Results of a clinical trial released today in STEM CELLS Translational Medicine indicate that breast augmentation in patients treated with fat grafts enriched with autologous adipose-derived stem cells (ASCs) had significantly ...
Jul 08, 2020
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A new study by MIT neuroscientists into how seemingly similar neuronal subtypes drive locomotion in the fruit fly revealed an unexpected diversity as the brain's commands were relayed to muscle fibers. A sequence of experiments ...
Jul 07, 2020
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Learning, memory and behavioral disorders can arise when the connections between neuron, called synapses, do not change properly in response to experience. Scientists have studied this "synaptic plasticity" for decades, but ...
Jun 30, 2020
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Silicone molecules from breast implants can initiate processes in human cells that lead to cell death. Researchers from Radboud University have demonstrated this in a new study published on 12 June in Scientific Reports. ...
Jun 12, 2020
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Summer is back and so are ticks—and the potential to get Lyme disease. With more people eager to be out in the woods after months at home, a Michigan State University researcher, who helped develop The Tick App, warns of ...
Jun 12, 2020
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(HealthDay)—Americans have a positive attitude toward plastic surgery in the COVID-19 period, and recommendations have been issued for resuming elective procedures, according to a press release issued by the American Society ...
Jun 08, 2020
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Adult neurogenesis, in which new neurons are generated within the hippocampus in the fully developed adult brain, occurs in mice—but how new neurons are functionally integrated into existing brain circuitry has remained ...
Jun 04, 2020
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Home cooks have been trying out their skills during isolation. But the way food tastes depends on more than your ability to follow a recipe.
Jun 03, 2020
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For a while now, some plastic surgeons have been using stem cells to treat aging, sun-damaged skin. But while they've been getting good results, it's been unclear exactly how these treatments—using adult stem cells harvested ...
May 28, 2020
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The microbes that inhabit our bodies are influenced by what we eat, drink, breathe and absorb through our skin, and most of us are chronically exposed to natural and human-made environmental contaminants. In a new paper, ...
May 21, 2020
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Plastic is the general common term for a wide range of synthetic or semisynthetic organic amorphous solid materials suitable for the manufacture of industrial products. Plastics are typically polymers of high molecular weight, and may contain other substances to improve performance and/or reduce costs.
The word derives from the Greek πλαστικός (plastikos) meaning fit for molding, and πλαστός (plastos) meaning molded. It refers to their malleability, or plasticity during manufacture, that allows them to be cast, pressed, or extruded into an enormous variety of shapes—such as films, fibers, plates, tubes, bottles, boxes, and much more.
The common word plastic should not be confused with the technical adjective plastic, which is applied to any material which undergoes a permanent change of shape (plastic deformation) when strained beyond a certain point. Aluminum, for instance, is plastic in this sense, but not a plastic in the common sense; while some plastics, in their finished forms, will break before deforming and therefore are not plastic in the technical sense.
There are two types of plastics: thermoplastics and thermosets. Thermoplastics, if exposed to enough heat, will melt. Thermosets will keep their shape until they are charred and burnt. Some examples of thermoplastics are grocery bags, piano keys and some automobile parts. Examples of thermosets are children's dinner sets and circuit boards.
This text uses material from Wikipedia, licensed under CC BY-SA
