Results 111 to 120 of about 137,461 (372)

Myocardial perfusion scintigraphy in the diagnostics of takotsubo syndrome

open access: yesРоссийский кардиологический журнал, 2018
We analyzed the publications about single-photon emission computed tomography in the diagnostics of takotsubo syndrome; the dynamics of testing data are presented on a clinical example.
A. I. Abdrakhmanova   +2 more
doaj   +1 more source

Unveiling Aggregation‐Induced Singlet Fission in Push–Pull Diketopyrrolopyrrole Water Dispersed Nanoaggregates and Thin Films

open access: yesAdvanced Functional Materials, EarlyView.
Aggregates of diketopyrrolopyrrole dipolar and quadrupolar systems exhibit panchromatic absorption spectra extending in the entire visible range. Upon aggregation in water and in the solid state, their fluorescence is almost completely quenched and their singlet excited state lifetime is significantly shortened.
Roberto Cantoni   +10 more
wiley   +1 more source

High-rate, high-fidelity entanglement of qubits across an elementary quantum network

open access: yes, 2020
We demonstrate remote entanglement of trapped-ion qubits via a quantum-optical fiber link with fidelity and rate approaching those of local operations.
An, S   +9 more
core   +1 more source

Naturally Derived Donor‐π‐Acceptor Compounds for Efficient Long‐Wavelength LEDs/Sunlight‐Induced Polymerization and High‐Precision Multiple 3D Printing

open access: yesAdvanced Functional Materials, EarlyView.
Two novel donor–π–acceptor photoinitiators enable ultrafast long‐wavelength photopolymerization under blue/green LEDs and sunlight. Effective at low intensities and concentrations, they overcome slow kinetics and permit rapid 3D printing via DLW, DLP, and LCD methods.
Ji Feng   +9 more
wiley   +1 more source

Single photon emission computed tomography: An alternative imaging modality in left ventricular evaluation

open access: yesVascular Health and Risk Management, 2008
Hulya Yalçin1,3, Sofiane Maza1, Fatih Yalçin2,41Department of Nuclear Medicine; 2Center for Cardiovascular Research, Charite University, Berlin, Germany; 3Department of Nuclear Medicine; 4Department of Cardiology, Mustafa Kemal University ...
Hulya Yalçin   +2 more
doaj  

First in vivo evaluation of a potential SPECT brain radiotracer for the gonadotropin releasing hormone receptor

open access: yesBMC Research Notes, 2018
Objectives In vivo evaluations of a gonadotropin releasing hormone-receptor single photon emission computed tomography radiotracer for non-invasive detection of gonadotropin releasing homone-receptors in brain.
Richard Fjellaksel   +7 more
doaj   +1 more source

Imaging in neurological and vascular brain diseases (SPECT and SPECT/CT) [PDF]

open access: yes, 2015
Since the first in vivo studies of cerebral function with radionuclides by Ingvar and Lassen, nuclear medicine (NM) brain applications have evolved dramatically, with marked improvements in both methods and tracers.
Lucena, Filipa, Sousa, Eva, Vaz, Tânia
core  

Tuning the Electronic Structure and Spin State of Fe─N─C Catalysts Using an Axial Oxygen Ligand and Fe Clusters for High‐Efficiency Rechargeable Zinc–Air Batteries

open access: yesAdvanced Functional Materials, EarlyView.
A FeN4─O/Clu@NC‐0.1Ac catalyst containing atomically‐dispersed FeN4─O sites (medium‐spin Fe2+) and Fe clusters delivered a half‐wave potential of 0.89 V for ORR and an overpotential of 330 mV at 10 mA cm−2 for OER in 0.1 m KOH. When the catalyst was used in a rechargeable Zn–air battery, a power density of 284.5 mW cm−2 was achieved with excellent ...
Yongfang Zhou   +8 more
wiley   +1 more source

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