Proportions Of Different Components Research Articles

The amplitude modulation bispectrum: A weak modulation features extracting method for bearing fault diagnosis

As a key component of the industrial equipment, the failure of rolling bearings could cause equipment to malfunction, resulting in serious losses. However, the bearing fault information is often disturbed by the operation of other parts in the industrial equipment. A key issue is the recognition of weak information in the fault diagnosis of rolling bearings. The amplitude modulation bispectrum proposed in this paper is a rolling bearing fault diagnosis method for weak modulation feature extraction. Aiming at the problem that the bearing fault information is weak and difficult to extract, the method reconfigures the amplitude of the signal in the frequency domain to adjust the proportions of different components in the signal effectively and highlight the fault characteristic information. Based on the use of advanced demodulation tool to deal with the complex modulation components in the signal, an index, named bispectrum signal-to-noise ratio, to evaluate the fault information quantitatively for two-dimensional data is also proposed. The index helps to optimize the bispectrum demodulation results and make the valid information clearer. The effectiveness of this method in rolling bearing fault diagnosis is confirmed using simulation and experimental signals, and comparison with other methods has demonstrated the superiority of this method.

Minimalist Nanovaccine with Optimized Amphiphilic Copolymers for Cancer Immunotherapy.

Cancer vaccines with the ability to elicit tumor-specific immune responses have attracted significant interest in cancer immunotherapy. A key challenge for effective cancer vaccines is the spatiotemporal codelivery of antigens and adjuvants. Herein, we synthesized a copolymer library containing nine poly(ethylene glycol) methyl ether methacrylate-co-butyl methacrylate-co-2-(azepan-1-yl)ethyl methacrylate (PEGMA-co-BMA-co-C7AMA) graft copolymers with designed proportions of different components to regulate their properties. Among these polymers, C-25, with a C7AMA:BMA ratio at 1.5:1 and PEG wt % of 25%, was screened as the most effective nanovaccine carrier with enhanced ability to induce mouse bone marrow-derived dendritic cell (BMDC) maturation. Additionally, RNA-sequencing (RNA-Seq) analysis revealed that C-25 could activate dendritic cells (DCs) through multisignaling pathways to trigger potent immune effects. Then, the screened C-25 was used to encapsulate the model peptide antigen, OVA257-280, to form nanovaccine C-25/OVA257-280. It was found that the C-25/OVA257-280 nanovaccine could effectively facilitate DC maturation and antigen cross-presentation without any other additional adjuvant and exhibited excellent prophylactic efficacy in the B16F10-OVA tumor model. Moreover, in combination with antiprogrammed cell death protein-ligand 1 (anti-PD-L1), the C-25/OVA257-280 nanovaccine could significantly delay the growth of pre-existing tumors. Therefore, this work developed a minimalist nanovaccine with a simple formulation and high efficiency in activating tumor-specific immune responses, showing great potential for further application in cancer immunotherapy.

Characterization of Morphologically Distinct Components in the Tarsal Secretion of Medauroidea extradentata (Phasmatodea) Using Cryo-Scanning Electron Microscopy.

Attachment to the substrate is an important phenomenon that determines the survival of many organisms. Most insects utilize wet adhesion to support attachment, which is characterized by fluids that are secreted into the interface between the tarsus and the substrates. Previous research has investigated the composition and function of tarsal secretions of different insect groups, showing that the secretions are likely viscous emulsions that contribute to attachment by generating capillary and viscous adhesion, leveling surface roughness and providing self-cleaning of the adhesive systems. Details of the structural organization of these secretions are, however, largely unknown. Here, we analyzed footprints originating from the arolium and euplantulae of the stick insect Medauroidea extradentata using cryo-scanning electron microscopy (cryo-SEM) and white light interferometry (WLI). The secretion was investigated with cryo-SEM, revealing four morphologically distinguishable components. The 3D WLI measurements of the droplet shapes and volumes over time revealed distinctly different evaporation rates for different types of droplets. Our results indicate that the subfunctionalization of the tarsal secretion is facilitated by morphologically distinct components, which are likely a result of different proportions of components within the emulsion. Understanding these components and their functions may aid in gaining insights for developing adaptive and multifunctional biomimetic adhesive systems.

