Materials Literature
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OBJECTIVE: We describe the development, evaluation, and comparison of colloidal gold-loaded, poly(d,l-lactic-co-glycolic acid)-based nanoparticles containing anti-acquired immunodeficiency syndrome drug stavudine and uptake of these nanoparticles by macrophages in vitro. METHODS: WE USED THE FOLLOWING METHODS IN THIS…
This study provides a theoretical evaluation of the photophysical behavior of zinc phthalocyanine (ZnPc) using density functional theory (DFT) and its time-dependent (TD-DFT) approach, based on the combination of the B3LYP hybrid functional and the 6-311+G(d,p) basis set. The influence of solvation was estimated using…
Abstract Natural polymers are produced by living organisms, e.g. plants, animals, microorganisms. Natural polymer materials have gained increasing attention due to their high strength and stiffness combined with carbon neutral, biocompatibility, biodegradability, renewability and sustainability. However, due to the st…
We investigate total ionizing dose (TID) effects in graphene field effect transistors comprised of chemical vapor deposition grown graphene transferred onto trimethylsiloxy(TMS)-passivated SiO2Si substrates.TIDexposure with a positive gate bias increases the concentration of positive oxide trapped charges near the SiO…
For concrete target penetration and/or perforation simulation, the Holmquist–Johnson–Cook (HJC) material model is widely used as concrete material model. However, the strain rate expression of the model has failed to explain the sudden increase in concrete strength at high strain rates. The pressure-volume relationshi…
The electronic structures and optical properties of intrinsic β-Ga 2 O 3 and Zn-doped β-Ga 2 O 3 are investigated by first-principles calculations. The analysis about the thermal stability shows that Zn-doped β-Ga 2 O 3 remains stable. The Zn doping does not change the basic electronic structure of β-Ga 2 O 3 , but on…
Abstract Mechanisms for the incorporation of carbonate into minerals of the apatite group have been explored in both the geological and medical literature. An important problem with respect to biological apatite, which requires further clarification, is the hydroxyl content of the carbonated apatite of bone. Recent st…
Gold nanorods, as an emerging noble metal nanomaterial with unique properties, have become the new exciting focus of theoretical and experimental studies in the past few years. The structure and function of gold nanorods, especially their biocompatibility, optical property, and photothermal effects, have been attracti…
Nanotechnology is rapidly evolving and dramatically changing the paradigms of drug delivery. The small sizes, unique chemical properties, large surface areas, structural diversity and multifunctionality of nanoparticles prove to be greatly advantageous for combating notoriously therapeutically evasive diseases such as…
In order to improve the through-thickness conductivity of few-layer graphene (FLG) in buckypaper, a unique synergistic effect of FLG and carbon nanofiber (CNF) was explored for the buckypaper enabled shape-memory polymer (SMP) composite. In the FLG/CNF buckypaper, FLGs were used to significantly improve the electrical…
BACKGROUND: Nanomedicine has the potential to revolutionize medicine and help clinicians to treat cardiovascular disease through the improvement of stents. Advanced nanomaterials and tools for monitoring cell-material interactions will aid in inhibiting stent thrombosis. Although titanium boron nitride (TiBN), titaniu…
BACKGROUND: CuO-TiO2 nanosheets (NSs), a kind of nanomaterials is one of the most attracting class of transition doped semiconductor materials due to its interesting and important optical, electrical, and structural properties and has many technical applications, such as in metal ions detection, photocatalysis, Chemi-…
Preparation, piezoelectric, and dielectric properties were investigated in a new Bi-based piezoelectric material of (1−x)Bi(Ni1/2Hf1/2)O3-xPbTiO3. The system can form a pure perovskite structure with the morphotropic phase boundary locating at x = 0.62, separating the rhombohedral and tetragonal phases. It is interest…
An instrumented and highly integrated biaxial stretching system was designed and constructed to obtain true stress, true strain, and optical behavior of polymeric films during biaxial stretching. With programmable drive motors, any form of temporally varying biaxial deformation profiles, including linear, exponential,…
Secondary structure elements often mediate protein-protein interactions. Despite their low abundance in folded proteins, polyproline II (PPII) and its variant, the triple helix, are frequently involved in protein-protein interactions, likely due to their peculiar propensity to be solvent-exposed. We here review the ro…
Phase change memory (PCRAM) is an ideal embedded memory due to its simple BEOL process and low voltage operation. Industrial and automotive applications of PCRAM, however, have not been realized because of poor high temperature properties of the conventional Ge2Sb2Te5phase-change material [1–3]. We have previously rep…
To improve the pharmacokinetics and stability of recombinant human erythropoietin (rhEPO), rhEPO was successfully formulated into poly(ethylene glycol)-poly(d,l-lactide) (PEG-PLA) di-block copolymeric micelles at diameters ranging from 60 to 200 nm with narrow polydispersity indices (PDIs; PDI < 0.3) and trace amount…
In this work, we used carbon nanotubes (CNTs) as a support for synthesis, size control, and morphology of magnesium oxide using the precipitation method. The morphology of MgO nanoparticles varies by changing the weight percent of carbon nanotubes in the solution. Experimental results indicate that, at optimum conditi…
Doxorubicin-loaded micelles were prepared from a copolymer comprising cholic acid (CA) and polyethyleneimine (PEI) for the delivery of antitumor drugs. The CA-PEI copolymer was synthesized via pairing mediated by N,N'-dicyclohexylcarbodiimide and N-hydroxysuccinimide using dichloromethane as a solvent. Fourier transfo…
Many efforts in these last years have dedicated in the development of new drugs due to an increase of microbial organisms resistant to multiple antibiotics, and silver nanoparticles appears as a novel antimicrobial agent. The aim of our work was to evaluate the in vitro and in vivo antileishmanial activity of the silv…