Analysis of the Retailoring Methods and the Workability of Deposited Surfaces

This work is devoted to the conduction of the analysis of methods and means of retailoring of parts in the conditions of technical repair facilities as well as of the workability of deposited surfaces. The results of the research show that the most important processing methods of reconditioning of component parts severely worn in the course of exploitation are various ways of deposit welding with subsequent mechanical handling. Furthermore, low efficiency of mechanical handling of retailored parts' surfaces is conditioned on their low workability that results from the specific status of weld pad

Formation of concept of provision of economic security of organization : personnel aspect

Under the modern business conditions, characterized by constant changes and increase of the quantity of risk factors, organizations – for the purpose of conduct of successful activities – have to pay special attention to issues of provision of economic security. The article proves importance of personnel aspect of economic security of organization is proved and deter-mines main causes of personnel risks. Classification of factors, which influence personnel security of organization, is shown. For the purpose of minimization of personnel risks and prevention of threats, the authors offer regulation of personnel labor: special attention is paid to such component of personnel security as “selection of employees”, which, in authors’ opinion, is the most vulnerable aspect. As a result of thorough analysis of collected material, the authors offer a scheme of the process of management of personnel security with specific stages and sub-systems of management.peer-reviewe

Neuropsychological diagnostics and rehabilitation for patients with disorders of executive functions in brain diseases of various etiology

Background. Disorders of regulatory (control) functions are often observed in neuropsychological practice in brain lesions. This fact determines the high practical significance of timely neuropsychological diagnosis and rehabilitation for this category of patients. Daily functioning with impaired regulatory (control) functions is carried out in conditions of limited capabilities of the patient, which significantly worsens the quality of his/her life and the social well-being of the family. Realisation of the patient’s rehabilitation potential is impossible without taking into account psychological and behavioural features, as well as organising a partnership with the immediate social environment and with a multidisciplinary team of specialists. Objective. The article aims to analyse and generalise diagnostic and rehabilitation experience accumulated in neuropsychology, as well as to develop quality criteria for neuropsychological diagnostics and rehabilitation of patients with disorders of regulatory (control) functions arising from brain injuries. Results. The analysis of applied research and practical manuals was carried out. On this basis, recommendations on diagnostics of regulatory (control) function disorders were developed. The main methodical techniques of rehabilitation work, which demonstrated their effectiveness, were generalised. Conclusion. The criteria of neuropsychological assistance highlighted in the article can be recommended for use by a practicing clinical psychologist when working with patients with disorders of control functions resulting from brain damage

Attenuation of Combined Nickel(II) Oxide and Manganese(II, III) Oxide Nanoparticles' Adverse Effects with a Complex of Bioprotectors

Stable suspensions of NiO and Mn3O4 nanoparticles (NPs) with a mean (±s.d.) diameter of 16.7 ± 8.2 and 18.4 ± 5.4 nm, respectively, purposefully prepared by laser ablation of 99.99% pure nickel or manganese in de-ionized water, were repeatedly injected intraperitoneally (IP) to rats at a dose of 2.5 mg/kg 3 times a week up to 18 injections, either alone or in combination. A group of rats was injected with this combination with the background oral administration of a “bio-protective complex” (BPC) comprising pectin, vitamins A, C, E, glutamate, glycine, N-acetylcysteine, selenium, iodide and omega-3 PUFA, this composition having been chosen based on mechanistic considerations and previous experience. After the termination of injections, many functional and biochemical indices and histopathological features (with morphometric assessment) of the liver, spleen, kidneys and brain were evaluated for signs of toxicity. The Ni and Mn content of these organs was measured with the help of the atomic emission and electron paramagnetic resonance spectroscopies. We obtained blood leukocytes for performing the RAPD (Random Amplified Polymorphic DNA) test. Although both metallic NPs proved adversely bio-active in many respects considered in this study, Mn3O4-NPs were somewhat more noxious than NiO-NPs as concerns most of the non-specific toxicity manifestations and they induced more marked damage to neurons in the striatum and the hippocampus, which may be considered an experimental correlate of the manganese-induced Parkinsonism. The comparative solubility of the Mn3O4-NPs and NiO-NPs in a biological medium is discussed as one of the factors underlying the difference in their toxicokinetics and toxicities. The BPC has attenuated both the organ-systemic toxicity and the genotoxicity of Mn3O4-NPs in combination with NiO-NPs