Results 161 to 170 of about 696 (211)

Tumor‐Targeted Hyaluronic Acid/Tannic Acid‐Engineered Oxygen Nanogenerators With IR780 Payloads Enable Dual‐Mode Glutathione Depletion and Effective Singlet Oxygen Generation for Melanoma Treatment

open access: yesAdvanced Healthcare Materials, EarlyView.
A hyaluronic acid/tannic acid‐engineered Prussian blue oxygen nanogenerator loaded with IR780 is developed to enhance melanoma phototherapy. By integrating tumor targeting, oxygen self‐supply, and dual‐mode glutathione depletion, the nanoplatform effectively overcomes hypoxia and antioxidant defenses, potentiating synergistic photothermal/photodynamic ...
Chai‐How Hsu   +7 more
wiley   +1 more source

Overcoming Photodynamic Therapy Resistance: GSH‐Responsive AIE Photosensitizer‐Hydroxycamptothecin Nanoliposomes for Extrahepatic Cholangiocarcinoma

open access: yesAdvanced Healthcare Materials, EarlyView.
A GSH‐responsive AIE nanoplatform (TSH NPs) with RGD‐mediated tumor targeting co‐delivers a photosensitizer (TPA) and HCPT for extrahepatic cholangiocarcinoma. The system synergistically enhances PDT and chemotherapy by suppressing HIF‐1α/VEGF‐driven hypoxic adaptation, effectively overcoming PDT resistance.
Yong Qu   +19 more
wiley   +1 more source
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A flux pump for NMR magnets

IEEE Transactions on Applied Superconductivity, 2003
A flux pump coupled to a slightly dissipative NMR magnet enables the magnet to operate effectively in persistent mode. This paper presents: 1) design and operation concept of the flux pump; 2) parameters and performance results of a prototype flux pump; and 3) a plan to couple a full-scale flux pump to two NMR magnets, one comprised of low- and high ...
Yukikazu Iwasa, Haigun Lee
exaly   +2 more sources

Particle flux measurements with pump limiters [PDF]

open access: yesJournal of Nuclear Materials, 1987
Abstract The pressure buildup in pump limiters is a function of the incident particle flux, the pump limiter geometry, particle-surface interactions, and effects due to interactions of the neutral gas with the incoming plasma. At sufficiently low density and for a short pump limiter throat, the pressure observed in the pump limiter chamber is a ...
P Mioduszewski
exaly   +2 more sources

Design Parameters for an HTS Flux Pump

open access: yesPhysics Procedia, 2012
AbstractFlux pumps are devices to energize superconducting magnets and are embedded in the cryo-system. Therefore heat loss through current leads is eliminated allowing for more efficient cooling design. This is particularly advantageous for HTS based magnet systems which cannot be operated in a persistent mode because of the inability to form ...
Roberval Walsh
exaly   +2 more sources

A thermally switched flux pump

IEEE Transactions on Magnetics, 1975
This paper describes a superconducting power supply (flux pump) of the transformer rectifier type in which the rectification is produced by thermal switching. The supply is intended for use with a superconducting magnet. At an operating current of 1000A the pump can charge a magnet at about 20 W with an efficiency greater than 93%.
G. Homer   +3 more
openaire   +1 more source

Flux Pump for HTS Magnets

IEEE Transactions on Applied Superconductivity, 2011
Magnets fabricated with HTS wire can not be operated in a true persistent mode as superconducting joints of sufficient technological quality have not been achieved to date. In order to maintain a constant magnetic field in a HTS magnet a power supply has to be permanently employed, which then leads to heat losses in the cryo-system through the ...
Christian Hoffmann   +2 more
exaly   +2 more sources

An automatic superconducting flux pump

Physics Letters, 1966
Abstract The design and operation of a simple self-switching and self-rectifying flux pump is discussed. The concept has been tested using a low temperature transformer and a 10 kOe, 30 A, Nb-Zr coil paralleled by a 45 A switching coil made from Pb-Sn solder.
H.L. Laquer, K.J. Carroll, E.F. Hammel
openaire   +1 more source

Flux pumps and superconducting solenoids

Physica, 1965
Abstract A review is given of the various types of flux pumps and current generators which have been developed so far in several laboratories. Experiments carried out with wire- and foil-solenoids, fed by the flux pump developed in the Kamerligh Onnes Laboratory, are discussed.
H. Van Beelen   +6 more
openaire   +1 more source

Armature reaction in a flux pump

IEEE Transactions on Magnetics, 1987
The self-inductance of a rotating spot flux pump is responsible for the drop of output voltage from the pump. The magnitude of this effect referred to as the "armature reaction" has been studied in this paper. It is shown that this reaction is a function of the current generated, the speed of rotation, and the shape of the magnetic poles used in the ...
O. Mawardi, null Shangang Xu
openaire   +1 more source

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