bluuebunny/crossref_metadata_2025 huggingface dataset:
An Efficient Synthesis of a-Aminophosphonates through Kabachnik-Fields Reaction Protocol by using Cobalt Chloride Doped Polyaniline as the Nano Catalyst
Authors: Nagrik Deepak M. , Wavhal Kamalakar K.
Published: October 2020

The paper addresses the need for automation in production line. A detailed evaluation of various components required for converting a manual bearing vibration testing machine to an automatic one is carried out. Function and Description of each component is studied. The components include conveyor belts, laser Doppler vibro meter, pneumatic system, mechanical probe, timing and control sensors, speed control system, data analysis and storage unit. A method of selecting each component for automatic vibration testing machine is offered. Based on the structure of automated machine the initial set of alternate variants is defined and a formal model of automatic vibration testing machine is developed. Design of conveyor belt, linear drives, pneumatic system, isolation pad, PLC and HMI system is discussed below. Analysis of supporting structure of Vibration Testing Machine is done using ANSYS 18.1 and
results are shown.
Synthesis of Polymer films with low Dielectric Constant (k)
Authors: Shrivastava Deepali , Goyal P S , Deshpande S K
Published: October 2020

The semiconductor industry and Microelectronics based devices are in urgent need of materials having low dielectric constant (κ). Efforts are being made, world over, to develop low dielectric (say κ < 2.0) materials for microelectronic applications It is thus of interest to develop materials having low dielectric constant (κ). Polyimide is widely used as packaging material in microelectronic devices packaging due to its good thermal and mechanical properties and good adhesion to metal surfaces. However, the dielectric constant of normal PI is high (κ ∼3.4) as per the requirement of advance insulator material and for microelectronics. We have synthesized polyimide- silica composite films and it is shown that such films have much lower dielectric constant as compared to the normal PI films. The above polymer films were prepared by modifying the pristine polymer at the precursor stage of synthesis. We report the results of FTIR, XRD and dielectric studies of films which have been prepared using PMDA-ODA (Poly Amic acid in DMAc) as precursor and Tetra Ethoxy Silane (TEOS)/Silicic acid as modifier It is seen that crystallinity and the dielectric of the composite films depend on SiO2 concentration.
Study of Effect of Potassium Nitrate and Ammonium Sulphate on Dielectric Properties of Soil at X and J-Band Microwave Frequencies
Authors: Syeda R N , Abdullah Basheer M , Khan A R , Shaikh Y H
Published: October 2020

Microwave has prominent role in the present era due to its application in remote sensing. Present investigation is emphasized to explore the impact of potassium nitrate and ammonium sulphate on dielectric traits of soil samples by exposing it to X and J-band microwave frequencies. For this two different soil samples were collected from Jalna and badnapur of Maharashtra. The infinite sample method was employed for the determination of dielectric constant (e’), dielectric loss (e”), AC Conductivity and Relaxation Time of the soils. The variation in values of all the parameters of these samples mixed with different concentration of potassium nitrate and ammonium sulphate were then measured at fixed frequency X-band (6 GHz) and J-band (9.86 GHz).
Study on electrical behaviour of polyaniline doped with various weight percentage of ZnO
Authors: Raulkar K B
Published: October 2020

The composites of polyaniline doped with various weight percentage such as 10%, 20%, 30%, 40%, 50%, 60% and 70% of ZnO had been prepared by in-situ polymerization method. The synthesized composites were characterized by x-ray diffraction (XRD), Scanning Electron Microscopy (SEM) and Fourier Infrared Spectroscopy (FTIR). The DC conductivity of the samples was measured as a function of temperature in the range 300C to 2100C. The DC and AC conductivities showed strong dependent of ZnO wt % doping in PANI and were found best for 40 wt % of ZnO. DC conductivity was found to be 7.25 x 10-5 S/cm at 2100C temperature and that of AC conductivity was 3.68 x 10-2 S/cm at room temperature (270C).
Measurement of Soil Capacitance Using Pulse Width Technique
Authors: Disale A S , Chavan D. P. , Undre P B , Alameen A S , Khirade P W
Published: October 2020

Soil water content is an important parameter in many engineering, agricultural and environmental applications. Capacitance measurement methods are used to measure the soil moisture or water content. Many capacitance soil moisture sensors employ a probe consisting of two electrodes. The capacitance between the probes varies as a function of water content in the soil. The capacitance measurement setup has been developed indigenously to measure capacitance of solid samples at low frequencies using integrated circuit of Monostable Multivibrator. The change in pulse width measured by using Tektronix TDS 2024 four channel digital storage oscilloscope. In this paper capacitance of soil samples from different locations of Pune district of Maharashtra State was measured at room temperature. The details of its interface to measure capacitance of soil samples and evaluated results are explained in this paper.
Green Manufacturing Index Applicability, An Approach to Acquire Industrial Gain.
Authors: Ganvir K. D. , Chopade J. V. , Pachkawade N. D.
Published: October 2020

