bluuebunny/crossref_metadata_2025_split huggingface dataset:
Fish Capacity of a Sand Pit by Zoobenthos of the Sura River Floodplain within Penza Region
Authors: Asanov A Y , Kaeshova I V , Nosov A V 
Published: January 2022

Abstract
Sand pits have great potential in terms of domestic aquaculture development, therefore assessment of their natural fish capacity is essential in terms of food resources. The assessment of fish capacity by zoobenthos in a sand pit deprived of representatives of ichthyofauna was carried out. It was found out that zoobenthos of a sand pit in the flood plain of the Sura river has not rich species composition that varies considerably by seasons with multiple fluctuations of population number and biomass. At the same time the highest values were observed in June, the productivity of zoobenthos increases with increasing water temperature and decreasing water level. By the number of taxa, the number of population and biomass of fodder zoobenthos the sand pit is inferior to the Municipal water storage basin on the Sura river. Fish capacity of forage zoobenthos of the pit by zoobenthos was 14.42 kg/ha, which was 2-3 times lower than in Sursky and City reservoirs, the natural bed of the Sura river. Due to reclamation works in drained pits it is possible to increase the productivity of zoobenthos. In permanently watered pits the cultivation of benthic fishes is rather limited.
Spring wheat productivity when using Megamix liquid fertilizers
Authors: Vasin A V , Burunov A N , Vasin V G , Strizhakov A O , Tkachuk O A 
Published: January 2022

Abstract
At present, the attention of scientists is increasingly attracted by the study of the effect of stimulating preparations on agricultural plants. They have a rich composition of macro-, meso- and microelements in an easily accessible form for plants, the use of which has a positive effect on plant development and, as a consequence, contributes to improving the quantity and quality of crop production, including in the specific climate of the forest-steppe of the Middle Volga region. In this connection on the fields of Scientific Research Laboratory “Korma” of Samara SAU the work to identify the impact of application of stimulating preparations Megamix in the form of liquid fertilizer mixtures in pre-sowing seed preparation and treatment of crops during the growing season of spring wheat was carried out during five years (2017-2021). The paper presents the results of research on the effect of stimulating preparations on the development of soft spring wheat agrophytocenosis at different seeding rates (4.0; 4.5; 5.0 mln germinating seds/ha). The analysis of the influence of the use of Megamix preparations on the indices of photosynthetic activity of plants, indices of yield structure and yield of spring wheat was carried out. It was found that the use of liquid fertilizers Megamix during seed treatment and in the growing season has a positive impact on the index of photosynthetic potential of crops. This indicator increases with the use of Megamix. It reaches its maximum value in the experimental variants, where seeds are treated with a stimulating preparation Megamix Seeds − 2 l/t, followed by treatment of spring wheat crops with Megamix Profi − 0.5 l/ha (in the phase of tillering (29BBCH)) + Megamix Nitrogen − 0.5 l/ha (in the phase of the flag leaf (39BBCH)), which forms the maximum yield of 3.98 t/ha.
Efficiency of humic and mineral fertilizers in the technology of spring wheat cultivation
Authors: Bogomazov S V , Levin A A , Efremova E V , Tkachuk O A , Lyandenburskaya A V 
Published: January 2022

