LASER POLARIZATION-VARIABLE AUTOFLUORESCENCE OF THE NETWORK OF OPTICALLY ANISOTROPIC BIOLOGICAL TISSUES: DIAGNOSTICS AND DIFFERENTIATION OF EARLY STAGES OF CANCER OF CERVIX UTERI

This research presents the results of investigation of laser polarization fluorescence of biological layers (histological sections, cytological smears) in the task of diagnostics and differentiation of early stages of cancer: Dysplasia — cervical microinvasive carcinoma of cervix uteri. The analytical conditions of polarization-optimal probing of biological layers were determined basing on the model of linear birefringence and dichroism of birefringent (fibrillar, porphyrin) networks. The technique of polarization-variable laser autofluorescence was developed and experimentally tested. The objective criteria (statistical moments) of differentiation of histological sections autofluorescent images of endometrium biopsy and cytological smears of it mucous coat were defined. The operational characteristics (sensitivity, specificity, accuracy) of this technique were determined concerning the positions of probative medicine, and clinical efficiency

Isothermal Sections of the Sm(Er)2Se3 – PbSe – GeSe2 Systems at 770 K and Crystal Structure of Sm1,32Pb1,68Ge1,67Se7 Compound

За допомогою рентгенофазового аналізу досліджено взаємодію компонентів у квазіпотрійних системах Sm2Se3 – PbSe – GeSe2 і Er2Se3 – PbSe – GeSe2 при температурі 770 К. Встaновлено існування та вивчено методом порошку кристалічну структуру тетрарної сполуки Sm1,32Pb1,68Ge1,67Se7 (пр. гр. P63, а = 1,04569(4) нм, c = 0,66222(5) нм). The interaction has been studied between the components in quasiternary systems Sm2Se3 – PbSe – GeSe2 and Er2Se3 – PbSe – GeSe2 at 770 K using X-ray phase methods. Existence has been found and the crystal structure of Sm1,32Pb1,68Ge1,67Se7 compound has been examined by means of powder diffraction method (space group P63, а = 1,04569(4) nm, c = 0,66222(5) nm)

Phase Equilibria in the Sm(Ho)2S3–PbS–SnS2 Systems at 770 K

На основании результатов рентгенофазового анализа исследовано физико-химическое взаимодействие компонентов в квазитройных системах Sm2S3–PbS–SnS2 и Ho2S3–PbS–SnS2. Построены изотермические сече- ния исследуемых систем при температуре 770 К Interaction of the components in the Sm2S3 – PbS – SnS2 and Ho2S3 – PbS – SnS2 systems have been investigated using X-ray phase analysis. Isothermal sections of the investigated systems have been constructed at 770 К

Phase Equilibria in the La2X3–PbX–SiX2 (X–S, Se) Systems at 770 K.

За результатами рентгенофазового аналізу досліджено фізико-хімічну взаємодію компонентів у квазіпотрійних системах La2S3–PbS–SiS2 і La2Se3–PbSe–SiSe2. Побудовано ізотермічні перерізи досліджуваних систем за температури 770 К. Interaction of the components in the La2S3–PbS–SiS2 and La2Se3–PbSe–SiSe2 systems have been investigated using X-ray phase analysis. Isothermal sections of the investigated systems have been constructed at 770 К

On the characterisation of a Bragg spectrometer with X-rays from an ECR source

Narrow X-ray lines from helium-like argon emitted from a dedicated ECR source have been used to determine the response function of a Bragg crystal spectrometer equipped with large area spherically bent silicon (111) or quartz (10$\bar{1}$) crystals. The measured spectra are compared with simulated ones created by a ray-tracing code based on the expected theoretical crystal's rocking curve and the geometry of the experimental set-up.Comment: Version acceptee (NIM