A novel three-dimensional (3-D)-printed wideband circularly-polarized (CP) waveguide based 4 × slotted antenna array is proposed for wireless communications in the paper. For radiating CP waves, several additional eigenmodes are introduced by designing layers. By adjusting multiple resonances within cavity, axial ratio (AR) bandwidth can be enhanced, and impedance matching improved. Due to good...

DFB lasers with ultrashort cavities or integrated passive waveguide reflectors are frequently proposed to realize directly modulated (DMLs) for carrying ultrahigh data rate signals. The former suffers from poor heatsink and laser cleavage yield, while the single-mode stability of latter scheme is seldom addressed. mode selection device performance a well known be very sensitive facet reflection...

Sepia pharaonis is an important commercial species endemic to the tropical Indo-Pacific region. Despite its commercial significance, only few information on natural populations is available. This study was aimed to describe the aspects of size-composition, length-weight relationship, catch rates, seasonal recruitment and inter-cohort growth patterns of S. pharaonis population (Clade C), distrib...

OBJECTIVES This study aimed to evaluate the vertical discrepancy of implant-supported crown structures constructed with vacuum-casting and Direct Metal Laser Sintering (DMLS) technologies, and luted with different cement types. STUDY DESIGN Crown copings were fabricated using: (1) direct metal laser sintered Co-Cr (LS); (2) vacuum-cast Co-Cr (CC); and (3) vacuum-cast Ti (CT). Frameworks were ...

Development of additive technologies and biocompatible materials facilitated their use in the custom-made implants manufacture. Verification of custommade implants manufactured using the additive manufacturing technologies is the key task to be fulfilled prior to the clinical application of an implant. It consists of parameters verification within individual steps, from a software design, throu...

Increasing profits by reducing costs during product development and its production quality increasingare challenges that companies face every day in their operations. The aspiration of modern is to achievean effect similar those mass (or at least large series production) even on extremely small ofproducts, personalized products. Techno-economic analysis an integral part thecompany's information...