bluuebunny/crossref_metadata_2025 huggingface dataset:
Phototrophic microorganisms biomass production with joint utilization of city surface water
Authors: Gorin K , Pojidaev V , Borgolov A , Sergeeva Y
Published: November 2019

Today surface water especially rain and thaw water became one of the environmental challenges for the cities. Those waters can be contaminated by different impurities including organics, oil products, heavy metals and etc. Utilization and reusing of those types surface water is the point of interest of many city agglomerations. In this paper preliminary results of Euglena gracilis CCAP 1224/5Z cultivation at highly organic contaminated surface water are presented. Cultivation was provided at illumination from 500 – 1200 lux depending on natural illumination in Moscow region. It was shown that during experiments that total organic carbon (TOC) content decreased from 41 mg/l to 15 mg/l in five days cultivation period. Final biomass concentration in case of cultivation on waste water exceeded concentration in the control flasks. Also the lipids content has been determined. In the biomass from flasks with surface water lipids content was from 24% to 32% to dry weight, depending on illumination and ambient temperature. Control biomass contains approximately from 28% to 30% in all experiments. Experiments with low TOC close to 10 mg/l showing close results – decreasing of TOC approximately at 50-60% in all flasks. Thereby it was demonstrated that it is possible in Moscow climate conditions during spring – autumn period to apply phototrophic microorganism E. gracilis strain for surface water treatment and in this case total lipids content a stay the same as in control cultivations.
Wastewater treatment of industrial enterprises via adsorption method
Authors: Atamanova O , Tikhomirova E , Koshelev A , Istrashkina M , Politayeva N , Podolsky A
Published: November 2019

The publication justifies the feasibility of adsorption method of industrial wastewater treatment from aromatic compounds. Objects and methods of research are described. Studies of adsorption mechanisms of aromatic compounds on bentonites of various modifications made it possible to establish the most effective sorption rock clay-based materials, as well as filter compositions. Bentonite modified with carbon nanotubes after heat treatment 550 ° C proved to be the most effective with respect to the studied aromatic compounds. The principle of combining sorbents in a single filtering system, based on the sorbent selection for various groups of organic pollutants according to their ability to be ionized in an aqueous medium, has been proposed and investigated. Three most effective multicomponent adsorption filter compositions for sewage treatment from nitro and amino compounds were established. The proposed approach is aimed at designing local water treatment stations for industrial enterprises to deal with aromatic compounds via use of multicomponent adsorption filter compositions.
Using the method of biotesting to assess the toxicity of waste medical and biological practices containing nanomaterials
Authors: Shulgina T , Nechaeva O , Torgashova A , Darin N
Published: November 2019

One of the current modern scientific directions is the research and introduction of products obtained using nanotechnologies into various spheres of human activity. Among the variety of nanostructures, metal nanoparticles are found to be the most widely used, which, due to the uniqueness of their properties and small size, are considered as the most promising agents in the composition of bactericidal agents. They are used as specific carriers of drugs and as components in the composition of antibacterial agents. In addition, it has been proven that the bacteriolytic and bacteriostatic properties of some metals are greatly enhanced with decreasing size. Nanoparticles of various metals, among which silver nanoparticles are the most widely used, can be used independently; however, their high ability to aggregate requires the choice of stabilizers, which usually use natural and synthetic polymers. However, their use is limited due to the high toxicity of metallic nanoparticles. Therefore, the search for the safest options for metal nanoparticles is relevant. This article presents data on the toxicity study of prototypes of silver nanoparticles stabilized by synthetic and natural polymers on biological test objects.
Application development for accidental pollution assessment on chemical manufacturers (pollution from chemical waste)
Authors: Nosov V , Tindova M , Zhichkin K , Mirgorodskaya M
Published: November 2019

Considering that in recent decades there has been a dramatic increase in the amount of industrial disasters, among which accidents on chemical facilities retain a significant place, forecasting tasks and accident consequence assessment on hazardous chemical facilities are analyzed in this paper. The task of the emergency area size determination, as well as the determination of building destruction level, and the facility personnel and public expenses. The objective of the paper is to review the existing methodologies of forecasting and create a software system for accident consequence forecasting on hazardous chemical facilities. Methodology. The analysis of different methods of damage estimation, conducted by the author, allowed for the general scheme of damage from accidents on potentially hazardous facilities estimation to be made. Furthermore, the author analyzed potential objects of chemical pollution in the Saratov region. The paper demonstrates phases of theoretical development and implementation of software program for accident consequence assessment and modeling on hazardous chemical facilities. The developed software system has a connection with Google Maps GMap.NET, which allows to visualize the obtained assessment results. Results. The result of practical implementation of the application developed by the author is an accident model for a facility, using chlorine substances, the amount of pollution measurement and territory pollution determination. Conclusion. The paper shows that the implementation of the program system developed in the work of organizations will help the heads to minimize possible losses of working personnel, public and organization financial losses.. The author notes that the application developed is free from the main disadvantages of existing programs, more specifically, the absence of the possibility to estimate the physical damage caused by the accident.
Technology of regeneration and recycling of frying fats by using a new microgranulated nanosorbent in the catering
Authors: Eliseeva S , Simakova I , Perkel R , Kostenko J , Smolentceva A
Published: November 2019