Abstract
The article presents the results of studies on the effect of humic fertilizer Gumostim and mineral fertilizers on the formation of productivity of spring soft wheat varieties Tulaykovskaya 108. The work performed allows us to expand our understanding of the effect of humic acid salts in humic fertilizers on the development of spring wheat and give recommendations on methods for their use in order to increase the yield and quality of household products, preserving the ecological cleanliness of the environment. The research objective is to improve the elements of spring wheat cultivation technology under the conditions of the forest steppe of the Middle Volga region, which allow to optimize the conditions of growth and development through the integrated use of humic and mineral fertilizers. Studies have found that the use of humic fertilizer Gumostim increases field germination of spring wheat seeds by 0.8-1.2%, the net productivity of photosynthesis to 5.16 g/m2 × day, ear grain content by 13%, grain weight per plant by 15%, yield by 0.55 t/ha. Mineral fertilizers increase the net productivity of photosynthesis to 5.30 g/m2 × day, ear grain content by 36%, spring wheat yield by 1.01 t/ha. The combined use of Gumostim and mineral fertilizers increases the net productivity of photosynthesis to 5.47 g/m2 × day, ear grain content by 83%, grain weight per plant by 45.8%, spring wheat yield by 1.55 t/ha.
Methods for pre-sowing treatment of legume grass seeds to improve their sowing properties
Authors: Kshnikatkin S A , Alenin P G , Voronova I A , Kiryukhina T A 
Published: January 2022

Abstract
In recent years, more and more areas of agricultural land have been cultivated with the valuable non-traditional fodder crop galega, which perfectly combines high productivity with excellent fodder values and sustainable seed production, rationally uses agro-climatic conditions of the zone and increases soil fertility, and is valuable as a forecrop and a honey-bearing plant. The sowing material of the Eastern galega contains 50…95% of seeds with a hard shell. Seed hardness is explained by impermeability of seed shells to water and air. To increase the germinating capacity of seeds and reduce the norm of galega seeds sowing to 2.0 million/ha the sowing material of perennial leguminous fodder crop - Eastern galega should undergo pre-sowing treatment - scarification and seed inoculation. The construction and working principle of the developed technical means are presented: a scarifier SS-0,5 and an inoculator IS-1,0. The developed scarifier and inoculator of seeds of leguminous crops qualitatively perform the technological process of pre-sowing treatment of Eastern galega seeds. At optimum feed of 0.5 t/h and 1.0 t/h, the quality indicator of Eastern galega seed scarifying reaches 98.8 %, the completeness of inoculator treatment reaches 99.8 %, without seed damage that meets the agrotechnical requirements.
Qualified staff for agribusiness in the Penza region
Authors: Pozubenkova E I , Guryanova N M , Rassypnova Yu Yu , Bekreneva N N 
Published: January 2022

Abstract
The Decree of the President of the Russian Federation “On national goals and strategic objectives of the development of the Russian Federation for the period up to 2024” deals with the priorities for the creation in the basic sectors of the economy, primarily in the manufacturing industry and the agro-industrial complex, a highly productive export-oriented sector, developing on the basis of modern technologies and provided with highly qualified specialists. The strategic goals are not only to increase the efficiency of the agro-industrial complex through the introduction of innovations, but also to increase the level of employment and the quality of life in the countryside. The current research also emphasized on stabilizing the number of highly qualified specialists, reducing their migration outflow. Indeed, the quality of the developed and adopted management decisions also depends on the qualitative representation of the management staff, and, consequently, the indicators of enterprises efficiency in agribusiness. The research provides analytical information on the resource and productive indicators of the development of agriculture in the Penza region, the recruitment of the qualified staff (managers and other specialists) by the agricultural organizations, their qualitative number and mobility. It is concluded that it is necessary to form a state program of personnel support for the agro-industrial complex, contributing to the integration of a systemic and integrated approaches in the reproduction of highly qualified specialists.
Conservation of commercially hunted ungulates biodiversity in Transbaikalia by ensuring efficient veterinary measures
Authors: Tretyakov A M , Kiriltsov E V , Chernih V G , Boryaev G I 
Published: January 2022

Abstract
The article is devoted to the conservation of hunting and commercial ungulates biodiversity in Transbaikalia. The results of complex parasitological analysis are described. In hunting and commercial ungulates in the Trans-Baikal Territory, 22 species of helminths and 1 species of protozoa were parasitized. A complex of preventive veterinary measures aimed at maintaining the sanitary well-being of biocenoses is observed.
Numerical study on the influence of boundary conditions on the blast response of composite plates
Authors: Lomazzi L , Vescovini A 
Published: January 2022