The paper focuses on the requirement of fitness of lean and green concept utilization in an industry. Manufacturing plays the most prominent role in the development of economy of any country. The base of green manufacturing is its preference for sustainability and economical benefits. The main agenda of Green Manufacturing deals with conserving natural wealth for future generation and recycling of material by improvements in production process, it traverse the estimation and involvement of its index.Green constitutes bionomical durability and includes various attributes such as recycling from scrap and waste, pollution of land water and air, usage of energy and prescription. Green Growth is the effective and proper utilization of resources available by nature, reduction of pollution and impact of environment and strong towards bad effects, focusing on global durability and endangered into profitable from efficient, clean and pliant growth. Green assembling is a framework that incorporates item and procedure configuration issues with issues of assembling, arranging and control in such a way as to recognize, measure, test and deal with the progression of natural waste with the objective of diminishing and eventually limiting ecological effect while likewise attempting to expand asset effectiveness. The primary target of this exploration work is meant to examine viability of Green assembling. The strategy has been planned by sub ordering the machining rehearses dependent on their impediments, financial and ecological effects on keep up an economical assembling standard for businesses. The proposed strategy would be pertinent to any assembling procedure in industry. The intension is to minimise the gap of involvement of lean and green approach to contribute crucially as regarding expandable manufacturing.
Generation of Electric Energy Converted Into Fuel Cell for Operating Grass Cutter Mechanism.
Authors: Ganvir K. D. , Pachkawade N. D. , Chopade J. V.
Published: October 2020

The research intends the need for an alternative source of energy based on fuel cell. The purpose of the work is to generate electricity from hydrogen fuel cell using H2 gas. The stored energy in form of fuel cell can be further used to operate the automatic grass cutter. The hydrogen, oxygen fuel cell formed from electric energy storage can be obtained by combining aluminium and water. H2 has the highest energy density from all common fuels by weight so that’s why it can be one of the promising substitute energy sources. The hydrogen must be incorporated in a small, less heavy system so that unnecessary weight of the device should be avoided. For cutting the grass, manually handled devices are commonly used, efforts required are more. Also, the old grass cutters are getting obsolete and requires replacement by automatic one, where system will work for guidance and obstacle detection using battery as power source. In these days’ problems like pollution, power cut problem etc. appearing. To deal with such trouble and the help of technology device can be made, which can do its function without stimulating any harmful exhaust, the project will be operated by generating an energy, which can perform operation by using the renewable source of energy like alternate hydrogen fuel. Hence an attempt has been made by combining aluminium and water into some usable form which can absolutely be an alternative for various power generating fuels.
Temperature dependent AC electrical properties of solid polymer PVA based proton electrolyte
Authors: Bodkhe P. S. , Turkhade A.V. , Baig N.S. , Wadatkar A. S.
Published: October 2020

In this study, theSolid polymer electrolyte (SPE)containing polyvinyl alcohol (PVA) and lithium perchloride(LiClO4) have been prepared by using solution cast technique.The objective of this study is to investigate the influence of LiClO4 inorganic salt on the AC conductivity of the electrolyte. For that purpose, the PVA sample with LiClO4 inorganic salt was prepared with different concentration (0, 5, 10, 15 and 20)wt.% of LiClO4 salt and different thickness. XRD analysis of the sample reveals that PVA shows broad peak at 26=19.84° and degree of crystallinity decrease by adding the concentration of lithium salt.The electrical conductivity of the material is measured using LCR meter.The experimental results shows that the AC electrical conductivity increases with increasing the temperature and concentration of Li salt.The dielectric constant values of SPE decreases with increase in frequency and increases with increase in temperature. Maximum conductivity of PVA with 20% LiClO4 at 353K and frequency 500kHz is found to be 3.51*10-2 s/cm.
Breath isoprene excretion during rest and low-intensity cycling exercise is associated with skeletal muscle mass in healthy human subjects
Authors: Hori Amane , Suijo Kenichi , Kondo Takaharu , Hotta Norio
Published: October 2020

The physiological roles of isoprene, which is one of the many endogenous volatile organic compounds contained in exhaled breath, are not well understood. In recent years, exhaled isoprene has been associated with the skeletal muscle. Some studies have suggested that the skeletal muscle produces and/or stores some of the isoprene. However, the evidence supporting this association remains sparse and inconclusive. Furthermore, aging may affect breath isoprene response because of changes in the skeletal muscle quantity and quality. Therefore, we investigated the association between the breath isoprene excretion (

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) and skeletal muscle mass in young (n = 7) and old (n = 7) adults. The participants performed an 18 min cycling exercise after a 3 min rest. The workload corresponded to an intensity of 30% of the heart rate reserve, as calculated by the Karvonen formula. The exhaled breath of each participant was collected during the exercise test. We calculated

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from the product minute ventilation and isoprene concentration and, then, investigated the relationships between

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and muscle mass, which was measured by multi-frequency bioelectrical impedance analysis. Importantly, muscle mass persisted as a significant determinant that explained the variance in

