Nanoparticle

Astaxanthin (AST) and pycnogenol (PYC) are natural bioactive compounds commonly used in pharmaceuticals and functional foods due to their highly antioxidant activity and potential health benefits. However, the widespread application of astaxanthin is hindered by its poor water solubility and highly unsaturated structure. In this study, nanoparticles co-delivering astaxanthin and pycnogenol (NAP) were fabricated to enhance the dispersibility, stability, and bioavailability of astaxanthin.

9p vifilm 11-10-2024 2 1   Download

Silver nanoparticles (Ag NPs) with a size of around 9 nm were fabricated and quantified through fluorescence quenching of rhodamine B (RhB). A series of solutions composed of RhB with various concentrations of Ag NPs ranging from 0.09 pM to 0.98 pM were prepared, and optical properties were investigated by absorption and fluorescence spectroscopies.

8p viengfa 28-10-2024 5 2   Download

Silver nanoparticles (Ag NPs) were synthesized and characterized by transmission electron microscopy (TEM), X-ray powder diffraction (XRD), and absorption spectroscopy. Using Debye-Scherrer’s formula and the result of the XRD spectrum, the size of the Ag NPs was estimated at approximately 8 nm.

7p viengfa 28-10-2024 1 1   Download

ZnO nanostructures have been fabricated by annealing zinc acetate dihydrate at different temperatures (Tan). Thermogravimetric analysis, and XRD and Raman studies indicate ZnO crystals formed at above 250oC.

15p vimitsuki 30-03-2025 8 0   Download

This study outlines a nanotechnology-based method to enhance its solubility and absorption of rosuvastatin. The process entails the formulation of rosuvastatin nanoparticles through a combination of precipitation and ultrasonic techniques. Rosuvastatin is initially dissolved in an organic solvent, such as acetone, and subsequently mixed with an aqueous phase containing stabilizers like Poloxamer 407 or PVP to induce precipitation. Ultrasound reduces particle size to 50-200 nm.

10p tuongmotranh 18-03-2025 3 1   Download

Infrared decoy flares are one of the effective measures used to protect aircraft against current infrared-guided missiles. This article presents studies of the effects of nanoFe2O3 and graphene on the burning and radiance characteristics of the MTV pyrotechnic compositions.

6p viyoko 01-10-2024 3 0   Download

In this study, spinel ferrite nanoparticles CoFe2-xLaxO4 (x = 0, 0.025, and 0.05) were successfully synthesized via a simple co-precipitation method using a 5% NaOH solution as a precipitating agent. The physicochemical properties of the materials, annealed at 850 °C for one hour, were characterized using powder X-ray diffraction (PXRD), energy-dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), and vibrating-sample magnetometry (VSM) at room temperature.

10p viling 11-10-2024 3 1   Download

In this work, ZnFe2O4 nanoparticles were synthesized by hydrothermal method while the hummer method was used to synthesize GO nanosheet. GO/ZnFe2O4 nanocomposites (GO/ZFO) were prepared by mixing GO with ZnFe2O4 in mass ratio of 1:99, respectively.

8p viengfa 28-10-2024 8 2   Download

The basic characteristics of sensor were investigated, and these experimental data were used for a machine learning. The results of the model validation proved to be a reliable way between the experiment and prediction values.

10p viengfa 28-10-2024 3 2   Download

In the trend of using natural-resource substances in current pharmaceutical industry, alginate (ALG) film was used to coat tablets. To further develop ALG film-coating, solid lipid nanoparticles of cetearyl alcohol (ACS) or glycerol monostearate (GMS) were added in the coating formulation, applying to the diclofenac sodium (Na-D) pellet.

11p vihyuga 04-03-2025 2 1   Download

Hydrogels have gained significant attention in various applications, including agriculture, owing to their exclusive characteristics, such as great water retention and controlled delivery of fertilizers and agrochemicals. In this study, a nanocomposite hydrogel bead with exceptional slow-release capacity for urea fertilizer has been fabricated by appropriately combining urea, silica nanoparticles, and chitosan.

12p viinuzuka 28-02-2025 4 1   Download

In this study, we have successfully synthesized ZnO nanoparticles (ZnO NPs) using co-precipitation and hydrothermal methods. ZnO NPs were fabricated by co-precipitation for spherical shape, while the hydrothermal method was for rod-shaped morphology.

6p viinuzuka 28-02-2025 2 1   Download

The information from the library proved that bimetallic catalysts, with their intrinsic alloy synergism, are generally better than their mono-metallic counterparts and thereby suggested some ideas to engineer more powerful and economic alternatives substituting for the current conventional catalysts.

12p tuetuebinhan000 23-01-2025 7 2   Download

The use of natural-origin active compounds in disease treatment is currently a prevailing trend. Mangiferin, a major component found in mangoes, is present in relatively high proportions. However, mangiferin's disadvantages include low solubility and poor permeability. There are numerous methods available to improve solubility and permeability, among which selfassembly is noteworthy.

10p vinara 11-01-2025 3 1   Download

Therefore, this study aimed to develop and characterize solid lipid nanoparticles (SLNs) containing tinidazole (TNZ-SLNs) oriented to be incorporated into the gel to increase the penetration ability and prolong drug retention time in periodontal tissues.

8p viharuno 03-01-2025 3 2   Download

Periodontitis is a chronic bacterial infection destroying tooth-supporting tissues. Like metronidazole, tinidazole (TNZ) is also effective in treating periodontitis. This study aimed to formulate and optimize TNZ nanoparticles and evaluate their physicochemical properties.

9p viharuno 03-01-2025 3 2   Download

Ung thư vú là bệnh ác tính phổ biến nhất và luôn là mối quan tâm lớn về sức khỏe của phụ nữ ở Việt Nam và trên toàn cầu. Bài viết nghiên cứu một số đặc điểm lâm sàng và giải phẫu bệnh ung thư vú di căn; Đánh giá hiệu quả và độc tính của hóa trị nab-paclitaxel so với paclitaxel.

8p viuchiha 03-01-2025 7 2   Download

Normally, any ferromagnetic or ferrimagnetic material undergoes a transition to a paramagnetic state above its Curie temperature. Superparamagnetism is different from this standard transition since it occurs below the Curie temperature of the material. Superparamagnetism occurs in nanoparticles which are single domain. This is possible when their diameter is below 3–50 nm, depending on the materials.

33p thinh3m 28-03-2013 68 5   Download

This paper was performed to evaluate the photothermal effect of pure gold nanoparticles (Au NPs) prepared by electrochemical method at different voltages, under laser irradiation in the safe wavelength range. The formation, morphological, and structural properties of Au NPs were analyzed by UV-Vis absorption spectroscopy, transmission electron microscopy (TEM), and X-ray diffraction (XRD).

11p viprimi 16-12-2024 2 1   Download

This study investigated the in vitro effects of ZnO NP and chemical UV filters commonly used sunscreens on the function of immortalised and primary skin cells. ZnO particulates (30 nm, 80 nm and 200 nm) were compared to the chemical UV filters: butylmethoxydibenzoylmethane (BMDBM) ethylhexylmethoxycinnamate (EHMC), ethylhexylsalicylate (EHS), homomenthylsalicylate (HMS) and 4-methylbenzylidenecamphor (MBC). Human epidermal keratinocytes (NHEK), epidermal melanocytes (NHEM), dermal fibroblasts (NHDF) and the immortalised keratinocyte HaCaT cell line were used in this study.

324p runthenight05 01-03-2023 14 3   Download