The article considers the technological capabilities and prospects for regeneration of frying fats in the catering enterprises using active filtration by a micro-granulated nanosorbent with subsequent recycling. The offered recycling technology involves the restoration of the quality of degraded frying fat with the purpose of its reuse and/or subsequent utilization. It is known that degraded frying fats contain products of oxidative and hydrolytic decomposition which vary according to their composition and structure. Actually, there is no universal technology that would provide the quality and safety indicators of frying fat for its further usage both in catering or for recycling in the market of secondary raw materials. Development of new microgranulated nanosorbent is based on fundamentally new technologies for modifying the surface of highly dispersed clay minerals of the Russian raw materials market using carbon nanomaterials. The granular sorbent is more preferable for use in catering, it allows easy separation of oil from the adsorbent without significant effort spent on filtration. The granular sorbent is lighter, more voluminous, and it significantly increases the adsorption efficiency even by contact method. The authors propose the technology of regeneration and recycling of frying fats with using new microgranulated nanosorbent in the catering enterprises.
Components of solid municipal waste in construction compositions
Authors: Fomina N , Polyanskiy M
Published: November 2019

The effectiveness of chemical, thermal, mechanical and complex methods of disposal of polymer waste was analyzed. The results of studies aimed at the development of the composition of a thermoplastic binder using polymeric municipal waste, taking into account the sample sizes of various components in waste sorting complexes, are presented. The binder is filled with mineral powders and shredded wood waste. Received compositions are used for the manufacture of construction products with a long life cycle. Standard methods for determining the properties of products for constructional purpose, the parameters of the fillers were used. Compositions for the manufacture of polymer-mineral composite building materials are offered. The optimal parameters of filling and dosage of functional additives are established.
Selection of bacteria capable of biodegradation of organic nitrogen-containing compounds and metagenomic analysis of their living environment
Authors: Maksimov A , Vladimirova E , Pavlova Yulia , Shilova Anna
Published: November 2019

Samples of karst lakes, rivers, industrial effluents, and natural soil were studied for selection of bacteria for biodegradation. A metagenomic analysis of the used natural and man-modified media was carried out. It has been established that the most unique are the compositions of the metagenomes of natural karst reservoirs, as well as microcenoses of industrial effluents. Most of the detected bacteria belong to Proteobacteria. As a result of selection, strains of microorganisms with high activity of nitrocellulose biodegradation, aromatic nitrates, quinoline derivatives and amides were obtained. In particular, Pseudomonas strains and R. erythropolis, effectively utilizing nitrobenzenes, nitrocellulose, quinolines, which were isolated from industrial effluents. At the same time, Pseudomonas strains were isolated from the natural karst lake, which quickly utilized the nitrocellulose. It was also found that natural soils contain a large number of prokaryotes that can utilize organic nitrates. The results confirm the view that natural environments, due to high metabolic diversity, are the richest source of producers of a wide variety of enzymes. An obvious reason for the proliferation of the metabolic systems of technogenic pollutants in natural environments is the presence in natural environments of some quantities of their structural analogues - nitrogen-containing plant metabolites and soil microflora, as well as lignin decomposition products.
Effectiveness of use of phosphogypsum on the solonetzic soils of Siberia and Ural
Authors: Scipin L , Scipin D , Zakharova E , Kustysheva I
Published: November 2019

The problem of rational use of saline soils as applied to the specific region becomes one of the main problems in Russia as well as abroad. The article describes the potential possibility to include these soils for rational land utilization in agro-industrial complex system. This will allow us to broaden the degree of their utilization on ploughed fields, hayfields and pastures in Siberia and Ural. Area of these lands as applied to this territory is more than 10 million ha. Obligatory chemical melioration is required for using of these soils on the level of climatic soil type. Its carrying out using gypsum, phosphogypsum and other ameliorants-coagulants allows us to increase fundamentally the fertility of solonetzic soils with their following implementation as yielding agricultural fields. It’s important to note that influence of ameliorants-coagulants takes place up to 40 and more years and their dose is up to 20 t/ha for perennial grasses and 40 t/ha for crops. The mentioned regions possess mineral, productive and scientific resources for the solution of such an important problem in conditions of Siberia and Ural.
Utilization of wastes from grain processing industries
Authors: Efremova S , Kulikova Ye , Konovalov V , Politaeva N A
Published: November 2019