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at rest even after adjusting for age. Furthermore, the muscle mass was a significant determinative factor for

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response during exercise, regardless of age. These data indicated that skeletal muscle mass could be one of the determinative factors for

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during rest and response to exercise. Thus, we suggest that the skeletal muscle may play an important role in generating and/or storing some of the endogenous isoprene. This new knowledge will help to better understand the physiological functions of isoprene in humans (Approval No. 20190079).
Bacillus subtilis C2 producing lipase isolated from bulk shrimp paste in Samarinda East Kalimantan
Authors: Soeka Y S , Sulistiani
Published: October 2020

Lipase is an enzyme that catalyzes the hydrolysis reaction of lipid (triacylglycerol) to glycerol and free fatty acids which has been used in various industrial applications such as food, cosmetics, detergents and pharmaceuticals. Bacillus subtilis C2 isolated from bulk shrimp paste (terasi) in Samarinda East Kalimantan, it showed producing lipase, and able to degrade fat. Lipase activity was determined titrimetrically. The ability of the strain to degrade fatty substrates was investigated in the medium 0.1% of olive oil, virgin coconut oil (VCO), cooking oil, tween 80, and Schleicheraoleosa oil. The activities of lipase treated based on the period of incubation, temperature, and pH. The results showed that the optimum activity of lipase was 1.09 U/mL after five days incubation, 1.43 μmol/mL at 30°C and 1.96 U/mL at pH 9.0. The enzyme gave the highest lipase activity 1.76 μmol/mL used olive oil as a substrate. The physiology analysis showed the bacterium B. subtilis C2-lipolytic was thermotolerant, halotolerant and strictly aerobic.
Effect of dyeing repetition and color reinforcement materials on color formation of cloth by mixed fungi dyes
Authors: Suciatmih
Published: October 2020

Colors variation and aging on cloth can be obtained through dyeing repetition and the application of color reinforcement materials. In the present study, cloth was dyed with dyes from the mixed fungi of Aspergillus and Paecilomyces using three different dyeing repetitions (3, 6, and 9 times), three different mordants (CaCO3, FeSO4.7H2O, and KAI (SO4)2.12H2O), and three different other color reinforcement materials (salt, soda ash, and vinegar). The mixed fungi were grown on mineral salt glucose medium in stationary cultures in dark conditions for 4 weeks. By using the RHS color chart, the range of colors developed on dyed materials was measured. The result showed that different dyeing repetitions and the combination of those with color reinforcement materials had a great effect on the color formation of cloth by the mixed fungi dyes. The optimum condition of cloth dyeing by the fungal dyes depends on color reinforcement materials used. The combination of dyeing repetition and color reinforcement materials on the color formation of cloth by the fungal dyes generated various colors, adding a color variation on textile dyeing.
Effect of Artocarpus heterophyllus Leaf Ethanol Extract on Skin Smoothness
Authors: Widyawati T , Syarifah S , Daulay M , Mustanti L F
Published: October 2020

Artocarpus heterophyllus (Ah) is a plant that grows in many parts of Indonesia. Its leaves are widely used for traditional uses, one of which is for facial skin care. The present study was conducted to evaluate the effect of its extract on facial skin smoothness. Ethanol extract of Ah (EEA) was prepared as clay mask formulation (FI: 1, F2: 3 and F3:5%) and then was applied on volunteer face. Skin smoothness improvement was measured using a skin analyzer. Standardization of simplicia and phytochemical screening of EEA were done before the test. Data were analyzed using Kruskall Wallis and Mann Whitney. Standardization yielded as follows: total water-: 5.33%, total water-soluble 15.67%, total ethanol-soluble 13.61% and total ash 10.29%. Smoothness value showed as normal skin with improvement to smooth level on EEA-treated group: FI: 9.4%; F2: 5.6%; F3:10.0%. The highest improvement percentage of skin was found in F3. Statistically, there was significantly different (p=0.046) between F0-F3. The study concludes that F3 is able to improve facial skin smoothness.
Efficacy of Several Entomopathogenic Microorganism as Microbial Insecticide against Insect Pest on Chili (Capsicum annum L.)
Authors: Zulfitri A , Krishanti NPRA , Lestari AS , Meisyara D , Zulfiana D
Published: October 2020

The purpose of this study was to apply microbial suspension of which formulated as bio-insecticide to observe its effectiveness in controlling insect pest on chili plants,Capsicum annumL. The efficacy of bio-insecticide was evaluated based on potential entomopathogenic microorganisms used in the microbial suspension. The bio-insecticide consisted of entomopathogenic fungal and bacterial suspensions. The experiment was carried out in chili cultivation area in Situ Gede, Bogor. The application used spray method with multiple various doses. The observation showed that the plant treated with spore suspensions of entomopathogenic fungiMetarhiziumsp. T4B23, B2-2, and cell suspensions of entomopathogenic bacteria Bt + SP4, were able to resist against insect pests, such as whitefly, grasshopper, and armyworm. In addition, the treated plant had more vigorous growth and yield than the control treatment.
The Effectivity of One-pot Concentrated Maleic Anhydride Hydrolysis for Betung Bamboo Pulp (Dendrocalamus asper sp)
Authors: Kusumaningrum Wida B. , Amanda Putri , Suryanegara Lisman , Masruchin N.
Published: October 2020

