TiO2 P-25 anatase rapid precipitation from water by use of struvite formation.

UV(360nm) irradiation of TiO(2) P-25 nanoparticle in water suspension is used for photocatalytic mineralization of pollutants or inactivation of microorganisms. Removal of TiO(2) particles from large volumes of water following photocatalytic process is problematic due to their nano-size. So far no chemical methods are available for TiO(2) rapid precipitation while filtration or centrifugation is not feasible because of high cost and limited performance. In the present study TiO(2) was rapidly precipitated from water suspension by formation of the mineral struvite. Addition of Mg, P, and NH(4)(+) at stochiometric rates of 1:1:1 at pH>8.3 resulted in TiO(2) entrapment into struvite formed flocs and rapid precipitation. Struvite sludge formed and precipitated was observed under HSEM revealing TiO(2) entrapment into struvite mineral.

[The value of irrigation]. / Wert der Irrigation.

Twenty percent of our patients who have had colostomy use irrigation to regulate the bowels. This decision is made by the patient himself after careful deliberation. By means of an irrigation set the large intestine is irrigated with approximately 1-1.5 l of water at body temperature. Subsequently there is a stool-free period of 24-28 h and a reduction of flatulence. The duration of irrigation is 45-60 min. Side effects are occasionally pressure sensation and mild convulsive symptoms, but there are no significant complications. Irrigation can begin after complete healing of the stoma, but is absolutely contraindicated in inflammatory intestinal diseases and relatively contraindicated in prolapse, hernia, stenosis, and intestinal damage by radiation.

[Clinical and serologic diagnosis of measles in children vaccinated against the disease]. / O klinicheskoi i serologicheskoi diagnostike kori u privitykh protiv étoi infektsii detei.

At the period of mass immunization of children with live measles vaccine clinical symptoms of measles, their intensity and sequence apparently displayed some changes; therefore, serological diagnosis is more reliable in comparison with the clinical one. Result of serological study of 93 coupled blood sera of children who fell sick with the diagnosis of measles showed that only 54.3% of those vaccinated earlier and 49.2% of nonvaccinated children sustained measles, whereas the rest had had exanthematous disease of other etiology. All the children had fever (the majority not over 38.5 degrees C) and rash; other clinical signs of measles were of different intensity in the vaccinated and nonvaccinated children. Apparently such pathognomonic signs of measles as rash, Filatov's sports and conjunctivitis could not serve at present as a reliable criterion of clinical measles diagnosis. The majority of children vaccinated before who contracted the disease responded to the infection by an earlier and more intensive production of antibodies than nonvaccinated children who contracted the disease, this pointing to the possibility of manifestation in them of the clinically expressed booster-effect. The data obtained indicated a marked difficulty of clinical differential diagnosis of measles.

[Clinical aspects and pathogenesis of paramyloidosis in plasmacytoma]. / Zur Klinik und Pathogenese der Paramyloidose beim Plasmozytom

In the first phase of inhalation due to the sedimentation of droplets against the walls of the atomizer arises a high loss of fluid in the apparatus. When the air flow was regular a high scattering volume of the consumed fluid quantity from the remedy store container was obtained. In the short-time inhalation this method cannot be used for the estimation of the quantity of medicaments applied to the patient. An exact dosage is possible only by measuring the fog flow and when the exact density of fog is known. When the presuppositions mentioned are not given, the informations about the virtual density of fog which was calculated by means of the analysis of regression, may be obtained.