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Global coal exports post rare decline in 2025 on China cuts Global shipments of thermal coal - burned in power stations - have posted their first annual decline since 2020 on the back of lower ...

Pattern formation is the developmental process by which cells acquire different identities, depending on their relative spatial positions within the embryo. Pattern formation ensures that tissues and ...

Circular dichroism is the difference in the absorption of left- and right-handed circularly polarized light that occurs when a molecule contains one or more chiral, light-absorbing groups. It is used ...

Use a caliper or tape measure to center the toe section on the bottom of the storage section. Secure them together using wood ...

Abstract: This paper presents the design of a microstrip line-fed substrate-integrated waveguide (SIW) ring antenna designed to excite a sixth-order circularly polarized conical radiation pattern.

Abstract: The synthesis and optimization of the radiation pattern of a monopole circular antenna array are described. The method is fast and effective since it employs impedance and radiation pattern ...