为您找到"
microparticle
"相关结果约100,000,000个
Microparticle of spherical shape without membrane or any distinct outer layer. Note: The absence of outer layer forming a distinct phase is important to distinguish microspheres from microcapsules because it leads to first-order diffusion phenomena, whereas diffusion is zero order in the case of microcapsules.
Microparticle is a term used to describe spherical particles between 1 and 1000 μm in diameter. Just like micro- and nanofibers, the small size of microparticles has an advantage over larger, macroscale particles due to the larger surface-to-volume ratio. This is especially significant for microparticles with a porous structure.
In vitro tests of microparticle capture by macrophage and anti-amastigote cytotoxicity showed that CH8 microencapsulation improved its safety and maintained its high selectivity index due to the direct action of intracellularly released drug rather than macrophage activation.
Natural sources include pollen, dust particles, volcanic ash, and various biological cells. Human-made sources are diverse and contribute significantly to environmental microparticle loads. Industrial processes, like combustion, release particulate matter into the air. Vehicle emissions, particularly from tire wear, are a substantial source.
Microparticles represent a heterogeneous population of vesicles with a diameter of 100 to 1000 nm that are released by budding of the plasma membrane and express antigens specific of their parental cells. Although microparticle formation represents a physiological phenomenon, a multitude of pathologies are associated with a considerable increase in circulating microparticles, including ...
The meaning of MICROPARTICLE is a very small particle; especially : one that is microscopic in size.
This membrane also plays a role in determining the microparticle's function, as various receptors can be expressed on their surface, allowing them to interact with recipient cells. Functions of Microparticles Microparticles serve a multitude of functions in biological systems, including:
Learn about the evolution, significance, and formulation factors of microparticles, microspheres, and microcapsules for advanced drug delivery. Explore the different structures, processes, drug release mechanisms, and examples of multiparticulate dosage forms.
Microparticles are particles between 0.1 and 100 μm in size. Commercially available microparticles are available in a wide variety of materials, including ceramics, glass, polymers, and metals. Microparticles encountered in daily life include pollen, sand, dust, flour, and powdered sugar.
Learn the comprehensive definition of 'microparticle,' its etymology, related terms, synonyms, antonyms, usage examples, and significant facts about microparticles in various scientific fields.