Recent progress in the cartography marketcan only be described as radical. Thetime-consuming days of mapping by handseem numbered, as geographic informationsystem (GIS) experts, professional landsurveyors (PLS) and others withinthe field of cartography awaken to theadvantages of integrating light detectingand ranging (LIDAR) into their mobilemapping systems.LIDAR is similar to radar, exceptthat the sensor sends out and receives....................
Piper betle Linn. is a traditional plant associated with the Asian and southeast Asian cultures. Its use is alsorecorded in folk medicines in these regions. Several of its medicinal properties have recently been proven. Phytochemicalanalysis showed the presence ofmainly terpenes and phenols in betel leaves. These constituents vary in the different cultivarsof Piper betle. In this paper we have attempted to profile eight locally available betel cultivars using the recently developedmass spectral ionization technique of direct analysis in real time (DART). Principal component analysis has also been employedto analyze the DART MS data of these betel cultivars. The results show that the cultivars of Piper betle could be differentiatedusing DART MS data.