bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Distribution of Radio Quiet Active Galactic Nuclei in the Star Formation Rate-stellar Mass Plane
Authors: Garofalo David , Mountrichas George 
Published: June 2022

Abstract
That active galactic nuclei (AGN) with jets can alternately enhance as well as suppress star formation rates, explains the location and slope of radio loud AGN on the star formation rate—stellar mass plane. Here, we explore 860 type 1 and 2 AGN at z < 0.2 from the ROSAT-2RXS survey in order to understand both different location and lower slopes for non-jetted AGN in the star formation rate—stellar mass plane. We describe the nature of these differences in terms of different degrees of black hole feedback, with relatively weak negative feedback from non-jetted AGN compared to both relatively strong positive and negative feedback from jetted AGN. The validity of these ideas brings us a step closer towards understanding the black hole scaling relations across space and time.
Holographic Schwinger effect in a rotating strongly coupled medium
Authors: Cai Yi-Ze , Jing Rui-Ping , Zhang Zi-Qiang 
Published: June 2022

Abstract
We perform a potential analysis on the holographic Schwinger effect in a rotating deformed AdS black-hole background. We calculate the total potential of a quark-antiquark (

) pair in an external electric field and evaluate the critical electric field from Dirac-Born-Infeld action. It is shown that the inclusion of angular velocity decreases the potential barrier, thus enhancing the Schwinger effect, which contrasts with the effect of the confining scale. Moreover, increasing the angular velocity decreases the critical electric field, above which these pairs are produced freely without suppression. Furthermore, we conclude that

pair production would be easier in a rotating medium.
A Baseline Correction Algorithm for FAST
Authors: Liu De-Jian , Xu Ye , Li Ying-Jie , Lin Ze-Hao , Bian Shuai-Bo , Hao Chao-Jie 
Published: June 2022

Abstract
The Five-hundred-meter Aperture Spherical radio Telescope (FAST) is the most sensitive ground-based, single-dish radio telescope on Earth. However, the original H i spectra produced by FAST are affected by standing waves. To maximize the power of FAST for high-sensitivity observations, we proposed an algorithm that combines fast Fourier transforms and extreme envelope curves to automatically correct the baselines of FAST H i spectra and remove standing waves from the baselines. This algorithm can reduce the amplified noise level caused by standing waves to a near-ideal level without losing signals or introducing false signals. The root mean square of the average baseline reaches ∼8 mK, approaching the theoretical sensitivity of an H i spectrum produced by FAST for an integration time of 335 minutes, i.e., ∼6 mK.
Riverbed processes in the lower reaches of the Amu Darya river in conditions of anthropogenic impact on the river flow
Authors: Baymanov K I , Uzakov T J , Baimanov R K , Tajibaev Sh 
Published: June 2022

Abstract
The interaction of the river flow with bottom riverine forms is considered under the significant influence of anthropogenic factors leading to changes in the water regime, the riverbed process and the ecology of watercourses. The section under consideration in the lower reaches of the Amu Darya River, taking into account the nature of the influence of both hydroelectric units, is divided into three parts: the upper section – from the Tuyamuyun hydroelectric unit to the Kipchak gorge; the middle section – from the Kipchak gorge to the Takhiatash hydroelectric unit; the lower section – from the Nietbaytas hydropost to the Kyzyljar hydropost (the delta part of the Amu Darya River). The regularities of the negative impact of anthropogenic factors on the hydraulic regime and the course of riverbed processes have been studied at these sites. The scale of the impact of anthropogenic factors significantly altering the course of the riverbed process has been determined and a generalized indicator characterizing the complex of various anthropogenic loads has been developed. It shows the change in water and riverbed regimes under the influence of hydraulic engineering measures in recent years in the lower reaches of the Amu Darya River, which are still observed in the case of wandering of the stream and the occurrence of peculiar currents, as well as deigish, where the banks are not protected by structures. In places where damless water intakes are located in channels, due to the large width of the river, planned instability occurs, which complicates water supply. According to the results of the analysis of the mechanism of these phenomena, appropriate measures have been developed to improve water intakes.
Evaluation of potato hybrids for the Arctic zone of Russia by the ranking method
Authors: Tulinov A G , Lobanov A Y 
Published: June 2022

