bluuebunny/crossref_metadata_2025_split huggingface dataset:
Method of statistical tests in solving problems of food production management
Authors: Buzina T S , Yu Belyakova A , Ivanyo Ya M 
Published: October 2021

Abstract
The article discusses some of the problems of forecasting and planning the production of agricultural products and harvesting of wild plants in conditions of uncertainty. Variants of their solution using the method of statistical tests are proposed. The factorial regression equations for modeling the yield of grain crops depending on precipitation in the initial growing season and time are given. Two dependencies are considered for different agrolandscape areas. In one case, the relationship between the yield of grain crops and precipitation and time was determined, and in the second, a dependence on precipitation was found. The direct and inverse problems are considered. The conditions for obtaining high and low yields were determined. A linear model for optimizing the placement of grain crops is proposed using the Monte Carlo method for assessing random indicators. The extreme problem is applied to a municipal district with developed agriculture. The results of modeling are presented, which make it possible to estimate the volume of production of grain crops for different levels of productivity, which correspond to the reference probabilities. A multi-criteria parametric model of the functioning of clusters for obtaining food wild-growing products with probabilistic estimates in constraints and a parameter included in the objective function is described and implemented. The yield of wild plants was used as a parameter, on which the sales price depends.
Selection of methods for sterilization of C. purpurea sclerotia for isolation of rye biosecurity agents
Authors: Neshumaeva N A , Timina M A 
Published: October 2021

Abstract
Winter rye is a traditionally cultivated grain crop that is susceptible to ergot, a serious disease of the Poaceae family, caused by C. purpurea. Along with agrotechnical, organizational, and economic methods, biological control of ergot in grain crops is one of the ways to combat this disease. To isolate C. purpurea hyperparasites in a pure culture, the optimal sterilization options were selected, which were to exclude the infection of ergot sclerotia with saprophytic microflora. Before sterilization, C. purpurea were additionally washed in the running water with the addition of SAS for an hour. 70% and 96% ethanol, bleaching agent “Belizna” (Whiteness) were used as sterilizing agents. The exposure time varied from 1 to 12 minutes. Sclerotia were cultivated on potato sucrose agar at 24 ° C. The options for sterilizing sclerotia for 10 and 12 minutes in the “Belizna” bleaching agent were recognized as the best.
Kanamycin application features for the selective screening of genetically modified Populus × berolinensis
Authors: Pavlichenko V V , Protopopova M V 
Published: October 2021

Abstract
The study describes the features of the kanamycin application for the effective selection of transgenic poplar expressing nptII gene. It has been shown that kanamycin concentration of 50 mg L−1 in the nutrient medium is the most suitable concentration for the effective selection of transgenic Berlin poplar plants for both regeneration and rooting stages. At the same time, 50 mg L−1 of kanamycin in the nutrient medium may result in the loss of the less resistant transgenic plants, so lower concentrations may be also applied. Kanamycin concentrations of 25 and 35 mg L−1 can give a false positive signal of transgenesis. Transgenic poplars expressing nptII gene can be effectively regenerated on nutrient media with kanamycin at concentrations up to 100 mg L−1.
Spillway hydraulic performance assessments of the Belogorsk reservoir
Authors: Shubaeva N V , Kipkeeva P A , Volosukhin Y V , Chomaeva M N , Uzdenova H I 
Published: October 2021

