background radiography is as a part of periodontal examination. early detection of periodontal disease is important in the prevention of tooth loss and patient’s general health. objectives the objective of this study was to compare diagnostic accuracy of cone-beam computed tomography (cbct) with digital direct intraoral radiography, in assessment of periodontal osseous lesions. materials and me...

Sabine Bognar and Manuel van Gemmeren from the WWU Münster have been invited to contribute cover of this issue. The image depicts a volcano symbolize general theme sulfur chemistry, whereas piles rubble reflect selectivity reaction. Read full text article at 10.1002/chem.202004835.

An all-digital fractional-N Phase-Locked Loop (PLL) built with standard cells and digital synthesis tools allows easier integration with digital blocks and portability to different processes or technologies. This paper presents a PLL built with standard cells and digital synthesis tools and achieves good jitter performance. It uses an embedded time-to-digital converter (TDC) with multipath to i...