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Fabrication and characterization of 3D-printed polymeric-based scaffold coated with bioceramic and naringin for a potential use in dental pulp regeneration (in vitro study).
Int Endod J
January 2025
Restorative and Aesthetic Dentistry Department, College of Dentistry, University of Baghdad, Baghdad, Iraq.
Aim: 3D-printed scaffolds loaded with healing directed agents could be employed for better treatment outcome in regenerative dentistry. The aim of this study was to fabricate and characterize simple 3D-printed poly lactic acid (PLA) scaffolds coated with nanoHydroxyapatite (nHA), Naringin (NAR), or their combination, and testing their morphological, chemical, mechanical, antibacterial, biocompatible and bioactive properties.
Methodology: Two variants pore sizes, 300 and 700 μm, of 3D-printed PLA disc scaffolds measuring (10 × 1 mm) were fabricated.
NEMS generated electromechanical frequency combs.
Microsyst Nanoeng
January 2025
Department of Systems Design Engineering, University of Waterloo, Waterloo, ON, N2L 3G1, Canada.
This paper presents a novel technique for low-power generation of frequency combs (FC) over a wide frequency range. It leverages modal interactions between electrical and mechanical resonators in electrostatic NEMS operating in air to provide a simple architecture for FC generators. A biased voltage signal drives the electrical resonator at resonance which is set to match an integer submultiple of twice the mechanical resonator's resonance.
View Article and Find Full Text PDFDevelopment and validation of a rapid and accurate ultra performance liquid chromatography-photodiode array method for concurrent quantification of thirty-two polyphenols in edible fruit of Cordia myxa Linn.
J Chromatogr A
December 2024
Chemical Technology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur (Himachal Pradesh), 176061, India; Academy of Scientific and Innovative Research, (AcSIR), Ghaziabad, 201002, India. Electronic address:
The aim of current work was to develop a novel, simple, sensitive, and reliable method for screening and quantification of thirty-two polyphenol compounds from Cordia myxa (C. myxa) using Ultra Performance Liquid Chromatography Photodiode Array detector (UPLC-PDA). With the help of the quaternary solvent manager and a comparison study of seven different columns packed with silica particles that are less than two micron thick (1.
View Article and Find Full Text PDF[Neighborhood characteristics in Belo Horizonte, Minas Gerais State, Brazil: an intraurban analysis using systematic social observation method].
Cad Saude Publica
January 2025
Observatório de Saúde Urbana de Belo Horizonte, Universidade Federal de Minas Gerais, Belo Horizonte, Brasil.
Systematic social observation (SSO) is an objective method of measuring the neighborhood physical and social characteristics. This study aimed to build intraurban indicators using the SSO method and compare them between two slums and their surroundings in a Brazilian capital. The simple indicators were calculated using the ratio estimator method, and grouped into domains.
View Article and Find Full Text PDFAcrobatics at the insect scale: A durable, precise, and agile micro-aerial robot.
Sci Robot
January 2025
Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA.
Aerial insects are exceptionally agile and precise owing to their small size and fast neuromotor control. They perform impressive acrobatic maneuvers when evading predators, recovering from wind gust, or landing on moving objects. Flapping-wing propulsion is advantageous for flight agility because it can generate large changes in instantaneous forces and torques.
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