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Irreversibility in an ideal fluid
(2014-10)
When a real fluid is expelled quickly from a tube, it forms a jet separated from the surrounding fluid by a thin, turbulent layer. On the other hand, when the same fluid is sucked into the tube, it comes in from all ...
Do Magnetic Fields Destroy Black Hole Accretion Disk g-Modes?
(2015-08-04)
Diskoseismology, the theoretical study of normal-mode oscillations in geometrically thin, optically thick accretion disks, is a strong candidate for explaining some quasi-periodic oscillations in the power spectra of many ...
Sesión "Medicina nuclear"
"Nuclear medicine" session
(2017-01)
En la sesión dedicada a la Medicina Nuclear (MN) se identificaron los cinco aspectos que se consideran más problemáticos
en la protección radiológica en MN. Estos hacen referencia a:
1. Garantizar que la dosis administrada ...
The early rainy season in Central America: the role of thetropical North Atlantic SSTs
(2016)
We explored the relationship between the precipitation anomalies during May to June as the first peak of the rainy season in the Pacific slope of Central America, and sea surface temperature (SST) fluctuations in the ...
The mechanical career of Councillor Orffyreus, confidence man
(2013-05)
In the early 18th century, J. E. E. Bessler, known as Orffyreus, constructed several wheels that he claimed could keep turning forever, powered only by gravity. He never revealed the details of his invention, but he ...
Negative thermal expansion near two structural quantum phase transitions Connor
(2017-12-18)
Recent experimental work has revealed that the unusually strong, isotropic structural negative thermal
expansion in cubic perovskite ionic insulator ScF3 occurs in excited states above a ground state tuned very near a ...
Cosmological Exact Solutions Set of a Perfect Fluid in an Anisotropic Space-Time in Petrov Type D
(2016-06)
In this document a set of exact solutions is obtained by using the model of a perfect fluid on an homogeneous and anisotropic space-time that belongs to (Local Rotational Symmetry) Petrov’s type D. This solutions represent ...
Determination of the dosimetric characteristics of a new polymer-encapsulated, elongated, 103Pd brachytherapy source using Monte Carlo calculations
(2009)
Purpose: To use Monte Carlo calculations to determine the dosimetric characteristics of CivaString, a new polymer-encapsulated, elongated, 103Pd brachytherapy source made by Civatech Oncology for prostate implants. This ...
Pressure dependence of ferroelectric quantum critical fluctuation
(2019-12-13)
Phase transitions to a long-range-ordered state driven by a softened phonon mode are ubiquitous across condensed matter physics, but the evolution of such a mode as the system is tuned to or from the transition has never ...
OpenDose: Open access resources for nuclear medicine dosimetry
(2020)
Radiopharmaceutical dosimetry depends on the localization in
space and time of radioactive sources and requires the estimation
of the amount of energy emitted by the sources deposited within
targets. In particular, when ...