bluuebunny/crossref_metadata_2025 huggingface dataset:
Mathematical modeling of mass, heat and fluid flow in a reverberatory furnace for melting nickel-containing raw materials
Authors: Sharikov Y V , Quiroz Cabascango V E
Published: February 2021

The article presents analytical results on the use and distribution of energy in reverberatory furnaces with medium pressure gas burners to melt nickel-containing raw materials, by means of a numerical simulation of the furnace’s combustion space. The combustion flow and radiation of a reverberatory furnace powered by natural gas have been calculated and validated. The chemical composition of natural gas makes it the cleanest of fossil fuels, for this reason its use increases worldwide. The higher hydrogen/carbon ratio in its composition, compared to other fossil fuels, causes combustion to emit less CO2 per unit of energy produced. The flue gas outlet duct and medium pressure burners are represented and located as in a typical design to determine the effect on the efficiency of the reverberatory furnace. The results show the temperature field, the mass fraction of oxygen and fuel within the furnace’s combustion space and the comparison between the theoretical and practical efficiency of a furnace.
The use of esters as an inhibitor to prevent asphalt-resinous paraffin deposits
Authors: Galiullina I F , Nosirov D S
Published: February 2021

This article discusses the problem of asphalt-resinous-paraffin deposits in production and tubing pipes. As a rule, these deposits help to reduce the debit of the well with the subsequent failure of the sucker rod or electric centrifugal pumps that are installed at the wellhead. For this reason, the fight against asphaltene-resinous-paraffin deposits is an urgent research task. We considered the chemical method of exposure to asphaltene deposits, in particular with the use of esters, which are part of inhibitors. Today, a wide range of varieties of inhibitors is known that are used as substances that slow down physicochemical processes; the word inhibitor itself comes from lat. “Inhibere”, which means “delay, slow down”. Of the currently available inhibitors, an ester-based inhibitor has been proposed that can be used initially to prevent the accumulation of asphaltene deposits.
Optical and electro-optical properties of Tl1-xCuxGaSe2 (0 ≤ X ≤ 0.02) crystals
Authors: Matiyev A Kh , Uspazhiev R T , Gachaev A M , Khamkhoev B M , Matieva T A , Katsiev R M , Bagov A M
Published: February 2021

The anisotropy of the refractive index and the electro-optical effect in Tl1-xCuxGaSe2(0≤X≤0/02) crystals were studied. Refractive indices were shown to rise as they approach their own absorption band. The electro-optical effect in TlGaSe2 crystals was studied. It was shown that the EO effect in the case where the light and external electric field are directed along the “C” axis within the studied electric fields (up to 5 kV / cm) is quadratic. The quadratic EO effect for TlGaSe2 equals 1.3 · 10−9 CGS units. It was found that when the electric field is directed perpendicular to the “C” axis and the light is directed along the “C” axis the EO effect is linear. The results of the EO measurements are consistent with the fact that the TlGaSe2 compounds crystallize in a monoclinic lattice, with the space group Cc, but at the same time the TlGaSe2 crystals have higher symmetry than Cc.
Theoretical basis for constructing special codes for a noise-resistant downhole telemetry system
Authors: Tyncherov K T , Mukhametshin V Sh , Rakhimov N
Published: February 2021

The important task of efficiency improvement of oil reserves management is to obtain reliable and sufficient information based on well testing data. The paper studies the issue of converting binary convolutional codes to non-binary narrowed cyclic codes. The authors believe that the introduction of special coding makes it possible to significantly increase the noise resistance of downhole telemetry system due to the ability of the code to detect, localize and correct errors that occur during digital processing of downhole information. The developed mathematical model of the formation of a convolutional code is the basis for study the correcting capabilities of a computing system during digital signal processing.
Integration of electric and magnetic fields near wells
Authors: Gallyamov I I , Yusupova L F
Published: February 2021

The authors propose the method for studying electric and magnetic fields near oil and gas well. The determination of the electrical parameters of the soil near well allows choosing the optimal method of electrical protection. This is especially relevant in the presence of a “black insert” extending from a well. The results of the study and the adoption of an appropriate technical solution allow extending the period of trouble-free operation at the “black insert” section. The pipeline condition is monitored by pipeline magnetometry.
Improving accuracy and technology for manufacturing tricone roller bits
Authors: Khabibullin M Ya , Suleimanov R I
Published: February 2021

As a result, the control of the process of basing a roller bit in a chuck was experimentally tested and introduced into production by measuring the gap between the working surface of the restrictive ring and the calibrating surface of the cone in order to increase the accuracy of drill bit manufacturing. Bits with a diameter close to the lower limit value can be machined in a chuck with a restrictive ring of reduced diameter. Height differences of the cones are reduced by introducing into the production the method of group interchangeability of sections in height, measured in a direction parallel to the axis of the bit.
Creation of an suspended compressor for oil production from wells
Authors: Mingulov Sh G , Mingulov I Sh
Published: February 2021