Combustion of LPG / DME gas mixtures in an SI engine with correction of the ignition advance angle

The paper presents the results of tests on a SI engine fueled with an LPG/DME blends of various composition. A number of experimental studies and calculations using a mathematical model were carried out to examine the suitability of this fuel. These tests allowed for the analysis of the changes taking place in the combustion process and the assessment of the main operating parameters of the engine. The results of the analysis of the combustion process make it possible to observe how the heat is released and how the indicated pressure changes, depending on the share of DME in the fuel mixture. The scope of the tests performed included engine and vehicle tests on a chassis dynamometer and a series of simulation tests conducted on the basis of the obtained results. The engine was powered by an LPG/DME fuel mixture with different proportions of components. The share of DME ranged from 0% to 30% of the fuel mass. The obtained results reflect the operation of the engine in the full load range and selected rotational speeds. Measurement series were made for different settings of the ignition advance angle. Based on the obtained results, a corrected map of the ignition advance angle was developed. The obtained results confirm the usefulness of using the LPG/DME mixture to power the SI engine.

Modified Achira (Canna edulis) starch-based adhesives: effect of acid hydrolysis and urea derivatization on physicochemical properties

In recent decades, due to high market demand and multiple environmental concerns, attention has been focused on the use of starch as renewable raw material for adhesives elaboration. Particularly, the origin and film-forming properties of Achira (Canna edulis) starch make it a potential representative for the development of bioadhesives. In this study, achira starch modified by acid hydrolysis and subsequent derivatization with urea was used to prepare adhesives for plywood substrates. For this purpose, the modified starch and polyvinyl alcohol (PVA) were used to prepare several formulations with different proportions of components. Afterwards, they were characterized in terms of physicochemical and mechanical properties. The formation of starch carbamates was confirmed not only by the results of nitrogen content, but also by infrared spectroscopy through the presence of N-H and C=O groups. On the other hand, viscosity increased with PVA content due to the interaction of hydroxyl groups, while starch had the opposite effect. Shear strength showed higher values at higher concentrations of PVA and starch. From the perspective of mechanical behavior, the results showed similarities with a commercial adhesive based on polyvinyl acetate (PVAc), as well as with other bio-based adhesives from studies conducted under comparable conditions.

Effect of system composition on mixing in binary fluidised beds

The influence of bed composition – that is, the relative proportions of different components – on the mixing of fluidised beds containing mixtures of Geldart group B and D particles is of considerable importance to a variety of contemporary industrial processes, such as plastic recycling and biomass gasification. In this study, we use Positron Emission Particle Tracking (PEPT) to analyse the detailed, three-dimensional flow dynamics of such a system and, from these measurements, determine the rate of mixing as a function of bed composition. Our results show that for comparatively small fractions (ϕD≲30%) of Group D particles, the system’s mixing dynamics are only weakly affected by variations in ϕD. For higher concentrations, however, the mixing effectiveness of the system is observed to decrease sharply, and marked changes in the system’s flow patterns are observed, with a previously undocumented meta-stable state recorded for the highest concentrations of group D particles.

Three-dimensional multi-component quality evaluation of Chinese medicine based on proportion consistency of active components: a study of Salvia miltiorrhiza