Waste materials resulting from the grain processing industries are harmless and easily amenable to enzymatic and microbial bioconversions. Basidiomycetous mushrooms grown in vitro are promising producers of protein and essential amino acids. Mushroom biomass production under appropriate cultivation conditions using agricultural by-products is a cheap and affordable way to obtain a high-quality food product. The present work explores the possibility of using grain wastes for the cultivation of golden oyster mushrooms under deep cultivation conditions. For these purposes, cornmeal was used as a source of carbon waste and gluten as a source of nitrogen. A high substrate colonization rate was observed. The fruiting cycle lasted about 26 to 28 days on the studied substrates. The most prolonged cycles were obtained on the medium supplemented with sawdust. The maximum and the minimum yields were obtained on wheat straw substrate (171.2 g per kg of substrate) and a grain waste substrate (113.4 g per kg) respectively. On birch sawdust subtrate and on a substrate of grain waste and birch sawdust mixture, the yields reached 143.2 g and 130.3 g in this order. The average yielding crop attained 113.4 g of fresh mushrooms grown on 1 kg of substrate under a relative humidity of 70-75%. This promising work stream not only proposes a waste disposal method, but also, a significant source of income for the grain processing enterprises.
Composite systems using ash from burning production waste
Authors: Efremova S Y , Zubrev N I , Panfilova M I , Matveyeva T V
Published: November 2019

This article proposes a method of obtaining composite solutions using ash from industrial wastes as a structuring additive. Their introduction into the technology of composite solutions not only as modifiers of the structure and properties of composite binders, but also as fine additives, can significantly reduce the cement consumption and prevent waste placement, as well as, improve the performance properties of the latter and obtain new promising types of materials.

During this study, the chemical and mineral composition of the ash was determined and the hazard class was calculated. Structure formation in composite solutions was studied when cement was replaced with different amounts of ash. The possibility of replacing 10% of cement with ash without loss of the technological parameters of the system has been established.
Substantiation of the expediency of using the effect of electric fields on the process of moisture removal from porous waste structures
Authors: Kholudeneva A
Published: November 2019

During this study, information was collected and analyzed in the perspective of producing an electroosmotic installation, in other words, a converter of colloidal polydisperse systems into capillary-porous by electroosmotic dehydration in order to reduce the residual moisture of sludge from sewage and the pulp and paper industry. Exponents were taken as models expressing the mass of the pulp in function of the drying time and the value of electric current. According to the coefficients of determination, the models were consistent with the initial experimental data. Exponential models were used to further optimize the process of converting colloidal polydisperse systems into capillary -porous.
Technology of biscuit semi-finished products using recycled pumpkin seeds
Authors: Moskvicheva E , Timoshenkova I , Chernikova D , Fedinishina E , Bernavskaya M
Published: November 2019

A possibility and expediency of pumpkin seeds flour utilization for production of biscuit semi-finished product was studied; the influence of the flour on consumer properties of the product was investigated. Studies were conducted on organoleptic and physicochemical indicators of the finished biscuit semi-finished products. Grounding on the implemented studies a new production technology of pumpkin seeds flour based biscuits was developed, shelf life, biological, and nutrition value were identified. It was established that the optimal ratio of pumpkin seeds flour and starch is 90.5±0.5% to 9.5±0.5%. It was established that after consuming 100 g of the biscuit with a complete substitution of wheat flour to the gluten-free mixture 44% of daily need in magnesium, 50% - in selenium, 39% - in copper, 48% - in phosphorus, 46% - in manganese, 36% - in vitamin B9, and 36% - in linoleic acid is satisfied.
Solving the problem of using dairy waste in Russia
Authors: Pilipenko T , Belokurova E , Pankina I , Shlykova A
Published: November 2019

The present work is devoted to the problem of whey utilization, which is a by-product in the production of cheese and curd. We carried out analysis of modern Russian and foreign inventions aimed at waste-free milk treatment. We propose a modern waste-free method for curd production, which ensures the full use of the milk components. We carried out modeling of curd production process. The curd production process was presented as a combination of the most important technological operations – ultrafiltration whey treatment, mixing, thermocoagulation and clot treatment. We developed a structure of information flows, which totally characterizes waste-free technology of curd production. Alongside with that we proposed a structure of information flows accepted for mathematical modeling of the process. We propose models for formation of mathematical expectation of protein content in curd depending on the process factors, for which we used the regression equations. In this case, it turned out to be expedient to use linear dependencies. This can be explained by the fact that theory, research methods and calculation of linear models are developed deeper than others and require less computation. The question of applicability of such a model was resolved on the basis of checking its adequacy. The task of calculating the parameters of the model was solved on the basis of experimental data processing, which are the results of a passive experiment on study the waste-free curd production. Mathematical processing of experimental data allowed us to derive a regression equation and establish a correlation between the factors of curd production process and its protein content.
Technique of determining the effective temperature conductivity coefficient of organic raw material porous layer
Authors: Bukhmirov V , Kolibaba O , Gabitov R , Dolinin D
Published: November 2019

