A smartphone is used as a colorimeter. The performance characterization for colorimetry is presented using both the built-in camera and a clip-on dispersive grating. Certified colorimetric samples provided by Labsphere are considered as test samples.
View Article and Find Full Text PDFUnsaturated fatty acids are renowned for their beneficial effects on the cardiovascular system. The high content of unsaturated fatty acids is a benefit of vegetable fats and an important nutraceutical indicator. The ability to quickly check fat composition of an edible oil could be advantageous for both consumers and retailers.
View Article and Find Full Text PDFNanomaterials (Basel)
August 2020
Melanins are a group of dark insoluble pigments found widespread in nature. In mammals, the brown-black eumelanins and the reddish-yellow pheomelanins are the main determinants of skin, hair, and eye pigmentation and play a significant role in photoprotection as well as in many biological functions ensuring homeostasis. Due to their broad-spectrum light absorption, radical scavenging, electric conductivity, and paramagnetic behavior, eumelanins are widely studied in the biomedical field.
View Article and Find Full Text PDFUnlabelled: Polymethylmethacrylate core-shell fluorescent nanoparticles promote, in human lung A549 cancer cells, the internalization of a molecular beacon (MB) specific for survivin mRNA, an anti-apoptotic protein overexpressed in cancer cells.
Aims: To design an effective drug delivery system, the knowledge of the uptake mechanism and of the nanoparticles (NPs) and MB fate is required.
Materials And Methods And Key Findings: Experiments with dextran as marker for endocytosis showed that in the presence of NPs the number of endocytic vesicles per cell doubled and their mean size significantly (p < 0.