The structural transformations of the natural quartzite under the electron irradiation in doses range of 107…108 Gy in various medium were studied using IR-spectroscopy, X-ray diffraction, and crystal-optical analyzes. It was established that under the irradiation, both in air and in a water stream, intense crystallization of the amorphous component occurs, which is siliceous cement. The initial crystal structure of quartzite is also improved as a result of radiation annealing of defects and impurities present in the initial quartz. It was found that the water medium significantly accelerates these processes, however, in the studied doses range for both types of irradiation, degradation of the quartzite crystal structure is not observed.
The specific activity of 235U and content of native uranium for the Kharkiv region in drinking water, soil, roots, the leaf of hydrophyte “Pistia stratiotes” and the samples of kidney stones obtained from patients with urolithiasis were measuring by using gamma activation analysis on linac accelerator of NSC KIPT. The whole sample contained alpha-emitter uranium.
Gamma activation analysis on LUE NSC KIPT was used to measure macro-, microelements and 224,226,228RA in intact teeth and teeth with inflammatory odontogenic diseases. A comparative analysis of the phase composition of the teeth was carried out. It is shown that the size of apatite crystals in intact teeth is 3 times higher than in teeth with acute odontogenic diseases. The latter indicates the presence of an amorphous phase of carbonate inclusions and structurally unbound water
Using infrared spectroscopy, we studied the character of intermolecular interactions in the samples blood plasma of oncological patients with bone metastases in the treatment of their modern β-emitter 153Sm-oxabifor. The therapeutic dose of the 153Sm-oxabifor was 1.0 mCi/kg of the patient's body weight. Analysis of the IR-spectra showed that already after the first course of palliative radionuclide therapy there is a tendency to balance the products of free radical nature and antioxidants, which indicates the effectiveness of the treatment. Molecular changes in the blood plasma of cancer patients with bone metastases registered using infrared spectroscopy are specifc during palliative therapy.
This paper presents the results of the combined use of infrared spectroscopy and X-ray structural analysis in assessing the mineral composition of urinary concrement obtained during extracorporeal shock wave lithotripsy in 34 patients with urolithiasis. Registration of infrared spectra was carried out by an IKS-29 (LOMO) infrared spectrophotometer in the spectral range 4000 - 400 cm-1. X-ray structural analysis was carried out by X-ray diffraction using an X-ray diffractometer DRON-4-07. The mineral composition of 22 (64,70%) urinary stone samples according to infrared spectroscopy data, fully corresponded to the data of X-ray structural analysis. Vevellite, hydroxylapatite and uric acid were identified in most stones. In 4 (11,76%) cases, this method did not allow us to identify the phosphate component in the composition of the concrements accurately. Among the mineral components, which had the same characteristics in the infrared spectrum and corresponded to calcium phosphate, during the X-ray structural analysis, hydroxyapatite was identified in 3 (8,82%) cases, and struvite in 1 (2,94%) sample. 8 (23,52%) samples of urinary concrements had an amorphous-crystalline structure, which in the infrared spectrum was characterized by absorption bands corresponding to vevellite. When X-ray diffraction analysis of these samples was carried out, undifferentiated areas in the form of a halo were determined on the diffractogram that pointed out the presence of an amorphous phase. The data obtained demonstrate the potential of using infrared spectroscopy as the first choice method in assessing the mineral composition of urinary stones. X-ray structural analysis can be recommended as a clarifying technique in order to identify the phosphate component of stones of a crystal structure, as well as in the case of detecting rare, atypical minerals.
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