Abstract
The article presents the calculation of the hydraulic performance of the spillway structure of the Belogorsk reservoir, one of the largest freshwater bodies on the Crimean Peninsula. Due to its geographical location and natural features, Crimea has always been and remains one of the poorest regions of Russia with water resources and water delivery to the consumers is a priority. Hydraulic performance assessment of the spillway structure is carried out for two design cases: 1) with a variable upstream water level rate and a fully open gate with a = 1.00 m; 2) with a constant upstream water level (UWL) equals highest water level (HWL) and a variable value of the shutter opening. Based on the results of determining the hydraulic performance of the water intake structure, the maximum discharge flow rate (at the mark UWL equals HWL) was obtained, which was Q = 6.06 m3 / s, which is 1% higher than the design data of the throughput of the structure (Q = 6.00 m3 / s) and the total throughput of all spillway structures is Qtotal = 79.32 m3 / s, which differs from the design data by less than 1% and indicates the accuracy and reliability of the obtained data.
Innovative method of strip-till 3-D spraying in chemical treatment of crops to implement resource-saving approaches in strip-till technology
Authors: Meznikova M V , Borisenko I B , Chamurliev O G , Ulybina E I , Romenskaya O N 
Published: October 2021

AbstractA new approach to the technology of chemical treatment of crops based on the technological process of volumetric 3-D spraying, which differs favorably from the classical technology of continuous spraying, is developed. The development makes it possible to competently and efficiently apply working chemical solutions depending on the phase of growth and development of the cultivated plant on the object of treatment. When designing the technological process of volumetric 3-D spraying, the architectural features of the cultural plant were taken into account. The applied approach to the application of the working solution to the plant allows combining the methods of solid and strip spraying. For this purpose, a technical solution is offered to retrofit a serial boom sprayer with special bodies for separation of liquid flows and directing the liquid to the object of treatment. In this case a new, more stable flow in width and height is formed. The paper considers the results of studies of the technological process of chemical treatment with the use of strip technology in terms of quality indicators. The technical solution makes it possible to perform fast equipment adjustment in the field without using special tools. At the same time, it is possible to switch from solid spraying to strip spraying and vice versa. When switching to strip spraying, the spray solution is sprayed strictly along the strips of the crop and covers the entire surface of the stem and leaves. This allows you to reduce the cost of applying liquid chemicals and accurately redistribute the spray solution. As a result of the technology the goals of reducing costs, improving the quality of chemical treatment and increasing the environmental friendliness of the chemicalization process are achieved.
Physical-chemical method for desalting organic waste for agricultural cycles
Authors: Trifonov S V , Murygin A V , Tikhomirov A A 
Published: October 2021

Abstract
The problem of developing a technology for the removal or drastic reduction of NaCl from organic waste, including human exometabolites and plant waste and intended for disposal in closed agricultural cycles, is very relevant, especially for Northern regions with risky agriculture. Without its solution, it becomes almost impossible to create a long-term functioning ecosystem due to the danger of accumulation of NaCl in irrigation solutions and soil with subsequent poisoning of plants. It is obvious that the development of the technology for extracting NaCl is most rational to perform in combination with the technology for processing human exometabolites, since they are the main source of NaCl.
Analysis of water softening methods and an algorithm of choosing the best method for using in production cycle
Authors: Abramova A A , Gainanova A I , Belyaeva D V , Dyagelev M Yu , Grakhova E V 
Published: October 2021

Abstract
This article presents advantages and disadvantages of the most widespread water softening methods, such as reagent method, cation exchange softening, thermal method, reverse osmosis and electromagnetic softening. According to the application features and characteristics of each method, there was developed an algorithm that helps to choose water softening method in case of given specified parameters (turbidity, color, hardness) and the desired level of water hardness after treatment.
Synthesis of modified amino-aldehyde oligo (poly) mers and study of their thermal stability
Authors: Ramazanov Bakhrom , Juraeva Laylo , Sharipova Nasiba 
Published: October 2021

Abstract
In the article are discussed the relevance of obtaining amino aldehyde oligomers and the study of their basic physicochemical properties and determines that the synthesis conditions and the ratio of the starting components play an important role on the properties and structure of the synthesized amino aldehyde oligomers. Using the Differential thermal analysis (DTA) method, it was proved that the modification of the urea-formaldehyde oligomer with acrylic acid helps to increase the thermal oxidative degradation of the resulting products. In this case, the modifier - acrylic acid strongly chemically binds with amino aldehyde oligomers, which leads to an increase in the heat resistance of the samples.
Hydrothermal synthesis of zeolite HSZ-30 based on kaolin
Authors: Temirov F N , Khamroyev J Kh , Fayzullayev N I , Haydarov G Sh , Jalilov M Kh 
Published: October 2021

