The hydrothermal synthesis of a hierarchically organized nanocomposite based on nickel–cobalt carbonate hydroxide hydrate of composition M(CO3)0.5(OH)·0.11H2O (where M is Ni2+ and Co2+) and nickel–cobalt layered double hydroxides (NiCo-LDH) was studied. Using synchronous thermal analysis (TGA/DSC), it was determined that the material retained thermal stability up to 200 °C. The crystal structure of the powder and the set of functional groups in its composition were determined by X-ray diffraction analysis (XRD) and Fourier transform infrared spectroscopy (FTIR). The resulting hierarchically organized nanopowder was employed as a functional ink component for microplotter printing of an electrode film, which is an array of miniature planar structures with a diameter of about 140 μm, on the surface of a nickel-plated steel substrate. Using scanning electron microscopy (SEM), it was established that the main area of the electrode “pixels” represents a thin film of individual nanorods with periodic inclusions of larger hierarchically organized spherical formations. According to atomic force microscopy (AFM) data, the mean square roughness of the material surface was 28 nm. The electrochemical properties of the printed composite film were examined; in particular, the areal specific capacitance at different current densities was calculated, and the electrochemical kinetics of the material was studied by impedance spectroscopy. It was found that the electrode material under study exhibited relatively low Rs and Rct resistance, which indicates active ion transfer at the electrode/electrolyte interface.
Working conditions in forge-and-press and foundry manufactures on many hygienic indications exceed admissible parameters that can negatively affect on health and state of health of workers. Profound studying of technological process, factors of the industrial environment have allowed to estimate working conditions of workers of studied shops according to modern representations on weight and intensity, harmfulness and danger with an estimation of risk of development of a pathology as a result of influence of factors of the industrial environment.
Рязанский государственный медицинский университет имени академика И.П. Павлова С помощью современных методов изучены условия труда и степень влияния производственных факторов на организм рабочих «горячих» цехов предприятия машиностроения. Представлены данные об исследовании функциональных показателей основных систем организма в динамике рабочих смен, недель. Ключевые слова: трудовой процесс, физиологические показатели, производственная среда, рабочие.
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