ПРИМЕНЕНИЕ РАДИОМЕТРИЧЕСКОЙ СИСТЕМЫ КРАЙНЕ ВЫСОКИХ ЧАСТОТ ДЛЯ ОБНАРУЖЕНИЯ ЗЛОКАЧЕСТВЕННЫХ НОВООБРАЗОВАНИЙ МОЛОЧНЫХ ЖЕЛЕЗ

Developed and investigated radiometric system EHF (extremely high frequency) range for the diagnosis of tissue samples affected by carcinoma. EHF system are significantly higher than in the possibility of identifying a lower frequency range, as in UHF band (UHF band) and UHF (ultra high frequency) resolution of 1-3 mm are impossible. It was established that the affected carcinoma tissue samples are 3 dB lower transmittance compared to unaffected tissues. Analysis of the dependency of the harmonic components of the modulation signal passing through the examined tissue samples shows dramatic difference in the behavior of the harmonic components of the frequency domain. This phenomenon appears to altered tissue the presence of slumps that due to the interaction of electromagnetic waves with the tissue samples may be explained by the so-called stochastic resonance effect. Разработана и исследована радиометрическая система диапазона крайне высоких частот для диагностики образцов тканей, пораженных карциномой. Ее возможности существенно превосходят возможности идентификации в диапазонах более низких частот, так как в диапазонах дециметровых волн и сверхвысоких частот разрешение 1–3 мм невозможны. Установлено, что пораженные карциномой образцы тканей имеют на 3 дБ меньший коэффициент прохождения по сравнению с непораженными тканями. Анализ приведенных зависимостей гармонических составляющих модуляционного сигнала, прошедшего через образцы исследуемых тканей, показывает резкое отличие поведения гармонических составляющих в частотной области. Данное явление наблюдается для измененной ткани – наличие резких спадов, что обусловлено взаимодействием электромагнитных колебаний с образцами тканей и может быть объяснено так называемым эффектом стохастического резонанса

ИССЛЕДОВАНИЕ СПЕКТРАЛЬНЫХ ХАРАКТЕРИСТИК НОРМАЛЬНЫХ И ОПУХОЛЕВЫХ ТКАНЕЙ В МИЛЛИМЕТРОВОМ ДИАПАЗОНЕ ЧАСТОТ

The regularities of differences are identified and the prospects marked for the use of extremely high frequency to detail representations about the features of the spectral characteristics of the tumor and non-tumor tissues.Выявлены закономерные отличия и отмечены перспективы использования крайне высоких частот для детализации представлений об особенностях спектральных характеристик опухолевых и неопухолевых тканей

Diffuse x-ray scattering from inclusions in ferromagnetic Ge1-xMnx layers

Magnetic properties of Ge1-xMnx epitaxial layers with a Mn content of a few percents are substantially influenced by inhomogeneities in the distribution of Mn atoms in the Ge lattice. Depending on the substrate temperature during molecular-beam epitaxial fabrication, apparently cubic, coherent Mn-rich clusters or incoherent precipitates consisting of the hexagonal, intermetallic Mn5Ge3 phase can occur in a defect free, diamond lattice Ge matrix. In this work, we apply synchrotron x-ray diffraction in grazing-incidence geometry to probe the diffuse scattered intensity of the distorted Ge host lattice. Based on a theoretical description of the scattered intensity we derive quantitative information on the lattice mismatch between the Mn inclusions and the Ge lattice, as well as on the average size of the inclusions and the average Mn content within the inclusions

Palladium(II) Complexes Compounds with L-Threonine and Cytosine

The palladium(II)-L-threonine(cytosine)-water and palladium(II)-L-threonine-cytosine-water systems are studied by pH-metric titration. The formation constants of complexes with Pd(II) : Thr = 1 : 1 and 1 : 2 (logK1 = 6.91 and logK2 = 4.09); Pd(II) : Cyt = 1 : 1 and 1 : 2 (logK1 = 10.68 and logK2 = 8.66), as well as the mixed-ligand complexes Pd(II) : Thr : Cyt = 1 : 1 : 1 (logβ = 18.79), are determined. The Pd(ThT)Cl2 · H2O, Pd(Thr)2Cl2, Pd(Cyt)Cl2 · H2O, Pd(Cyt)2Cl2, and Pd(Thr)(Cyt)Cl2 complexes are synthesized by reacting H2PdCl4 aqueous solution and organic reagents. The IR spectra (400-4000 cm-1) point to the coordination of threonine to palladium(II) through the amino group; and cytosine, through the nitrogen-3 atom of the heterocycle. Thermolysis of these compounds leads first to PdO at ∼ 540°C and then to metallic palladium at temperatures higher than 780°C

Palladium(II) Complexes Compounds with L-Threonine and Cytosine

The palladium(II)-L-threonine(cytosine)-water and palladium(II)-L-threonine-cytosine-water systems are studied by pH-metric titration. The formation constants of complexes with Pd(II) : Thr = 1 : 1 and 1 : 2 (logK1 = 6.91 and logK2 = 4.09); Pd(II) : Cyt = 1 : 1 and 1 : 2 (logK1 = 10.68 and logK2 = 8.66), as well as the mixed-ligand complexes Pd(II) : Thr : Cyt = 1 : 1 : 1 (logβ = 18.79), are determined. The Pd(ThT)Cl2 · H2O, Pd(Thr)2Cl2, Pd(Cyt)Cl2 · H2O, Pd(Cyt)2Cl2, and Pd(Thr)(Cyt)Cl2 complexes are synthesized by reacting H2PdCl4 aqueous solution and organic reagents. The IR spectra (400-4000 cm-1) point to the coordination of threonine to palladium(II) through the amino group; and cytosine, through the nitrogen-3 atom of the heterocycle. Thermolysis of these compounds leads first to PdO at ∼ 540°C and then to metallic palladium at temperatures higher than 780°C

APPLICATION OF MILLIMETER WAVE′S RADIOMETRIC SYSTEM FOR DETECTION OF MALIGNANT NEW GROWTHS OF MAMMARY GLANDS

Developed and investigated radiometric system EHF (extremely high frequency) range for the diagnosis of tissue samples affected by carcinoma. EHF system are significantly higher than in the possibility of identifying a lower frequency range, as in UHF band (UHF band) and UHF (ultra high frequency) resolution of 1-3 mm are impossible. It was established that the affected carcinoma tissue samples are 3 dB lower transmittance compared to unaffected tissues. Analysis of the dependency of the harmonic components of the modulation signal passing through the examined tissue samples shows dramatic difference in the behavior of the harmonic components of the frequency domain. This phenomenon appears to altered tissue the presence of slumps that due to the interaction of electromagnetic waves with the tissue samples may be explained by the so-called stochastic resonance effect