Modification and synthesis of cellulose have attracted growing interest in the last decade due to applicable for many fields on advanced materials. Organic acid hydrolysis could be as an effective process for functionalization and size reduction of cellulose in one-pot reaction. The objective of this research is to study the effectivity of maleic acid anhydrous for functionalization and isolation of nanocellulose. Unbleached and Bleached Pulp of Betung Bamboo were used as cellulose resources. Concentrated maleic acid anhydride in 50% up to 60% (w/w) for 45 up to 90 minutes at 100 °C of reaction temperature were conducted to isolate cellulose nanocrsytals from betung bamboo pulp. Fibrillation treatment on fiber solid residue using ultrasonication result micrometers scale less than 1 μm for unbleached (UBB) and bleached (BB) fibrillated cellulose. Functionalization of carboxyl groups is more effective on UBB than BB with surface charge up to -48.5 mV and specific groups of carboxyl are detected in 1716 cm-1and 1273 cm-1. Thermal stability also has similar tendency by Tonsetin 313.69 °C and Tmaxin 336.02 °C for UBB.
A Deep Learning and Depth Image based Obstacle Detection and Distance Measurement Method for Substation Patrol Robot
Authors: Hongsheng Xu , Tianyu Chen , Qipei Zhang , Jixiang Lu , Zhihong Yang
Published: October 2020

Recently, substation patrol robot is gradually used to replace the manual inspection in order to improve the inspection efficiency as well as security and automation level of substation maintenance. The research of obstacle avoidance is a hot spot in substation intelligent patrol robot area. The emerging new generation of artificial intelligence (AI) technology provides a new way to solve the obstacle detection and distance measurement problem. To realize accurate, effective and real-time response to the environmental changes, a novel obstacle avoidance method based on deep learning and depth image is proposed. The core of this method is pixel-level instance segmentation between obstacles and roads, along with a pixel-level matching of obstacles’ segmentation mask and depth data. The effectiveness of the proposed method is validated by actual tests in real substation environment.
A fault analysis for Micro-grid based on Wavelet
Authors: Wang Yang , Lu Yongcan , Wang Dongyang , Chen Ming , Xu Zikun
Published: October 2020

Micro grid is an efficient and flexible way to solve the problem of grid-connected distributed generation. Since the distributed generation accessed and the number of branch increases, system fault condition is complicated. Micro grid fault protection becomes a hot issue now. In this paper, a method based on wavelet is proposed for micro grid fault current analysis. A typical 10kV micro grid model is established in PSCAD, which is consisted of wind power, PV, EV and so on. And, short circuit fault is simulated. Then, the fault current data is further dealt by Harr wavelet. The results would provide a good guide for the setting of fault protection scheme.
Effect of Thickness and Patterns of Graphene Film on High-frequency Power Absorption
Authors: Hsu Chung Yen , Chen L S
Published: October 2020

In this paper we discuss the effect of thickness and patterns of graphene film on high-frequency noise absorption performance, experimentally determine the graphene film of electromagnetic reflection, absorption loss and transmission. A simple thickness design microstrip line based structure has been used for the microwave characterization in high-frequency. The graphene material mixing with epoxy (graphene : 70wt%, epoxy:30wt%, conductivity approximately 116 Siemens/m) was spin-coated or screen-printed on FR4 substrate to obtain the desired different film thickness. Complex S-parameter measures reveal different on thickness(0.05mm/0.5mm) in comparison to microstrip line. In this paper we found the graphene dual-film fabricated into the stair pattern with a thickness ratio of 1:10 has better performance than single layer. Both the S parameters and absorption power performance (Ploss/Pin) were measured in the high frequency range of 0.05 GHz–10 GHz. In this study the experiment results show that dual-film power loss reaches 95% at 2GHz were measured using an Agilent Technologies vector network analyzer PNA-X N5242A OPT200(VNA).
The servicescape of air transport terminal affecting passenger satisfaction
Authors: Kankaew Kannapat
Published: October 2020

The air transport infrastructure in this study is the airport. The aim of this research is to assess the airport environment specific on services cape or the architecture design, and function which affecting the passenger’s satisfaction. This study conducted at Don Mueang International Airport (DMK), Thailand. Since DMK has been renovated and expanded to serve the demand of passenger. The questionnaires were distributed to 400 Thais passenger using DMK airport. The structural equation modelling (SEM) was utilized to confirm the factors affecting the user’s comfort and satisfaction. The result found that the factor most affecting passenger’s feeling comfortable which leads to satisfaction inside the terminal were the exhibition of arts and culture inside terminal, the cleanliness of terminal, the natural light shine into the terminal and last the cleanliness of toilets. Hence, the airport management team should considering present the arts and culture of Thailand in the terminal. This would help passenger relaxing by appreciating the arts and culture during their journey in and out Thailand.
The vibroacoustic analogies method
Authors: Mogiljuk Zh G , Poduval’tsev V V
Published: October 2020