The performed analysis of the design of suspended compressors used in the Republic of Tatarstan and the Orenburg region showed an insufficient degree of compressor pressure increase due to the presence of “dead” space in the compressor cylinder. The study developed a new design of suspended piston compressor for gas extraction from the annular space of the well and its injection into the discharge line, which allows increasing the degree of gas pressure increase by oil filling the gap between the piston and cylinder. The authors elaborated theoretical bases for calculation of hydraulic resistance to piston movement in the oil-filled cylinder of a piston compressor, which showed significant resistance due to small gaps between piston and cylinder.
Research of the Penetration Process of the Frontal Plow
Authors: Mamatov Farmon , Ergashev Ismoil , Mirzaev Baxadir , Pardaev Xofiz , Chorieva Dilsabo
Published: February 2021

The aim of the study is to study and analyze the process of penetration (deepening) of the frontal plow. Dependencies are obtained for determining the length of the deepening of the serial and frontal plows into the soil. The dynamics of the process of deepening of the frontal plow is analyzed depending on its dynamic characteristics. A differential equation is obtained that characterizes the process of deepening the frontal plow. Theoretical and experimental studies have established that the depth of the frontal plow is significantly affected by the weight of the plow, traction resistance and the relative position of its working bodies. The length of the path of penetration of the frontal plow does not depend on the width of the plow and is 2.0-2.5 m, which is 3-3.5 times less than the path length of a serial plow of equal width.
Technology Acceptance Model and Motivation-Opportunity-Ability Theory Influences on Indonesian Dota2 Gamer Customer to Customer Online Know-How Exchange
Authors: Utami Nugrahani Rah , Abdul Wahid Nabsiah
Published: February 2021

This study conceptualizes the influences of technology acceptance model (TAM) and motivation-opportunity-ability (MOA) theory on customer to customer online gamer knowhow. Although both TAM and MOA are well acknowledged and popularly applied in the literature, implementing both theories using the Indonesian online gamers scenario like Dota2 has not been carried out. This study reviews on the suitability of the theories to be extended into the virtual realm of Dota2. To achieve an understanding on this possibility is significant as the world is changing due to globalization and advancement of technology. This review has established the foundations of MOA theory in Multiplayer Online Battle Arena (MOBA) game environments. This indicates the possibility for the influences of perceived usefulness and perceived ease of use, motivation, opportunity and ability to be investigated on customer to customer online know how. The theoretical framework developed that explains the causal relationship among variables is based on the situational prime of Dota2. It is expected that future video game development based on this study’s framework can aid in the improvement of its players know-how.
K-Mean Clustering Algorithm in Grouping Prospective Scholarship Recipients
Authors: Nur Khomarudin Agus , Zakir Supratman , Novita Rina , Endrawati  , Zahiri bin Awang Mat Mohd , Maiyana Efmi
Published: February 2021

The accumulation files of scholarship recipient candidates currently become a problem in the selection process. Essentially, the accumulated data can be process to produced useful knowledge by utilizing data mining techniques. One of the data mining techniques is clustering that used as a method in this research. The purpose of this research is to generate new knowledge from accumulated data that can be used, one of example is in selecting prospective scholarship recipients. The research method used is the ADDIE version of Research and Development (RnD) (Analyze, Design, Develop, Implement, Evaluate). In generating new knowledge from a data warehouse, the K-Means Clustering Algorithm is used as a method of partitioning data into one or more clusters. The results indicates that the products produced were valid, practical, and effective to be used as a system in grouping prospective scholarship recipient data with the respective values of validity, practicality, and effectiveness were 0.94, 0.91, and 0.93.
Online-Based Academic Supervision during the Covid-19 Pandemic
Authors: Fendi Hasri , Hanafi Imam , Ayu Monia Fenny , Sudarman  , Aries Taufiq M. , Eka Putri Rahmi
Published: February 2021

The purpose of this study was to identify and to obtain information related to the problems in the academic supervision process encountered by the school principals during the Covid-19 pandemic. This study utilized a case study method to obtain data on the constraints and consequences of the Covid-19 pandemic on academic supervision activities at Senior High School (SMA N) in Bangkinang. Data were obtained through questions filled in Google form. The respondents in this study were 4 senior high school principals in Bangkinang. The results of this study were that during the Covid-19 pandemic, supervision was conducted online based on various types of online tools such as Google Meet, Zoom, Google duo and WhatsApp. However, the principals experienced several obstacles in conducting online-based academic supervision due to the absence of standard applications provided by the government to facilitate the process of supervision. Also many teachers did not master the use of information technology (IT).
Digital Based Education Through Econophysical Modeling
Authors: Izmuddin Iiz , Harahap Pandapotan , Awaluddin  , Syafitri Widya , Imamuddin M.
Published: February 2021

