Results 21 to 30 of about 645,326 (295)

In vivo absolute quantification of striatal and extrastriatal D2/3 receptors with [123I]epidepride SPECT

open access: yesEJNMMI Research, 2020
Background [123I]epidepride is a high-affinity radiotracer used in single-photon emission computed tomography (SPECT) imaging of the D2/3 receptors. It binds with high affinity to striatal and extrastriatal receptors.
Stergios Tsartsalis   +2 more
doaj   +1 more source

Dissolution dominating calcification process in polar pteropods close to the point of aragonite undersaturation [PDF]

open access: yes, 2014
Thecosome pteropods are abundant upper-ocean zooplankton that build aragonite shells. Ocean acidification results in the lowering of aragonite saturation levels in the surface layers, and several incubation studies have shown that rates of calcification ...
AG Dickson   +57 more
core   +3 more sources

Synthesis of novel 13α-estrone derivatives by Sonogashira coupling as potential 17β-HSD1 inhibitors

open access: yesBeilstein Journal of Organic Chemistry, 2017
Novel 13α-estrone derivatives were synthesized by Sonogashira coupling. Transformations of 2- or 4-iodo regioisomers of 13α-estrone and its 3-methyl ether were carried out under different conditions in a microwave reactor. The 2-iodo isomers were reacted
Ildikó Bacsa   +6 more
doaj   +1 more source

Effect of intentional restriction of venous return on tissue oxygenation in a porcine model of acute limb ischemia.

open access: yesPLoS ONE, 2020
IntroductionA sufficient oxygen supply to ischemic limb tissue is the most important requirement for wound healing and limb salvage. We investigated whether partial venous occlusion in the common iliac vein (CIV) causes a further increase of venous ...
Wonho Kim   +5 more
doaj   +1 more source

On the Gierer-Meinhardt System with Saturation [PDF]

open access: yes, 2004
We consider the following shadow Gierer-Meinhardt system with saturation: \left\{\begin{array}{l} A_t=\epsilon^2 \Delta A -A + \frac{A^2}{ \xi (1+k A^2)} \ \ \mbox{in} \ \Omega \times (0, \infty),\\ \tau \xi_t= -\xi +\frac{1}{|\Omega|} \int_\Om A^2 ...
Wei, J, Winter, M
core   +1 more source

Ferromagnetism enhancement by increasing oxygen vacancies in Co-doped ZnO thin films

open access: yesAIP Advances, 2022
In the reported study, thin films of ZnO doped with 10 wt. % Co were fabricated by pulsed laser deposition under different oxygen partial pressures. The results of x-ray photoelectron spectroscopy show that the valence state of the Co ions is 2+ and that
Kota Udagawa   +2 more
doaj   +1 more source

Cardiopulmonary exercise testing in adults with congenital heart disease: Prognostic role in cyanotic patients

open access: yesInternational Journal of Cardiology Congenital Heart Disease, 2021
Introduction: There are few and conflicting data concerning cardiopulmonary exercise testing (CPET) in cyanotic congenital heart disease (CHD) in whom the ventilation patterns could be affected.
Tânia B. Mano   +10 more
doaj   +1 more source

On the low fermionic eigenmode dominance in QCD on the lattice [PDF]

open access: yes, 2001
We demonstrate the utility of a spectral approximation to fermion loop operators using low-lying eigenmodes of the hermitian Dirac-Wilson matrix, Q. The investigation is based on a total of 400 full QCD vacuum configurations, with two degenerate flavors ...
A. A. Khan   +32 more
core   +2 more sources

Hybrid Attitude Saturation and Fault-Tolerant Control for Rigid Spacecraft without Unwinding

open access: yesMathematics, 2023
This paper tackles the saturation and fault-tolerant attitude tracking problem without unwinding for rigid spacecraft with external disturbances and partial loss of actuator effectiveness faults.
Jun Ma, Zeng Wang, Chang Wang
doaj   +1 more source

Efeito da pré-molhagem do agregado nas propriedades das argamassas com agregado reciclado deconcreto e agregado leve [PDF]

open access: yes, 2019
This paper examines the suitability of partially replacing natural aggregate, sand, (NA) with recycled concrete aggregate (RCA) or lightweight aggregate (LWA) in mortars, under the hypothesis that pre-wetting aggregates would produce improvement in ...
Aponte Hernández, Diego Fernando   +3 more
core   +4 more sources

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