As a dozen headstones have been discovered during excavations in south Alsace, archaeologists stored them in the Regional Directorate of Cultural Affairs in Strasbourg. In order to complete the survey they are used to practice by hand on the steles, they asked the INSA Strasbourg to reconstruct at least the 7 figured sandstones in 3D. The high accuracy required by the archaeologists can be reached by an expensive technique using laserscanning system. Aim of the current work is to look for an alternative method and (if appropriate) low cost software allowing to provide a similar quality and a sufficient level of details. The 3D reconstruction of the headstones based exclusively on multiple images processing is presented. The step of point cloud generation is detailed because it determines the final product quality. Therefore, an assessment of the produced point cloud has been performed through comparison to a reference point cloud obtained by laser scanning technique. The steps leading to the photo-realistic textured 3D models of the headstones are presented and the software used for that are evaluated. The final product respects the accuracy requirement of 1 mm desired by the archaeologists.
Appropriate waste handling is a concern in the fishing industry, seeking to minimize harm to the environment. This study aimed to evaluate vegetative growth at different concentrations of solid residue from shrimp farming in tomato seedlings. Tomato seeds cv. Santa Clara were sown in trays with substrate, until uniform germination and further development for transplant. The concentrations of the shrimp residue were mixed with coconut powder for use in the following treatments: coconut powder (control), 5, 10, 15 and 20 g of shrimp residue, with 8 replicates per treatment. After 7, 14, 21 and 28 days after transplant, the number of leaves and the length of the aerial part were evaluated. At the 50th day, the remaining phytotechnical, physiological and X-ray microanalysis characteristics were evaluated. The three parts of the solid residues were rich in macro and micronutrientes (Fe > Zn > Ca > S > P > Mn > Na > Mg > K > N). The plants grown with different concentrations of shrimp residue had a significant difference for the photosynthetic rate and transpiratory rate, starting at 10 g kg-1. The use of the P3 shrimp residue (cephalothorax + abdomen) was promising and could replace the use of fertilizers in the development of plants, reducing the amount of material released to the environment and easing degradation. The concentration of 10 g kg-1 of shrimp residue was efficient for the morphophysiological development of the tomato plants cv. Santa Clara.
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