The study of titanium oxynitride coatings solubility deposited by reactive magnetron sputtering

To improve hemocompatibility of cardiovascular stents the coatings based on titanium oxides and oxynitrides were used. In the present work the morphology, surface properties (wettability and surface energy), and in vitro solubility of the ternary system Ti-N-O coating were investigated. Experimentally, low dissolution rate of the coating in saline NaCl (0,9%) was confirmed. Instrumental methods of quantitative analysis (XRF, AES) revealed that the Ti-N-O coating is chemical-resistant and does not change the qualitative and quantitative composition of body fluids

Halogen Hybrid Flow Batteries Advances for Stationary Chemical Power Sources Technologies

This review aims to highlight the current advances in hybrid redox flow battery (HRFB) technology, encompassing one of the best combinations of efficiency, cost and flexibility due to its module construction, which offers independent scaling of power density and energy capacity. This work emphasizes the interest of the scientific community both in (i) studying the properties and principles of HRFB operation in order to improve commonly proposed systems, and in (ii) the development of energy storage devices with new reagent types or RFB concepts. The data provided enhances the reader to conclude whether novel concepts in halogen oxidizers utilization could help to overcome the problem of insufficient power and energy densities of common RFB

Structural features and nitrogen positions in titanium oxynitride films grown in plasma of magnetron discharge

The paper addresses the results of the analysis of the structural features of nitrogen-containing titanium oxides films, deposited by reactive magnetron sputtering. The films have a nanocrystalline two-phase structure and consist of anatase and rutile crystallites, regardless of the coating deposition regimes. No traces of titanium nitride phase are found in the film and nitrogen atoms in oxide form are localized at the grain boundaries of the deposited film

Assessment of the efficacy of a peroral anticoagulant after surgical resection of gastric cancer

Aims Patients suffering from gastric cancer have a high risk of postoperative thrombotic complications and often use anticoagulants. Direct oral anticoagulants absorb in the proximal region of the digestive tract. Consequently, a reduction in anticoagulating activity is possible. In the present research given is an evaluation of the anti-Xa activity upon administration of Rivaroxaban at a fixed dose of 20 mg once daily in oncological patients after gastrectomy or cases of extensive resection of the stomach. Materials and methods The study cohort covered 20 patients after surgical treatment of gastric cancer having normal renal/hepatic function. The patients received Rivaroxaban at a fixed dose of 20 mg once daily to prevent venous thromboembolic complications. Results When evaluating absorption and bioavailability of 20 mg of Rivaroxaban sufficient anti-Xa blood plasma activity (1.37±0.16 UI/ml) was recorded. However, in 5 patients the absorption of a therapeutic agent was not-critical, their average anti-Xa activity being 0.32 ± 0.14 UI/ml. Conclusion Absorption of peroral anticoagulants in most patients who have experienced extensive stomach resections, is satisfactory. However, the level of anticoagulant activity showed significant changeability, as in a quarter of patients malabsorption of rivaroxaban was observed. Thus, when prescribing anticoagulant tablets to this category of patients it is necessary to control the absorption of medical drugs