To reveal the law of the proportion consistency of the active components in Chinese medicine and explore a new way to evaluate the quality of Chinese medicine, the present study investigated the content of tanshinone Ⅱ_A, cryptotanshinone, tanshinone Ⅰ, salvianolic acid B, rosmarinic acid, caffeic acid, and lithospermic acid in 895 samples of Salvia miltiorrhiza from 87 literature articles. The samples with salvianolic acid B and tanshinones(total content of tanshinone Ⅱ_A, tanshinone Ⅰ, and cryptotanshinone) meeting the requirements of Chinese Pharmacopoeia were analyzed for proportion consistency of components, and the proportion distribution of components was compared. The results showed that the proportions in and between tanshinones and salvianolic acids were stable. The content ratios of cryptotanshinone to tanshinone Ⅱ_A, rosmarinic acid to salvianolic acid B, and salvianolic acid B to tanshinone Ⅱ_A fluctuated from 0.1 to 1.7, from 0.02 to 0.14, and from 10 to 60, respectively. It indicated that the content proportions of different components were not fixed, but fluctuated in a certain range. The fluctuation range of components in the same group was small, but that in different groups was large. The content proportions of active components were stable for Chinese medicinal materials with fixed varieties or origins. The samples whose content proportions were out of the fluctuation ranges were generally unqualified medicinal materials. We proposed a "three-dimensional multi-component" quality evaluation model of Chinese medicine based on the above findings. Specifically, "three-dimensional" means to accurately evaluate the quality of Chinese medicine from varieties, proportions, and content of active components, and "multi-component" means to highlight the information of multiple components in Chinese medicine, especially the quality markers and equivalent component groups. The proportion of components in Chinese medicine can be used as an important index for the quality evaluation of Chinese medicine. The proportions of active components are stable in Chinese medicinal materials with fixed varieties or places of origin.

Mixed Solvents in Multilayer Ceramic Capacitors (MLCC) Electronic Paste and Their Effects on the Properties of Organic Vehicle.

The copper end paste used in multilayer ceramic capacitors sintered in nitrogen atmosphere leads to carbon residues of organic vehicles, which leads to a reduction in electrode conductivity and high scrap rate. With an attempt to leave no residue in the sintering, the compatibility of solvents and thickeners should be improved because it has an important influence on the hierarchical volatilization and carbon residue of organic vehicles. In this work, the volatility of different solvents was compared, and several solvents were mixed in a definite proportion to prepare an organic vehicle with polyacrylate resins. The hierarchical volatility and solubility parameters of mixed solvents were effectively adjusted by changing proportions of different components. The thermogravimetric curves of resins and organic vehicles were measured by thermogravimetric analyzer, and the effect of solubility parameter on the dissolvability of resins in the solvent and the residual of organic vehicles were studied. Results showed that the hierarchical volatilization of solvents can be obtained by mixing different solvents; the intrinsic viscosity of the organic vehicle is higher, and the thermal decomposition residue of polyacrylate resins is lower when the solubility parameters of mixed solvents and polyacrylate resins are closer. The low residual sintering of organic vehicles can be achieved by using a mixed solvent with hierarchical volatility and approximate solubility parameters as resins.

Convenient synthesis of Ni-Mn-S@rGO composite with enhanced performance for advanced energy storage applications

As a promising energy storage device, the performance of supercapacitors is greatly influenced by the electrode material. Here, we designed a simple Ni-Mn-S@rGO composite material. The rGO with a two-dimensional layered structure serves as the basis for the in-situ growth of Ni-Mn-S microspheres, which effectively reduces the aggregation of sulfides, provides a rapid electron migration channel, and effectively improves the electrochemical performance of the material. In addition, the synergy between different metal ions will also affect the properties of the materials. Therefore, the materials are optimized by controlling the proportion of different components in the raw materials. The results show that the Ni-Mn-S@rGO-2 with proper composition has a superior specific capacitance of 2042.22F g−1 (at 1A g−1) and a retention rate of 77.78% after 5000 cycles. An all-solid-state asymmetric supercapacitor was fabricated using Ni-Mn-S@rGO-2 and active carbon as electrode materials. The device achieved a high energy density of 77.95 Wh kg−1 at a power density of 750W kg−1. Furthermore, the device retains 81.97% specific capacitance after 10000 charge-discharge cycles, which indicates that the device has satisfactory cycle stability. These results prove that Ni-Mn-S@rGO composites have potential applications in the field of supercapacitors.

