WEEE Resource Ecological Compensation Mechanism Design

With the rising awareness of green sustainable development, waste electrical and electronic products (WEEE) resource processing has become a hot issue. Establishing an ecological compensation mechanism is of important to solve the current difficulties in constructing WEEE resource processing. WEEE resource ecological compensations beneficial to alleviate the pressure of WEEE on ecological environment and promote sustainable and coordinated development of WEEE supply chain. The paper aims to improve the ecological compensation system by systematically combing ecological compensation theory and practical experience of ecological compensation mechanism. Taking Shandong Province as an example, WEEE resource ecological compensation mechanism framework from the aspects of compensation subject, compensation object, compensation method and compensation standard is constructed. The guarantee measures for constructing WEEE resource ecological compensation mechanism in Shandong Province are also proposed

Left-Right Asymmetry of Weak Interaction Mass of Polarized Fermions in Flight

The left-right polarization-dependent asymmetry of the weak interaction mass is investigated. Based on the Standard Model, the calculation shows that the weak interaction mass of left-handed polarized fermions is always greater than that of right-handed polarized fermions in flight with the same velocity in any inertial frame. The asymmetry of the weak interaction mass might be very important to the investigation of neutrino mass and would have an important significance for understanding the parity nonconservation in weak interactions.Comment: 8 pages, 2 figures, corrected calculatio

Efficient spin-current injection in single-molecule magnet junctions

We study theoretically spin transport through a single-molecule magnet (SMM) in the sequential and cotunneling regimes, where the SMM is weakly coupled to one ferromagnetic and one normalmetallic leads. By a master-equation approach, it is found that the spin polarization injected from the ferromagnetic lead is amplified and highly polarized spin-current can be generated, due to the exchange coupling between the transport electron and the anisotropic spin of the SMM. Moreover, the spin-current polarization can be tuned by the gate or bias voltage, and thus an efficient spin injection device based on the SMM is proposed in molecular spintronics.Comment: 4 figure