bluuebunny/crossref_metadata_2025_split huggingface dataset:
Structural, electronic, mechanical, thermal, and optical properties of UIr3 under pressure: A comprehensive DFT study
Authors: Dujana Wasif Abu , Podder Arpon , Das Ovijit , Solayman Md. , Nasir M. T. , Rashid M. A. , Saiduzzaman Md , Hadi M. A. 
Published: October 2021

First-principles density functional theory calculations were performed to assess the pressure effect on structural, electronic, mechanical, thermal, and optical properties of cubic intermetallic UIr3. The calculated lattice parameter deviates from the experimental value by 0.40%, indicating the reliability of the present study. The obtained lattice constant decreases at a constant rate with pressure over the entire pressure range. The band structure and Fermi surface disclose the metallic nature of UIr3. The external pressure suppresses the overlapping between the valence and conduction bands and reduces the total density of state at the Fermi level. The pseudogap moves to the left from the Fermi level with increasing pressure, which indicates a decrease in the structural stability of UIr3. Peaks in the valence band move toward deeper energy positions when the external pressure is increased from 0 to 25 GPa, indicating the increase in the covalency of UIr3. Contour maps of charge density and Mulliken population analysis imply that UIr3 has also partial ionic and covalent nature in chemical bonding. In the considered pressure range, UIr3 maintains its mechanical and dynamical stability as well as ductility and machinability. The elastic anisotropic level of UIr3 increases slightly with fluctuations above the pressure of 5 GPa. Shape change in UIr3 will be more difficult due to the increase in shear modulus and microhardness under the external pressure. Thermal properties of UIr3 are favorable for being a promising thermal barrier coating material, and optical reflectivity makes it a potential candidate material for coating to diminish solar heating.
Earth history events shaped the evolution of uneven biodiversity across tropical moist forests
Authors: Hagen Oskar , Skeels Alexander , Onstein Renske E. , Jetz Walter , Pellissier Loïc 
Published: October 2021

Significance
Tropical moist forests harbor much of the world’s biodiversity, but this diversity is not evenly distributed globally, with tropical moist forests in the Neotropics and Indomalaya generally exhibiting much greater diversity than in the Afrotropics. Here, we assess the ubiquity of this “pantropical diversity disparity” (PDD) using the present-day distributions of over 150,000 species of plants and animals, and we compare these distributions with a spatial model of diversification combined with reconstructions of plate tectonics, temperature, and aridity. Our study demonstrates that differences in paleoenvironmental dynamics between continents, including mountain building, aridification, and global temperature fluxes, can explain the PDD by shaping spatial and temporal patterns of species origination and extinction, providing a close match to observed distributions of plants and animals.
Direct visualization of bottlebrush polymer conformations in the solid state
Authors: Chan Jonathan M. , Kordon Avram C. , Zhang Ruimeng , Wang Muzhou 
Published: October 2021

SignificanceThis work provides a clear and convincing picture of a polymer chain surrounded by other polymers in the solid state over 100 y after the molecular definition of polymers was first proposed. We achieve this feat using super-resolution optical microscopy, which provides resolution sufficient for the nanoscale detail and provides contrast of individual chains from the surrounding background through fluorescent labeling. We measure the conformation of these polymers directly from their images and show that their rigidity is significantly different from that in solution. Further analysis investigates the dependence of conformation on various parameters, such as polymer branching and the features of the surrounding polymers.
Mixing properties of Al2O3(0001)-supported M
2O3 and MM′O3 monolayers (M, M′ = Ti, V, Cr, Fe)
Authors: Noguera C , Goniakowski J 
Published: October 2021

