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In this work, a single fiber optic fiber was developed as a water pollution sensor based on the Surface Plasmon Resonance Phenomenon based upon the Mach - Zehender Interferometry (MZI) technology. The sensor submitted was developed to detect water pollutants. The SPR sensors were prepared by coating a golden metallic film which thickness 42 nm on a chemically etched single-mode fiber with a thickness of 20 micrometers, which achieved the best results of sensitivity to water pollution, the results of the high sensitivity of the optical fiber sensor were obtained based on the surface plasmon resonance phenomenon. The experimental results showed high sensitivity, reaching 1315 pm/mol.l−1 for a salty solution with distilled water, 1705 pm/mol.l−1 for the salty solution with tap water, as well as 2222 pm/mol.l−1 for sugar solution with distilled water, and 1925 pm/mol.l−1 for sugar solution with tap water. This means that these sensors which are based on SPR could be very useful in the field of water pollution detection.

The level structure of 125Te by considering 124Te as a core for positive parity low-lying states has been investigated. Spectroscopic factor for both pick-up and stripping reactions were deduced according to the Interacting Boson-Fermion Model(IBFM) and compared with experimental results. Considering 126Te as a core gives best description to the 125Te nucleus.

Breast cancer is one of the most important malignant forms of cancers and it represents a great threat to life for women. FT-IR spectra ware taken for 98 samples of breast tissues that were previously histopathologically identified by pathologist experienced as: 63 normal (N) samples and 35 invasive ductal carcinoma (IDC) samples that were classified in different grades 19 G1 samples,7 G2samples and 9 G3 samples in Mid-IR frequency range between 400 cm -1 and 4000 cm -1 . Many spectral differences were observed in the frequency regions N-H stretching, Amide bands, C-H vibrations, and 950-1400 cm -1 . The aim of this study is analyze different grades of IDC spectroscopically to evaluate the efficiency of FT-IR spectroscopy to differentiate between these grades. The results show considerable decrease in the lipid and carbohydrate content with the carcinoma grades (from G1 to G3), while, protein, collagen and nucleic acid (DNA) reveal slight increase with the carcinoma grade, that will be useful in classifying three different nuclear grades. This study demonstrates that FT-IR spectroscopy is a promising tool for accurate, rapid diagnosis of breast canser.

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