Results 21 to 30 of about 5,591 (184)

Fundamentos y analogías para entender mejor la espectroscopía de RMN

Educación Química, 2022
La Resonancia Magnética Nuclear (RMN) es una técnica espectroscópica utilizada en diversas áreas de las ciencias químicas, biológicas y de la salud.
Mariel Anahí García González, Ernesto Sánchez Mendonza, Noemí Herminia Waksman Minsky, Alma L Saucedo   +3 more
doaj   +1 more source

Remote magnetic catheter navigation versus conventional ablation in atrial fibrillation ablation: Fluoroscopy reduction

Journal of Arrhythmia, 2017
Background: Percutaneous transcatheter radiofrequency ablation of atrial fibrillation with remote controlled magnetic navigation (RMN) has been shown to reduce radiation exposure to patients and physicians compared with conventional manual (MAN) ablation
Paul Chun Yih Lim, Joseph Jia Hong Toh, Julian Kenrick Xing Yuan Loh, Edward Chun Yi Lee, Daniel Thuan Tee Chong, Boon Yew Tan, Kah Leng Ho, Chi Keong Ching, Wee Siong Teo   +8 more
doaj   +1 more source

Midazolam-ketamina-propofol vs. propofol para sedación en resonancia magnética nuclear. Costos y beneficios

Revista Cubana de Anestesiología y Reanimación, 2007
Introducción: En los últimos años ha cobrado interés los procedimientos diagnósticos invasivos y radiológicos en pacientes pediátricos.Objetivos: Identificar las ventajas de la asociación intravenosa de midazolam-ketamina-propofol para la sedación de ...
Sara Fernández Abreu, Víctor Navarrete Zuazo, M. Beatriz Vallongo Menéndez, Martha S. López Rodríguez, Marietta de la Barrera Fernández, Lucas Cordoví de Armas   +5 more
doaj   +2 more sources

In‐Process Magnetization for 3D Printing of Magnetorheological Elastomer with Heterogeneous Magnetic Profile for Anisotropic Actuation

Advanced Science, EarlyView.
Fully programmable, in‐process 3D magnetization integrated with multi‐material printing enables soft magnetic systems with precise actuation and sensing. Discrete and continuous magnetization profiles drive bending, morphing, and locomotion, demonstrated through strain‐sensing elements, dragonfly‐inspired wings, octopus‐like tentacles, and a serpentine
Phillip Glass, David Hassouna, Udena Epitawala Arachchige, Hyeon Yun Jeong, Sung Hyun Park, Daeha Joung   +5 more
wiley   +1 more source

Atrial Fibrillation Ablation Using Robotic Magnetic Navigation Reduces the Incidence of Silent Cerebral Embolism

Frontiers in Cardiovascular Medicine, 2021
Background: The incidence of silent cerebral embolisms (SCEs) has been documented after pulmonary vein isolation using different ablation technologies; however, it is unreported in patients undergoing with atrial fibrillation (AF) ablation using Robotic ...
Jie Zheng, Meng Wang, Qun-feng Tang, Feng Xue, Ku-lin Li, Shi-peng Dang, Xiao-yu Liu, Xiao-xi Zhao, Chang-ying Zhang, Zhi-ming Yu, Bing Han, Ting-bo Jiang, Yan Yao, Ru-Xing Wang   +13 more
doaj   +1 more source

A Unifying Approach to Self‐Organizing Systems Interacting via Conservation Laws

Advanced Intelligent Discovery, EarlyView.
The article develops a unified way to model and analyze self‐organizing systems whose interactions are constrained by conservation laws. It represents physical/biological/engineered networks as graphs and builds projection operators (from incidence/cycle structure) that enforce those constraints and decompose network variables into constrained versus ...
F. Barrows, G. Zhang, S. Anand, Z. Chen, J. Lin, A. Desai, S. Martiniani, F. Caravelli   +7 more
wiley   +1 more source

Ressonância Magnética Nuclear de Próton como Ferramenta Analítica para Avaliação da Conversão em Ésteres Metílicos

RCT: Revista de Ciência e Tecnologia
O objetivo do trabalho foi produzir biodiesel a partir dos óleos de soja, babaçu e fritura, utilizando duas metodologias, e avaliar o uso da Ressonância Magnética Nuclear de próton como ferramenta para avaliação da conversão em ésteres metílicos.
Luana B. Damasceno, Jessica J. P. Nascimento, Emanuelle F. Braga, Débora H. A. Brito, Igor M. Nascimento, Tassio L. Nascimento, Luciana M. Bertini, Maria Alexsandra de Sousa Rios   +7 more
doaj   +1 more source

Estudio computacional de RMN del acetaminofén y sus precursores químicos

infoANALITÍCA, 2018
En este artículo, se presenta un estudio espectroscópico computacional de Resonancia Magnética Nuclear del acetaminofén y sus principales precursores químicos: el 4-nitrofenol y el 4-aminofenol.
Sebastian Cuesta, Shirley Morocho, Lorena Meneses   +2 more
doaj   +1 more source

Remoción de sales de cobre por sodalitas recubiertas con hidróxidos doble laminares

Tecnología y ciencias del agua
Se sintetizaron zeolitas tipo sodalita a partir de silicio y aluminio posconsumo, las cuales se recubrieron con el hidróxido doble laminar (HDL) con una relación molar Mg2+ / Al3+ = 2, que se formaron por el método de coprecipitación a baja saturación ...
Andrea P. Aparicio, José H. Quintana-Mendoza, J. A. Henao   +2 more
doaj   +1 more source

Long‐Time Thermal Aging of Perfluoroalkoxy Polymers for Electrical Insulation: Structural and Physical Properties Evolutions

Journal of Applied Polymer Science, EarlyView.
This work focuses on the investigation of the influence of a long‐time exposition to accelerated thermal aging on the physicochemical structure and properties of PFA. Results show a decrease in the melting temperature and crystal ratio due to chemical aging.
Victor Henri, Julien Chedaille, Pierre Henrard, Eric Dantras   +3 more
wiley   +1 more source