The article deals with the main problem of computational dynamic modeling of building structures, which is associated with the computational modeling of dynamic parameters of structural elements. The methods and schemes of construction of dual analogies between such dynamic properties of designs elements as inertia, rigidity and pliability to dynamic loadings are presented. The Vibroacoustic analogies for Ohm’s law, Kirchhoff’s laws, Hooke and Newton and the mathematical analogies between acoustic and electrical impedances for the elements of building structures are considered. The patterns of Vibroacoustic analogies for the resonance properties simulation of structural elements are examined. It is shown that the elements of the design have a multi-mode acoustic impedance. It is shown that correct modal analysis of structural elements dynamic reaction is a necessary condition for the correct simulation dynamic reaction schemes of buildings and structures to the effects of dynamic loads as complex mechanical systems. The article shows the convenience of using vibroacoustic analogies both in calculations of dynamic load distribution on building structures elements and in dynamic monitoring data interpretation of buildings and structures technical condition. The dynamic models of design are analyzed taking into account their vibroacoustic interaction in the acoustically coupled system of structural elements. The article presents equivalent schemes and systems of equations calculation modeling of the distribution of dynamic stress and strain in the building structure space. As an example, the computational modeling principles of dynamically indeterminate mechanical systems of buildings and structures is considered.
Experimental study of the influence of sand base reinforcement on the development of deformations under static and cyclic loading
Authors: Antonov V M , Al-Naqdi I A
Published: October 2020

The results of plate tests conducted in the laboratory of “soil Mechanics” of TSTU are presented. The cases of application of static and cyclic loads on reinforced and unreinforced sand base are considered. In these tests, the density of the sand base, the depth of the reinforcement element, and the initial load stage from which cycling was performed were changed. Three series of experiments were performed in a tank with rigid side walls. As the base, a fine, low-moisture, homogeneous sand was used. In the first series of experiments a stepwise increasing load was transferred to the plate at different densities. In the second series, a cyclic load was transferred to the base, with a value equal to half of the previously found ultimate load. In the third series of experiments, a reinforcing element was placed in the base at various distances from the sole of the foundation model and the load was applied both stepwise increasing static and cyclic. It is shown that the settlement during introduction of cyclic loading is from 20 to 50% of the total value. Reinforcement of the base allows you to reduce the settlement of cycling load. At the same time, there is a significant increase in the bearing capacity of the foundation and a decrease in the values of total deformations.
Calculation of thermal conductivity coefficient of thermal insulation mixtures
Authors: Galkin A F , Kurta I V , Pankov V Yu
Published: October 2020

The majority of prospective deposits of oil and natural gas in the Russian Federation are located in the zones of permanently frozen rocks - the permafrost. This region is characterized not only by harsh climatic conditions, causing difficulty in development of the deposits, but also by negative cryogenic processes impacting the reliability of construction and use of various engineering structures. It is necessary to know the regularities of and to be able to forecast the thermal regime of the soils and rocks in order to forecast the degree of influence of cryogenic processes on the engineering structures. In particular, the depth of thawing and freezing of soils in the locations of underground and surface structures, such as pipelines, is of importance. The depth of thawing of soil is an important indicator for the choice of the method of construction on the frozen surfaces. Control of the thawing/freezing depth can be ensured with the use of thermal insulation as well as replacement of the soil itself with an artificial soil with preselected properties. Transportation of oil and natural gas is realized using pipelines laid through frozen rocks. In order to decrease cryogenic impact on the pipes, special thermal insulation beddings replacing a section of soil are used. To determine the thermal insulation properties of beddings made out of polystyrene, variant calculations of thermal conductivity coefficient have been done according to the Odelevski and Schwerdtfeger formulas. Calculations were done for beddings in thawed and frozen state with different polystyrene content concentration. The conclusion is that both formulas can be used for theoretical determination of thermal conductivity coefficient. Absolute and relative errors do not exceed those permissible in engineering calculations for a wide range of conditions.
Working capacity of direct models of reinforced concrete structures with longitudinal corrosion cracks when exposed to centered and off-center compressive loads
Authors: Shamshina Ksenia
Published: October 2020

Based on the results of experimental studies of direct models of transport reinforced concrete structures with corrosion longitudinal cracks, the obtained functional dependences of changing their structural behaviors and deformations when exposed of central and off-center compressive load are presented.
Reduction of seismic loads for transport construction facilities using dry friction elements
Authors: Lapin V A , Yerzhanov S Y
Published: October 2020