The purpose of this article is to describe the integration model of social and physical science into digital-based learning. Indonesia’s education system currently uses digital technology in the education process so that the absorption and teaching methods will be more easily understood. The use of Econophysical modeling in digital learning can be developed in the form of recording all transaction networks carried out by consumers using physics modeling in applied physics usage. Then every track record of transactions with physics modeling will be linked to Hardware, Software, and Contents Development. So that the data process will be formed very quickly from every existing transaction. Then all existing data will be collected in big data analysis which then becomes digital-based econophysical modeling. Its application in education by teachers and lecturers is administratively contained in the lesson plan and syllabus while in the learning process linked with Hardware, Software, Contents Development for the formation of modeling in learning econophysical courses.
Animation-based Learning Effectiveness in Physics Learning
Authors: Rahman Aththibby Arif , Mundilarto  , Widodo
Published: February 2021

21st century education requires teachers who can adapt to technological developments, including for physics teachers. Physics as one of the branches of science, studying and analyzing quantitatively the symptoms or natural processes. Physics is a science that studies the parts of nature and the interactions within them. The problem that is always experienced by students is the low learning outcomes caused by the lack of motivation in learning physics. Computer animation can be a solution offered to present effective learning in physics learning. Based on the results of the study it is known that the use of computer animation has a significant effect on the learning outcomes of physics and also the motivation of students in learning physics.
Learning Puzzle Model Contribution to Improve Math Subjects Learning Outcomes
Authors: Anam Fatkul , Hasanah Rofidatul , Firdaus Mega , Purnomo Agung , Noviyanti Masyitah
Published: February 2021

The study focuses to exceed student learning outcomes in mathematics subjects on polygon material using puzzle learning models in the fourth grade of Gebang Elementary School 1 Sidoarjo, Indonesia. The study employs Class Room Action research method and learning puzzles as model with a Kurt Lewin approach through a single cycle and consisted of four main steps for each cycle: planning, action, observation and reflection. Data is gathered with observations and tests. The results revealed that the implementation of the puzzle learning model on mathematics subject on polygon material can improve the students’ score up to 86% in the fourth grade of Gebang Elementary School 1 Sidoarjo, Indonesia and can aid the achievement criteria of learning process between students and teachers are categorized as “very good”
Blended Learning Approach in Arabic Learning
Authors: Rozi Fathor , Rosidah Rosidah , Ni’mah Mamluatun , Masun Hilyatul , Juaeriyah Khasyiffah , Maimuna
Published: February 2021

This study aims to analyze Arabic learning by using a blended learning approach in management perspective. This study uses a qualitative approach with case study, with a research site at the Madrasah Aliyah Lubbul Labib, Maron, Probolinggo, East Java, Indonesia. The results showed that; Arabic learning management is carried out through several stages, namely; planning, which includes learner analysis, state objectives, determination of material, methods, approaches, media and evaluation techniques that will be used in learning activities. Furthermore, the results of the planning are implemented in online learning activities and evaluated according to what has been planned.
Learning Agility During Pandemic; Outstanding Strategy in Language Learning by Using Zoom Application
Authors: Mundiri Akmal , Eka Mahmud Muchammad , Ubaidillah Muhammad , Azizah Nur , Zuhro Lailatus , Hasanah Faiqotul
Published: February 2021

During the pandemic, learning has been disrupted into learning that is not limited by the partition, both class and time barriers. This disruption requires teaching staff, especially language teachers to be agile in playing the role of teaching staff who are adaptive to change. The innovations made are related to how to implement language learning strategies based on virtual learning environments such as the zoom meeting application. The offer of features and simplicity in using the application makes teachers make it a top choice. Therefore, this study aims to uncover outstanding strategies in language learning with a zoom application. This research uses a qualitative approach with case study. This research site is Islamic University, in the area of Tapal Kuda, East Java, Indonesia. The results showed that, outstanding strategies in language learning by using the zoom application were carried out by collect information about student conditions, provide instructions for using the media, modifying the language learning goals, applying self-directed learning, and providing independent learning instructions through the share screen feature.
Application of Google Classroom Applications as Media Thematic Learning in the Pandemic Period
Authors: Aisyah Nur , Rahmatullah  , Sayfullah Hasan , Anggraini  , Kusmiati  , Sa’diya
Published: February 2021

This study aims to determine student understanding of the use of e-learning (Google Classroom) in supporting learning. The research method used is a qualitative method with observational and interview research procedures. The results showed that the understanding of the use of e-learning (Google Classroom) was quite easy to understand and had a positive effect in supporting learning. This shows that the students’ understanding of the use of e-learning-based learning media on learning is already quite maximal, therefore it is necessary to increase the use of these learning media aspects so that e-learning based learning can run better.
Misconception in Linear Equation System: The Case of Students Using Imitative Reasoning
Authors: Nurmawanti I , Darmiany D , Gunawan G , Radiusman R , Haryati L F
Published: February 2021

