the study area is located in the northeast of iran. miankuhi formation is 500m thick and comprises homogeneous shales, brown granular sandstone and siltstone. in this study, 45 samples were taken from miankuhi shales and sandstones in order to determine their tectonic origin by using a polarizing microscope. samples were analysed by x-ray fluorescence (xrf) method to determine their chemical co...

The synthesis and characterization of a novel trityl-TEMPO biradical and the investigation of its properties as Dynamic Nuclear Polarization (DNP) polarizing agent are reported. Comparison with a structurally related monoradical (PTM-TEMPE) or mixtures of the two monoradical components reveals that the biradical has a much higher polarization efficiency and a faster polarization buildup. This o...

The optical coating design of beamsplitters and anti-reflection coatings that are non-polarizing, those that have the same reflection for both sand p-polarizations at specified angles, is a challenge. This is because the effective indices of refraction for the media and coating layer materials have a different function of the angle of incidence for each polarization. This limits what can be ach...

The Electrical Activity of the Heart and Brain Under Acute Experimental Anoxia: The Protective Effect of Polarizing Solutions • Acute anoxia was produced in 80 dogs under anesthesia with sodium pentobarbital. Respiration was maintained with a Palmer's pump through an endotracheal tube. The anoxia was produced by stopping the pump and occluding the endotracheal tube. Polarizing solution (glucose...

In the Ekert cryptographic scheme (E91) [1] pairs of EPR particles were used to generate identical sequences of bits in remote places, while Bell’s theorem certified that the particles were not measured in transit by an eavesdropper. The modification of the Ekert scheme proposed by Bennett, Brassard and Mermin (BBM92) [2] did not use the Bell theorem and was based essentially on the fact that t...

The PAX project at GSI Darmstadt plans to polarize an antiproton beam by repeated interaction with a hydrogen target in a storage ring. Many of the beam particles are required to remain within the ring after interaction with the target, so small scattering angles are important. Hence we concentrate on low momentum transfer (small t), a region where electromagnetic effects dominate the hadronic ...