Abstract
We were the first to study natural kaolin and, on its basis, obtained a zeolite of the HSZ-30 type. As samples of selected Pakhtachinsky kaolin containing of 68.8% mordenite (Ca2,2Na2,1K2,9Al9,3Si42,2O98·36H2O) and 31.2% quartz (SiO2). The sample was thoroughly washed with distilled water and dried at 120 ° C for 6 days. Hydrothermal synthesis was carried out in Mori type autoclaves with a volume of 20 cm3. Optimal conditions for obtaining zeolite of the HSZ-30 type: temperature 120 ° C, concentration of thermal solution 2 N, processing time 6 days. IR spectroscopic studies were carried out on a Nicolete IS-10 IR spectrometer (Thermo Scientific, USA) in the frequency range 400…5000 cm−1. The phase and chemical composition of the initial and final products was determined by X-ray (2D PHASER «Bruker» (CuKa – radiation, 2Θ = 20-80°) and elemental (Launch of Trition XL ditution refrigerator – Oxford instrument) methods of analysis. The article presents the results of a study of the influence of the conditions of hydrothermal synthesis (H2O/Si ratios in precursor mixtures and synthesis of temperatures) HSZ-30 for crystal size and morphology.
The study of the phenotype of Viburnum vulgaris growing in the Krasnoyarsk Territory
Authors: Evtukhova O M , Ivanova G V , Kolman O Ya , Glotova M V , Nikulina E O 
Published: October 2021

Abstract
The article presents the results of studies of individual and ecological-geographical variability of morphological characters and nutrient composition of the Viburnum vulgaris fruits growing on the Krasnoyarsk Territory. As a result of the assessment of the individual variability of traits of Viburnum vulgaris fruits from different natural populations, it was revealed that in all populations the morphological traits are characterized by average individual variability (Cav = 13.9-18.35%); for the nutrient composition - high (Cav = 27.42-36.63%). Three main groups of traits are distinguished: with a low, medium and very high level of variability in each populations of the species, depending on the level of variability There is a decrease in the variability of morphological characters and an increase in nutrients from south to north. A direct relationship was revealed between the variability of morphological traits and the nutrient composition: an increase in the variability of the former is associated with a decrease in the variability of the latter.
Method of estimation of dynamic properties of transmissions of forestry units
Authors: Orlovsky S N , Kokieva G E , Voinash S A , Sokolova V A , Alekseeva S V , Taraban M V , Andronov A V 
Published: October 2021

Abstract
When performing energy-intensive work in forestry related to the processing of stumpy soil, it is necessary to substantiate new requirements for forestry tractors in terms of weight, energy and dynamic parameters. Their change will cause a change in the disturbing forces acting on the transmission shafts of the unit, which can excite torsional vibrations in its dynamic system. When the natural frequencies of the oscillations coincide with the disturbing ones, unwanted resonant oscillations may occur. The most common models for studying dynamic properties are models in the form of complex multi-mass torsional dynamical systems. To calculate the vibrations of torsional systems, an algorithm and a program for solving a system of differential equations were drawn up. Their solution made it possible to calculate the amplitude-frequency characteristics (AFC) of the dynamic systems of tractor units. The allocation of zones of forced oscillations in transmissions from the working bodies on the frequency response, as well as the coordination of the parameters of the working bodies with the parameters of the transmissions is a necessary condition for ensuring the effective operation of forestry units. When changing the moments of inertia of rotating masses, it is necessary to analyze the vibrations that occur in branched transmissions with active working bodies with significant moments of inertia. To determine their optimal parameters, the presented mathematical models can be used.
Development of the model of automatic control of energy intensity of technological processes and its application
Authors: Saidova Mukhabbat , Urinov Nodir , Schwarzburg Leonid 
Published: October 2021

