Results: 23

Remineralizing potential of a fluoride varnish modified by bioactive nanoparticles

Braz. dent. sci; 27 (2), 2024
Objective: Evaluate a fluoride varnish modified by nanostructures with the bioactive qualities of silica (SiO2) and niobium pentoxide (Nb2O5), testing its remineralizing potential by surface hardness (SH) and energy-dispersive X-ray spectroscopy (EDX). Material and Methods: Bovine enamel specimens (6×...

Determination of Shear Bond Strength of Nanocomposite to Porcelain and Metal Alloy

Abstract Objective: To compare porcelain and metal repair done with both nanocomposite and conventional composite. Material and Methods: A total of 30 cylinders were fabricated from Porcelain (I), Porcelain fused to metal (II), and metal (III) substrate each. Control group (A) was bonded with conventio...

Challenges in the use of nanostructures as carriers of nucleic acids in clinical practice

ABSTRACT The delivery of nucleic acids to cells is considered a crucial step for the success of genetic modifications aimed at therapeutic purposes or production of genetically modified animals. In this context, nanotechnology is one of the most promising fields of science, with the potential to solve se...

Simple synthesis of photoluminescent carbon dots from a marine polysaccharide found in shark cartilage

BACKGROUND: For more than a decade, water-soluble, eco-friendly, biocompatible, and low-toxicity fluorescent nanomaterials have received considerable attention for their numerous in vivo and in vitro applications in biomedical imaging, disease diagnostics, and environmental monitoring. Owing to their tun...

An efficient method of Yarrowia lipolytica immobilization using oil- and emulsion-modified bacterial cellulose carriers

Background: Yarrowia lipolytica is a nonconventional, dimorphic yeast with multiple biotechnological applications. Considering the size of Y. lipolytica cells and a plethora of its morphological forms (spherical cells or hyphae and pseudohyphae), it is highly difficult to select a suitable carrier for th...

Understanding the Internet of Nano Things: overview, trends, and challenges

E-Cienc. inf; 9 (1), 2019
ABSTRACT Over the years, technological advancements have led to rapid growth of smart environments (offices, homes, cities, etc.). The increase of intelligent environments suggests the interconnectivity of applications and the use of the Internet. For this reason, arise what is known as the Internet of T...

Varying the vegetative and morphological traits of Thymus kotschyanus L. submitted to potassium silicate nanoparticles, superabsorbent hydrogel, effective microorganisms, and animal manure

Biosci. j. (Online); 35 (1), 2019
To study the effects of some new facilitators on the vegetative and morphological traits of Thymus kotschyanus, nine treatments were tested in the experimental rangeland field at the University of Mohaghegh Ardabili, Ardabil, Iran. Treatments included control, potassium silicate nan...

Influence of the geometry of nanostructured hydroxyapatite and alginate composites in the initial phase of bone repair

Acta cir. bras; 34 (2), 2019
Abstract Purpose: To analyze, histomorphologically, the influence of the geometry of nanostructured hydroxyapatite and alginate (HAn/Alg) composites in the initial phase of the bone repair. Methods: Fifteen rats were distributed to three groups: MiHA - bone defect filled with HAn/Alg microspheres; GrHA...

Recent advances in layered double hydroxides applied to photoprotection

Einstein (Säo Paulo); 17 (1), 2019
ABSTRACT Layered double hydroxides have received more attention from researchers due to their range of applications, ease of synthesis and low cost of production. With broader knowledge about solar radiation effects on the body, the use of sunscreens has become even more important. The ability of some na...

Incorporation of the antitumor drug miltefosine into polymeric micelles

Miltefosine (hexadecylphosphocholine, HePC), a synthetic antitumor designed from natural phospholipids, is clinically approved for cutaneous metastases of breast cancer and cutaneous lymphoma. This drug acts mainly at cellular membrane level, where it accumulates and interferes with lipid metabolism and ...