Time- and Temperature-Dependent Luminescence of Manganese Ions in Ceramic Magnesium Aluminum Spinels.

Samples of magnesium aluminum spinel ceramics doped with manganese ions were prepared by a high-temperature solid-state reaction method; their potential as red-emitting phosphors was analyzed using a time-resolved luminescence spectroscopy technique, from room temperature to 10 K. It was found that in the red spectral range, the luminescence spectra of manganese ions in the MgAlO spinel showed a narrow band peaking at 651 nm due to the emission of Mn and a broader emission band in the region of 675 ÷ 720 nm; the ratio of intensities for these bands depends on the synthesis conditions. By applying a special multi-step annealing procedure, the MgAlO:Mn phosphor containing only tetravalent manganese ions, Mn, was synthesized.

[Disorders of the anxiety-depressive spectrum in inflammatory bowel diseases (psychosomatic correlations)].

Aim: To systemize anxiety-depressive disorders in patients with inflammatory bowel diseases (IBD) and to reveal clinically relevant psychosomatic correlations.

Material And Methods: Fifty inpatients with IBD, including 32 with ulcerative colitis and 19 with Crohn's disease, were examined using clinical and follow-up methods.

Results And Conclusion: Affective mental disorders (depressions of various structures of different genesis) were found in most (72%) of cases.

Ultrasound examination with contrast in the diagnosis of inflammatory bowel disease. The results of the pilot study.

Aim: Assessment of diagnostic significance of informativeness and security of ultrasonography with contrast enhancement drug SonoVue in the diagnosis of Crohn's disease (CD) and ulcerative colitis (UC).

Materials And Methods: The pilot conducted a prospective study which involved 15 patients with inflammatory bowel disease (IBD). All patients gave written consent to participate in the study and processing of personal data.

Band tail absorption saturation in CdWO4 with 100 fs laser pulses.

The decay kinetics of the excitonic emission of CdWO4 scintillators was studied under excitation by powerful 100 fs laser pulses in the band tail (Urbach) absorption region. A special imaging technique possessing both spatial and temporal resolution provided a unique insight into the Förster dipole-dipole interaction of self-trapped excitons, which is the main cause of the nonlinear quenching of luminescence in this material. In addition, the saturation of phonon-assisted excitonic absorption due to extremely short excitation pulses was discovered.

[The etiologic diagnostics of rhinosinusitis using clinical laboratory methods].

The examination was applied to 81 children aged 5-15 years, including 64 children with diagnosis of rhinosinusitis. The control group consisted of 17 healthy children. The set of laboratory clinical diagnostic techniques was applied to detect the causes of pathology.