This paper presents a novel one-dimensional (1D) frequency scanning dual-slot-waveguide array antenna with versatile advantages such as large scan volume, high frequency sensitivity, low cross-polarization and low sidelobe.Electromagnetic waves radiate through the leaky-wave dual slots, machined on the side chambers of the single-ridge serpentine w
Abstract: This article aims to analyze historical learning in social science subjects by inviting elementary school students to learn outside the classroom.During this time the obstacles in learning history are verbalism, monotony, and lack of understanding of elementary school students about a al13sxb30en historical event.Learning history can be m
The bivalent chromosomes that are generated during prophase of meiosis I comprise a pair of homologous chromosomes.Homolog pairing during prophase I must include mechanisms that avoid or eliminate entanglements between non-homologous chromosomes.In Drosophila spermatocytes, non-homologous associations are disrupted by chromosome territory formation
In this paper, two-color lasing emission is experimentally demonstrated by employing a multimode Fabry-Pérot laser diode (MMFP-LD) associated with external cavity of two tunable filters and an erbium-doped fiber amplification (EDFA), whose difference frequency is quasi-continuously tunable from several hundred GHz to more than 2 al13sxb30en