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e. The health and safety hazards of nanomaterials include the potential toxicity of various types of nanomaterials, as well as fire and dust explosion hazards. Because nanotechnology is a recent development, the health and safety effects of exposures to nanomaterials, and what levels of exposure may be acceptable, are subjects of ongoing research.
Drug-loaded polymeric micelle formed from self-assembly of amphiphilic block copolymers in aqueous media. Drug-loaded polymeric micelles with various targeting functions. (A) Antibody-targeted micelles (B) ligand-targeted micelles (C) Micelles with cell-penetrating function. A nanocarrier is nanomaterial being used as a transport module for ...
Human serum albumin (HSA) and chitosan are also materials of interest for the generation of nanoparticle delivery systems. Using albumin nanoparticles for stroke therapy can overcome numerous limitations. For instance, albumin nanoparticles can enhance BBB permeability, increase solubility, and increase half-life in circulation.
The behavior of nanoparticles is a function of their size, shape and surface reactivity with the surrounding tissue. For example, they could cause overload on phagocytes, cells that ingest and destroy foreign matter, thereby triggering stress reactions that lead to inflammation and weaken the body's defense against other pathogens.
Nanoparticle drug delivery systems are engineered technologies that use nanoparticles for the targeted delivery and controlled release of therapeutic agents. The modern form of a drug delivery system should minimize side-effects and reduce both dosage and dosage frequency. Recently, nanoparticles have aroused attention due to their potential ...
Stellar nucleosynthesis. In astrophysics, stellar nucleosynthesis is the creation of chemical elements by nuclear fusion reactions within stars. Stellar nucleosynthesis has occurred since the original creation of hydrogen, helium and lithium during the Big Bang. As a predictive theory, it yields accurate estimates of the observed abundances of ...
Synthesis of nanoparticles by fungi. Throughout human history, fungi have been utilized as a source of food and harnessed to ferment and preserve foods and beverages. In the 20th century, humans have learned to harness fungi to protect human health ( antibiotics, anti-cholesterol statins, and immunosuppressive agents), while industry has ...
Nuclear fusion is a reaction in which two or more atomic nuclei, usually deuterium and tritium (hydrogen isotopes), combine to form one or more different atomic nuclei and subatomic particles (neutrons or protons). The difference in mass between the reactants and products is manifested as either the release or absorption of energy.