Abstract
In the Republic of Komi (Russia), potatoes are the most common vegetable crop, widely cultivated by both agricultural enterprises and the population in the private sector. Selection of varieties that meet such criteria as high yield, adaptability to soil and climatic conditions, high stability (the ability to produce an equivalent yield both under favorable and unfavorable environmental conditions), as well as resistance to the main phytopathogens that affect the tops and tubers (late blight, rhizoctoniosis, alternariosis, common scab, etc.) in the field is an important factor in ensuring Russia’s food security in the Arctic zone. To select the most promising hybrids that passed through negative traits in the first phases of breeding, it is preferable to use ranking methods according to various parameters, such as ecological plasticity, stability, multiplicity coefficient, homeostaticity, etc. This will allow a more objective and complete assessment of the potential of potato genomes for creating new varieties adapted to the Arctic zone of Russia. The studies were carried out in breeding nurseries on the basis of the Institute of Agrobiotechnologies of the Federal Research Center of the Komi Scientific Center of the Ural Branch of the Russian Academy of Sciences (Russia, Syktyvkar) from 2018 to 2020. The following promising samples of potatoes were studied, the hybridization of which was carried out at the Federal Research Center for Potatoes named after A. G. Lorkh (Russia, urban settlement Korenevo): 1992-14 (Luck x Elmundo), 2000-60 (Colette x FZ 1867), 2118-57 (2688-8 x Gala), 2139-5 (Courage x Aurora), 2142-1 (Dina x Kholmogorsky); the standards were zoned varieties of two groups of maturity: Udacha - early, early ripe, Nevsky - medium early. Based on the results of studies of promising potato hybrids for further selection in the conditions of the Komi Republic, the following hybrids were recommended by the sum of ranks and assessment of field resistance to phytopathogens: 1992-14, 2000-60 and 2139-5.
About the longitudinal slopes of flat rivers
Authors: Baymanov K I , Toreev A L , Baimanov R K 
Published: June 2022

Abstract
The article discusses the methods of determining the longitudinal slopes of rivers, their advantages and disadvantages are noted. Various methods of determining the longitudinal slopes of rivers are analyzed. It is revealed that the weighted average slope adopted by the hydrometeorological service, determined by the graphoanalytic method, does not fully reflect the essence of the influence of slopes on the speed of water movement. It is noted that it is expedient to use the differential equation of uneven motion to determine the slopes of the water surface in the lower reaches of lowland rivers. The criterion ratio of slopes characterizing the stability of the riverbed in the longitudinal direction is revealed. The hydraulics-morphological method of determining the level and longitudinal slope of the free flow surface, as well as quantitative criteria for the movement of river flows, has been continued.
Population organization of rare species of the genus Jurinea as an indicator of conservation of steppe ecosystems of the Volga Region (Russian Federation)
Authors: Ilyina V N , Zenkina T E , Mitroshenkova A E , Kozlovskaya O V , Sagalaev V A 
Published: June 2022

Abstract
The article presents the results of the study of the population structure of rare species of the genus Jurinea (Jurinea polyclonos (L.) DC. s. l. (incl. Ju. tenuiloba Bunge), J. ewersmannii Bunge, J. ledebourii Bunge and J. multiflora (L.) B. Fedtsch.) in the steppe Volga region (European part of the Russian Federation). The species is characterized by rarity and its population characteristics change under the influence of anthropogenic factors. The works were carried out in 2000-2021 using population-ontogenetic methods. The species has insufficient potential for self-regeneration of their natural populations. Demographic indices (Replacement index, Recovery index, Aging index) are low. Ontogenetic spectra of populations are similar in their parameters, the predominant group of individuals are mature generative. Anthropogenic pressure leads to a decrease in the number of individuals, their density, low reproductive activity, and gradual aging of populations.
The biological control of pests in sowings of spring rapeseed Brassica napus L.
Authors: Semerenko S A , Bushneva N A 
Published: June 2022