Abstract
The article covers the model for automatic compensation of reactive component of consumed current of asynchronous motors operating at powers lower than the nominal values. Automated control system for individual compensation of reactive component of power consumption have been designed, which is connected directly to asynchronous electric motors of machine tools.
Measures to improve the performance of concrete of reinforced concrete supports of technological overpasses
Authors: Nikolenko S D , Sazonova S A , Akamsina N V , Rylev S S , Rogov N Yu 
Published: October 2021

Abstract
The paper presents the process of assessing the technical condition of reinforced concrete supports of existing technological overpasses, gives their characteristics, shows the defects found in the process of assessing the technical condition. The article describes the monitoring of concrete strength by the non-destructive method of elastic rebound using the Digi Shmidt 2000 device and the determination of the thickness of the concrete cover and the location of reinforcement by the magnetic method using the Profometer-5S device. We determined the layout of the working reinforcement in the reinforced concrete supports of the overpasses’ sections. We present the results of verification calculations of the structures of the technological overpasses, taking into account the revealed defects and damages, the strength of materials and the specified actual loads. We give recommendations for improving the performance of the concrete of the reinforced concrete supports of the overpasses.
Technological effectiveness of formation of planting furrow by working body of passive type of orchard planting machine
Authors: Rogovskii I L , Titova L L , Gumenyuk Yu O , Nadtochiy O V 
Published: October 2021

Abstract
The article presents the results of experimental studies of technological effectiveness of formation of planting furrow by working body of passive type of orchard planting machine. The authors adhered to working hypothesis that to reduce energy consumption and increase the reliability of orchard planting machine in various operating conditions, possibly due to passive type of working body, which provides undercutting the soil layer and raises it to formation of planting furrow, and after placing the seedling in it, it encloses it as before area without additional significant movement or rotation. The article presents the results of study of number of roots hooks of two-year-old apple seedlings when trying to place their root system in interval between the opener model extensions. The authors presented the models of schemes of interaction between plant stems and blade of main blade and optimized the parameters of working surface of barrel blade. The authors established the dependence of additional averaged soil resistance coefficient on planting depth. The article investigates the dependence of resistance force of working body of orchard planting machine on planting depth and soil type. The authors presented the results of technological effectiveness of prototype of working body of orchard planting machine during experimental research and production tests.
Experimental studies of the thermal characteristics of electro-thermal storage
Authors: Khimenko A V , Tikhomirov D A , Kuzmichev A V 
Published: October 2021

Abstract
Based on the results of the performed experimental studies of thermal operation conditions and dynamic characteristics of electro-thermal storages (ETS), data on the behavior of the following thermal parameters of heat storage units made of magnesite and chamotte has been obtained: temperature change of heated air in channels of heat storage units and that in the outlet from ETS, temperature change in the bulk of thermal insulation and that on the surface of housing, for one cycle of heat charging and heat emission of ETS. Information obtained in the course of experiments has been analyzed. The suggestion has been made to compensate relatively low heating rate of chamotte storage units by application of metal plates installed between adjacent storage units which made it possible to improve the dynamics of ETS heat charging. Growth of wall temperature of air channels of chamotte heat storage units, in the end of ETS charging cycle, amounted to, approx. 10 % (50 °C) compared to the design option without metal plates. It has to be noted that, in the heat emission mode of ETS, cooling rate of chamotte heat storage units is substantially higher than that of magnesite units.
Advanced process control of boiler installation
Authors: Kadyrov R R , Kondratyuk A G 
Published: October 2021