It is necessary to know for calculation of solid household wastes thermal processing thermophysical characteristics. Existing methods consider the solid household waste layer as a multicomponent mix which thermophysical characteristics are defined taking into account volume fractions and properties of components, layer porosity thus not. A technique is proposed for determining the effective coefficient of thermal diffusivity of a multicomponent porous layer, constructed on the basis of the solution of the inverse heat conduction problem. The base of problem-solving procedure is the method of the discrete satisfaction of boundary conditions (DSBC). According to the proposed method, the dependence of the effective coefficient of thermal diffusivity of solid communal waste of the average morphological composition on the temperature and porosity of the layer was determined. The proposed technique can be used to determine the effective coefficient of thermal diffusivity of bodies with different porosity structures.
Multifunctional electronic devices protected and automatic of modern electricity system
Authors: Popov M G , Bocharov Yu N , Gurevich E I , Halilov F H , Popov V V , Akhmetov T R
Published: November 2019

The report reflects the long-term solutions for the modernization of main means of emergency control and protection of integrated power systems in the implementation of adaptive control algorithms.
Immersive media in simulators of complex ergatic systems
Authors: Sergeev S , Burmistrov I
Published: November 2019

This paper shows a change in the paradigm of medium-oriented training of complex systems operators on simulators using high-precision models of real control systems and their application environments. Evolution of the technogenic environment leads to an increase in the complexity of professional activity, which hinders the implementation of simple algorithmic learning technologies. Forecasts to reduce the role of man in ergatic systems are not justified. New ergatic systems using artificial intelligence technologies require from operators qualities that exceed human capabilities, which requires an examination of projects and an assessment of user control complexity. The reasons for the non-classical “complex learning” methodology, which takes into account the student’s self-organization and orientation in a complex dynamic context, are shown. Promising methodological approaches to the development of simulators that implement symbiotic medium-oriented learning are considered.
3D Printed Plastic Tool for Al Thin-Sheet Forming
Authors: Aksenov L B , Kononov I Y
Published: November 2019

Shown prospects of 3D printed plastic tooling in the processing of metal forming. The study of the process of thin sheet forming of aluminum 3003 ANSI established that in this process of destruction and plastic deformation of the plastic tool does not occur. Lubrication of plastic matrices and punches were not required, as they have anti-friction properties. Computer simulation of this process in the software system “Simufact.forming” accurately reflects the force parameters, stress-state of plastic tool and the actual course of the process of forming the blank, including the spring-back of the part after forming. Technology of sheet forming with plastic tool can be recommended for single and small batch production.
Possible use of processed ferromanganese concretions for production sewage purification
Authors: Sulimova M A
Published: November 2019

This article describes a possible scenario for ferromanganese concretions usage as a sorbent for purification of wastewater obtained from mining enterprises.
Investigation of the multi-layer open cell foam filter model using numerical simulation and experimental studies
Authors: Soloveva Olga V , Solovev Sergei A , Shamsutdinov Emil V , Sheshukov Evgeny G
Published: November 2019

In this work, we studied the influence of the internal features of an open cell foam material structure on the efficiency of particle deposition and the pressure drop value of the medium. Constructing of the open cell foam filter models is based on the Distinct Element Method, which allows creating geometry with a random arrangement of pores in space. Calculations of the flow field and particle trajectories were performed using the ANSYS Fluent software package (v. 19.0). Experimental studies were conducted using samples created on the basis of the inverse matrix of 3D printed computational models. Also, models of various geometries with a fixed porosity of the medium are considered. Conducted numerical and experimental studies show that the filter model with the lowest porosity provides the highest deposition efficiency of particles. For a given fixed porosity of the medium, a filter with a change in the cells in diameter across the layers gives a lower value of the pressure drop, which is a significant advantage. The results can serve as the basis for creating aerosol filters with improved characteristics.
Enrichment of ash and slag waste generated by burning of fuels with additives
Authors: Zvereva Elvira R , Zueva Olga S , Gilfanov Kamil K , Tutubalina Valeria P
Published: November 2019

The existence of opportunities and prospects for scarce metals extraction from ash and slag waste of high-sulphur fuel oil burning was noted. The volatile ash produced during fuel combustion consisting mainly of metal oxides contains highly toxic substances. Their binding in a zone of burning of fuel is important not only for the purpose of extraction and further use in industry, but also to prevent their harmful environmental impact. It was shown that in the case of petroleum fuel oil an effective way to improve the performance of the fuel while maximizing the adverse environmental consequences of its combustion is to develop new generation effective fuel additives and improve filtration systems for flue gases. It has been established that the use of additives based on carbonate sludge makes it possible to achieve greater binding of metal oxides to non-volatile compounds in the burning zone of the fuel and their reduction in the composition of the emission gases. The mutual using of carbonate additives with the admixture of carbon nanotubes the effect may be even greater. Rational ash and slag waste utilization through the use of their beneficial properties will allow to free occupied areas and reduce environmental damage to the environment.
The effect of fine particle influence on numerical simulation of bidisperse fluidized bed
Authors: Soloveva Olga V , Solovev Sergei A , Shamsutdinov Emil V
Published: November 2019

