Implementation and Reconfiguration of Robot Operating System on Human Follower Transporter Robot

Robotic Operation System (ROS) is an im- portant platform to develop robot applications. One area of applications is for development of a Human Follower Transporter Robot (HFTR), which can be considered as a custom mobile robot utilizing differential driver steering method and equipped with Kinect sensor. This study discusses the development of the robot navigation system by implementing Simultaneous Localization and Mapping (SLAM)

Structural and Stereochemical Studies of Laurokamurols A–C, Uncommon Bis-sesquiterpenoids from the Chinese Red Alga Laurencia okamurai Yamada

Three novel heterodimeric laurane-type sesquiterpenoids, laurokamurols A–C (<b>1</b>–<b>3</b>), along with eight known related monomeric ones (<b>4</b>–<b>11</b>) were isolated from the East China Sea red alga Laurencia okamurai Yamada. The absolute configurations of the new bis-sesquitepenoids, especially their axial chirality, were determined by extensive spectroscopic analyses and TDDFT-ECD method. All of the new compounds showed promising PTP1B inhibitory activities with IC₅₀ values comparable to the positive control, indicating them as potential food additives or pharmaceutical drug leads toward obesity or diabetes