroscopic study of the conjugate hard X-ray (HXR) footpoints (FPs) observed with RHESSI in the 2003 October 29 X10 flare.
Asai, Aschwanden, Bogachev, Brian R. Dennis, Carmichael, Donea, Emslie, Fletcher, Gopalswamy, Gordon D. Holman, Grigis, Holman, Holman, Hudson, Hurford, Ji, Ji, Ji, Jiang, Kliem, Krucker, Krucker, Leach, Li, Li, Li, Li, Liu, Liu, Liu, Liu, Liu, Liu, Liu, Liu, McClements, Melrose, Metcalf, Moore, Petrosian, Petrosian, Petschek, Qiu, Qiu, Qiu, Reeves, Sakao, Sakao, Saldanha, Schmahl, Schrijver, Schwartz, Somov, Su, Sudol, Sui, Sui, Sui, Tanaka, Tsuneta, Vahé Petrosian, Wang, Wang, Wei Liu, Xu, Xu, Xu, Yang, Young, Zharkova, Zharkova, Švestka   +71 more
core   +1 more source

Stripe sensor tomography [PDF]

, 2008
We introduce a general concept of tomographic imaging for the case of an imaging sensor that has a stripelike shape. We first show that there is no difference, in principle, between two-dimensional tomography using conventional electromagnetic or ...
Barbic, Mladen, Barrett, Christopher P., Emery, Teresa H., Scherer, Axel, Vitava, Lvcian   +4 more
core   +1 more source

Human-sized magnetic particle imaging for brain applications

Nature Communications, 2019
Magnetic particle imaging (MPI) has been applied to various pre-clinical settings, including detection of ischemic stroke in mice. Translation of MPI to a clinical setting has been obstacled by the lack of a device with sufficient bore size and, at the ...
M. Graeser, F. Thieben, P. Szwargulski, F. Werner, N. Gdaniec, M. Boberg, F. Griese, M. Möddel, P. Ludewig, D. van de Ven, O. M. Weber, O. Woywode, B. Gleich, T. Knopp   +13 more
doaj   +1 more source

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Magnetic-field measurement and simulation of a field-free line magnetic-particle scanner

Current Directions in Biomedical Engineering, 2017
In 2005, B. Gleich and J. Weizenecker initially presented the tracer based medical imaging modality Magnetic Particle Imaging (MPI). It uses the nonlinear magnetization behavior of super paramagnetic iron oxide nanoparticles (SPIONs).
Stelzner Jan, Buzug Thorsten M.
doaj   +1 more source