In the city of Almaty, a seismically insulated building using dry friction elements was built at a special training ground. An engineering-seismometric service station is installed on the building. The dynamics of the building under the influence of accelerograms of real earthquakes in the city of Almaty is being studied. Accelerograms of the Baysorun earthquake recorded on solid soils and the Zhalanash-Tyup earthquake recorded on clay soils are used. Spectral coefficients are obtained for various values of the dry friction coefficient. It is shown that on solid soils the use of seismic isolation with dry friction elements based on fluoroplastic gaskets reduces seismic loads by half. On clay soils, the use of such a system of seismic isolation seems inappropriate. The results of the work can be used for seismic isolation of transport infrastructure facilities.
Foundations design and construction for high-rise buildings in seismic areas
Authors: Marinichev M B , Tkachev I G
Published: October 2020

Due to the unusual architectural forms of modern high-rise buildings, as well as an increase in design loads on their bases, geotechnics is developing. Experts in the field of bases and foundations solve increasingly complicated problems, as a result of which methods for calculating, designing and building hidden from the eyes, but very responsible and costly elements of the buildings that are the foundations, are improved. Hazardous natural processes, high seismicity, the risk of developing landslide processes complicate the task and make the problem of foundation engineering in such conditions even more urgent. The methods being developed for the construction of effective foundations have made it possible to erecting a number of high-rise buildings in seismic areas in recent years.
Evaluation of possibility of using crane-beams with increased load capacity in the existing industrial building
Authors: Egereva Elvira , Barmenkov Alexei , Barmenkova Alina , Tsoroev Adam
Published: October 2020

In the face of rapid changes in technological progress and market demands, industrial facilities require technical re-equipment to meet their objectives more and more frequently. In the article, work was carried out to investigate the possibility of equipping the existing production building, which is a two-span steel frame made of solid-wall welded I-beams of constant section, crane-beams with lifting capacity of 10 tons instead of the existing 5 tons, with possible options of reinforcement of structures in case of lack of their bearing capacity.
Assessment of the impact of the construction of semi-buried structures on the surrounding buildings and the road system
Authors: Komolov Vasilii , Belikov Artem , Kankhva Vadim , Mezina Natalia
Published: October 2020

The purpose of the study is to perform a geomechanical forecast and assess the impact of the construction of semi-buried structures on the surrounding buildings and adjacent roads. The article presents the result of the forecast of subsidence of the earth’s surface during the construction of the Foundation pit during the construction of a new facility (public service Center) and the adjacent road infrastructure, built in a dense urban development. The modeling was carried out in a three-dimensional for-emulation taking into account the nonlinear work of the soil and the phased construction of the foundation ditch. Selected parameters of bearing and enclosing structures of the foundation pit. The assessment of the impact of construction on the surrounding buildings.
Insolation factor in the design of energy-efficient buildings
Authors: Zelenski I R , Svinarev V S , Shcheglov D P , Radchenko I O , Cherneev A M
Published: October 2020

This article discusses the importance of taking into account the insolation factor in the design of energy-efficient residential buildings. The existing and fixed in the regulatory literature method of calculating insolation is analyzed, its strengths and weaknesses are revealed. As a way to further develop energy-efficient design, a variant of the automated calculation of insolation on the basis of the Autodesk Revit software package and the Dynamo visual programming platform was considered. The creation of an algorithm is demonstrated step by step, the advantages of using this method are clearly shown. Conclusions are drawn about the applicability of the obtained model in the design of buildings and structures.
Logistics centres in the region: the Russian Far East
Authors: Bardal Anna , Sigitova Marina
Published: October 2020

The area of the Russian Far East is 6.9 million square kilometers. This is the largest region in the country. All types of transport are operating in the Far East. Some sections of the state border between Russia and Asian countries pass through the region. In particular, the length of the border with China exceeds 4000 km. The transport complex of the region is involved in servicing transportation in the following directions: across the Far East, between the east and west of Russia, as well as transit, export, and import traffic. The creation of a system of logistics centers in the Far East will make it possible to more effectively organize the entire process of transporting various goods. This article contains proposals on the organization of a system of logistics centers in the Far East. The following indicators (official statistics) for 2013-2018 were used for calculations: volume of freight traffic by mode of transport, the density of the transport network, volume of production, population, gross regional product. The estimates using econometric methods made it possible to single out twelve locations for organizing the logistics centers in the Far East. The logistic system will include logistics centers of three levels: federal, regional and territorial. The levels are divided depending on the scale and significance of the transport and logistics work.
Managing the performance of transport organizations
Authors: Chernov Vladimir
Published: October 2020

The article considers the types of costs and their efficiency indicators, most related to the distance and capacity of cargo transportation. The calculation of the efficiency of transportation use depending on the change in the size of the cargo, as well as the calculation of planned revenue from sales depending on the distance of transportation are proposed. Next, the costs that are most dependent on distance and most dynamically affect the cost of transportation are highlighted. The method of factor analysis of material consumption with consideration of fuel consumption as an energy source for road transport is considered. This method will allow the transport organization to calculate the impact of factors, identify and use reserves to reduce the material intensity of transport and improve their efficiency. Based on the results of the factor analysis, measures are proposed to use the reserves identified in the factor analysis.
Logistics systems in modern conditions of the network infrastructure of the country’s transport complex
Authors: Astafieva N V , Ivanova N A , Dorozhkina E G , Agafonov I A
Published: October 2020

