19 results match your criteria: "Polzunov Altai State Technical University[Affiliation]"

Ni-B-PTFE Nanocomposite Co-Deposition on the Surface of 2A12 Aluminum Alloy.

Materials (Basel)

July 2024

Hubei Digital Textile Equipment Key Laboratory, Wuhan Textile University, Wuhan 430073, China.

The spinning cup, a crucial component of textile equipment, relies heavily on 2A12 aluminum alloy as its primary raw material. Commonly, electroplating and chemical nickel-phosphorus (Ni-P) plating are employed to improve the surface characteristics of the object. Nevertheless, due to the growing expectations for the performance of aluminum alloys, the hardness and wear resistance of Ni-P coatings are no longer sufficient to fulfill industry standards.

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Bentonitic clay and wood sawdust are natural materials widely available in nature at low cost with high heavy metals sorption properties that, in this work, were combined to achieve an effective composite biosorbent with high sorption properties and enhanced mechanical stability. Pine, aspen, and birch wood sawdust, as well as different bentonite clays and different sawdust modification methods (HPO or HCl) were used for preparing new composite biosorbents. A mixture of wood sawdust and bentonite in a ratio of 2:1 was used.

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Review of Current Prospects for Using -Based Polymers.

Polymers (Basel)

July 2023

Laboratory of Bioconversion, Institute for Problems of Chemical and Energetic Technologies, Siberian Branch of the Russian Academy of Sciences (IPCET SB RAS), Biysk 659322, Russia.

Carbon neutrality is a requisite for industrial development in modern times. In this paper, we review information on possible applications of polymers from the energy crop in the global industries, and we highlight the life cycle aspects of in detail. We discuss the benefits of cultivation on unoccupied marginal lands as well as the rationale for the capabilities of regarding both soil carbon storage and soil remediation.

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Polymer binders based on epoxy resins have unique properties that contribute to their use in many composite industries. The potential of using epoxy binders is due to their high elasticity and strength characteristics, thermal and chemical resistance, and resistance to climatic aging. This is the reason for the existing practical interest in modifying the composition of epoxy binders and understanding the strengthening mechanisms in order to form reinforced composite materials with a required set of properties based on them.

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Composite materials are gaining increasing attention from researchers worldwide due to their ability to offer tailored properties for various technical challenges. One of these promising fields is metal matrix composites, including carbon-reinforced metals and alloys. These materials allow for the reduction of density while simultaneously enhancing their functional properties.

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An in situ synchrotron experimental study of phase formation dynamics in clad mechanocomposites of Ti-Al systems during high-temperature synthesis was performed. Cladding of the obtained mechanocomposites was carried out with an SiO target, with a deposition time of 40 min. The high-temperature synthesis was performed using the thermal explosion method based on a microwave induction heater in the in situ mode on an experimental setup adapted to synchrotron radiation time-resolved diffractometry.

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One of the ways to enhance the yield of bacterial cellulose (BC) is by using dynamic aeration and different-type bioreactors because the microbial producers are strict aerobes. But in this case, the BC quality tends to worsen. Here we have combined static culture with aeration in the biosynthesis of BC by symbiotic Sa-12 for the first time.

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The motivation of the presented paper is the desire to create a universal tool to analyse the process of austenite decomposition during the cooling process of various steel grades. The presented analysis concerns the application of Recurrent Artificial Neural Networks (RANN) of the Long Short-Term Memory (LSTM) type for the analysis of the transition path of the cooling curve. This type of network was selected due to its ability to predict events in time sequences.

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Confectionery products are in constant steady demand among various categories of consumers. This group of foodstuffs has a low nutritional and high energy value, contains a large amount of fats and carbohydrates with an insignificant content of essential micronutrients. In this regard, research on the modernization of recipes and technologies for confectionery products enriched with essential nutrients, especially with the use of secondary products of food processing, remains relevant.

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Scale-Up of Biosynthesis Process of Bacterial Nanocellulose.

Polymers (Basel)

June 2021

Laboratory of Bioconversion, Institute for Problems of Chemical and Energetic Technologies, Siberian Branch of the Russian Academy of Sciences (IPCET SB RAS), 659322 Biysk, Altai Krai, Russia.