Abstract
Blast loading represents a critical dynamic condition for both metal and composite structures. The blast response of metal materials has been extensively dealt with by researchers through experimental, analytical and numerical analyses, while composite materials appear to have been investigated in less detail. In this work, the blast response of a composite plate is numerically investigated employing the pure Lagrangian and the fully coupled Eulerian-Lagrangian (CEL) approaches using the LS-DYNA® software package. The latter methodology is set up to describe the effects determined by close-range explosions, such as the strongly non-uniform pressure distribution on the plate exposed area. Moreover, this work focuses on the characterisation of the influence of the boundary conditions on the plate response. The numerical methodology established in this work is set up and validated according to similar studies present in the literature.
Fatigue damage evolution using NDT techniques for Health Monitoring of CFRP laminates
Authors: Nobile R , Panella F W , Antonazzo R , Pirinu A , Saponaro A 
Published: January 2022

Abstract
In this work, an experimental method based on ultrasonic measurements with piezoelectric transducers (PZTs) was proposed for monitoring the evolution of fatigue damage on a batch of carbon fabric Open Hole specimens. The amplitudes of the recorded ultrasonic sinusoidal waves in packets were evaluated with pitch-catch modality during the different phases of the fatigue life and correlated to the applied loads.
The examination of the ultrasonic data showed high sensitivity of the UT signal respect to stiffness decay and to fatigue damage associated with delamination near the hole. Occasional ultrasound measurements with the consolidated pulse-echo Phased Array technique were carried out by the authors at regular time intervals during the tests to evaluate the state of damage in relation to the degradation of the signal detected with the PZT sensors.
The results have shown the potential capability of the applied experimental technique for real-time detection of delamination on composite elements subjected to time-varying loads.
Performance comparison between electromechanical and electro-hydrostatic regenerative shock absorbers
Authors: Galluzzi R , Circosta S , Amati N , Tonoli A 
Published: January 2022

Abstract
Controllable damping solutions are increasingly finding their way into passenger cars and other vehicles. They improve ride quality by enhancing comfort and handling performance. Semi-active solutions based on controlled valves or variable-rheology fluids are by far the most common technologies in the automotive industry. However, regenerative alternatives that employ electric machines can be seen as a desirable evolution of the suspension market. In this context, the present paper studies two regenerative solutions: electro-hydrostatic and rotary electromechanical dampers. Transmission interfaces are particularly relevant in these technologies. Adequate choices are needed to guarantee proper packaging, performance, structural integrity, and high efficiency. This work compares both technologies in terms of design and packaging. Furthermore, experimental results are analysed to understand the performance of damping solutions. It is demonstrated that the rotary electromechanical device outperforms its electro-hydrostatic counterpart in important features, such as conversion efficiency, envelope, mass and dynamic behaviour.
Development of statistical methods to highlight differences between endurance limit of re-rolled steel sheets in an assumed homogeneous population
Authors: Beghini M , Monelli B D , Barsanti M , Macoretta G , Piccinocchi A 
Published: January 2022

Abstract
In this paper, we present the results of the activities carried out to estimate the axial fatigue strength of ASTM E566 Gr. 70 sheet metal. We describe the experimental setup, followed by the collected data. To highlight a possible inhomogeneity in some of the material properties, we estimate the endurance limit for the investigated material using various statistical approaches on the set of test articles. The data analysis was carried out both by considering as a whole the set of test articles and by dividing the set into two groups. As a new analysis technique, we propose a method introducing a bimodal distribution (Gaussian mixture).
On the Formulation of an Elastic-Plastic Beam Model: the Pre-Integration Idea
Authors: Iandiorio C , Salvini P 
Published: January 2022

