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On retrograde orbits, resonances and stability
(2016-10-01)
We start by reviewing our previous work on retrograde orbital configurations and on modeling and identifying retrograde resonances. Then, we present new results regarding the enhanced stability of retrograde configurations ...
Ability of different methods to fill retrograde cavities with MTA.
(2012)
The Mineral Trioxide Aggregate (MTA) has excellent biological property. However, its consistency makes it difficult to be inserted into retrograde cavities. Objective:To evaluate the ability of different methods to fill ...
Evaluation of retrograded starch as excipient for controlled release matrix tablets
(2017-08-01)
High amylose starch (HAS) was retrograded by two different methods. The physicochemical properties of the retrograded materials were evaluated and structural changes were highlighted. Micromeritics properties were demonstrated ...
Three-dimensional retrograde periodic orbits of asteroids moving in mean motion resonances with Jupiter
(2022-01-01)
We study the dynamics of interior mean motion resonances of first, second and third order with Jupiter using the model of the restricted three-body problem with the Sun and Jupiter as primaries and we focus on asteroids ...
A hands-on exploration of the retrograde motion of Mars as seen from the Earth
(IOP Publishing, 2013-07)
In this paper, we propose a set of activities based on the use of a celestial simulator to gain insights into the retrograde motion of Mars as seen from the Earth. These activities provide a useful link between the ...
Development and characterization of cross-linked gellan gum and retrograded starch blend hydrogels for drug delivery applications
(2017-01-01)
The retrogradation of high amylose starch (5% or 10%), by isothermal cycles at 4 °C (method 1) or by alternating thermal cycles (method 2) was efficient and promoted important structural modifications. Hydrogels of gellan ...
A numerical investigation of coorbital stability and libration in three dimensions
(Springer, 2016-05-01)
Motivated by the dynamics of resonance capture, we study numerically the coorbital resonance for 0 <= I <= 180 degrees inclination in the circular restricted three-body problem. We examine the similarities and differences ...
Test for the detection of the retrograde melting phenomenon in computed solid-fluid equilibria of binary asymmetric systems
(Elsevier Science, 2014-11-01)
The phenomenon of retrograde melting at constanttemperature takes place when a solid phase is melted, or made to disappear, upon compression. Analogously, retrograde melting at constant pressure happens when a solid phase ...
Cellulose nanofibers improve the performance of retrograded starch/pectin microparticles for colon-specific delivery of 5-ASA
(2021-09-01)
Cellulose nanofibers (CNF) were employed as the nanoreinforcement of a retrograded starch/pectin (RS/P) excipient to optimize its colon-specific properties. Although starch retrogra-dation ranged from 32 to 73%, CNF addition ...