Results 71 to 80 of about 266,617 (137)

Study on Emergency Load Shedding of Hybrid AC/DC Receiving-End Power Grid with Stochastic, Static Characteristics-Dependent Load Model

open access: yesEnergies, 2019
When large-capacity HVDC (high voltage direct current) transmission line blocking occurs in a hybrid AC/DC (alternating current/direct current) power grid, the receiving-end system will encounter a huge power imbalance, which will lead to a frequency ...
Yingying Jiang   +6 more
doaj   +1 more source

MicroRNA-22 impairs anti-tumor ability of dendritic cells by targeting p38. [PDF]

open access: yesPLoS ONE, 2015
Dendritic cells (DCs) play a critical role in triggering anti-tumor immune responses. Their intracellular p38 signaling is of great importance in controlling DC activity.
Xue Liang   +6 more
doaj   +1 more source

Zero-temperature spin-glass freezing in self-organized arrays of Co nanoparticles [PDF]

open access: yes, 2010
We study, by means of magnetic susceptibility and magnetic aging experiments, the nature of the glassy magnetic dynamics in arrays of Co nanoparticles, self-organized in N layers from N=1 (two-dimensional limit) up to N=20 (three-dimensional limit).
C. Deranlot   +9 more
core   +3 more sources

Coupled line directional couplers with controlling type of directivity

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника, 2015
The original design approach for 0-dB directional coupler with forward and backward coupling in two different frequency bands is proposed. The device is realized by loading the coupled line based directional coupler by split ring and mushroom resonators.
I. V. Munina
doaj  

Analysis of Passive Charge Balancing for Safe Current-Mode Neural Stimulation [PDF]

open access: yes, 2017
Charge balancing has been often considered as one of the most critical requirement for neural stimulation circuits. Over the years several solutions have been proposed to precisely balance the charge transferred to the tissue during anodic and ...
Ballini, Marco   +3 more
core   +1 more source

A CTLA-4 blocking strategy based on Nanoboby in dendritic cell-stimulated cytokine-induced killer cells enhances their anti-tumor effects

open access: yesBMC Cancer, 2021
Background Cytokine-induced killer cells induced with tumor antigen-pulsed dendritic cells (DC-CIK) immunotherapy is a promising strategy for the treatment of malignant tumors. However, itsefficacy isrestricted by the immunosuppression, which is mediated
Wu Wang   +9 more
doaj   +1 more source

Analysis of Internally Bandlimited Multistage Cubic-Term Generators for RF Receivers [PDF]

open access: yes, 2009
Adaptive feedforward error cancellation applied to correct distortion arising from third-order nonlinearities in RF receivers requires low-noise low-power reference cubic nonidealities.
Hajimiri, Ali, Keehr, Edward A.
core   +1 more source

Equalization of Third-Order Intermodulation Products in Wideband Direct Conversion Receivers [PDF]

open access: yes, 2008
This paper reports a SAW-less direct-conversion receiver which utilizes a mixed-signal feedforward path to regenerate and adaptively cancel IM3 products, thus accomplishing system-level linearization.
Hajimiri, Ali, Keehr, Edward A.
core   +1 more source

Enhanced grain surface effect on magnetic properties of nanometric La0.7Ca0.3MnO3 manganite : Evidence of surface spin freezing of manganite nanoparticles

open access: yes, 2007
We have investigated the effect of nanometric grain size on magnetic properties of single phase, nanocrystalline, granular La0.7Ca0.3MnO3 (LCMO) sample.
Effects S.   +5 more
core   +1 more source

Complement opsonization of HIV-1 enhances the uptake by dendritic cells and involves the endocytic lectin and integrin receptor families.

open access: yesPLoS ONE, 2011
Interaction with the complement system is an underappreciated aspect of HIV-1 infection; even in primary infection, complement fragments are found on virions with potential to affect the interplay between the virus and dendritic cells (DC).
Veronica Tjomsland   +5 more
doaj   +1 more source

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