The Influence of Financial Structure on Business Performance of Listed Oil and Gas Companies in Vietnam

The research investigates the influences of financial structure on business performance of listed oil and gas companies in Vietnam via their 145 audited observations (financial statements) in 2016-2020. The results show that the more the short-term debt, the higher the proportion of inventory and fixed assets and the lower the business efficiency - however, the market value on book value increases. At the same time, the older and larger the scale, the higher the proportion of state capital and the better the business performance. In each sub-sector of oil and gas companies, there will be different proportions of components in the financial structure, leading to diversity in business performance. This is the basis for the authors to make some recommendations for oil and gas companies and the State to promote the development of this spearhead industry of Vietnam.

Experimental Evaluation of Shrinkage, Creep and Prestress Losses in Lightweight Aggregate Concrete with Sintered Fly Ash.

The paper presents the experimental results of shrinkage, creep, and prestress loss in concrete with lightweight aggregate obtained by sintering of fly ash. Two concrete mixtures with different proportions of components were tested. Concrete with a density of 1810 and 1820 kg/m3, and a 28-day strength of 56.9 and 58.4 MPa was obtained. Shrinkage and creep were tested on 150 × 250 × 1000 mm3 beams. Creep was tested under prestressing load for 539 days and concrete shrinkage for 900 days. The measurement results were compared with the calculations carried out according to the Eurocode 2 as well as with the results of other research. A very low creep coefficient and lower shrinkage in relation to the calculation results and the results of other research were found. It was also revealed that there is a clear correlation between shrinkage and creep, and the amount of water in the concrete. The value of the creep coefficient during the load holding period was 0.610 and 0.537, which is 56.0 and 49.3% of the value determined from the standard. The prestressing losses in the analyzed period amounted to an average of 13.0%. Based on the obtained test results, it was found that the tested lightweight aggregate concrete is well suited for prestressed concrete structures. Shrinkage was not greater than that calculated for normal weight concrete of a similar strength class, which will not result in increased loss of prestress. Low creep guarantees low deflection increments over time.

Investigation on the impact of different proportions of components in formulations on stability of a moisture sensitive drug

Physicochemical and mechanical properties of tablets are largely dictated by formulation compositions. Different excipients possess different tableting and moisture sorption behaviors. Therefore, this study was designed to elucidate the relative influence of the proportion of components in formulations on tablet properties. Acetylsalicylic acid (ASA) tablets containing different proportions of starch, microcrystalline cellulose (MCC) and calcium hydrogen phosphate dihydrate (DCP) were prepared. The excipients were evaluated for their moisture sorption properties. Mechanical strength of the tablets was determined alongside with ASA stability, by storing the tablets at 75% RH, 25 °C. The stability study showed the importance of drug loading level on its stability. For a fixed ASA proportion, formulations with more starch were able to absorb more moisture and possessed larger areas of hysteresis loop in their moisture sorption isotherms. The presence of starch contributed positively to ASA stability although increasing proportions of starch compromised the tablet mechanical properties. Contrastingly, MCC produced mechanically stronger tablets as its plastically deforming and fibrous properties contributed to a good structural network. The findings provide a deeper understanding of the dichotomous effect by the proportion of components in formulations containing a moisture sensitive drug on drug stability and mechanical strength of the resultant tablets.

Development of a polycaprolactone/poly(p-dioxanone) bioresorbable stent with mechanically self-reinforced structure for congenital heart disease treatment

