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    Figure 1 shows the two options facing R H engage in honest management and D engage in dishonest management. Dishonest management has a payoff ψ defined by a single marginal cost parameter ψ (χ) = − χ.On the other hand honest recycling has a payoff of π (α ϕ γ) where γ is the marginal cost of recycling (e.g. labor) α is the downstream revenue potential and ϕ ∈ 0 1

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    1 Selective Recovery of Precious Metals through Photocatalysis 2 Yao Chen 1 Mengjiao Xu 1 Jieya Wen 1 Yu Wan 1 Qingfei Zhao 1 Xia Cao 3 Yong Ding 4 3 Zhong Lin Wang3 4 Hexing Li1 2

  • Types of PCB Different Types of Printed Circuit Board (PCB)

     · A PCB (Printed Circuit Board) or PWB (Printed Wiring Board) is a complex circuitry of copper tracks on a heat resistant material called PCB substrate. Electronic components are soldered on this Circuit Board to control flow of electricity in a preset matter for the electronic device to work in a manner that it was designed for.

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     · Electronic Components and Their Function. Capacitors Function of this Basic Electronic Components is to store electrical charge in an electrical field. Diodes Components that conduct electricity in only one direction. Integrated Circuits or ICs A microelectronic computer electronic circuit incorporated into a chip or semiconductor a whole system rather than a single component.

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     · Copper and gold recovery rate rise from 82.91 to 48.81 –93.54 and 95.73 respectively when current density increases from 40 to 70 mA/cm 2. With the further increase of current density copper recovery rate shows a slight upwards and gold recovery rate decreases slightly as illustrated in Fig. 6.

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  • How to Remove Gold from Circuit Boards 12 Steps (with

     · Since gold requires stronger chemicals to be dissolved the nitric acid will melt all the plastic and metal parts of the circuit board without harming the gold bits. Drain the nitric acid from the mixture. Use a filter to separate the solid parts from the liquid. Pick out the unmelted parts.

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    The Apple iPhone 5s was announced on September 10 2013. Repair of this device is similar to the previous models and requires screwdrivers and prying tools. Available as GSM or CDMA / 16 32 or 64 GB / Silver Gold and Space Gray.