Trace elements appears to play an important part in cancer and trace element requirement is a consequence of this disease. Rechenberger 1 has de­ monstrated experimentally that the iron and cop­ per content of the blood serum are always disturbed and he showed that cancer elevates the copper level of the serum in all cases, and depresses the iron content to a level well below average, except in...

In order to reduce the operating temperature of solid oxide fuel cells (SOFCs), novel electrolyte materials based on CeO2 and BaCeO3 are being developed in the scientific realm. In this context, we propose a new methodology for preparing the nano-ceramic composite materials such as BaCe0.9Gd0.9O3-δ – Ce0.9Gd0.9O2-δ (BCGO–CGO) and BaCe0.8Sm0.2O3-δ – Ce0.8Sm0.2O2-δ (BCSO – CSO) as possible elec...

Preparation of Mn/TiO2, Mn-Fe/TiO2, and Mn-Fe-Ce/TiO2 by the deposition-precipitation (DP) method can afford very active catalysts for low-temperature NH3-SCR (selective catalytic reduction NO with NH3). The effect precursor choice (nitrate vs. acetate) Mn, Fe, Ce on physiochemical properties including thermal stability resulting SCR activity were investigated. materials characterized N2-Physis...

A simple, rapid, accurate and precise spectrophotometric method is proposed for determination of pyridoxine hydrochloride (Vitamin B6) in pure form and in its pharmaceutical preparations and serum. The method is based on the oxidation-reduction reaction between vitamin B6 and cerium (IV) ion (ceric ion), then the subsequent reaction of cerium (III) with arsenazo III reagent in acidic medium in ...

Cerium-based compounds have been studied for decades as non-toxic candidates the protection of aerospace aluminium alloys (AAs) like AA2024-T3. However, complex heterogeneous microstructure these has hindered a thorough understanding subsequent stages corrosion provided by this class inhibitors. Thus, work is devoted to unravelling interaction mechanisms different intermetallic particles (IMPs)...

Present studies show that nitrate accumulation is the major factor influencing the water uptake by vegetables, but there is lack of knowledge on how the relationship between nitrate and water concentrations in different vegetable tissues. We determined nitrate accumulation and water content in vegetables of rape, Chinese cabbage, and spinach under different nitrogen levels (experiment I), 29 sp...

A series of the mixed oxides iron and cerium, with an iron(III) oxide content ranging from 0 wt% to 100 were tested as oxygen carriers in chemical looping dry reforming methane (CL-DRM). The reactivity during CL-DRM significantly increased when cerium are forming a oxide. By careful control Fe2O3/CeO2 mass ratio, initial oxidation state reaction time activity carrier material can be adjusted so...

Increasing the molecular accumulation and density of high-energy substances have a determinative role in improving the performance and intensity of energy release. Therefore, it is possible to increase the density of high-energy materials if the high-energy molecules can be arranged around a metal core as coordinated molecules. The aim of this project was to synthesize energetic complexes of cy...