Imitative reasoning is one of the strategies students used in solving mathematical problems. The imitative reasoning links to the ways in which students using their prior knowledge on solving a similar problem. Those using imitative reasoning, in fact, could only comprehend a problem on its surface level without deeply conceptualise it. The issue leads to errors and misconception in answering linear equation problems. This study aims to analyse students’ misconception when solving linear equation problems, specifically in those using imitative reasoning. This is a qualitative study with 64 students participated in the study. The study reveals that the misconceptions can be found in erroneous calculation, the application of problem solving strategies, the correlation between procedure and concept as well as the solutions of linear equations in intersecting, parallel, and coinciding lines.
Bayesian analysis of turbulent transport coefficients in 2D interchange dominated ExB turbulence involving flow shear
Authors: Coosemans R. , Dekeyser W. , Baelmans M.
Published: February 2021

While turbulent transport is known to dominate the radial particle and energy transport in the plasma edge, a self-consistent description of turbulent transport in mean-field transport codes remains lacking. Mean-field closure models based on the turbulent kinetic energy (k⊥) and turbulent enstrophy (ζ⊥) have recently been proposed to self-consistently model this transport. This contribution analyses the diffusive particle transport relations of these models by means of the Bayesian framework for parameter estimation and model comparison. The reference data includes a set of isothermal simulations that not only include the scrape-off layer (SOL) but also the outer core region (in which a drift wave-like model is activated) and a set of anisothermal SOL simulations, both obtained with the TOKAM2D turbulence code. This analysis shows that thek⊥(–ζ⊥) model does not appropriately capture the diffusion coefficients for these new data sets, presumably due to the strong flows in the diamagnetic direction that appear in these new cases. While flow shear is expected to quench the turbulence and the turbulent transport, its effect was not explicitly taken into account in the earlierk⊥(–ζ⊥) transport models. As flow shear provides a new mechanism for the decorrelation of the turbulence, we propose to introduce an additional time scale in the diffusive transport relation asD∼k⊥/(ζ⊥+ΩS). Inspiration is drawn from shear decorrelation times reported in literature to propose several new candidate models, which are then analysed in a Bayesian setting. This allowed identifying irrelevant terms for certain models and to rank all models according to the Bayesian evidence. While the new models accounting for shear do improve the match to the data, significant errors still remain. Also, no single model could be identified that performs best for all data sets.
Resonant Axisymmetric Modes
Authors: Porcelli F , Yolbarsop A , Barberis T , Fitzpatrick R
Published: February 2021

Axisymmetric modes in shaped tokamak plasmas are normally associated with vertical displacement events. However, not enough attention has been given to the fact that these modes can be resonant in two different ways. Firstly, for a plasma bounded by a divertor separatrix, a generic n=0 ideal-MHD perturbation, ξ, is singular at the divertor X-point(s), where Beq · ∇ξ = 0, with Beq
the equilibrium magnetic field. As a consequence, n=0 perturbations can give rise to current sheets localized along the divertor separatrix. Secondly, a feedback-stabilized n=0 mode tends to acquire an Alfvénic oscillation frequency. As a result, a resonant interaction with energetic particle orbits can lead to a new type of fast ion instability.
Nonlinear radial envelope evolution equations and energetic particle transport in tokamak plasmas
Authors: Zonca Fulvio , Chen Liu , Falessi Matteo V. , Qiu Zhiyong
Published: February 2021

This work provides a general description of the self-consistent energetic particle phase space transport in burning plasmas, based on nonlinear gyrokinetic theory. The self consistency is ensured by the evolution equations of the Alfvénic fluctuations by means of nonlinear radial envelope evolution equations, while energetic particle fluxes in the phase space are explicitly constructed from long-lived phase space zonal structures, which are undamped by collisionless processes. As a result, this work provides a viable route to computing fluctuation induced energetic particle transport on long time scales in realistic tokamak plasmas.
Decoupling economic and energy growth: aspiration or reality?
Authors: Guo Jin , Li Chuan-Zhong , Wei Chu
Published: February 2021

Energy has long been a driving force of economic growth; however, it comes with environmental costs and security challenges. This study analyzes the energy–economy nexus and explores their decoupling possibilities by using cross-country data over the years 1971–2014. The results indicate that, while energy use and economic growth exhibit a typical inverted U-shaped decoupling relationship for the industrialized countries, they have been rising in tandem for the developing economies. Among factors, it is the economic scale, population size, and energy intensity that are the decisive factors. Among countries, it is the U.S., China, and India, which mainly dominate the global economy–energy trend. Overall, we conclude that any global economy–energy decoupling may confront challenges and uncertainty. To better decouple economic growth from energy use, we propose policies for more structural reforms, a clean energy system, improved energy efficiency, and efficient energy demand-side management.
Changes in the biochemical properties of yeast during oxygen saturation of semi-finished bakery products
Authors: Nazimova E V , Markov A S , Sergeeva I Yu , Romanov A S
Published: February 2021

