Publications by authors named "A A Maldonado"
Background: The articular origin of intraneural ganglion cysts has been previously described and well supported, except for the median nerve at the level of the elbow.
Observations: The authors present a patient with a median intraneural ganglion cyst at the elbow region and magnetic resonance imaging (MRI) evidence of a joint connection to the proximal radioulnar joint. A 63-year-old man presented with thumb flexion weakness and dysesthesias in the thumb, index, and middle fingers.
Article Synopsis
- Precise identification of nerve fascicles is crucial for certain surgeries on peripheral nerves, with bipolar nerve stimulation preferred, but many still use handheld monopolar stimulators.
- The study presents a new technique for monopolar stimulation, where both the anode and cathode are placed on the same nerve fascicle to enhance specificity.
- Two surgical cases demonstrated that this modified method allowed for better selection of nerve fascicles, resulting in successful outcomes without unexpected complications.
Shape-dependent CO chemisorption on Pt nanocluster deposited on reduced TiO(110).
J Mol Graph Model
January 2025
This article delves into the impact of nanoparticle shape on CO chemisorption and the reactivity of Pt nanocatalysts supported on reduced TiO(110). Distinct reactivity in carbon monoxide adsorption is observed among nanoparticles, all composed of 13 platinum atoms but varying in shape. The calculated formation and CO adsorption energies are correlated to the electronic properties of the system and the oxidation states of the Pt atoms involved.
View Article and Find Full Text PDFWe describe a new species of the genus (Nematoda: Trichostrongylina) in the small intestine of (Rodentia: Sigmodontinae) found in Itatiaia National Park (Parque Nacional do Itatiaia, PNI), state of Rio de Janeiro, Brazil. The new species can be distinguished between the other two species previously described by the following morphological characteristics: pattern of the rays from the caudal bursa rays in males and the spherical-shaped appendage in the female. Additionally, we provide molecular genetic data from the new species.
View Article and Find Full Text PDF