Abstract
The efficiency of biological insecticides against Phyllotreta cruciferae (Goeze, 1777) and Meligethes aeneus (Fabricius, 1775) in sowings of spring rapeseed Brassica napus L. was studied. The researches were conducted in V.S. Pustovoit All-Russian Research Institute of Oil Crops (Krasnodar, Russia) in 2017–2019. The results showed the prevalence of Ph. cruciferae on seedlings of Brassica napus L. was equal to 8.0 beetles/plant in 2017, in 2018 – 6.0 beetles/plant, in 2019 reached 9.0 beetles/plant. Mass colonization of plants with beetles of M. aeneus Fab. occurred in a phase of rapeseed bud formation, and in 2017 it reached 8.0 beetles/plant, in 2018 – 6.0 beetles/plant, in 2019 – 9.0 beetles/plant. The insecticide Biostat, EC demonstrated the highest biological efficiency against both pests: 87.0 and 89.0%, respectively, saved yield was 0.31–0.30 t/ha. In a production trial, Biostat, EC appeared to be the best, with the efficiency of 85 and 88.9%, which allowed receiving the reliably high yield – 1.71 t/ha.
Optimal timing for harvesting rapeseed for biofuel
Authors: Vlasenkov A N , Perekopskiy A N , Dementiev A M 
Published: June 2022

Abstract
The scientific article discusses the issues of increasing the efficiency of harvesting in the cultivation of rapeseed for biofuel, by determining the optimal timing of seed harvesting, depending on their ripeness, climatic characteristics of the region, variety, and predecessor. The studies presented in the article provide information on how to calculate the period of full ripeness (the ripeness of seeds located in the upper tier of the plant), and an empirical dependence was obtained to determine the loss of seeds from the moment of full ripeness to the day when harvesting is done. Previous studies have provided data on the loss of rapeseed seeds during early harvesting. The data obtained showed that the optimal period for harvesting rapeseed for biofuel is 1-3 days, after the onset of the full ripeness phase.
Study of the strength characteristics of a section of an endless thick-walled pipe in the calculation of equipment for lifting water
Authors: Borisova V L , Sazonova E A , Kurskaya Yu A , Vernigor A V , Fomchenkova G A 
Published: June 2022

Abstract
The article considers a model of a thick-walled pipe for use in wells when pumping water from deep wells. First, the calculation is carried out for the strength of the pipe body, far from its ends, for certain types of loads - volumetric compression, longitudinal force and torque, then for their combined action.
Selection of variety and length of grape rootstock when growing grafted seedlings
Authors: Titova L A , Avdeenko I A 
Published: June 2022

AbstractThe industrial culture of grapes necessitates the formation of highly productive plantations. The grafted culture of grapes, in comparison with the own-rooted one, solves a number of problems of industrial viticulture. However, the increased costs for the production of grafted seedlings in comparison with own-rooted ones necessitate a reduction in the cost of their production, which can be achieved by reducing the length of the underground stem, and obtaining the greatest amount of yield can be achieved by choosing the right rootstock variety. An analysis of current research showed a lack of knowledge of this issue, which served as the basis for setting up research that was carried out from 2019 to 2020 in the fields ARRIV&W named Ya.I. Potapenko (branch of FRARC). The aim of the research was the selection, for grafted seedlings of the Prestige grape variety, of the optimal length and variety of the rootstock, with an assessment of the impact on biometric indicators. The rootstock variety had the greatest influence on the quality of seedlings. In the variant with the rootstock variety Kober 5 BB, the final yield of seedlings was low and varied from 8.1 to 37.2%. A significant increase in the yield of seedlings was observed when using the rootstock variety Riparia Rupestris 101-1, which varied from 30 to 48%, which is 1.3-3.7 times more than when using the rootstock Kober 5 BB. In addition to significant differences in the options when choosing a rootstock variety, according to the results of the research, there was a tendency to increase the final yield of seedlings with a decrease in the length of the rootstock from 45 cm (standard length of the rootstock) to 30 cm for both varieties.
Elements of container technology for growing blackberry varieties Ouachita
Authors: Ladyzhenskaya O V , Aniskina T S , Kryuchkova V A 
Published: June 2022

