Nuclear magnetic shielding is a second-order molecular electronic property which provides a severe test of the accuracy of molecular quantum mechanical calculations. While electric dipole polarizability and hyperpolarizabilities provide tests of the wavefunction at the outer regions, nuclear shielding is very sensitive, especially to contributions from high angular momentum functions, in the re...

The nuclear magnetic shielding tensor is a sensitive probe of the local electronic environment, providing information about molecular structure and intermolecular interactions. The magnetic shielding tensor of the water proton has been determined in hexagonal ice, but in liquid water, where the tensor is isotropically averaged by rapid molecular tumbling, only the trace of the tensor has been m...

In medical institutions, the high weight of shielding clothing restrains activities workers. Although lightweight is being manufactured to solve this problem, can only be reduced by 10%–20%. Flexible fibers are mainly used minimize activity restrictions; however, it difficult maintain reproducibility performance. When weaving with a yarn that contains material, content material in yarn, tensile...

This work studied protective material consisting of several metal oxide composites (Pb3O4, WO3, SnO2, and Bi2O3)-natural rubber (NR) for X-ray gamma-ray shielding. The were prepared through open milling vulcanization processes further characterized by scanning electron microscope (SEM), diffraction (XRD), rheometry analysis, density gauge. attenuation coefficient the sample was investigated usi...

Progress of the shielding calculation of the Super-FRS is reported here. At least as important as the shielding of the target area is the determination of the shielding in the region of the first dipoles as the part of the primary beam that will not interact in the target will be stopped here. The Monte-Carlo-method with FLUKA [1] used for the shielding assessment here has already been describe...

Although the incidence of pneumoconiosis has been decreasing in Japan, welders’ health hazards due to welding fume inhalation are still serious, because effective engineering methods for controlling fumes are technically difficult to implement in many welding shops. In the 6th notification of general prevention of dust hazards issued by the Japanese Ministry of Health, Labor and Welfare (2003–2...

In order to fulfill the ever-growing requirements for electromagnetic interference (EMI) shielding materials, achieving a high efficiency with great flexibility is still big challenge. Herein, high-performance EMI composite films excellent mechanical properties were fabricated via convenient evaporation method using poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) and silver ...