In this paper, we consider methods for choosing the effective diameter of solid particles for fluidized bed modeling using the Euler-Euler approach to describing a multiphase medium. Calculations are carried out for the modal average diameter Dmod and average diameter of Sauter D32. Studies have also been conducted for the bidisperse composition of particles, with separation into large and small fractions. The results of numerical simulation were compared with experimental data.
Simulation of heat transfer processes in cooling systems with heat recovery
Authors: Sinitsyn Anton , Rakov Vyacheslav , Eperin A P , Rundygin Yu A , Rusinov R V , Izmailov R A , Simonov A M , Yun V K , Mihin Anton , Akhmetova Irina
Published: November 2019

The article considers modeling of modern heat exchange systems which use thermal energy for its beneficial use. The proposed mathematical model makes it possible to investigate systems with utilization of thermal energy. The article presents the results of simulation of heat exchange processes using heat energy recovery for internal combustion engines.
Thermal calculation of the installation for the moisture evaporation from petroleum products
Authors: Surikova Alisa , Sytsyanko Elena , Kosmach V F , Titovec Yu F , Akhmetov T R
Published: November 2019

The article presents data on the verification thermal calculation of the existing installation for moisture evaporation from petroleum products. The measures to increase its performance and reduce specific fuel consumption are proposed.
Non-chemical water treatment in unified light and sound field and testing on waste water decontamination
Authors: Lebedev O , Gavrilov Yu , Timkovskii A L , Bezrukova A G , Lezhnev E I , Polyanskii V A , Timofeev A N , Akhmetova I G
Published: November 2019

The paper presents the results of testing of a high-performance method for decontaminating sewage, involving combination of ultrasonic and ultraviolet exposure at the final step of water purification aimed at destroying pathogenic microorganisms and thereby preventing the spread of infectious diseases. A variation of the method was developed and patented by the authors and passed the test at one of the most advanced water facilities in Russia which is the Vodokanal of St. Petersburg. The combined unit was manufactured at OOO Novotech-EKO and installed at the South-West Wastewater Treatment Plant (SWTP) of Vodokanal of St. Petersburg. The results of the test showed the efficiency of combined ultraviolet and ultrasonic wastewater treatment, both in terms of intensifying disinfection and in terms of the stability of the plant operation by preventing biofouling and salt deposition on the surface of the lamp casings. The latter fact was the basis for the pilot project of improvement of the existing system of UV wastewater disinfection at the SWTP.
Lemna minor cultivation in the climatic conditions of Saint Petersburg
Authors: Kuznetsova T , Politaeva N , Ivanova A R , Lezhnev E I , Polyanskii V A , Matisov B G , Mukhametova L R , Karmazina E V
Published: November 2019

Cultivation of duckweed Lemna minor in conditions of St. Petersburg was carried out. Two cultivation variants were studied: 1- in a natural reservoir of Petergof; 2 - in an artificial reservoir at the yard of Peter the Great St. Petersburg Polytechnic University (Russia) during a period from May to July 2017. The following cultivation conditions were determined: lighting, temperature. The population growth intensity was estimated by increase of plant cover area of the pond. The most favourable conditions appeared to be at natural pond in Petergof. Daylight features, lightning intensity of the Leningrad Region are less favourable than that for south Russian regions, so biomass production rate is drastically lower. However, the climatic characteristics (moderate climate, transient from continental to marine) allows increasing L. minor cultivation period: from May to November inclusive. We carried out atomic-physiological investigation of fronds in summer and autumn, as well as epidermis and chlorenchyma cell analysis, which allow one to characterize photosynthesys system of the plants.
The study of the properties of ABS plastics and polyamide products, made by 3D printing for use in turbine construction
Authors: Barskov V. , Besedin S. , Rassokhin V. , Smetankin A. , Besedina K. , Lavrov N. , Panfilov D. , Smirnov Y. , Lypar Y. , Mukhametova L R
Published: November 2019

Physical and mechanical tests of samples made from ABS plastic and polyamide obtained by 3D printing were carried out. Based on the results of experimental studies, the possibility of using additive technologies in the manufacture of low-power turbo generator impellers has been shown.
Mechanical characteristics of Al-Al2O3-SiC metal matrix composites made by stir casting technique
Authors: Gopala Krishna S V , Subrahmanyam B V , Lakshmi B
Published: November 2019