Abstract
This paper provides a formulation of an elastic-plastic beam model. The constitutive behaviour of material after elasticity limit is considered perfect plastic. Although this is not a general plastic behaviour, it allows to minimize mathematical difficulties to fulfil the idea: pre-integration trough the thickness extended to material non-linearity. Three types of deformation mechanisms are found: fully elastic, plasticization over only one side or both of sides. The complete kinematic set of equations are obtained, together with the analytical stress trends. Yield stress-continuity equations are used to separate the elastic and plastic domains. These domains define a quasi-state diagram; Allowing to associate the normal force and bending moment acting on the section to the elastic-plastic state within the section. Note that in the case of a rectangular section, the solution is given in a fully analytical form, otherwise the domains are solved numerical solutions. But these last, may be obtained once for all, for any one-symmetrical section.
Vehicle localization combining non-linear state observer with artificial neural network
Authors: Montani M , Amirante S , Annicchiarico C , Capitani R 
Published: January 2022

Abstract
The developing of autonomous drive is needed to make people life more comfortable and safer, and one of the important skills to make possible the reliability of the all control system is a good localization of the vehicle. In this study, a no-linear state observer was developed using the Unscented Kalman Filter (UKF) algorithm, to estimate the global position, global orientation, and local speeds of a car inside a known path. A characterization of the sensors input measures was made and the measures of longitudinal and lateral vehicle speed were added using an Artificial Neural Network (ANN) trained in simulated manoeuvres. In this way, it was possible to reduce the error that the observer make on the estimation of the lateral vehicle speed, and so of the side slip angle, making possible an improvement of the control activity. To assess this increase in performance, a Montecarlo analysis was made comparing the architecture proposed, ANN+UKF, with state observed, UKF, with no input measure of lateral speed. The tests were done in co-simulation environment of Vi-Grade’s CarRealTime software and Matlab-Simulink.
Comfort assessment for electric kick scooter decks
Authors: Michelangelo-Gulino Santo , Vichi Giulio , Zonfrillo Giovanni , Vangi Dario 
Published: January 2022

Abstract
The LEONARDO project, funded under the Horizon 2020 framework, is aimed at developing a new concept of micromobility electric vehicle combining the benefits of an e-kick scooter (rapid learning curve, stability) and those of a monowheel (greater agility). The goal is the development of a vehicle able to increase the consensus towards electric micromobility for enabling a relevant spread of this green transport solution, thanks to specific expedients like: (a) the possibility of exploiting an auxiliary battery pack to increase the path traveled by the vehicle; (b) a mass reduced to 10 kg, allowing to easily lift and move the vehicle to routinely encountered upper-level spaces (steps, the trunk of a vehicle, etc.). The weight reduction compared to similar vehicles necessarily involves the replacement or elimination of bulky components like suspension elements; for this reason, the deck must have intrinsic shock absorbing characteristics to maximize the rider comfort.
The objective of the present work is the identification of a class of decks for e-kick scooters that best meets the user comfort needs in an urban environment. To this end, experiments have been performed replacing the aluminium deck of a commercially available electric scooter with decks of different materials; the comfort offered by each deck has been measured compatibly with the ISO 2631:1997 standard on a closed test circuit, in correspondence of six different obstacles that the rider may tackle in a typical urban scenario. The results of the study, read in a statistical key by regressive methods and analysis of variance, evidence highest compatibility with maximum comfort criteria for the 11.5 mm thick bamboo deck; namely, the test campaign evidences how the maximum comfort for the rider can be obtained with a deck having a stiffness similar to that of bamboo. In this context, the bamboo deck lacking of shock absorbers demonstrates superior performance compared to aluminium decks equipped with suspensions for the same application, with a mass saving of approximately 65%. Special care should however be paid to the forces the deck could sustain: moving from an aluminium to a bamboo deck which is 20 times less stiff, forces decrease of only 20%. Overall, these highlights represent a comprehensive set of elements to pilot the design of micromobility vehicles, from both standpoints of comfort and resistance.
Thermo magnetic FEM simulation of a PM synchronous motor with input data from telemetry driving cycles
Authors: Somà A , Mocera F , Venuti S 
Published: January 2022