Abstract
Considering the importance of sub-monolayer transition metal oxides supported on another oxide in many industrial processes, with the help of a DFT + U approach, we provide information on the structural and electronic properties of pure M
2O3 and mixed MM′O3 oxide monolayers (M, M′ = Ti, V, Cr, Fe) supported on an α-Al2O3(0001) support. With their structure in the prolongation of the alumina corundum lattice, the monolayers have non-equivalent surface and interface cations, which leads to two different cation configurations in the mixed oxides. In all cases, the interfacial charge transfer is weak, but strong cation–cation electron redistributions may take place as in TiVO3, TiFeO3, VFeO3, and TiCrO3 in which actual redox processes lead to cation oxidation states different from the expected +3 value. We show that the tendency to mixing relies on the interplay between two very different driving forces. Cation–cation redox reactions, in most cases, strongly stabilise mixed configurations, but preference for a given cation position in the monolayer, because of surface energy reasons, may strengthen, weaken or even block the mixing tendency. By comparison with results obtained in bulk ilmenite, in free-standing monolayers and in MLs deposited on transition metal substrates, we evidence the flexibility of their electronic structure as a function of size, dimensionality and nature of support, as a lever to tune their properties for specific applications.
Persistence of periodic and homoclinic orbits, first integrals and commutative vector fields in dynamical systems
Authors: Motonaga Shoya , Yagasaki Kazuyuki 
Published: October 2021

Abstract
We study persistence of periodic and homoclinic orbits, first integrals and commutative vector fields in dynamical systems depending on a small parameter ɛ > 0 and give several necessary conditions for their persistence. Here we treat homoclinic orbits not only to equilibria but also to periodic orbits. We also discuss some relationships of these results with the standard subharmonic and homoclinic Melnikov methods for time-periodic perturbations of single-degree-of-freedom Hamiltonian systems, and with another version of the homoclinic Melnikov method for autonomous perturbations of multi-degree-of-freedom Hamiltonian systems. In particular, we show that a first integral which converges to the Hamiltonian or another first integral as the perturbation tends to zero does not exist near the unperturbed periodic or homoclinic orbits in the perturbed systems if the subharmonic or homoclinic Melnikov functions are not identically zero on connected open sets. We illustrate our theory for four examples: the periodically forced Duffing oscillator, two identical pendula coupled with a harmonic oscillator, a periodically forced rigid body and a three-mode truncation of a buckled beam.
Quantification of the effect of uncertainty on impurity migration in PISCES-A simulated with GITR
Authors: Younkin T.R. , Sargsyan K. , Casey T. , Najm H.N. , Canik J.M. , Green D.L. , Doerner R.P. , Nishijima D. , Baldwin M. , Drobny J. , Curreli D. , Wirth B.D. 
Published: October 2021

Abstract
A Bayesian inference strategy has been used to estimate uncertain inputs to global impurity transport code (GITR) modeling predictions of tungsten erosion and migration in the linear plasma device, PISCES-A. This allows quantification of GITR output uncertainty based on the uncertainties in measured PISCES-A plasma electron density and temperature profiles (n
e, T
e) used as inputs to GITR. The technique has been applied for comparison to dedicated experiments performed for high (4 × 1022 m−2 s−1) and low (5 × 1021 m−2 s−1) flux 250 eV He–plasma exposed tungsten (W) targets designed to assess the net and gross erosion of tungsten, and corresponding W impurity transport. The W target design and orientation, impurity collector, and diagnostics, have been designed to eliminate complexities associated with tokamak divertor plasma exposures (inclined target, mixed plasma species, re-erosion, etc) to benchmark results against the trace impurity transport model simulated by GITR. The simulated results of the erosion, migration, and re-deposition of W during the experiment from the GITR code coupled to materials response models are presented. Specifically, the modeled and experimental W I emission spectroscopy data for a 429.4 nm line and net erosion through the target and collector mass difference measurements are compared. The methodology provides predictions of observable quantities of interest with quantified uncertainty, allowing estimation of moments, together with the sensitivities to plasma temperature and density.
Productive qualities of nanny-goats of the Orenburg downy breed depending on various types of diets
Authors: Ivanov P A , Ryazanov A B , Komarova N K , Zavyalov O A 
Published: October 2021

