The chemical shift is sensitive to changes in the local environments and can report the structural changes. The structure information of a protein can be represented by the average chemical shifts (ACS) composition, which has been broadly applied for enhancing the prediction accuracy in protein subcellular locations and protein classification. However, different kinds of ACS composition can solve different problems. We established an online web server named acACS, which can convert secondary structure into average chemical shift and then compose the vector for representing a protein by using the algorithm of auto covariance. Our solution is easy to use and can meet the needs of users.

Material made of artificial molecules fabricated from cage-shaped granules of conductor (CGC) is introduced and its electrical and magnetic characteristics are presented. Its refractive index, calculated using complex relative permittivity and complex relative permeability, is 1.504 at 35 GHz. A two-element lens, consisting of a pair of spherical plano-convex lenses, was designed and fabricated by embedding CGC in poly(methyl methacrylate). The active millimeter-wave imaging system was constructed with the two-element lens by having the curved surfaces face each other. Millimeter-wave (MMW) images of a right trapezoid and twin bars were obtained. The image quality was acceptable, proving that the CGC material has the ability to refract MMWs in MMW imaging and that the ability contrasts with that of some traditional high polymer material.

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Abstract.A biconvex lens was designed and fabricated by embedding electromagnetic-induction materials (cage-shaped granules of conductor materials, CGC) in polymethyl methacrylate (PMMA). The CGC material has a refractive index of 1.504 at 35 GHz. The spatial resolution and depth of focus of the active millimeter wave (AMMW) imaging system were analyzed. Millimeter-wave (MMW) images of a square and two bars have been obtained with the biconvex lens. The image quality was acceptable, proving that the CGC material has the ability to refract MMWs in MMW imaging.

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