Results 71 to 80 of about 372,868 (297)

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

open access: yesFEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva   +10 more
wiley   +1 more source

Macroscopic Resonant Tunneling in the Presence of Low Frequency Noise

open access: yes, 2008
We develop a theory of macroscopic resonant tunneling of flux in a double-well potential in the presence of realistic flux noise with significant low-frequency component.
Dmitri V. Averin, K. Blum, M. H. S. Amin
core   +1 more source

Structural biology of ferritin nanocages

open access: yesFEBS 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

Cavity-Resonance-Enabled Wireless Power Transfer System With Compensation for Frequency Fluctuations Caused by Equipment Installation and Its Operation

open access: yesIEEE Journal of Microwaves
We present a cavity resonance-enabled wireless power transfer (CR-WPT), in which the resonant frequency can be adjusted using a monopole probe with a reactance circuit (reactance probe).
Masaya Tamura, Aoi Ide
doaj   +1 more source

Electrostatically Tunable Meta-Atoms Integrated With In Situ Fabricated MEMS Cantilever Beam Arrays [PDF]

open access: yes, 2011
Two concentric split ring resonators (SRRs) or meta-atoms designed to have a resonant frequency of 14 GHz are integrated with microelectromechanical systems cantilever arrays to enable electrostatic tuning of the resonant frequency.
Collins, Peter J.   +5 more
core   +1 more source

Regulating entanglement production in multitrap Bose-Einstein condensates

open access: yes, 2006
A system of traps is considered, each containing a large number of Bose-condensed atoms. This ensemble of traps is subject to the action of an external modulating field generating nonequilibrium nonground-state condensates.
A. S. M. de Castro   +21 more
core   +1 more source

Adaptaquin is selectively toxic to glioma stem cells through disruption of iron and cholesterol metabolism

open access: yesMolecular Oncology, EarlyView.
Adaptaquin selectively kills glioma stem cells while sparing differentiated brain cells. Transcriptomic and proteomic analyses show Adaptaquin disrupts iron and cholesterol homeostasis, with iron chelation amplifying cytotoxicity via cholesterol depletion, mitochondrial dysfunction, and elevated reactive oxygen species.
Adrien M. Vaquié   +16 more
wiley   +1 more source

Estimation of Relative Permittivity of Printed Circuit Board with Fiber Glass Epoxy as Dielectric for UHF Applications

open access: yesTecnoLógicas, 2013
This paper presents the results of measuring relative permittivity of fiber glass printed circuit board (PCB’s), using a rectangular resonant cavity. The relative permittivity is presented as function of frequency.
Ronal D. Montoya-Montoya   +1 more
doaj  

Gap Coupled Dual-Band Petal Shape Patch Antenna for WLAN / WiMAX Applications

open access: yesAdvances in Electrical and Electronic Engineering, 2018
A compact gap coupled dual-band patch antenna is proposed for WLAN and WiMAX applications. Two resonating frequencies at 3.6GHz and 5.2GHz with a frequency ratio of 1.40 (theoretical), 1.45 (simulated) and 1.48 (measured) are observed.
Brijesh Mishra   +2 more
doaj   +1 more source

The measurement of resonant electrical circuit parameters

open access: yesИзвестия высших учебных заведений. Поволжский регион:Технические науки, 2021
Background. The purpose of the study is to develop techniques for measuring three- and four-element resonant electrical circuit parameters. Materials and methods.
A.V. Svetlov, N.M. Nguyen
doaj   +1 more source

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