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    Our colleagues at Mercedes-Benz Energy use batteries that are no longer suitable for vehicles in a stationary energy storage and feed thousands of kilowatt hours into the power grid each day. We have really made a lot of progress and we can already keep the components of a battery in the cycle for a very long time before recycling is due.

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    Jan 01 2019 · 1. Introduction. Printed circuit boards (PCBs) are essential parts of the great majority of electric and electronic devices which can contain more than 18 Cu 80 g ton −1 Au and 600 g ton −1 Ag. The challenge of developing an efficient technology for metals recovery from discarded PCBs is due to the wide variety of materials used in the manufacture of such boards in order to perform the

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    Oct 01 2020 · Nevertheless the remained uncontrolled and open e-waste recycling activities in Guiyu including plastics recycling and circuit board baking still made considerable influence on the air environment and resulted in alarming levels of PCDD/Fs (0.73– 2.43 pg I-TEQ/m 3) in the recycling areas. 4.4. Plants and foods

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    Its working principle is shown in Figure 1b. In 2017 the authors used the same technology to develop a smaller 8 8 4 R-G-B-IR micro-LED array 30 . The dimensions of the blue green red and infrared LEDs were 230 μm 385 μm 210 μm 210 μm 225 μm 225 μm and 285 μm 285 μm respectively.

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    Apr 13 2017 · The working of the project is as follows. As mentioned earlier the circuit is divided into IR transmitter and IR receiver circuits. The infrared rays emitted by the IR Transmitter i.e. IR LED must be detected by the IR Receiver i.e. TSOP 1738. In the transmitter part the 555 Timer is designed to operate in Astable Mode.

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