The present investigation focuses on Al-Al2O3-SiC metal matrix composites were prepared by stir casting technique. In this, Pure aluminium (varies proportionately to the reinforcement) act as a base metal and reinforced with Al2O3 (standard wt 3%), SiC (varies Wt 3%, 5% and7%) has taken. The samples were prepared at the temperature of 750˚C Aluminium (liquid state) and to warm the reinforcement materials at 300˚C mixed with it by stirring of 350rpm for equally distributing the reinforcement material while it was consolidated at one place due to density differences. Hybrid composites are potential application for aircraft and space industries because of higher resistance, lower weight to strength ratio, creep resistance. To investigated the mechanical behavior of hybrid composites like hardness, Tensile strength and density.
Effect of nano-crystalline TiO2 addition on reciprocating frictional behaviour of alumina ceramics
Authors: Haldar Partha , Kumar Bhattacharya Tapas , Modak Nipu
Published: November 2019

We report the effect of normal load and sliding frequency on the tribological performance of alumina ceramics in relation with nano-crystalline T iO
2 addition. Tribological studies are conducted by reciprocating a silicon nitride ball on the prepared samples in dry condition in a linear reciprocating tribotester. Reciprocating friction tests are performed with sliding frequency of 15, 30, 45 and 60 Hz and at normal loads of 0.3, 0.5, 0.7 and 1.0 kg. The friction coefficient increases with increasing sliding frequency, normal load but decreases with nano titania addition. The coefficient of friction sharply increases at the level of sliding frequency from 30 Hz to 45 Hz. As the coefficient of friction gradually decreases with increase in T iO
2 addition, it can be inferred that alumina ceramics with T iO
2 addition upto 4 weight percent can be used as ceramic engine components, cutting tool inserts.
Effect of sintering atmosphere on the electrical properties of lanthanum doped barium titanate: an impedance spectroscopic study
Authors: Praharaj S , Singha A , Mallick N , Rout D
Published: November 2019

The electrical properties of 0.1 mol% La-doped BaTiO3 was investigated by impedance spectroscopy after sintering the sample in air and H2 at 1350 °C. H2-sintered sample showed more semiconducting nature than air-sintered one due to a higher level of oxygen loss accompanied by reduction of Ti4+ to Ti3+. The overall resistance of the sample decreased with rise in temperature and change of sintering atmosphere from oxidizing to reducing. The higher value of activation energy obtained from Arrhenius activated hopping frequency f
H for H2-sintered sample describes the delayed onset of frequency-dispersion in the conductivity curves than the air-sintered sample. The conductivity relaxation was studied in the light of frequency-dependence of the imaginary part of electric modulus and scaling studies of the real and imaginary parts of Z* elucidating the thermally activated relaxation dynamics.
Study of the output responses using Utility concept coupled with Taguchi Philosophy during EDM machining of nickel-based superalloy Inconel 718
Authors: Banik Dipraj , Rahul  , Bhattacharjee Subhankar , Debnath Biswajit , Huang Hu , Routara B.C.
Published: November 2019

The primary objective of this research paper is to get the optimum combination of input process parameters such as peak current (IP), open voltage (Vg), pulse-on-time(Ton) & duty factor(τ) for EDM machining of Inconel 718. The output process parameters that we got and studied after experiments were materials removal rate (MRR), electrode wear rate (EWR), and surface roughness (SR). An orthogonal array of process parameters was created, using Minitab software as the design of experiments (DOE). For a single domain of multiple output response parameters, we used the utility method. After that, we used Taguchi optimization method to find out the optimal parameter setting for higher materials removal rate (MRR), lower electrode wear rate (EWR), and lower surface roughness (SR).
Mechanical Behavior of Ultrasonic Spot Welded Aluminum to Cupro-Nickel Sheets for Battery Tabs
Authors: Das Soumyajit , Prasad Satpathy Mantra , Chandra Routara Bharat , Kumar Sahoo Susanta , Gantayat Subhra
Published: November 2019

Ultrasonic metal welding process has received noticeable attention throughout the last few years because of their proper application in comparison to the conventional fusion welding process. Fusion welding of dissimilar metals like copper and nickel, copper and aluminum alloy is always a difficult task due to the different physical, chemical, thermal properties, poor control of grain size and it has a deleterious effect on mechanical properties. Automotive industries have been widely accepted the ultrasonic metal welding process for assembling lithium-ion battery tabs. The aim of this current work is to investigate the weldability of two dissimilar metals namely aluminum (AA1060) and cupronickel (UNS C71500) sheets at various levels of welding time, vibration amplitudes and welding pressures with a fixed ultrasonic frequency of 20 kHz. The highest ultimate tensile shear strength test of joint achieved at highest vibration amplitude with moderate welding pressure and weld time. Weld quality determining characterization is introduced for the weld region to establish a relationship between physical attributes with the microstructural phenomenon.
An Evaluation on Green Manufacturing: It’s Technique, Significance and Rationality
Authors: Bisoyi Bhubaneswari , Das Divyajit , Srinivas Subbarao P , Das Biswajit
Published: November 2019

