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Full-Text Articles in Physical Sciences and Mathematics
Utilization Of A Tropospheric-Stratospheric Lidar System To Study Mountain Induced Gravity Waves Over Jenny Jump State Forest, Anthony Teti
Utilization Of A Tropospheric-Stratospheric Lidar System To Study Mountain Induced Gravity Waves Over Jenny Jump State Forest, Anthony Teti
Theses
Gravity waves are a dominant driver of the middle and lower atmospheric circulation. Yet such waves have been difficult to study due to their inherent small spatial and temporal scales and synoptic occurrence, and thus require advanced experimental systems. In this thesis first results are presented from a newly constructed tropospheric-stratospheric lidar operating at the New Jersey Institute of Technology-United Astronomy Clubs of New Jersey site in Jenny Jump State Forest in northwest New Jersey. The system utilizes a 4-W 532-nm Nd:YAG laser transmitter and a 4-inch telescope receiver to collect backscattered photons from the lower atmosphere in order to …
Non-Destructive Evaluation Of Agglomerated Cork Products Using Thz Spectroscopy And Imaging, Han Zhang
Non-Destructive Evaluation Of Agglomerated Cork Products Using Thz Spectroscopy And Imaging, Han Zhang
Theses
Terahertz spectroscopy from 0.15 to 0.3 THz is used to classify agglomerated cork products. Position dependent scattering of radiation allows one to image the internal structure of cork products. Previous studies have focused on natural (solid) cork stoppers. In this study, the feasibility of classifying agglomerated cork structures using THz imaging and spectroscopy is investigated. Both THz images and spectra are used to classify the agglomerated cork samples. Classification of the samples used three methods: visible examination of the THz images, statistical analysis of the pixel intensities, and a polynomial regression of the THz spectral data averaged over all pixels. …