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The occurrence of nonconformities in prosthetics or medical instruments as a result of the manufacturing process or final machining (finishing) may lead to the decision of not using them in the medical process. The present paper aims to analyze the welding reconditioning possibilities in order to ensure the necessary geometrical characteristics, using the method of finite element analysis (FEA), of the interlocking intramedullary nail prosthetics made of titanium or titanium alloys. After identifying the nonconfor...

Corrosion is the deterioration of a metal as a result of chemical reactions between it and the surrounding environment. Is a natural process, which converts a refined metal to a more chemically-stable form, such as its oxide, hydroxide, or sulfide. It is the gradual destruction of materials (usually metals) by chemical and/or electrochemical reaction with their environment. Biomaterials are used to replace a part of the body functions lost due to illness or to improve functions and to correct anomalies. The import...

In this paper, thin films TiCx was coated by chemical vapour deposition method, and various duty cycles were carried out in order to observe the influence of this parameter on residual stress and tribology behaviours. The duty cycles were 35, 43 and 50% at 500uC operating temperature. Therefore, wear behaviour, hardness and chemical analyses of TiCx coating were characterised, and it was found that the residual stresses in the coating were compressive, which were- 1.4189, - 0.2985 and -0.1749 MPa at three differen...

Cyclophosphamide - N,N - bis (2 - chloroethyl) - 1,3,2 пїЅ oxazaphosphinan пїЅ 2 -amine 2-oxide is one of the widely used drugs in cancer treatment, which presents genotoxic, carcinogenic, mutagenic and teratogenic potential. Previously reported studies proved that long time exposure to cyclophosphamide and their metabolites leads to negative effects upon the environment and human health. Therefore, there is a need for more performant treatment processes for cyclophosphamide advanced degradation from which heterog...

The results of experimental research of hydration process of highly dispersed systems based on saponit-containing waste, extracted as the solid phase of the recycled water suspension kimberlite ore enrichment process of the diamond industry. Saponitcontaining sludge was dehydrated and subjected to mechanical activation on the planetary ball mill. Mechanical activation of raw material more than 60 minutes does not increase the specific surface area of samples was found. Specific surface area is achieves the maximum...

The paper marks evaluation of existing me thodological tools for the formation of polymer composites, summarizes in brief the known technical designs and recent points of view for functioning of the old processi ng methods. Further, to make these systems usable in a practical working environment we will focus on the implementation of well- established utensils and ou tline possible new viewpoints for the modern revelations. Here, we will involve identified developments and routine utilizations, and will propose pr...

Mining and Metallurgy Institute in Bor, Se rbia, has successfully dealt for many years with processing of precious metals. Platinum and palladium have originated from the raw materials of the Bor deposit. By furt her refining in the Institute, the mentioned platinum metals are transformed into high-pu rity metals of which products for various purposes are manufactured. This paper presents the results of comparativ e analysis the high temperature strength of platinum and palladium. The limit of tensile strength as ...

One-step vapor phase oxidation of aliphatic hydrocarbons over nanosized gold catalysts by using oxygen is carried out. Selective oxidation of propylene to propylene oxide, propane to acetone and isobutene to t-butanol with hydrogen- oxygen mixture in flow conditions is investigated. The reaction occurs at the interface perimeter of the support around the gold particles. The activity of these catalysts can be attributed to synergetic effects between gold and titanium. Adsorption of nitrogen oxide over the so synthe...

In this paper we emphasize the main methods of data fusion with potential applications in navigation systems with micro and nano sensors. In the introduction are outlined some basic features of data fusion process. Further the work is st ructured as it follows: 2) Architectures for sensor data fusion, 3) M odels for sensor data fusion; 4) Sensor data fusion methods, 5) Sensor management. At the point 2 of this paper are presented information regarding different types of data fusion architectures, and also the crit...

The paper deals with the description of actual technologies and trends in the development of miniaturized accelerometers used in inertial naviga tion systems. At the technology levels discussions are made ar ound the micro-electro-mechanical systems (MEMS), nano- electro-mechanical systems (NEMS), micro-opto-electro-mechanical systems (MOEMS), and nano-opto-electro- mechanical systems (NOEMS). Miniature accelerometers use two main methods of de tection: 1) moving or bending under the action of an acceleration plat...

Complex uranium ores of Kazakhstan are a potential raw source of gold and RRE, for example, scandium. Experime ntal researches on opening of ores various leaching systems are spent. It is shown, that uran ium accompanying metals can be extracted in solutions.

Tin selenide SnSe was synthesized from tin and selenium powder precursors by high- energy milling in pl anetary ball mill. X-ray diffractio n analysis confirmed that an orthorhombic tin selenide SnSe phase was formed already after 4 min of milling. 119Sn Mössbauer spectroscopy documented the values of SnSe isomer shifts corresponded to Sn in the oxidation state II. The size and morphology of tin selenide particles were studied by specific surface area measuremen ts, and transmission electron microscopy. Specific ...

The main aim of the work is theoretical and experimental research of nanocomposite systems formation process on the model of chromium electrolytic coatings, ascertainment of laws and mechanis ms of silicon dioxide nano-sized particles influence on the structure and properties of metal. We researched the process of electrolytic formation of chrome - silicon dioxide nanocomposite systems and nanostructured composite electrolytic coatings with silicon dioxide (3-50 nm) used as a dispersed phase. Methods of the resear...