Spectrochim Acta A Mol Biomol Spectrosc
December 2023
Due to its major interest for the chemistry of planetary atmospheres and exobiology, accurate spectroscopy data of phosphine are required for the search of signatures of this molecule in astronomical observations. In this work, high resolution infrared laboratory spectra of phosphine were analyzed for the first time in the full Tetradecad region (3769-4763 cm) involving 26 rotationally resolved bands. Overall, 3242 lines were assigned in spectra previously recorded by Fourier transform spectroscopy at temperatures 200 K and 296 K, using a combined theoretical model based on ab initio calculations.
View Article and Find Full Text PDFX-ray-induced photodynamic therapy (X-PDT) has recently evolved into a suitable modality to fight cancer. This technique, which exploits radiosensitizers producing reactive oxygen species, allows for a reduction of the radiation dose needed to eradicate cancer in the frame of the radiotherapy treatment of deep tumors. The use of transition metal complexes able to directly produce singlet oxygen, O(Δ), upon X-ray irradiation constitutes a promising route towards the optimization of the radiosensitizer's architecture.
View Article and Find Full Text PDFIn this work, we report calculated vibrational energy levels of the methane molecule up to 10 300 cm. Two potential energy surfaces constructed in quite different coordinate systems with different analytical representations are employed in order to evaluate the uncertainty of vibrational predictions. To calculate methane energy levels, we used two independent techniques of the variational method.
View Article and Find Full Text PDFEksp Klin Gastroenterol
January 2015
Objectives: Improve outcomes in patients with acute necrotizing pancreatitis by the differential application of minimally invasive interventions.
Methods: The results of treatment of 97 patients with acute necrotizing pancreatitis requiring minimally invasive surgical intervention were retrospectively analyzed. Percutaneous catheter drainage were used in 76.
The authors suggest a scale for assessment of face esthetics, based on the notion of "esthetic perception" and anthropometric data. The scale consists of 6 grades, from disproportional (1 score) to proportional harmonic (6 scores). The method of expert evaluation of face esthetics facilitates planning of comprehensive treatment of patients with maxillodentofacial abnormalities and deformations and helps more objectively assess the results of treatment and the efficacy of this or that treatment modality.
View Article and Find Full Text PDFVestn Khir Im I I Grek
June 1976
In 86 (49.4%) of 173 patients cancer of the colon of various localizations against the background of diffuse polyposis was diagnosed, rectal involvement being noted in 50%, cancer involvement of the cecum involvement of the cecum and ascending colon--in 5.4% and 7.
View Article and Find Full Text PDFVestn Khir Im I I Grek
October 1973