Exploration of new superconductors has always been one the research directions in condensed matter physics. We report here a layered heterostructure [(Fe,Al)(OH)2][FeSe]1.2, which is synthesized by hydrothermal ion-exchange technique. The structure suggested combination X-ray powder diffraction and electron (ED). [(Fe,Al)(OH)2][FeSe]1.2 composed alternating stacking tetragonal FeSe layer hexago...

We use first-principles calculations to investigate the geometric, electronic and magnetic properties of metal adatoms on two typical graphene substrates (monolayer and bilayer). Firstly, we study the adsorption behaviors and the doping effects of metal atoms on pristine and defective bilayer graphene sheets (PBG and DBG). It is found that the metal doping in DBG sheets is more stable than that...

The existence of a critical roughness height for outer layer similarity between smooth and rough wall turbulent boundary layers is investigated. Results are presented for boundary layer measurements on flat plates covered with sandgrain and woven mesh with the ratio of the boundary layer thickness to roughness height /k varying from 16 to 110 at Re =7.3 103–13 103. In all cases tested, the laye...

We define a new bistratified ganglion cell type of cat retina using intracellular staining in vitro. The theta cell has a small soma, slender axon, and delicate, highly branched dendritic arbor. Dendritic fields are intermediate in size among cat ganglion cells, with diameters typically two to three times those of beta cells. Fields increase in size with distance from the area centralis, rangin...

Capillary instability of a viscous fluid cylinder of diameter D surrounded by another fluid is determined by a Reynolds number J = V D `= `, a viscosity ratio m = a= ` and a density ratio ` = a= `. Here V = = ` is the capillary collapse velocity based on the more viscous liquid which may be inside or outside the fluid cylinder. Results of linearized analysis based on potential flow of a viscous...

In recent years, transformers have shown great potential in hyperspectral image processing and also been gradually applied target detection (HTD). Nonetheless, applying a typical transformer to HTD remains challenging. The heavy computation burden of the multi-head self-attention (MSA) limits its efficient HTD, while limited ability extract local spectral features can reduce discrimination lear...

Various forms of the viscous force caused by collision-induced parallel viscous stresses within an inhomogeneous magnetized plasma are presented. New forms are proposed for initial value extended MHD codes to capture the “fast” (Braginskii) collisional viscous force effects on short time scales and multi-collisionality regime “residual” viscous forces on collision time scales and longer in axis...