Recent progress in bioresorbable stents (BRSs) has provided a promising alternative for treating coronary artery disease. However, there is still lack of BRSs with satisfied compression and degradation performance for pediatric patients with congenital heart disease, leading to suboptimal therapy effects. Here, we developed a mechanically self-reinforced composite bioresorbable stent (cBRS) for congenital heart disease application. The cBRS consisted of poly(p-dioxanone) monofilaments and polycaprolactone/poly(p-dioxanone) core-shell composite yarns. Interlacing points in cBRS structure were partially bonded, offering the cBRS with significantly higher compression force compared to typical braids and remained good compliance. The suitable degradation profile of the cBRS can possibly preserve vascular remodeling and healing process. In addition, the controllable structural organization provides a method to customize the performance of the cBRS by altering the proportion of different components in the braids. The in vivo results suggested the cBRS supported the vessel wall similar to that of metallic stent. In both abdominal aorta and iliac artery of porcine, cBRS was entirely endothelialized within 1 month and maintained target vessels with good patency in the 12-month follow-up. The in vivo degradation profile of the cBRS is consistent with static degradation results in vitro. It is also demonstrated that there is minimal impact of pulsatile pressure of blood flow and variation of radial force on the degradation rate of the cBRS. Moreover, the lumen of cBRS implanted vessels were enlarged after 6 months, and significantly larger than the vessels implanted with metallic stent in 12 months.

Spatial distribution of physiologic 12-lead QRS complex

The normal physiologic range of QRS complex duration spans between 80 and 125 ms with known differences between females and males which cannot be explained by the anatomical variations of heart sizes. To investigate the reasons for the sex differences as well as for the wide range of normal values, a technology is proposed based on the singular value decomposition and on the separation of different orthogonal components of the QRS complex. This allows classification of the proportions of different components representing the 3-dimensional representation of the electrocardiographic signal as well as classification of components that go beyond the 3-dimensional representation and that correspond to the degree of intricate convolutions of the depolarisation sequence. The technology was applied to 382,019 individual 10-s ECG samples recorded in 639 healthy subjects (311 females and 328 males) aged 33.8 ± 9.4 years. The analyses showed that QRS duration was mainly influenced by the proportions of the first two orthogonal components of the QRS complex. The first component demonstrated statistically significantly larger proportion of the total QRS power (expressed by the absolute area of the complex in all independent ECG leads) in females than in males (64.2 ± 11.6% vs 59.7 ± 11.9%, p < 0.00001—measured at resting heart rate of 60 beats per minute) while the second component demonstrated larger proportion of the QRS power in males compared to females (33.1 ± 11.9% vs 29.6 ± 11.4%, p < 0.001). The analysis also showed that the components attributable to localised depolarisation sequence abnormalities were significantly larger in males compared to females (2.85 ± 1.08% vs 2.42 ± 0.87%, p < 0.00001). In addition to the demonstration of the technology, the study concludes that the detailed convolution of the depolarisation waveform is individual, and that smoother and less intricate depolarisation propagation is the mechanism likely responsible for shorter QRS duration in females.

Research and Performance Test of New Full‐Length Anchorage Material

It is difficult to support roadway with anchor cable in view of impact tendency in impinging liability roadway; a new material of inorganic and high‐performance full‐length anchoring material for anchoring cable is developed by adding several modifiers with ultrafine cement as the main material. The purpose is to improve the mechanical properties and durability of cement‐based materials, improve the coordination of anchor cable support system, and ensure the stability of surrounding rock of mining roadway. The new full‐length anchoring material is developed by optimizing the proportion of different components of the material, and the mechanical properties of the new material were studied. The anchoring force of resin anchoring agent, ordinary Portland cement, blank ultrafine cement, and new full‐length anchoring material are tested. Based on SEM microscopic characterization, the fracture types and failure characteristics of resin anchoring agent and full‐length anchoring material are researched. The results show that the optimal content of each component of the new inorganic high‐performance full‐length anchorage material is as follows: the content of component A is 15%, the content of component B is 3%, the content of component C is 0.2%, the content of component D is 1%, and the content of component E is 1%; the tensile test shows that the full‐length anchoring material has good bonding property, high anchoring strength, strong stability, and good rock coupling. SEM microstructure and morphology analysis have showed that the new anchorage materials can fully hydrate each other, resulting in a relatively dense stone body. The new full‐length anchoring material can effectively improve the anchoring force and improve the stability of the anchor cable and has significant performance advantages and good engineering applicability, and it has the advantages of lower cost and safer to use. The new material is a very good supporting material for roadway.