The article is aimed at studying the essence of the functioning of logistics systems, as well as determining how the use of innovations affects the economic development of enterprises and their logistics systems. The authors use innovative and system-integrated approaches to the development of functioning of logistics systems. The main results of the study are: development of an augmented classification of innovations in the logistics system, which contributes to the determination of objective and adequate models of economic situation and directions of their development, determination of vectors of innovative development of logistics systems in a modern business model, proposal of priority directions for improving functioning of logistics systems. Article materials may be useful in formulating a strategy for innovative development of logistics systems, which will contribute to their harmonization and adaptation to modern dynamic changes in the external economic environment and increase the investment attractiveness of enterprises.
Optimization of freight traffic in cities using the forecast transport model of freight traffic
Authors: Balaev E Y , Konovalova T V , Litvinov A E , Nadiryan S L , Senin I S
Published: October 2020

A sharp increase in traffic intensity has a negative impact on the quality characteristics of the traffic flow. Existing road capacity cannot cope with an ever-increasing number of vehicles, resulting in traffic jams
The rational connection coefficient calculation with different train structures
Authors: Makhkamov Nurmukhammad Ya , Ibragimova Gulshan R , Ismatullaev Azizbek F
Published: October 2020

Nowadays, the development of the country’s economy causes an increase in the volume of transportation. To develop them, the railway must continuously master transportation capacity through gradual development. Essential limitations of investment expenditures for the development of the railway provided that the volumes of transportation are fully fulfilled have put the railway in search of modern solutions. The increase in carrying capacity and capacity based on the complex strengthening of railway sections and technical means will ensure balanced development of the growth in traffic volume. Railway, block train, single train, cash throughput, required bandwidth.
Machine learning in calculating speeds in a railway sorting yard
Authors: Shabelnikov A N , Olgeizer I A , Sukhanov A V
Published: October 2020

The main step in the process of disbanding railway rolling stock at the marshalling yard is the regulation of the speed of cars that slide freely from the hump, which in most cases is carried out thanks to the brake positions installed on the hump yard in several groups. The paper considers the solution of the problem of determining the optimal exit speed of a group of cars (trailers) target braking positions on the tracks of the sorting yard, since the efficiency of the sorting process in terms of optimal accumulation on the cars on the tracks of the sorting yard and its safety depends on the correctness of the calculation of this speed in terms of compliance with the permissible speed of collision with the cars on the tracks. In the proposed study, an analogy is drawn between the calculation of the optimal exit speed from the brake position and the compilation of nonlinear multiple regression. The classic and modern machine learning algorithms to build regression models were analyzed. The most suitable algorithm was identified within the study. In conclusion, the results of the introduction of machine learning tools at a real automation facility for sorting processes are presented.
Smart charging of mobile electric vehicles
Authors: Kochetkov A V , Talalay V V , Kokodeeva N E
Published: October 2020

The paper proposes to create a digital economy for the development of electric charging networks of mass-use road transport in a business environment, in fact, these are mechanisms of public-private partnership. To go along the path of purchasing electric charging stations of Korean, Japanese, and German manufacturers and placing them for their own money on communications of Federal or territorial highways or in organizations and enterprises of various forms of ownership is a poorly managed and not rational process. It is proposed to move away from the schemes of location of specific electric charging stations and switch to the schemes of non-powered sockets. The technical solution refers to the technical means of electric charging (recharging) of mobile electric vehicles. The goal is to reduce the cost of creating a network electric charging infrastructure for electric vehicles. The technical result is the ability to ensure the charging mode of the electric vehicle directly from the existing distributed power supply system in space, by using the phase state modes of the electric connector cable that is powered or not powered by electric current. Based on the materials of the paper, patents of Russia and Kazakhstan were obtained.
Neural network methods in real-time recognition of road infrastructure objects
Authors: Gorodnichev M , Moseva M , Yashina M , Dzhabrailov Kh , Gematudinov R
Published: October 2020

The purpose of the work is to study the typification methods of moving objects based on a neural network. It turned out that the use of image classifications is so widespread today that it is difficult to imagine a sphere in which any algorithms are not implemented. The task of the work is developing system for detecting road signs on the video.
Application of artificial neural networks in tasks to support safe maneuvering of the vessels in confined waters
Authors: Bidenko Sergey , Borodin Evgeniy , Yashin Aleksandr , Gorychev Ivan , Degtyrev Andrey
Published: October 2020