Abstract
The demand for blackberry (Rubus Eubatus Focke), as for berry crop, is constantly growing. The studies’ aim was to define an optimal type of a pot and an optimal nutrition for growing blackberry seedlings. The objects of the research were the blackberry variety ‘Ouachita’, Air Pot and the classic C10 plastic pot, Osmocote® Exact High K and OMU organomineral fertilizer for fruit and berry crops. The experiment took place in the “Love Berry” nursery situated in the Dmitrovsky district (Moscow region, Russia) in 2021 in five repetitions. It was discovered that the root system volume of the plant material and the length of its shoots has a low variation in different variants - up to 10%. The variation of shoots number is high and ranges from 25 to 40%. Root volume variability depends for 92% on the chosen fertilizers, with the highest values (900-1000 ml) achieved with Osmocote and 400-600 ml with OMU. As for the number of shoots, the variants of the research do not differ. The shoots length is affected as by a combination of factors (46%) so also pot’s (42%) and fertilizer’s (2%) types separately.
Development of algorithms for an information-measuring system for assessing changes in the physical variables of the environment based on physical and mathematical models of ecological systems
Authors: Panarin V M , Grishakov K V , Grishakova O V , Maslova A A , Arkhipov A V 
Published: June 2022

Abstract
The article deals with complex heterogeneous systems with distributed parameters and their mathematical part. Four algorithms for estimating parabolic and hyperbolic systems are considered. The developed algorithms will make it possible to carry out a fairly complete analysis in the temporal and spatial domains of measurement, and also serve as the basis for new models of information, measurement and control systems that make it possible to explore vast territories. These developments are necessary to assess the change in the physical variables of the environment, in particular, the most accurate prediction of the spread of pollution in temporal and spatial coordinates
Analysis of indicators of the ecological state of the environment in the Kyrgyz Republic
Authors: Oznobikhina L A 
Published: June 2022

Abstract
Due to economic difficulties, less and less funds have been allocated for environmental protection recently. The economic activity of mankind over the last century, in fact, has led to the pollution of our planet with plastic bags with various waste products. The problem of environmental pollution is as complex as it is serious. The development of industry, urban agglomerations, an increase in the flow of vehicles and noise significantly affects the environment and, as a result, the health of the population.
The dynamics of forest ground fires in the Saratov region
Authors: Ivchenko O A , Tyutin A V , Kozachenko M A , Pankin K E 
Published: June 2022

Abstract
Forest fires are inevitable, as they have pyrological properties, which in turn are associated with weather conditions. Forest fire has a dynamics, i.e. the rate of its spreading under weather conditions and will continue until all available forest fuels are burn out or will extinguished. An important component of forecasting forest fire situations is the assessment of the dynamics of a forest fire, which makes it possible to assess the risk of its spread across the territory. The rate of spread of a forest fire is calculated from the ratio of the increment of area to time. Nevertheless, to obtain an accurate estimate, it is necessary to know the time of its occurrence, which is impossible in practical terms, since in case of careless handling of fire, they are usually not fixed for a while, and in case of deliberate arson, it is difficult to find and interrogate the arsonists. For solving this task, a mathematical model was created that makes it possible to calculate the average rate of development of a forest fire based on the rate of development of a fire (increase in the length of the edge of a forest fire over time) during its extinguishing, as well as the rate of extinguishing a fire. An assumption was made about the additive nature of the rate of increase in the length of the edge and the rate of quenching. Average rate of ground wild fire spread and the estimated time of its occurrence were calculated. The rate of spread of ground wild fire are compared with the data on the wind speed in the study area and the value of the complex indicator of fire danger. It was shown that forest fires spread only when the 3rd class of wild fire conditions is established according to weather, and the wind rate affects the dynamics of a ground wild fire only up to a 10 m s-1.
Evaluation of yield and parameters of ecological adaptability of breeding lines of winter soft wheat in the forest-steppe of the Middle Volga region
Authors: Zakharova N N , Zakharov N G 
Published: June 2022