Abstract
The article shows the positive effect of different types of diets on the milk and downy productivity of Orenburg nanny-goats. In order to increase production and improve its quality, it is proved that it is necessary to use hay concentrate (43.6% coarse, 33.4% concentrates, 23.0% juicy) and hay (53.6% coarse, 23.4% concentrates and 23.0% juicy) type. This type of feeding allows you to increase the fleece of down, respectively by 6.63 and 12.80%, while reducing the cost of feed (feed units) by 1 kg of gain - 7.37%, by 1 kg of down - by 6.61 and 18.43%, the cost of 1 kg of down, respectively - by 6.53 and 16.55%.
Application of preferential leasing at enterprises of the agro-industrial complex
Authors: Chaika N K , Mazhayskiy Yu A , Surkova E V 
Published: October 2021

Abstract
The article deals with leasing operations for small enterprises of the agro-industrial complex. The following basic conditions of leasing transactions are considered: requirements for the lessee, minimum interest rate, minimum / maximum lease term, type of the financed property in the current market situation, industries and regions that are allowed for cooperation in the current market situation. The risk factors of the lessor and the lessee are analyzed. It is noted that when considering the segment of small and medium-sized enterprises of the agro-industrial complex, the main factor that determines the risk of the transaction is the uncertainty of the future profit of the lessee. A scheme for determining the risk of a leasing transaction is proposed. The risks of the lessee’s and lessor’s segments are considered. The conclusion is made about the high riskiness of leasing transactions for enterprises of the agro-industrial complex.
Kinetics of sea buckthorn juice concentration by freezing
Authors: Ovsyannikov V Yu , Klyuchnikov A I , Lobacheva N N , Toroptsev V V , Klyuchnikova D V 
Published: October 2021

Abstract
Concentration of sea buckthorn juice by freezing on a batch crystallizer with plate-fin heat exchange elements having the area of 0.08 m2 per cycle equal to 3600 s was studied in the work. An increase in the initial content of soluble substances in the concentrated juice with freezing reduces the specific amount of ice formed on the heat exchange surface. Increased release of frozen ice was observed at the refrigerant lower boiling point. An increase in the initial content of soluble substances in sea buckthorn juice reduces the value of the ratio of soluble substances in the concentrated juice in relation to the initial value. An increase in the refrigerant boiling point causes a decrease in the concentration level. The degree of sea buckthorn juice concentration also decreases with an increase in the content of soluble substances in the initial juice supplied for concentration by freezing.
Employment management of the rural population in the system of labor rehabilitation support in the Yemelyanovsky district of the Krasnoyarsk territory
Authors: Frolova O Ya , Shmeleva Zh N 
Published: October 2021

Abstract
The necessity of social partnership in the management of the rural population employment on the basis of the programs “Support of labor rehabilitation and subsequent employment of disabled people” on the platform of the “Territorial Agreement” is shown. In the conditions of the employment policy activation it reduces the unemployment rate in the municipal districts. It is important not only to analyze the causes of rural unemployment, but also to study the structure of labor resources for the development of the rural population employment trajectories. In rural areas, employment management is considered from the perspective of increasing the labor potential of municipalities. The process of employment management is formed on the basis of the development dynamics of both industrial and social processes, the pace of scientific and technological progress and the need to increase the innovative sensitivity of labor collectives in agricultural organizations. The processes of society humanization outline the trajectory of social adaptation and support in solving issues related to the life of disabled people, as the most vulnerable category of citizens. We associate the management of the rural population employment with the procedural elements of the organizational mechanism functioning: the conclusion of the “Territorial Agreement on the promotion of employment of disabled people” (draft) and the implementation of the Program “Support of labor rehabilitation and subsequent employment of disabled people”. The mechanism for managing the rural population employment at the municipal level ensures the functioning of a social partnership between the Agency for Labor and Employment of the Population of the Krasnoyarsk Territory, the executive bodies of the Yemelyanovsky district municipality and the business systems of the district, which facilitate disabled people’s social adaptation; expand their professional and labor activities; create conditions for employment.
Architectural insight to complex information systems of management of agricultural enterprises dealing with innovative cultivation of plants
Authors: Vartanyan Arevshad , Vartanyan Artur , Tokmajyan H , Tokmajyan V 
Published: October 2021

