Label-free detection of single biomolecules in solution has been achieved using a variety experimental approaches over the past decade. Yet, our understanding magnitude optical contrast and its relationship with underlying atomic structure as well achievable measurement sensitivity precision remain poorly defined. Here, we use Fourier optics approach combined an structure-based molecular polari...

High-risk societies are uncertain, ambiguous and unpredictable. Risk fluctuations prone to the intertwining overlapping of various accident hazards safety risks. China is interweaving risks, which leads an increase in number factors affecting public as well [1]. Therefore, this paper will quantify specific ranking indicators terms frequency hazards, degree vulnerability different hazards. The b...