Microbiological and biochemical processes caused by yeast are the main factors affecting the quality of bread. The ability to manage the vital activity of yeast allows you to regulate these processes and contribute to the intensification of technological processes in baking. An important factor that affects the activity of yeast is oxygen. In bread-making technology, oxygen is mainly considered as a factor that affects oxidative processes. The effect of aeration of bakery semi-finished products on the properties of yeast has not been studied enough. In this work, we studied the enzymatic activity (zimase, maltase), morphological characteristics, viability and quantity of water-soluble sulfhydryl compounds released by yeast when the yeast suspension and liquid sourdough were saturated with oxygen in the range of 4-16 mg / l. The lifting force of yeast when the suspension was saturated with oxygen improved by 23 %. Similarly, the lifting force of liquid sourdough changed when it was saturated with oxygen. Increasing the oxygen content 3 times increased the lift of the liquid sponge by 20 %. It was found that the accumulation of total sulfhydryl compounds in the control was more intense than that in semi-finished products saturated with oxygen. In general, the oxygen content in the yeast suspension and in the liquid sponge significantly activates the vital activity of yeast and, accordingly, intensifies the process of their preparation.
Scientific justification for the composition and technology of a phospholipid-plant food complex
Authors: Popov V G , Mozzherina I V , Shkolnikova M N
Published: February 2021

One of the promising and effective ways to make food products functional today is to use complex functional food ingredients (FFI), in particular, a phospholipid-plant food complex. Scientifically-based selection of ingredients provides balanced in terms of vitamin and mineral composition, capable of providing a corrective effect on the physiological systems of the body. FFI technology has been developed, consisting of fat-free rapeseed phospholipids, dry extracts of germinated seeds of naked oats and Melissa officinalis, succinic acid. The global trend in the food industry is the conversion of biologically active substances into a nanoform the main advantage of which is an increase in their digestibility. Amphiphilic molecules of long-chain phospholipids in an aqueous medium can spontaneously form liposomes that have prospects for use in food technologies as stabilizers of labile biologically active substances. Naked oats are well balanced in the composition of essential amino acids. The maximum number of free amino acids and short-chain peptides was found with a shorter seed germination time (up to 12 hours). The nutrient content of extracts of germinated seeds of naked oats and Melissa officinalis was determined. A range of concentration of ingredients at which antioxidant and immunomodulating properties of the complex are manifested is proposed. It is recommended to include in the daily food ration 40-60 g of a complex, both independently and as a part of foods. The purpose of the complex is to increase the body’s resistance to stress, primarily for people performing prolonged physical exertion in difficult climatic or environmental situations.
Innovative technology to obtain forage flour from keratin-containing waste by extrusion
Authors: Vasilenko V N , Frolova L N , Mikhailova N A , Dragan I V
Published: February 2021

When processing animals and birds in the form of by-products, a fairly large amount of keratin-containing waste (horns, hooves, hair, wool, fluff and feather) was formed. In secondary poultry evisceration products, almost 80% of the protein is found in feather-down raw materials, so solving the problem of converting pen keratin into a digestible form is more important from the point of view of mobilization of native protein reserves and environmental problems. To produce a high-quality feed product, which preserves the biological value of the raw materials as much as possible, it is necessary to minimize the time of heat treatment. At the same time, it is desirable to use cost-effective and environmentally friendly technologies. The latest biological waste recycling techniques that meet these requirements include extrusion technologies. The article proposes the technology of obtaining a forage protein supplement, which can completely replace fish flour in the diet without reducing the zootechnical and feasibility indicators of growing poultry, valuable species of fish and furry animals. The main advantage is that none of the existing technologies in the world without rigorous chemical treatment is not able to bring the digestion of keratin of feather raw materials to 85-90 % in 1.5 minutes of processing with maximum preservation of the most valuable amino acids. We presented the results of the production check on the effectiveness of feeding extruded feed with feed additive from keratin-containing waste for fish, providing a significant increase in body weight growth and improvement of meat.
Ways to reduce the total bacterial contamination of grain raw materials and bran in the production of all-mash
Authors: Lytkina L I , Shentsova E S , Kurchaeva E E , Pereverzeva S A
Published: February 2021