This research paper is focused on designing the environment through green manufacturing method, the use of eco-friendly products, conservation of energy, and the manufacturing of products with a reduction in the waste material. The research paper also draws attention towards the utilization of green manufacturing technique for modulating a product that is sustainable, reusable, and diminutive existence. The key objective of implementing green manufacturing is to protect the eco-system and to ease the expenditure. With unprecedented competition globally results in the improvisation of the manufacturing operation for providing better products and services. Emission of greenhouse gases is a major cause of climate change, global warming, and environmental degradation. It also results in unnecessary dissemination of energy that would be used for the betterment of society. One of the promising approaches to creating a balance in the eco-system is through the implementation of green manufacturing. The techniques of green manufacturing can be applied to reducing pollution level, minimizing waste, facilitates financial development and marmalade reserves. The present research paper focuses on accomplishing green manufacturing by means of a variety of procedures that has a tremendous influence on diminution in pollution and non-biodegradable waste products.
Experimental analysis of mechanical and structural properties of hybrid aluminium (7075) matrix composite using stir casting method
Authors: Singh Rathaur Anand , Kumar Katiyar Jitendra , Kumar Patel Vinay
Published: November 2019

Al-7075/Si3N2/ZrO2 hybrid metal matrix composite is developed using stir casting method. The mechanical behaviour of the developed composite is carried out using impact test, tensile test and hardness test as per ASTM standards. The micro structural analysis shows that the grain boundaries is having inter-dendritic network of silicon nitride and zirconium oxide particles and it is distributed uniformly in an aluminium matrix. Furthermore, a considerable increment in the tensile strength, hardness and wear properties of the hybrid composite was observed with increasing the percentage reinforcements of zirconia (2, 4 and 6wt%) in Al-7075/Si3N4 composite (keeping a constant percentage of Si3N4 of 8wt%).
Tribo-performance of Thixoformed A356-5TiB2 in-situ Composites
Authors: Deepak Kumar S. , Dewangan Shailesh , Jha S.K. , Jha S.K. , Mandal A.
Published: November 2019

In the current work, thixoformedA356-5wt%TiB2in-situ composites were subjected to dry sliding wear. Further, the wear surface topography and wear debris was analyzed. The results show that wear rate is significantly influenced by redistribution of TiB2 particles in the matrix, refinement of fine globular α-Al grains and modification of eutectic Si. As expected, the thixoformed composites show better wear resistance than the alloy. Moreover TiB2 particles lower the coefficient of friction when reinforced in A356 alloy, in both gravity cast and thixoformed conditions. Also, it is interesting to note that there exist a linear relationship between wear rate and hardness of composites, irrespective of the processing history. The wear rate in the thixoformed composite is reduced by 48% as compared to gravity cast alloy. The improvement in wear resistance in the present thixoformed composite is not only due to the presence of fine TiB2 particles but also due to refinement of α-Al and eutectic Si caused due to the plastic deformation during thixoforming. In addition, high hardness and strength of thixoformed specimens compared with gravity cast parts has resulted in lower coefficient of friction in thixoformed A356-5TiB2 in-situ composite.
Investigation of impact performance of aluminum metal matrix composites by stir casting
Authors: Samal Priyaranjan , Vundavilli Pandu R.
Published: November 2019

In the present study, the impact behavior of in-situ synthesized aluminum alloy 5052 reinforced with titanium carbide (TiC) was investigated successfully by stir casting process. The Charpy test was conducted to evaluate the impact strength of the composites. Field emission scanning electron microscope was utilized to examine the fracture mechanism of the impact test. With increase in the TiC content, the impact strength was found to be decreased due to the brittleness of the composites. The fracture surface of the composites was characterized by cracks, voids, delamination confirming the brittle nature.
ANSYS-based Force Analysis on a New Horizontal Axis Wind Turbine Shield
Authors: Seitenov Daniyar , Mir-Nasiri N. , Hazrat Ali Md.
Published: November 2019

The importance of renewable energy sources cannot be denied in the era of increase of greenhouse gas emission and depletion of fossil fuels. The wind energy and design of new yet effective windmills become a necessity nowadays. This paper introduces a new configuration of wind turbine with a horizontal axis and ANSYS-based dynamic analysis of its high-speed protection shield that protects the turbine from overspending at extreme wind conditions. In comparison to traditional horizontal wind turbine structure, HAWT blades have a flat shape, and they are exposed to wind stream in such a way that the wind forces are strictly perpendicular to the blade surfaces. This structure extracts more wind energy and minimizes the useless forces affecting shaft joints in traditional wind turbines. The ANSYS-based force analysis presented in this paper proves the advantage of using of protection shield in such windmill structure.
Information System for Asset Management
Authors: Fauzan R , Pamungkas V Y , Wibawa J C
Published: November 2019

