Recovery of gold and other valuable metals from electronic scrap involves a complex metallurgical flow sheet and requires state-of-the-art recovery technologies that are available in large-scale, integrated smelter and refinery operations. At the end of their use, electronic and other electrical product scrap offer an important recycling potential for the secondary supply of gold and silver...

The technological growth of the last decades has brought many improvements in daily life, but also concerns on how to deal with electronic waste. Electrical and equipment waste is fastest-growing rate industrialized world. One elements printed circuit board (PCB) almost every a PCB inside it. While (WPCB) recycling may result recovery potentially precious materials reuse some components, it cha...

The design (synthesis) of analog electrical circuits starts with a highlevel statement of the circuit's desired behavior and requires creating a circuit that satisfies the specified design goals. Analog circuit synthesis entails the creation of both the topology and the sizing (numerical values) of all of the circuit's components. The difficulty of the problem of analog circuit synthesis is wel...

This paper presents a simulation technique and a computer program for fast DC analysis of MOS transistor based VLSI circuits. Time domain analysis of a VLSI circuit is evaluated by a piecewise constant waveform approximation. This approximation is realized by repeatedly applying the developed DC analysis engine with initial conditions. All proposed methods such as device modeling, circuit parti...

It is well known that a quantum circuit on $N$ qubits composed of Clifford gates with the addition $k$ non can be simulated classical computer by an algorithm scaling as $\text{poly}(N)\exp(k)$[1]. We show that, for to simulate chaotic behavior, it both necessary and sufficient $k=O(N)$. This result implies impossibility simulating chaos computer.