Abstract
In production processes, it is important find solutions to improve economic performance. This is especially topical for energy facilities, such as boiler plants. These problems are complex in nature and require solutions in the field of technology, apparatus designs, modes and algorithms of equipment operation. If it is required to improve the performance of an operating object without significant changes in the design of the apparatus, then often the solutions lie in the plane of the work algorithms. Thus, modernization of the object’s automatic control system using a programmable logic controller and a control program will optimize processes without significant investments. In this regard, one of the rational and effective solutions for modernizing the automatic control system can be the use of predictive models. Predictive model control has excellent adaptability, although it uses a relatively simple control scheme. Such a system is a superstructure over an existing automatic control system. This paper proposes a method for implementing control with predictive models by using a virtual analyzer interfaced with a controller. This makes it possible to take into account and correct many disturbances in the control system of the boiler plant, which favourably affects the stability of the process and economic indicators.
Psychosocial Determinants of COVID-19 Vaccination Intention Among White, Black, and Hispanic Adults in the US
Authors: Bleakley Amy , Hennessy Michael , Maloney Erin , Young Dannagal G , Crowley John , Silk Kami , Langbaum Jessica B 
Published: October 2021

Abstract

Background
COVID-19 vaccine uptake is an urgent public health priority.

Purpose
To identify psychosocial determinants (attitudes, normative pressure, and perceived behavioral control) of COVID-19 vaccination intentions for U.S. White, Black, and Hispanic adults, and how COVID-19 misperceptions, beliefs about the value of science, and perceived media bias relate to these determinants.

Methods
Longitudinal online survey using two national samples (18–49 years old/50 years and older), each stratified by racial/ethnic group (n = 3,190). Data were collected in October/November 2020 and were weighted by race group to be representative.

Results
Path analyses showed that more positive attitudes about getting vaccinated predict intention across age and racial/ethnic groups, but normative pressure is relevant among older adults only. Belief in the value of science was positively associated with most determinants across all groups, however the association of COVID-19 misperceptions and perceived media bias with the determinants varied by age group.

Conclusions
Messages that emphasize attitudes toward vaccination can be targeted to all age and racial/ethnic groups, and positive attitudes are universally related to a belief in the value of science. The varying role of normative pressure poses messages design challenges to increase vaccination acceptance.
Histological Atlas of the Internal Anatomy of Female Varroa destructor (Mesostigmata: Varroidae) Mites in Relation to Feeding and Reproduction
Authors: Sonenshine Daniel E , Posada-Florez Francisco , Laudier Damien , Gulbronson Connor J , Ramsey Samuel , Cook Steven C 
Published: October 2021

Abstract
Histochemical staining of histological sections of Varroa destructor (Anderson and Trueman, 2000) mites reveal the internal body plan and are used to contrast the internal organs associated with feeding and reproduction of starved versus recently fed female mites. The gnathosoma is comprised of a powerful sucking pharynx, which employs 11 alternating dilator and constrictor muscles, the chelicerae, the salivary ducts, and the salivarium. Coronally, the esophagus is visible through the synganglion between its supraesophageal and subesophageal regions and connects posteriorly to the midgut. The midgut is devoid of food particles in starved mites, but in fed mites, the midgut epithelial cells are filled with innumerable globular spheroids replete with lipoproteins, including polyunsaturated lipids, whereas the lumen is filled with saturated lipids or other unidentified nutrients. In the opisthosomal body region of the fed female, the bilobed lyrate organ lies adjacent to the midgut on one side and the ovary on the opposite side, with very close cell to cell linkages that appear to form a syncytium. The fed female ovary contains an enormously enlarged ovum, and numerous elongated nurse cells extending from the lyrate organ. Dyes staining selectively for lipoproteins suggests rapid incorporation of neutral and polyunsaturated lipids and lipoproteins. Also evident near the ovary in fed females is the spermatheca filled with elongated, fully capacitated spermatozoa. The histological and histochemical findings reported in this study provide a fresh insight into the body structure, nutrition, and reproductive activity of the female of this harmful honey bee parasite and disease vector.