The purpose of this study is to design an asset management information system in the form of desktop-based application design so that it can be used as a reference in implementing it into the application. With the application, it can facilitate BMN in making reporting related to assets control and management. Universities cannot be separated from the existence of assets owned, by seeing so many assets and development opportunities, there are often mistakes in planning, procurement, and inventory of data relating to assets. Sekolah Tinggi Pariwisata National Hotel Institute (NHI) Bandung is a College that organizes professional education programs in the field of tourism. In implementing its business processes, STP involves supporting assets owned by the State managed by the State Property section (BMN). In managing assets, which include the process of registration, request, acceptance, and maintenance of BMN goods still use the written recording process in the paper, as well as the process of making reports still using Microsoft Excel applications taken from the data written on the paper. From these problems, BMN requires a computerized information system design. System analysis methods uses Object Oriented Analysis and Design (OOAD), and Unified Modelling Language (UML).
Design of the Information System for Kindergarten Learning Evaluation used Kanban Methodology
Authors: Fitriawati M , Lestari R H
Published: November 2019

This study aims to produce an information system design that helps educators to evaluate learning in each semester systematically and easily accessible. Learning evaluation aims to determine the growth and development of students and see the success of the learning plan. 2013 curriculum is a curriculum that is currently being used by early childhood education. Therefore, it is necessary to design a kindergarten learning evaluation system to then create an information system for learning evaluation for kindergartens that helps teachers know the abilities of their students. The design of this system used descriptive research methods and information system design development methods that use the Kanban methodology, where the Kanban method helps design of the information systems for kindergarten learning evaluation for with the aim of harmonizing development in accordance with the wishes of users, educators who are early childhood education teachers directly in system development. The programmer to then be made by the programmer and used by kindergarten teachers later will use the results of this information system design later. The use of the Kanban method in this study makes it easy for programmers to be able to design their information systems.
Website Development of Indonesian Art Higher Education Institutions Historical Archives
Authors: Trihanondo D , Endriawan D
Published: November 2019

Art Higher Education Institution in Indonesia has been established since 1947, and ever since has developed in different parts of Indonesia. Indonesia as a country with rich culture and arts, has its own history and characteristics regarding its visual arts development. Prominent names in The History of Art Higher Education Institutions in Indonesia includes names, such as Simon Admiraal, Ries Mulder and RJ Katamsi. They had historical account of establishing Universitaire Leergang voor Tekenleraren (FSRD ITB) and ASRI located in Bandung and Yogyakarta respectively. The goal of this research and development is aimed towards information propagation regarding these historical data and information of art higher education institutions in Indonesia. The project was initiated by Creative Arts Department of Telkom University, which also acts as an art higher education institution. The website development methodology went through several phases, which includes data collections of art higher education institutions in Indonesia, qualitative research that includes interviews and observations of key persons, as well as using Website Generation Model methodology in its development. The preliminary results of this research project informs that the website has perform well in key objectives regarding needs, systems and learning process. In the future it is needed to also research similar projects in Indonesia such as online art database like IVAA (Indonesian Visual Art Archive) which originated in Yogyakarta. The preliminary conclusions of currently ongoing research are that it is necessary to build such online database to hold historical data about the subject, and that the visual aspects of the website have the most consideration for the success of this project. The impact of this research for current development is that the research give way to utilizing qualitative research as well as Website Generation Model in developing better and more attracting websites.
Design of Student Attendance Information System with Fingerprints
Authors: Rahmatya M D , Wicaksono M F
Published: November 2019

Student attendance is one of the administrative activities in each semester and the lecturer records the attendance of students to determine whether students can take midterm or final semester examinations. The aim of this study is to design a model of student attendance information system with fingerprints for exam needs. The structured approach method is used to develop this model. Context diagram and data flow diagram used to describe the system. The result of the study is a design of student attendance information system with fingerprints. The attendance records of students that have not been automated are prone to errors in calculating the number of student attendance. Therefore, designing this information system can help the lecturer by storing student attendance data using fingerprints. Attendance data will be automatically saved to the server.
Fingerprint Identification using Bozorth and Boyer-Moore Algorithm
Authors: Supatmi S , Sumitra I D
Published: November 2019

The process of fingerprint identification in the form of a binary image can be performed with a variety of algorithms to matching the fingerprint process. This study aims to determine the time processing for fingerprint detection using Bozorth and Boyer-Moore models. The result showed that both of the models could detection the fingerprint. This paper contribution is to compare and analyze Bozorth and Boyer-Moore algorithms. The comparison is performed by MATLAB simulation. The simulation results Boyer-Moore algorithm has faster identification process. On the other hand, Bozort algorithm has an advantage for identification of effect rotated or space translated fingerprints.