Uncertainty of measurement of ionic calcium in milk measured by ISE: a Monte-Carlo insight.

Practically almost all technological processes that affect the milk influence the content of ionic calcium present in it. The most popular method to determine ionic calcium is direct potentiometry using ion-selective electrodes (ISEs). This study proposes an approach to evaluate the measurement uncertainty for the determination of ionic calcium by the ISE method based on JCGM 100 - evaluation of measurement data - guide to the expression of uncertainty in measurement (GUM) with the simulation of the total uncertainty by the Monte Carlo method.

Heavy metals in municipal waste: the content and leaching ability by waste fraction.

Today, heavy metals remain crucial pollutants in municipal waste due to their danger and leaching behavior. The purpose of this study is to analyze the sources of heavy metals in mixed municipal waste, including from recently introduced products, and to identify their composition and leaching properties in various fractions. The author has measured the concentration of four heavy metals (lead, cadmium, nickel, and chromium) in various fractions sampled from an operational municipal waste facility in the town of Pirna (Saxony, Germany).

[Treatment of paracolostomic hernias using polypropylene mesh].

It was analyzed the results of treatment of 23 patients with large paracolostomic hernias. Twenty patients underwent colostomy suturing and hernial ring Onlay-plasty with polypropylene mesh without tension. Onlay-plasty of hernial ring with own tissues and polypropylene mesh and colostomy reconstruction outside of implant were performed in 3 patients.

[VARIANT OF HEMOSTATIC SUTURE IN MILLIGAN-MORGAN OPERATION].

On the basis of great clinical experience, the authors developed the method of choice of optimal surgical aid and suggested an original surgical method of treatment of complicated hemorrhoid. The results obtained were analyzed. There was reliably noted, that the quantity of early postoperative complications decreased, an expression of pain syndrome was lower and there were no relapses during three-year of follow-up.

A TPD-MS study of the interaction of coumarins and their heterocyclic derivatives with a surface of fumed silica and nanosized oxides CeO2/SiO2, TiO2/SiO2, Al2O3/SiO2.

The interactions between coumarins and the surface of fumed SiO(2), CeO(2)/SiO(2), TiO(2)/SiO(2) and Al(2)O(3)/SiO(2) were assessed by means of temperature-programmed desorption mass spectrometry. The different stages of the thermolysis of coumarin were identified and an analysis of the underlying reactions was performed. The kinetic parameters of the involved reactions were thus obtained.