Abstract
The cost price and viability of plants grown by agricultural enterprises depend not only on their biological characteristics, but also on the environment, which provides them with water, air and nutrients in addition to light and heat. Moreover, water is the most important factor in the yield of cultivated crops, which determines all vital and technological processes in plants, the quantity and quality of the crop etc. The increase of the viability and quality of plants can be ensured by monitoring and controlling both the growing process of a plant and the environment, fertilizers and irrigation water applied into the soil. Designing an informative solution for an agricultural enterprise within the framework of an architectural approach is based on the architectures of databases, applications and communications subordinate to the architecture of the business and is supported by modern IT: data processing centers, transmission channels and application systems. Such solutions will allow monitoring the acidity, temperature and moisture content of the soil, which, for example, can be increased with the help of technological innovation - polymer-mineral material (PMM) introduced into the soil. PMM accumulates water, improves productivity and plant vitality and saves resources.
Risk management in the export activities of agricultural enterprises
Authors: Dalisova N A , Yamshchikov A S 
Published: October 2021

Abstract
The success of any enterprise, including agricultural in modern conditions, is achieved only by conducting a competitive struggle. That is why enterprises are forced to take actions to improve the efficiency of their work. Increasing efficiency allows you to increase the competitiveness of enterprises. In turn, a competent increase in competitiveness increases profits and strengthens the company’s position in the market. In this article, as a result of the analysis, a project for the development of the organization has been developed, on the basis of which a production program will be formed that contributes to improving the efficiency of activities.
Soil cultivation efficiency in pasture management of the arid zone of Central Asia and Kazakhstan
Authors: Mukhambetov B , Abdinov R , Kadasheva Zh , Alzhanova R , Doskaliyeva S , Kabiyev Y 
Published: October 2021

Abstract
Research work on the radical improvement of pastures with the sowing of prostrate rods (Kochia prostrate) against the background of plowing the soil to the depth of 20-22 cm has been carried out in the CIS countries since 1936 to this day. Despite the long-term study, in modern conditions, there are no industrial sowing of prostrate rods in Kazakhstan. The repeated attempts to introduce rods into production have failed. The long-term experiments (more than 50 years) have shown that Kochia prostrate does not sprout every year (approximately, two years out of five years, and then in places and sporadically). In one place full-fledged seedlings are provided, and in another place they are absent. That is, tillage does not provide the required efficiency. In this review, on the basis of original studies, the development of soil conditions for the growth of Kochia prostrate during soil cultivation is detailed. As known, when plowing, the upper fertile soil horizon is thrown down and it is buried by the less fertile, more structureless soil of the lower horizons. This, firstly, leads to the development of a hard crust impenetrable by Kochia prostrate sprouts and, secondly, when dry, solid soil blocks are formed under the seeds, impermeable by hypocatilny roots of Kochia prostrate. Therefore, sprouts of either die during dump plowing, or full-fledged shoots are not formed on it. The current dead-end situation with soil cultivation can be corrected by developing a new theoretical concept and, on its basis, developing a technology for soil cultivation and Kochia prostrate cultivation.
Varietal wheat responsiveness to the use of pesticides and fertilizers
Authors: Keler V V , Martynova O V , Demeneva A A 
Published: October 2021