For the most complete satisfaction of human needs in food products and, especially, in products of animal origin, special importance is attached to the accelerated development of animal husbandry, which causes the development and strengthening of the domestic feed base. The main role in providing farm animals with high-grade high-quality feed belongs to the feed industry. Along with the fact that feed must meet all quality standards, they must meet the animal’s veterinary and sanitary standards. The sanitary state of feed is currently very relevant, since the successful development of animal husbandry implies a stable veterinary and sanitary well-being of the external environment for farm animals. The sanitary condition of all-mash depends largely on the microbiological characteristics of the raw material included in the recipe. Microorganisms are a serious cause of reduced quality and spoilage of products. Raw materials (wheat, corn, barley, bran, oats) supplied to feed mills for the production of compound feeds are largely seeded with saprophytic microflora and pathogenic microorganisms. Studies were conducted to determine the total bacterial contamination of wheat, corn, barley, oats and bran used for the production of all-mash, to identify the disinfecting effect of roasting processes, extrusion of raw materials and granulation of all-mash
Aroma profile of muscat wine from Citron Magaracha grapes grown in the Samara region
Authors: Bakharev V V , Feoktistov P A , Malyshkin S S , Paydulova S A , Bykov D E , Pavlova L V
Published: February 2021

Aroma is the one of the important organoleptic characteristics of wine. It determined by the volatile components of the grape berry, the components formed during fermentation and in the aging process. The aroma profile of muscat wine from Citron Magaracha grapes grown in the Samara region was first obtained using the method of liquid-liquid extraction and GC-MS analysis. The main aroma-forming components of the investigated wine are aliphatic and aromatic alcohols, terpene compounds, esters and acetals. Oxidized and esterified compounds are found among terpenes. Ethyl esters of C14-C18 fatty acids are present among the esters. A comparison is made of the main aroma components with profiles of typical representatives of muscat wines. A comparative analysis of the main aromatic components makes it possible to classify Citron Magaracha grapes grown in the Samara region as typical representatives of muscat grapes. Wine from grapes of this variety according to the complex of physicochemical parameters and the aroma profile can reasonably be attributed to muscat wines.
Influence of high-protein flour from sunflower shrot on the change in the properties of chocolate masses
Authors: Bobozhonova G A , Tkeshelashvili M E , Magomedov G O
Published: February 2021

The current trends forming a healthy diet dictate the need to create food products, including confectionery with high nutritional value. The use of nontraditional types of raw material in food production can contribute to their enrichment with proteins and micronutrients. The secondary resources of plant raw materials are currently actively used in solving food problems, being an additional source of naturally substances. A significant number of secondary resources is generated during the processing of sunflower seeds. High-protein flour «Bioproten» obtained from sunflower shrot with a protein content of 45-48% can serve as a perspective source of protein substances. The data on the amino acid composition of high-protein flour from sunflower shrot have been presented in the article. The influence of various dosages of high-protein flour from sunflower shrot on the change in consumer and technological properties of chocolate masses has been explored. The technological properties of the simulated chocolate masses promote the creation of a technology of the mass production as the preparation of liquid semi-finished products and in the process of forming finished products. The expediency of using this additive in the confectionery production, in particular chocolate, has been demonstrated. The composition of the chocolate mass that does not reduce the taste characteristics of the finished chocolate product is presented. A new technical result of the resistance of chocolate to fat bloom has been achieved.
Cutlet formulas with spelt and thistle seeds flour balanced by amino acid composition
Authors: Patrakova I S , Seregin S A , Gurinovich G V , Myshalova O M , Patshina M V , Sannikov P V
Published: February 2021

Expansion of the range of chopped semi-finished products of high nutritional value is possible with a combination of meat and vegetable raw materials. The greatest interest is studying of possibility of use of alternative kinds of local plant raw materials, as a source of indispensable amino acids and fibre in technology of meat products of the higher biological value. Flour from spelt and thistle seeds is such an alternative plant raw material. The aim of the research was to develop cutlet formulas balanced in biological value using spelt flour and thistle seed flour. Based on the definition of water absorption and water retention capacity, the level of hydration of plant components was established, which amounted to 1:3. According to the results of organoleptic evaluation, the limit level of hydration of hydrated spelt and thistle seed flour in the formulas of meatballs was determined, which amounted to 15% and 5%, respectively. The method of computer design using the utility coefficient of amino acid composition as a target function determined the optimal amount of added plant component, which provides the highest biological value. For optimized formulas it was established to increase the utilitarian coefficient of amino acid composition to 0.82 and 0.83, to decrease the amount of unutilized amino acids to 63.00 mg and 59.79 mg, respectively, when using 15% spelt flour and 3% thistle seed flour. This indicates the high biological value of optimized cutlet formulas.
Nutritional value of persimmon, banana, lemon and longan cultivated in Northern Vietnam
Authors: Thinh B B , Trong L V , Lam L T , Hien V T T
Published: February 2021

