Generation and Analysis of Wire Rope Digital Radiographic Images

The paper is dealt with different structures of the digital radiographic system intended for wire rope radiography. The scanning geometry of the wire rope is presented and the main stages of its digital radiographic image generation are identified herein. Correction algorithms are suggested for X-ray beam hardening. A complex internal structure of the wire rope is illustrated by its 25 mm diameter image obtained from X-ray computed tomography. The paper considers the approach to the analysis of digital radiographic image algorithms based on the closeness of certain parameters (invariants) of all unit cross-sections of the reference wire rope or its sections with the length equaling to the lay. The main invariants of wire rope radiographic images are identified and compared with its typical defects

Palladium catalysts supported on carbonized porous silicon for H2/O2 recombination

The article presents new research on the use of catalysts for H2/O2 recombination. The study emphasizes the importance of ensuring safe production, storage, and utilization of green hydrogen by recombining gas leaks. We suggest the utilization of innovative palladium catalysts for low-temperature hydrogen oxidation. These catalysts leverage molecular oxygen from the air to efficiently recombine small amounts of leaked hydrogen, resulting in the production of water. Recombination catalysts with a small amount of dispersed palladium metal on an inert support are the most efficient for production to prevent the risks of hydrogen explosion and fire. This study is focused on the development of laboratory prototypes for the H2/O2 recombination catalysts. We identified a potential catalytic system through monitoring of current literature to propose efficient hydrogen recombination catalysts. We present an optimized method for coating the surface of porous silicon nanoparticles with carbon layers, and introduce a technique for the production of supported palladium recombination catalysts. The proposed catalysts efficiently facilitate the recombination of hydrogen in lean air-hydrogen gas mixtures, offering a cost-effective alternative to more expensive commercial catalysts. Furthermore, they exhibit remarkable efficiency at both room and elevated temperatures. The final remarks underscore the necessity of creating new Pd catalysts to guarantee the secure storage and usage of hydrogen

Structure of disturbances of carbohydrate metabolism at children of patients with the hemoblastosis

Glucocorticosteroid drugs are one of the basic agents in the treatment of acute lymphoblastic leukemia, often leading to disturbance of carbohydrate metabolism. In these patients require dynamic control of blood glucose, timely detection and correction of disorders of carbohydrate metabolismГлюкокортикостероидые препараты являются одними из базисных препаратов в лечении острого лимфобластного лейкоза, зачастую приводящие к нарушениям углеводного обмена. У данной категории больных требуется динамический контроль гликемии, своевременное выявление и коррекция нарушения углеводного обмена