Publications by authors named "Medhanie Tesfay Gebrekidan"
Breast Tumor Analysis Using Shifted-Excitation Raman Difference Spectroscopy (SERDS).
Technol Cancer Res Treat
January 2018
Article Synopsis
- We utilized a shifted-excitation Raman difference spectroscopy method to classify breast tissue samples (normal, fibroadenoma, invasive carcinoma) with 240 measurements per tissue type.
- Although raw spectra provided clear differentiation between normal and tumor tissues, distinguishing fibroadenoma from invasive carcinoma required isolating pure Raman spectra due to fluorescence interference.
- The method achieved high diagnostic accuracy, especially for invasive carcinoma (99.15% sensitivity) and overall demonstrated potential as a support tool for traditional histopathological diagnosis in breast pathology.
Article Synopsis
- This study looks at using in situ Raman spectroscopy to monitor how fruits, specifically mango and persimmon, are dried using supercritical carbon dioxide (SC-CO₂).
- The experiments were done at high pressure (10 MPa) and temperature (313 K), focusing on changes in water content and fruit structure during drying.
- The findings show that using a 532 nm excitation wavelength provides better quality spectra compared to 785 nm, and that CO₂ absorption helps improve water extraction from the fruit.