An analysis of nutritional composition of some common fruits (persimmon, banana, lemon, longan) grown in Northern Vietnam was conducted. These fruits, at their ripening stage, showed distinctive flavors and colors and contain a high content of nutrients. They owned relatively high content of vitamins, protein, lipid and reducing sugar, and also contained essential amino acids mostly including glutamic acid, aspartic acid, leucine. Additionally, the mineral content in the fruits also achieved a high level, mainly phosphorus, nitrogen, potassium and magnesium. These obtained findings show that the fruits (persimmon, banana, lemon, longan) are a major source of nutrients as well as essential minerals for humans. The research results are also served as a scientific basis for collecting, processing, preserving and consuming these fruits in Vietnam.
Unconventional recipe component in the production of pasta
Authors: Osipova G A , Samofalova L A , Berezina N A , Seregina T V , Safronova O V , Chalykh M V
Published: February 2021

The use of secondary raw materials as new recipe ingredients in the production of food products is currently quite relevant. Soybean okara, which is a by-product of soy milk production, may be promising in this case. Special attention is paid to its technological properties and rich chemical formula which includes at least 5.5% of complete protein characterized by the content of all essential amino acids, dietary fiber, unsaturated fatty acids, macro-, microelements (potassium, calcium, magnesium, iron, iodine, etc.), vitamins (β-carotene, E, group B, choline, biotin, folic acid), isoflavones, which suggests the positive effect of the use of okara in food production in order to increase their consumer properties and nutritional value. It is important that soybean okara practically does not have any flavor, which allows to use it in the production of a great variety of food products and culinary. The article proves the possibility to use soybean okara in the production of pasta, gives some optimal drying parameters of soybean okara for its further use, investigates the influence of soybean okara on the properties of raw gluten of wheat flour, rheological characteristics of pasta dough and the quality, first of all, on cooking properties of pasta, determines its rational proportion taking into account the quality of the main raw material (11.5% to flour weight). The content of protein and fiber in the composition of soybean okara and finished pasta is determined.
The effectiveness of using mineral fertilizers with microelements «Nanosilicon», «Stimulin», and «Alfastim» drugs in the reproduction of sea buckthorn
Authors: Kosachev I A , Vorobyeva A V , Usvyat N D
Published: February 2021

The article is devoted to the study of the influence of new promising drugs «Nanosilicon», «Stimulin» and «Alfastim» on the rhizogenesis of green cuttings of sea buckthorn when growing planting material. The objects of the study were three promising varieties of sea buckthorn selected by the Research Institute of Horticulture of Siberia: Augustina, Essel and Etna. The purpose of the research is to search for drugs and optimal concentrations that stimulate root formation to increase the yield of high-quality planting material of valuable sea buckthorn varieties. As a result of the conducted research, the positive effect of the drug mineral fertilizer with microelements «Nanosilicon» on the rhizogenesis of green cuttings and the volume of the root system of sea buckthorn seedlings was established.
The bean flour effect on the rheological properties of the dough from a wheat flour based composite mixture
Authors: Maradudin M S , Simakova I V , Kazydub N G
Published: February 2021

Department of Food Technology, at Saratov State Vavilov Agrarian University, studied and compared the main parameters of the rheological state of the dough from whole grain wheat flour and straight white wheat flour, dough from white beans and red beans. Dough parameters from flour composite mixtures based on beans were also studied and compared with each other. It was found that the water absorption ability of flour highly correlates with dough stability time, with a force moment characterizing the minimum consistency of the dough during the starch retrograde phase and with a force moment characterizing the maximum consistency of the dough during the end of the starch retrograde phase, as well as with the total energy consumed during dough mixing. To a lesser extent, the water absorption ability of flour correlates with the time of dough development, the force moment during the liquefaction phase, and the force moment characterizing the stability of the dough during the gelatinization phase. When comparing the main rheological parameters of the dough from the studied types of flour, it was found that both the degree of grinding and the morphological characteristics of the beans used as a donor or basis for composite mixtures influence the correlation between rheological parameters. The water absorption ability correlates to a greater extent with the main rheological indices of the dough of composite mixtures based on straight white wheat flour rather than composite mixtures based on whole grain flour.
Chemical composition and physicochemical properties of extruded buckwheat
Authors: Garkina P K , Kurochkin A A , Frolov D I , Shaburova G V
Published: February 2021

The article analyzes the chemical composition of extruded buckwheat. The fatty acid composition of extruded buckwheat oil is obtained. The water-binding and fat-binding ability of extruded buckwheat was studied. The chemical composition of extruded buckwheat is compared with other components. The directions of using extruded buckwheat in brewing for the intensification of biotechnological processes are considered. Due to its high fiber content and low glycemic index, the use of extruded buckwheat can be recommended when creating a new line of fortified bakery products for diabetic purposes.
Influence of buckwheat by-products on the antioxidant activity of functional desserts
Authors: Matseychik I V , Korpacheva S M , Lomovsky I O , Serasutdinova K R
Published: February 2021

