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Polystyrene integrated solid foams are not commonly used in biomedical applications but have shown promise as a new drug delivery vehicle. The manipulation of the porous foam networks is a fundamental component in solid foam dosing – affecting variables such as dissolution, adsorption, and drug diffusion. [4]
In 2019, Maryland was the first state to enact a ban, which went into effect on October 1, 2020. [79] Bans were also passed that year in Maine and Vermont, with both states' laws taking effect on July 1, 2021. [80] [81] In 2020, New York passed a ban that took effect on January 1, 2022, while New Jersey passed a ban that took effect on May 4 ...
On 1 July 2015, New York City became the largest city in the United States to attempt to prohibit the sale, possession, and distribution of single-use polystyrene foam (the initial decision was overturned on appeal). [82] In San Francisco, supervisors approved the toughest ban on "Styrofoam" (EPS) in the US which went into effect 1 January 2017.
A blowing agent is a substance which is capable of producing a cellular structure via a foaming process in a variety of materials that undergo hardening or phase transition, such as polymers, plastics, and metals. [1] They are typically applied when the blown material is in a liquid stage. The cellular structure in a matrix reduces density ...
Humans are exposed to toxic chemicals and microplastics at all stages in the plastics life cycle. Microplastics' effects on human health are of growing concern and an area of research. The tiny particles known as microplastics (MPs), have been found in various environmental and biological matrices, including air, water, food, and human tissues.
The triboelectric effect (also known as triboelectricity, triboelectric charging, triboelectrification, or tribocharging) describes electric charge transfer between two objects when they contact or slide against each other. It can occur with different materials, such as the sole of a shoe on a carpet, or between two pieces of the same material.
[1] [2] [3] Foam cells are fat-laden cells with a M2 macrophage-like phenotype. They contain low density lipoproteins (LDL) and can be rapidly detected by examining a fatty plaque under a microscope after it is removed from the body. [4] They are named because the lipoproteins give the cell a foamy appearance. [5]
The primary author, the late biologist Alexey V. Yablokov, was a member of the Russian Academy of Science, and was deputy chair of the commission of ecology of the USSR' Parliament (1989-1991), councillor on ecology and public health to the President of the Russian Federation (1991-1993) and chair of the state commission on dumping of radioactive wastes in seas surrounding the Russian ...