Zar warna gambir diperoleh dari hasil ekstrak tanaman gambir yang merupakan saah satu tanaman komoditi ekspor unggulan Sumatera Barat yang memberikan devisa cukup besar dengan prospek pengembangan yang cukup baik.Zat warna gambir adalah zat wama alam jenis mordan-dye dan tidak tahan terhadap garam yang dipakai dalam pencucian.Ketahanan luntur warna
Hexagonal discrete global grid systems are the preferred data models supporting multisource geospatial information fusion.Related research has aroused widespread concern in the academic community, and hierarchical indexing algorithms are one of the main research focuses.In this paper, we propose an algorithm for indexing the cell of a ringed spatia
The speckle phenomenon produced by coherent waves interfering with each joico lumishine 10n other is undesirable in laser imaging systems.For each of the laser speckle reduction methods in the literature, it is difficult to reduce speckle to an extremely low level (< 3%) and also ensure good image quality.Therefore, a compound speckle