Abstract
The article considers the reaction of the variety «Novosibirskaya 15» to the use of insecticides, fungicides, herbicides, as well as nitrogen fertilizers. Maximum yield of modern spring wheat varieties can be expected only when they are cultivated with elements of intensive technology in crop production. These are the improvement of soil fertility, the system of fertilizers and crop rotations, the use of zoned varieties, the integrated system of plant protection, the improvement of the tillage system, complex mechanization, etc. The fulfillment of these conditions makes a huge contribution to obtaining a high grain yield of excellent quality. In this regard we have studied individual elements of intensive technology and their contribution to the yield of one of the most popular varieties in the Krasnoyarsk Territory. The influence degree of pesticides and fertilizers usage on the elements of the crop structure and its quantity in the spring soft wheat variety «Novosibirskaya 15» was determined by the methods of mathematical statistics. It was established that in order to obtain the maximum productivity of this variety in the Krasnoyarsk Territory it is recommended to use both previous fallow and grain with maximum intensification and fertilization.
Fisheries as a factor of strengthening food security in Russia
Authors: Bogachev A I , Dorofeeva L N 
Published: October 2021

Abstract
The study provides a comprehensive assessment of the role of the fishery complex in ensuring food security. The health and life expectancy of the population largely depend on the amount of fish consumed. The main source of fish intake in the diet of Russians is the industrial catch of aquatic organisms. The catch volumes have been relatively stable in recent years. Aquaculture production in Russia is insignificant, but continues to grow. The analysis revealed a low dependence of food supply on imports and a high degree of self-sufficiency in fish products in Russia. Due to the decrease in the purchasing power of the population’s income and price inflation, the physical and economic accessibility of fish and fish products for a significant part of consumers is decreasing. The structure of consumption is dominated by cheap fish products and products with a low processing depth. A tendency towards a decrease in the quality of fish products in the consumer market has been revealed. These factors indirectly threaten the food security of Russia.
The problem of state support measures in the agro-industrial complex of the Russian Federation
Authors: Fastovich G G , Kapsargina S A 
Published: October 2021

AbstractThe article presents the author’s view on the state regulation of the agro-industrial complex in the Russian Federation. The authors made an attempt to analyze the measures of support of domestic farmers from the public sector, identified the positive aspects of the current norms of federal legislation that contribute to the development of farming. It is shown present development of the agro-industrial complex, the support of domestic agricultural producers is one of the most effective tools that allows modern Russia to occupy a leading position.
The effect of herbicides on the infestation of winter wheat crops
Authors: Glazunova N N , Bezgina J A , Shipulya A N , Volosova E V , Pashkova E V 
Published: October 2021

Abstract
Weed vegetation is a serious competitor to cultivated plants. Weed vegetation spends important elements and moisture on its vital activity, thereby reducing the yield. Weed control is an important element of the cultivation technology of any agricultural crop. Winter wheat is the main important crop in the South of Russia, the yield of which affects the quality of life of the population. The use of herbicides is the basis of protective measures against weeds. Modern trends in the development of the agro-industrial complex recommend a reduction in pesticide treatments, however, there is no other alternative for weed control. Our research is aimed at studying the biological effectiveness of herbicidal treatments and their effect on the development of weeds.
The effect of feeding the cavitating sunflower oil sludge on the hematological parameters of steers
Authors: Kurilkina M Ya , Muslyumova D M , Zavyalov O A , Duskaev G K 
Published: October 2021

Abstract
The article studied the effect of cavitation-treated sunflower oil sludge on the morphological and biochemical blood parameters of Kazakh white-headed steers (n=3) at the age of 13 months. During the preparatory period, the steers were transferred to experimental rations. In the diet of the steers of the I experimental group, 10% of the sunflower oil sludge from the concentrated part was additionally introduced, and the second-10% of the sunflower oil sludge, subjected to cavitation treatment, from the concentrated part. The results of the study showed that the animals of the II experimental group were superior to their peers of the I experimental and control groups in terms of hemoglobin by 3.2-6.8 %, red blood cells by 1.1-3.7 %, total protein content by 3.1-5.1 %, albumin-by 1.9-6.3 %. Based on the results obtained during the study, it was noted that when cavitated sunflower oil sludge is introduced into the diet of steers, a change in the hematological parameters of their blood is observed, which is expressed in the stimulation of protein metabolism in the body – increased levels of total protein and albumin in the blood serum. This may indicate a more intensive growth processes of steers of this group of animals.