Using of buckwheat by-products (hull fine powder and melanin obtained from the hull) in formulations of desserts (by the examples of chocolate cream and honeysuckle mousse) can improve their sensory and physico-chemical characteristics, including antioxidant activity (AOA). The chemical composition of buckwheat hull fine powder was studied, and sensory evaluation of the powder and melanin was carried out. The values of AOA allowed one to determine the amounts of the powder and melanin in desserts as 1.5 and 0.037 g per serving accordingly. Sensory evaluation of dessert samples showed high-point values. There were also determined physico-chemical characteristics of dessert samples. Besides increasing of AOA, the buckwheat hull fine powder increases dietary fibers content in desserts. All dessert samples with addition of melanin satisfy more than 15% of the daily need in antioxidants, so the developed desserts can be considered as functional products.
Studies of the purification process of biogas used for grain micronization
Authors: Startseva S V , Ostrikov A N , Bogomolov I S , Zheltoukhova E YU
Published: February 2021

The operation parameters of the GIK-8 burner were checked when using variants of model gas with different volume ratios of methane and carbon dioxide as fuel. The operability of the GIK-8 infrared radiation burner on purified biogas with a CO2 content of maximum 10-34 % vol. was experimentally established. The dependences of the burner power loss, the combustion rate on the CO2 content in biogas at various values of the total gas mixture flow rate, the performance of one burner on the combustion rate for different combinations of the flow rates of the components of the gas-air mixture are determined. It was revealed that the temperature of the heating surface of the GIK-8 burner in gas mixtures with a CO2 content of 18-34 % vol. makes up 830-840 ° C. The possibility of firing a cold burner GIK-8 at 33 % vol. CO2 content in purified biogas is defined. Based on the studies, a rational method for biogas purifying has been determined, including chemical desulphurization, pressure washing with water and condensation drying of biogas supplied to infrared burners for stable operation of the micronizer of the following composition: methane (CH4)–85 % vol., carbon dioxide CO2 - 11 % vol., water vapor - 9 mg/m3, hydrogen sulfide H2S - 20 mg/m3 with minimal energy costs for its preparation. An improved burner design for a micronizer adapted to biogas operation has been developed. The temperature of the heating surface of the GIK-8 burner in gas mixtures with a CO2 content of 18-34 % is 830-840 ° C.
Improving the technology of post-harvest processing and storage of grain raw materials at the enterprises of the grain processing industry
Authors: Yegorova S V , Slavyanskiy A A , Postnikova T A , Pereboev A V , Mazanova G V , Murzakov M G
Published: February 2021

In the modern market of agricultural products, there is an acute problem of saturation of the grain sector of quality raw materials that are used in different spheres of production. There is annual expanding of the range of exports and increase in the volume, as well as growing consumption in the domestic market. To perform these tasks we need an efficient post-harvest processing and storage of grain raw materials. JSC “Novospassky Elevator” is a dynamically developing enterprise actively introducing modern technologies of processing and aeration of the grain mass to maintain and improve quality. Ventilation systems are used when drying grains in dryers. Aeration has a significant efficacy, however, drawbacks are a significant outlay of time, the changing weather conditions can be critical. The most perspective processing method is the intermittent ventilation, which has proved itself in the industry of bakery products and which can be performed in storage, being equipped with installations for active aeration, silos and bunkers. The authors developed a nomogram for selection of a rational mode of intermittent ventilation and its duration when the seed moisture content from 16% to 20% inclusively. The essence of intermittent aeration of grains is the use of short periods of blowing, which alternate with longer periods of binning the grains. During binning, the moisture from the inner layers flows into the outer, and, if subsequent ventilation is removed. In addition to the technology of intermittent aeration, the grains can also be stored using the method of storage in controlled atmosphere. Rational use of energy resources significantly reduces the cost of the enterprise.
Theoretical aspects of the use of alfalfa in the production of flour confectionery products of high biological value for tourist routes
Authors: Agaeva N Y , Alekseeva T V , Krivenko E I , Nesterenko I P , Taltynova E S , Stolyarov A E
Published: February 2021

Improving public health is considered one of the key tasks of the state policy of the country. An important factor affecting the state of public health is a balanced diet, through which it is possible to carry out targeted alimentary shunting of the human body. Considering the current state of people’s diets in Russia, we can conclude that in the daily menu there is a decrease in the use of products with high biological value and, at the same time, an increase in the consumption of products with an increased amount of carbohydrate component. This trend leads to a deficiency in the use of high-grade proteins, polyunsaturated fatty acids, vitamins and minerals. For various population groups, the concept of a balanced diet is specific. Considering the diet for tourists on tourist routes of varying complexity, the issue of expanding the range of food products that can satisfy the physical needs of tourists when passing the appropriate routes for the necessary substances and energy is particularly relevant. The most preferred group of products is flour confectionery products due to the fact that they have a high calorie content, contribute to energy enrichment, are convenient to use and have good storage capacity. This group of products is most common on the market due to its availability and tradition. Especially, among the wide range of confectionery, shortbread cookies can be distinguished.