Analysis and interpretation of mixture DNA using AS-PCR of mtDNA

In forensic medicine, mixed stains usually include body fluids, secretions of two or more individuals. The application of STR profiling of single cell capture or mixed samples requires that the existence of intact nucleated cells or the appropriate proportion of different components in the sample, respectively. Trace components cannot be genotyped, and the analysis of mixture from more than two individuals is even more difficult.There are SNPs located in the mtDNA hypervariable region and its flanking sequences. According to the differences of SNPs between individuals, allele-specific PCR (AS-PCR) may be used to obtain the individual DNA fragments containing mtDNA hypervariable regions in mixed stains. There are two assumptions in the application of our method. One assumption is that when the suspect is known, the AS-PCR can be designed according to the SNPs in the mtDNA hypervariable and flanking regions. The suspect cannot be excluded if the amplified sequence is consistent with the suspect’s. Otherwise, the suspect can be excluded. The other assumption is without the suspect. We can obtain the individual’s sequence of the high component and then perform the multiple AS-PCR according to specific SNP. If the low component’s fragment can be amplified, it is possible from the potential suspect. Our method is easy to conduct and can exclude the unrelated individuals or provide the suspect’s information, especially for the individual with the low component. To some degree, it can solve the analysis of the mixture of multiple individuals. However, it is invalid for the samples of the same maternal line and the personal identification cannot be achieved.Our study is supported by National Natural Science foundation of China (NO.81671872).

Модификация полимерных смесей с сополимерами для получения полимерных композиций с улучшенными деформационно-прочностными характеристиками

Утилизация многослойных полимерных материалов затруднена, из-за сложности в процессах сортировки и разделения смешанных отходов, поэтому чаще всего они попадают на свалки, полигоны или сжигаются, что приводит к экологической и экономической проблеме в стране. В настоящее время существуют способы переработки отходов упаковки с исключением стадии сортировки при помощи химико-физической модификации. Статья посвящена проведению процесса модификации полиолефиновых смесей на основе полиэтилена и полипропилена, а также проведению комплексного исследования полученного вторичного сырья, которое направлено на увеличение технологической совместимости полимерных материалов для разработки технологии рециклинга с перспективой возврата полимерных композиций в производственный цикл. В работе были поставлены следующие задачи: провести комплексное исследование полимерных композиций на основе полиолефинов, которые модифицированы сополимером этилена с пропиленом в различном соотношении компонентов; изучить влияние модификатора на физико-механические свойства полимерных смесей; изучить влияние реологических свойств полимерных композиций, модифицированных сополимером; предложить технологию повторной переработки вторичных полиолефиновых композиций в производственный цикл. В качестве объектов исследования использовали полиэтилен, полипропилен и сополимер этилена с пропиленом, как связующее звено, в разном соотношении компонентов. Образцы получали на лабораторном одношнековом экструдере при многократной переработке. Научные исследования проведены с использованием метода капиллярной вискозиметрии, пикнометрического метода для определения реологических свойств, метода одноосного растяжения для изучения физико-механических свойств полимерных композиций. Установлено, что введение модификатора (сополимер этилена с пропиленом) приводит к увеличению относительного удлинения при разрыве у полимерных композиций в соотношении 70% полиэтилена 30% полипропилена и разрушающее напряжение для композиций на основе полиэтилена и полипропилена в соотношении 50:50 и 30:70 соответственно. В результате проведенных исследований предложена технология получения многослойных упаковочных материалов с использованием отходов упаковки в среднем слое для контакта с пищевыми продуктами; предложена технология переработки полиолефиновых смесей различной химической природы без предварительной сортировки, с получением упаковки технического назначения и предметов бытового использования.

Interactive Aggregation-Induced Emission Systems Controlled by Dynamic Covalent Chemistry.

