Results 41 to 50 of about 133,329 (294)

Magnetic superlens-enhanced inductive coupling for wireless power transfer

open access: yes, 2012
We investigate numerically the use of a negative-permeability "perfect lens" for enhancing wireless power transfer between two current carrying coils. The negative permeability slab serves to focus the flux generated in the source coil to the receiver ...
Da Huang   +5 more
core   +1 more source

Relativistic Modification of the Gamow Factor [PDF]

open access: yes, 1999
In processes involving Coulomb-type initial- and final-state interactions, the Gamow factor has been traditionally used to take into account these additional interactions. The Gamow factor needs to be modified when the magnitude of the effective coupling
A. Sommerfeld   +24 more
core   +2 more sources

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Classification and Localization of Mixed Sources after Blind Calibration of Unknown Mutual Coupling

open access: yesInternational Journal of Antennas and Propagation, 2019
In order to deal with the problem of passive mixed source localization under unknown mutual coupling, the authors propose an effective algorithm. This algorithm provides array blind calibration as well as classification and localization of mixed sources ...
Kai Wang   +3 more
doaj   +1 more source

Mutual Coupling Reduction of a Wideband Circularly Polarized Microstrip MIMO Antenna

open access: yesIEEE Access, 2019
Mutual coupling (MC) between elements in an antenna array could significantly affect antenna performance, but this effect has rarely been reported for circularly polarized (CP) antennas.
Ismahayati Adam   +7 more
doaj   +1 more source

Controlled dephasing in single-dot Aharonov-Bohm interferometers [PDF]

open access: yes, 2006
We study the Fano effect and the visibility of the Aharonov-Bohm oscillations for a mesoscopic interferometer with an embedded quantum dot in the presence of a nearby second dot.
Moldoveanu V., Tanatar, B., Ţolea, M.
core   +2 more sources

Monitoring of circulating tumor DNA allows early detection of disease relapse in patients with operable breast cancer

open access: yesMolecular Oncology, EarlyView.
Monitoring circulating tumor DNA (ctDNA) in patients with operable breast cancer can reveal disease relapse earlier than radiology in a subset of patients. The failure to detect ctDNA in some patients with recurrent disease suggests that ctDNA could serve as a supplement to other monitoring approaches.
Kristin Løge Aanestad   +35 more
wiley   +1 more source

Mutual coupling reduction with a novel fractal electromagnetic bandgap structure [PDF]

open access: yesIET Microwaves, Antennas & Propagation, 2018
This work shows the effect of a novel fractal‐based electromagnetic bandgap (FEBG) structure between dual planar inverted‐F antenna (PIFA) elements. The FEBG structure without any shorting pins builds on a well‐known fractal structure called Sierpinski carpet, where two iterations have been applied as a uniplanar EBG between dual ...
Alaa H. Radhi   +5 more
openaire   +3 more sources

Quantized spin wave modes in magnetic tunnel junction nanopillars

open access: yes, 2010
We present an experimental and theoretical study of the magnetic field dependence of the mode frequency of thermally excited spin waves in rectangular shaped nanopillars of lateral sizes 60x100, 75x150, and 105x190 nm2, patterned from MgO-based magnetic ...
A. Helmer   +9 more
core   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

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