AbstractNowadays, the requirements to reduce greenhouse gas emissions and to provide a healthy and more habitable environment, has led to the development of several sustainable alternative for eco-mobility. Since the improvement of internal combustion engine has reached a steady state point in terms of overall efficiency, the increasingly stringent requirements imposed by international normative standards are leading automotive companies to find other alternatives to reduce pollution. Thanks to the exponentially growth of power electronics, the huge interest on research of high energy and power density batteries and the more integration of the embedded systems, the central role of the electric drive has taken over on most of vehicles applications. The wide use of permanent magnets synchronous motors for electric vehicles application has rapidly spread out, thanks to their capability to provide high torque and efficiency with low weight and size. Since the natural behaviour of permanent magnets to demagnetize under severe conditions, both coupled thermal and magnetics, the necessity to understand and predict the phenomena is mandatory. This paper carries out a performance analysis in duty cycle, given by real CAN and GPS readings in a studied pathway, with discussion of numerical and graphic technical evaluations. Finite element software has also been used for coupled electromagnetic and thermal calculation to set the magnets working point and establish the temperature distribution within the motor itself during the whole thermal transient. A particular overview is done on the dependence of material used and different cooling solutions adopted.
The effect of immersion time on corrosion performance of the Al2O3-40TiO2 and WC-10Co-4Cr coatings in 3.5 wt.% NaCl solution
Authors: Jiang Lihe , Dai Weiwei , Wei Zheng , Huang Yunfeng , Wang Fangxuan , Hong Sheng 
Published: January 2022

Abstract
The Al2O3-40TiO2 and WC-10Co-4Cr coatings were fabricated by air plasma spraying (APS) and high velocity oxy-fuel (HVOF) spraying, respectively. The microstructure, corrosion resistance and eroded surface of the coatings were characterized. The effect of immersion time on corrosion behavior of the coatings in NaCl solution was investigated. Contrasting to the Al2O3-40TiO2 coating, the corrosion resistance of the WC-10Co-4Cr coating was still higher before 42 days of immersion. However, the corrosion resistance of the Al2O3-40TiO2 coating was higher than that of the WC-10Co-4Cr coating, when the immersion time reached 70 days. With the increase of immersion time, the galvanic corrosion accelerated the formation of pits and craters as well as decreased the corrosion resistance of the WC-10Co-4Cr coating. Meanwhile, corrosion products accumulated in the pits and promoted the stress cracking in the Al2O3-40TiO2 coating, which caused the fact that the corrosion resistance of the Al2O3-40TiO2 coating increased firstly and then decreased.
Surface properties of diamond wire sawn photovoltaic mc-Si wafers by stirred slurry pretreated and additive-free acid textured
Authors: Liu Runtao , Gao Yufei , Yang Chunfeng 
Published: January 2022

Abstract
Diamond wire saw cutting multi-crystalline silicon (mc-Si) wafers has the advantage of high cutting rate. However, it is difficult to follow the current additive-free wet acid etching process to prepare the anti-reflective textured surface due to the obvious saw marks on the surface of the as-sawn wafer. In response to this problem, this paper proposes a turbine-type stirred slurry pretreatment process to modify the surface of mc-Si wafers cut by diamond wire to make it suitable for the subsequent conventional wet acid texturing process. The experimental results show that the consistency of the surface structure of the mc-Si wafers can be effectively improved after turbine-type stirred slurry pretreatment by choosing suitable process parameters. The reflectivity of the pretreated mc-Si wafers after acid texturing is greatly reduced compared with that before processing, which can meet the production requirements of solar photovoltaic cells. Furthermore, based on ANSYS Workbench and Fluent, numerical simulation of the surface pretreatment process of large-size silicon wafers in practical industrial applications was carried out, and the uniformity of the surface modification treatment was analyzed. The research results provide ideas for promoting the adaptation of the diamond wire sawing of mc-Si silicon wafers to the acid wet texturing technology.