Aggregation-induced emission (AIE) molecules show all kinds of application in biological research, chemical sensing, and medical study. However, most of the reported molecules are based on the performance of the single molecular entity. In this paper, a molecular system for real-time sensing through combination of dynamic covalent chemistry and aggregation-induced emission was rationally designed and tested. The aggregated particles exhibit different fluorescence emission colors upon the addition of various kinds of chemical reagents. The LC-MS analysis reveals that the breakage, formation, and exchange of the disulfide bonds in the molecular system occur spontaneously upon different reagents (base/acid and cysteine), which leads to a change in the proportion of different components in the system accordingly. Meanwhile, the fluorescence emission of the AIE system exhibits blue/red shift accompanied by intensity changes. Moreover, the particle size of the aggregated molecules gradually increased with the change of the chemical environment, which could be the result of the nucleus growing through intermolecular hydrogen bonding among molecular components. Thus, the chemical environment change results in the interactions of molecules, which further leads to the variation of dynamic fluorescence emission and morphology. The result represents a promising future for a dynamic AIE molecular system in the bioimaging and sensing study.

Mechanical Behaviors of Methane Hydrate-Bearing Sediments Using Montmorillonite Clay

In this study, we compared the shallow marine soil of Shenhu area in the north of the South China Sea with Montmorillonite Clay and found that there were significant similarities between them, including special gravity, median diameter and proportion of different components of soil, so we utilize the Montmorillonite Clay to take the place of the shallow marine soil of the South China Sea to study its mechanical properties. A series of triaxial tests were conducted and the results indicated that (1) the sediment’s failure strength increases with the decreases of temperature. (2) The maximum deviator stress increases with the confining pressure. (3) The sediment’s strength increases with the decreases of porosity. (4) The change of the failure strength is mainly affected by the cohesion force, and the cohesion force increases with the decrease of the temperature.

V. Development of new powder wires for building-up. A powder wire based on dust of gas cleaning systems of silicomanganese

A new powder wire developed by using dust of gas cleaning systems of silicomanganese production plant and powder of gas cleaning systems of aluminum production at different proportion of components. As components the following was used: dust of gas cleaning systems of aluminum production plant, % (mas.): 21–46.23 Al2O3; 18–27 F; 8–15 Na2O; 0.4–6 K2O; 0.7–2.3 CaO; 0.5–2.48 Si2O; 2.1–3.27 Fe2O3; 12.5–30.2 Ctotal; 0.07–0.9 MnO; 0.06–0.9 MgO; 0.09–0.19 S; 0.1–0.18 P, and dust of gas cleaning systems of silicomanganese production plant, % (mas.): 2.43 Al2O3; 1.32 Na2O; 5.56 K2O; 6.4 CaO; 29.19 SiO2; 0.137 BaO; 7.54 MgO; 0.23 S; 0.04 P; 1.067 Fe; 27.69 Mn; 2.687 Zn; 3.833 Pb.The building-up was done under a flux, made of slag of silicomanganese plant of Zapadno-Sibirsky steel-works, havin the chemical composition (%, mas.): 6.91–9.62 Al2O3; 22.85–31.70 CaO; 46.46–48.16 SiO2; 0.27–0.81 FeO; 6.48–7.92 MgO; 8.01–8.43 MnO; 0.28–0.76 F; 0.26–0.36 Na2O; 0.62 K2O; 0.15–0.17 S; 0.01 P. The building-up mode selected. Samples wear tests were carried out at machine 2070 СМТ-1. Chemical composition of the built-up metal was determined at spectrometer ДФС-71. The hardness of built-up layers was measured by hardness meter МЕТ-ДУ. The estimation of nonmetallic inclusions was made as per GOST 1778– 70 by optical microscope Olympus GX-51.Quality indices studied and coefficients of manganese recovery at different proportions of components calculated. Statistical processing of the study results was made, statistical curves of influence of component compositions on properties of built-up layer constructed.