Bacterial nanocellulose (BNC) is a unique product of microbiological synthesis, having a lot of applications among which the most important is biomedicine. Objective complexities in scaling up the biosynthesis of BNC are associated with the nature of microbial producers for which BNC is not the target metabolite, therefore biosynthesis lasts long, with the BNC yield being small. Thus, the BNC scale-up problem has not yet been overcome.

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Extended cultivation with multiple removal of BC pellicles is proposed herein as a new biosynthetic process for bacterial cellulose (BC). This method enhances the BC surface area by 5-11 times per unit volume of the growth medium, improving the economic efficiency of biosynthesis. The resultant BC gel-films were thin, transparent, and congruent.

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Improving the quality of nutrition for children with gluten intolerance in preschool institutions is an important state task. Relevant adjustment of the diet enables to reduce the risk of the celiac syndrome. Balanced nutrient composition of diet is necessary for the harmonious growth and development of a child.

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Bacterial Nanocellulose Nitrates.

Nanomaterials (Basel)

November 2019

Laboratory of Bioconversion, Institute for Problems of Chemical and Energetic Technologies, Siberian Branch of the Russian Academy of Sciences (IPCET SB RAS), 659322 Biysk, Altai Krai, Russia.

Bacterial nanocellulose (BNC) whose biosynthesis fully conforms to green chemistry principles arouses much interest of specialists in technical chemistry and materials science because of its specific properties, such as nanostructure, purity, thermal stability, reactivity, high crystallinity, etc. The functionalization of the BNC surface remains a priority research area of polymers. The present study was aimed at scaled production of an enlarged BNC sample and at synthesizing cellulose nitrate (CN) therefrom.

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In situ synchrotron studies of structure and phase formation dynamics in mechanically activated (t = 7 min, power density 40 g) and mechanically activated with subsequent irradiation by γ-quanta Co powder mixture (Ti 64 wt% + Al) during high-temperature synthesis by the method of thermal explosion using induction heating are described. In situ high-temperature synthesis was carried out on the created experimental complex adapted for synchrotron X-ray diffraction methods. The sequence of formation and time-temperature interval of the metastable and main phases were determined.

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For the first time, orthogonally substituted azole-carboxylate adamantane ligands were synthesized and used for preparation of coordination polymers. The angle-shaped ligands were prepared by the reaction of 1-adamantanecarboxylic acid and azoles (1-1,2,4-triazole, 3-methyl-1-1,2,4-triazole, 3,5-dimethyl-1-1,2,4-triazole, 1-tetrazole, 5-methyl-1-tetrazole) in concentrated sulfuric acid. Variation of the solvent and substituents in azole rings allowed to prepare both 1D and 2D copper(II) and nickel(II) coordination polymers, [Cu(trzadc)(HO)]∙DMF∙0.

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An in situ synchrotron study of the specific features of the phase formation dynamics in mechanically activated 16 wt% Al + Ti powder composition is described, the high-temperature synthesis being carried out under the condition of high volume inflammation by means of inductive heating. The kinetics of the phase formation were registered with an experimental complex, especially designed, constructed and adjusted for the method of dynamic diffraction analysis in synchrotron radiation beams. It has been experimentally in situ shown that increasing the time of mechanical activation of the initial powder mixture reduces the temperature at which components start to react and the time of realization of the high-temperature synthesis.

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Berries of a honeysuckle are valuable raw materials which contain biologically active substances and can be used for production of foodstuff. A research objective was the development of sorbet with the use of honeysuckle berries in fresh and frozen state. It has been established that for product stabilization it was necessary to add an agar (1.

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The aim of the work is to scientifically justify the formulation of a probiotic food product for sports nutrition using a functional food ingredient. As a functional food ingredient, the association of probiotics (Lactobacillus and bifidobacteria) immobilized in a gel of biopolymers was studied. The main raw material used was cow's fat-free milk; as components that regulated the protein-carbohydrate composition of a multicomponent product, the whey protein isolate, natural honey and maltodextrin were chosen.

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Nutrition is a very important element in the training of athletes - both professionals and amateurs. Sports exercises accompanied by significant energy expenditure, hypoxia, large neuro-psychological stress that caused the body's increased need for energy and certain nutrients. It is almost impossible to provide athletes' needs through the regular diet, so during the training cycle they used specifically developed nutrition' systems.

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