Abstract
The article presents the results of a study of breeding lines of winter soft wheat in terms of yield and various parameters of ecological adaptability. It has been established that the high adaptive properties of winter soft wheat genotypes are not combined with high yields. Breeding lines of winter soft wheat with a compromise between yield and ecological adaptability have been identified. A comprehensive assessment of the yield and parameters of ecological adaptability of genotypes in the breeding process of winter soft wheat contributes to greater agroecological stability of the created varieties.
Digital solutions for the ecological aspect of the sustainability of agroecosystems
Authors: Ufimtseva M G , Kuznetsov S E 
Published: June 2022

Abstract
The article presents the results of the development of a cartographic basis for a specific agricultural landscape used for the production of vegetables and potatoes under irrigation. Studies allow us to say that the landscape features of the territory, namely the exposure of the slope, are clearly correlated with the content of nitrogen, phosphorus and potassium. The slope of the agrolandscape is directed north to the Emurtla River and the values of agrochemical indicators are increased in the same direction. The cartographic basis obtained by us can be used for elements of precision farming, in particular for differentiated fertilization, and for the development of an adaptive-landscape farming system on the farm.
Energy-efficient resource-saving control system in gas production and gas transportation
Authors: Gulyaev S V , Pashchenko F F , Pashchenko A F , An B T , Hieu T D 
Published: June 2022

Abstract
An energy-efficient resource-saving intelligent control system for gas production and gas transportation processes is proposed. The system provides pressure stabilization in the general reservoir of a cluster of gas wells when the physical and technical parameters of gas production change within a wide range. An adaptive PID controller with a controlled frequency of the control signal significantly increases the resource of technical control tools. The system uses a volumetric-vane converter of gas flow energy into electricity. Such a converter ensures energy recovery when the gas pressure entering the area of the switching equipment decreases and when the transition from the main gas pipeline to gas consumers is reduced. This significantly increases the energy efficiency of gas production and transportation.
Well surveys with jet pumps after hydraulic fracturing
Authors: Verisokin A E , Shlein G A , Gunkina T A , Yu Verisokina A 
Published: June 2022

Abstract
Hydraulic fracturing (HF) is successfully used all over the world and allows to increase the efficiency of the well, as well as to put into operation wells with plugged bottomhole zone. Service companies every year pay more and more attention to hydraulic fracturing and the promotion of new solutions to further increase the efficiency of this technology, which contributes to its importance in the stimulation of production. The main advantage of hydraulic fracturing is to increase the drainage area of the reservoir, and especially when performing multi-stage hydraulic fracturing (MSHF). Violation of the induction stimulation technology after hydraulic fracturing can lead to proppant blowback not only at the development stage, but also at the well operation stage. One of the solutions to prevent such complications is the use of jet devices, which make it possible to fix the proppant in the fracture and reduce the well development period. The article investigates the results of hydrodynamic studies of wells with jet pumps. Various forms of indicator diagrams are given and their description is made. The method of calculation of reservoir parameters by pressure build-up has been studied. The results of data processing of hydrodynamic studies by a jet pump are presented.
Productivity of varieties of winter triticale with the use of nitrogen fertilizers in the flat irrigated zone of Dagestan
Authors: Ismailov A B , Sh Gimbatov A , Muslimov M G , Radzhabov A N , Mustafaeva Kh D 
Published: June 2022

Abstract
The purpose of the research is to study the responsiveness of winter triticale varieties to the use of nitrogen fertilizers, which makes it possible to identify the potential productivity of various varieties in the conditions of the flat irrigated zone of Dagestan. Some elements of the technology for growing new varieties of winter triticale have been studied on meadow-chestnut soil under irrigated conditions in the flat zone of Dagestan. A comprehensive assessment of the effect of nitrogen fertilizers on the stages of organogenesis, the formation of the main structural indicators and the yield of winter triticale varieties is given. The article presents the results of the effects of nitrogen fertilizers on the development and formation of the crop of new varieties of winter triticale. The reaction of varieties of winter triticale to fractional and single application of nitrogen nutrition was determined.