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In this study, a gallium nitride (GaN) substrate produced by the Na flux method was planarized using catalyst-referred etching (CARE). To improve the removal rate, the GaN substrate was processed using CARE-assisted photoelectrochemical (PEC) reaction (PEC CARE); the removal rate was 45 nm/h. However, the shape was embossed because of subsurface scratches introduced during preprocessing. These scratches...
In this study a remote sensing approach for the mesquite tree (Prosopis juliflora) control is proposed. The mesquite tree is well known for its high adaptability to arid and semi-arid conditions and characterized by very high water use efficiency. Introduction of the mesquite has caused several environmental problems in Sudan. In this study, to monitor mesquite water use efficiency the concept of...
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