Sailing in restricted areas (coastal zone, approaches to ports, narrows, and shallow waters) is the most difficult from the navigational point of view. There, the navigational situation changes dynamically due to the complexity of the bottom topography, shoals, the variability of hydrometeorological conditions (wind, currents, visibility, precipitation), the complex configuration of the fairway, the possible appearance of small vessels (high-speed boats and scooters, yachts, fishing boats) steering courses different from recommended ones, etc. An algorithm based on the artificial neural networks is presented for making recommendations on collision avoidance with dangerous objects and safe maneuvering. Limitations in the use of the algorithm are revealed and options for its practical application and further improvement are proposed.
Assessment of reliability of natural limestone cladding material
Authors: Semenov V S , Stepina I V , Kotlyarova I A , Ilushkin D A
Published: October 2020

The goal of research was identifying possible application of natural limestone samples as a cladding material for facades by means of evaluation of physical and chemical properties and inclusive of external aggressive factors. As the object of research, there were used the samples of naturally occurring limestone, of Afanasyevskiy deposit, Moscow region, designated for face slabs manufacturing of ventilated facades. In compliance with the All-Union Standard (GOST) 30629-2011, the samples have been exposed to the following testing, namely determination of mean density and true specific gravity, kg/m3, pore-saturation coefficient with water; ultimate compressive strength, MPa, water fastness (lowering of compressive strength in the water-saturated state, %); ultimate bending strength, MPa; freeze-thaw resistance, cycles, acid fastness. Chemical (elemental) analysis was carried out by the method of scanning electron microscope investigation. The tests were implemented on the electronic microscope FEI Quanta 200. The microscope is equipped by X-ray spectrometer that is designated for elemental analysis (EDAX). Both masonry units have satisfactory freeze-thaw resistance. As far as acid fastness is concerned, only marmorized limestone has demonstrated satisfactory performance. Thus, only the second group of samples presented by marmorized limestone could be recommended as a reliable material for façade cladding.
Tests features of composite materials under complex mechanical loads
Authors: Staroverov Oleg , Tretyakov Mikhail , Wildemann Valerii
Published: October 2020

The article presents the results of the analysis of existing standardized and scientifically based methods for studying composite materials under quasistatic, low-velocity impacts and cyclic loadings in conditions of normal, high and low temperatures. Based on a review of existing test methods, research methods have been developed and tested to study the changes in the strength and deformation properties of GFRP composite materials under complex mechanical loads. A new type of interpretation of experimental data in the form of diagrams of fatigue and low-velocity impact sensitivity is proposed. Characteristic sections and points are introduced on the diagrams, which make it possible to further use the data from the diagram for the design of products and structures made of composite materials operated under the conditions of unforeseen external mechanical influences. For all developed methods, the results of experimental studies conducted by the authors of the work are presented. As an example, an experimental study of the influence of additional torsional vibrations on the processes of deformation and fracture of unidirectional fiberglass rod samples under quasistatic tension is considered.
Mathematical modeling of milling machines for processing turbine blades
Authors: Malneva Yu A , Kuts V V , Lykova L N
Published: October 2020

A special place in the theory of shaping is occupied by the method of compiling mathematical models of technological processes for obtaining surfaces of parts using cutting. The mathematical model includes a description of the shape of the cutting tool and the law of its movement relative to the workpiece. In this case, several reference systems are used, and the entire calculation is carried out taking into account the complex movement of bodies. The matrix expression of the laws of motion of bodies can be the basis for creating a model of the forming process. In many cases, the envelope surface can serve as a model of the surface treated with a cutting tool. From these positions, the envelope theory is an integral part of the theory of shaping. The mathematical description of the envelope depends on the type of task for the surface family. The mathematical model of the technological process of forming includes a description of the shape of the producing surface and the law of its movement relative to the workpiece, as well as obtaining the equation of the processed surface as the envelope of the family of producing surfaces.
Testing of load-carrying elements of elevating equipment while reconstruction transport facilities
Authors: Topchiy Dmitry , Yurgaytis Alexey , Chernigov Vitaly , Bolgov Vyacheslav , Gorochov Alexandr
Published: October 2020

The authors of this paper briefly overview the history of the world’s elevator industry and provide the main existing elevator classifications by technical and other features. In order to avoid any possible discrepancies the fundamental differences between Elevator” (Elevating equipment) and “Hoist” are shown. Regulatory requirements for mandatory design of lifting mechanisms at various facilities are considered. The paper also describes tests of elevator equipment elements (in particular, mounting loops in elevator shafts) that need to be conducted at the stage of commissioning a facility to ensure further safe operation of an elevator, as well as a safe replacement of elevating equipment in the process of repair and preventive maintenance. The list of executive documentation required for commissioning of lifting equipment is presented. Schemes of tested elevator’s loop with a detailed description of some necessary elements are given. The main stages of tested elevator’s loop with the use of photos are considered. Due to the lack of regulatory documentation it is necessary to conduct full-scale tests that are based on the strength of materials calculations and reliability of structural elements. Analytical representation example of full-scale tests of elevator’s explosive loops installation is also exhibited. The study examined the objects of transport infrastructure.