Tea bags are dangerous for humans. Free Technical Library News

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Tea bags are dangerous to humans

07.10.2019

Ditching paper tea bags in favor of plastic ones can have negative consequences for the human body. Natalie Tufenkji, professor of chemical engineering at McGill University, came to this conclusion based on the results of the study.

After studying four samples of tea sold in plastic bags, the researchers found that when plastic is heated in hot water during the brewing process, about 11,6 billion microplastic and 3,1 billion nanoplastic particles are created.

These figures are thousands of times higher than the presence of plastic pollution in the environment, tap and bottled water, and some foods. The effect of this plastic on water fleas, which are model organisms often used in environmental studies, has been shown to be negative. Despite the fact that the microorganisms did not die, they showed anatomical and behavioral abnormalities.

The first author of the study, graduate student Laura Hernandez, stressed that more research is needed to determine how much plastic can negatively affect people and cause chronic changes in the body.

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The first broadband TV comes out 28.08.2005

The Chinese company Haier and the American Freescale Semiconductor introduced the world's first wideband (Ultra-Wideband, UWB) high-definition LCD TV (HDTV).

The new solution allows you to "split" an HDTV into two components - a screen and a multifunctional media server - without cable connections between them. at speeds up to 2 MB/s.

According to the developers, there are currently no analogues of Freescale wireless technology. For real-time transmission of high-definition or MPEG-2 video, a data rate of at least 20 Mb/s is required. The Haier TV has a 37-inch 1080i high-definition LCD screen that can also play standard definition video. The model is equipped with a component DVI connector and a built-in UWB antenna. Users do not need any additional equipment or cables, they only need to plug the TV into a power outlet.

The Digital Media Server is a multifunctional device that includes a player that supports personal video player (PVR), DVD playback, a TV tuner, and a Freescale UWB server that allows high-speed data transfer to a TV.

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