bluuebunny/crossref_metadata_2025 huggingface dataset:
Investigation of the role of hydrogen molecules in 1D simulation of divertor detachment
Authors: Zhou Yulin , Dudson Benjamin , Militello Fulvio , Verhaegh Kevin , Myatra Omkar
Published: April 2022

The role of neutral and charged hydrogenic molecules in detached regimes of tokamak plasmas is investigated using a simplified 1D numerical model. Using MAST Upgrade like conditions, simulations are implemented to study the rollover of target flux

Γ

in upstream density scan. It is found that if

H

2

and

H

2

+

are considered in simulations a lower target temperature and a larger upstream density will be required to trigger divertor detachment under the same input power and particle flux, and the critical detachment threshold (the critical ratio of upstream static pressure to the power entering the recycling region) is found to be

p

up

P

recl

∼
8.1

N

M

W

−

1

at rollover. Molecule–plasma interactions are found to be as crucial as atom–plasma interactions during divertor detachment, both of which account for the majority of plasma momentum loss in the cases studied here. Further analysis of the momentum loss decomposition shows molecule-plasma elastic collisions dominate molecule-plasma interactions, while molecular charge exchange cannot effectively reduce plasma momentum. In terms of

H

alpha

emission, a strong rise of

H

alpha

signal is found to be due to molecular excitation channels when the upstream density further increases after rollover.
The effects of contact area on pressure sensing of ionic polymer metal composite sensor with a soft substrate
Authors: Wang Yanjie , Tang Gangqiang , Zhao Chun , Mei Dong , Zhao Xin , Ji Yujun , Li Bo
Published: April 2022

Ionic polymer metal composite (IPMC) has been extensively studied as a pressure sensor. Nevertheless, few works have focused on the size effects of external loadings on IPMC pressure sensing. Herein, we investigated the effects of contact area on pressure sensing of an IPMC sensor. By placing a soft substrate behind the IPMC, we enlarged the strain zone when IPMC was deformed. A series of experiments were carried out by changing the radius of loading. And the experimental results revealed that the signal generation of IPMC sensor depends on the compression and bending coupling effects, which even performed a reversal from negative to positive (from −0.184 mV to 0.102 mV) with the increase of the radius of loadings (from 1 mm to 4 mm). Combining the compression model and finite element simulation, we calculated the theoretical voltage and quantitatively compared the experimental results, which showed good consistency. It may provide a new and effective way to simplify the measurement of the contact area.
Superconductivity in Ti2O3 films on MgO substrate
Authors: Gantepogu Chandra Shekar , Ganesan Peramaiyan , Paul Tanmoy , Huang Chun-Hao , Chi Po-Wei , Wu Maw-Kuen
Published: April 2022

Transition metal oxide films exhibit strong structure-property correlations, which foster innovative physical properties that are not present in their bulk counterparts. This study has successfully prepared different thickness-dependent epitaxial Ti2O3 thin films on MgO (001) single crystal substrate using the pulsed laser deposition method. The results reveal a strong correlation between the crystal structure and superconductivity in Ti2O3 thin films. Synchrotron x-ray diffraction and high resolution transmission electron microscope measurements confirmed that the appearance of superconductivity is closely related to the coexistence of the cubic-Ti2O3 (γ-Ti2O3) and orthorhombic-Ti2O3 (o-Ti2O3) phases. Superconductivity is absent in 80 nm film, which exhibits only a single γ-Ti2O3 phase. The highest superconducting transition temperature (T
C) ∼ 7.2 K is achieved in 1200 nm film, which shows about 55% o-Ti2O3 phase and 45% γ-Ti2O3 phase. Room temperature Raman data suggest that E
g modes at ∼330 and ∼430 cm−1 may associate with superconductivity, and an E
g mode at ∼660 cm−1 is related to the insulating behavior observed in 80 nm film.
Optimally preserving quantum correlations and coherence with eternally non-Markovian dynamics
Authors: Miller Marek , Wu Kang-Da , Scalici Manfredi , Kołodyński Jan , Xiang Guo-Yong , Li Chuan-Feng , Guo Guang-Can , Streltsov Alexander
Published: April 2022

We demonstrate, both analytically and experimentally, the usefulness of non-Markovianity for preserving correlations and coherence in quantum systems. For this, we consider a broad class of qubit evolutions, having a decoherence matrix separated from zero for large times. While any such Markovian evolution leads to an exponential loss of correlations, non-Markovianity can help to preserve correlations even in the limit t → ∞. In fact, under general assumptions, eternally non-Markovian evolution naturally emerges as the one that allows for optimal preservation of quantum correlations. For covariant qubit evolutions, we also show that non-Markovianity can be used to preserve quantum coherence at all times, which is an important resource for quantum metrology. We explicitly demonstrate this effect experimentally with linear optics, by implementing the optimal non-Markovian quantum evolution.
Constraining time dependent dark matter signals from the Sun
Authors: Zakeri Mohammadreza , Zhou Yu-Feng
Published: April 2022

Dark matter (DM) particles captured by the Sun can produce
high-energy electrons outside the Sun through annihilating into
meta-stable mediators. The corresponding cosmic-ray electron signals
observed by the space-based experiments will be time dependent due
to the orbital motion of the space-based detectors. The shape of
this time dependence is predictable given the orbital information of
the detectors. Since the high-energy CR electron (with energy
E > 100 GeV) fluxes are expected to be constant in time,
non-observation of such time variation can be used to place upper
limits on the DM annihilation cross section. We analyze the time
dependence of dark matter cosmic-ray signals in three space-based
experiments: AMS-02, DAMPE and CALET. Under the assumption that no
time dependent signal is observed, we derive the 95% C.L. exclusion
limits on the signal strength from the current data. We map our
limits onto the parameter space of the dark photon model and find
that the constraints are comparable with that derived from the
supernova SN1987A.
Effects of relativistic parameter sets on tidal deformabilities and f-mode oscillations of neutron stars
Authors: Hong Bin , Mu Xue-Ling
Published: April 2022

The implications of relativistic parameter sets established at saturation density on the tidal deformabilities and f-mode oscillations of neutron stars (NSs) are examined using constraints from the gravitational wave (GW) event GW170817 and NICER. According to our findings, the isovector saturation parameters have a greater impact on the radii and tidal deformabilities of NSs than the isoscalar saturation parameters. Our analysis also examines the impact of saturation properties on f-mode frequencies and finds that f-mode frequencies with 1.4 M
⊙ (solar mass) are roughly between 1.95 and 2.15 kHz. These findings could be confirmed by future advanced GW detectors. A good linear parameter-independent correlation between f-mode frequencies inferred from saturation parameters in the entire region is also observed, and we attempt to fit an updated version of this universal relationship. Furthermore, we used chiral effective theory (χ
EFT) together with the multi-messenger astronomy constraints to further reinforce the rationality of the conclusions we have reached.
Focusing effects during ultrashort-pulse laser ablative generation of colloidal nanoparticles for antibacterial applications
Authors: Nastulyavichus Alena , Kudryashov Sergey , Ionin Andrey , Yushina Yulia , Semenova Anastasia , Gonchukov Sergey
Published: April 2022

Ultrashort (femto-picosecond) laser pulses with supercritical peak pulse powers undergo self-focusing and multiple filamentation during their propagation in transparent media. In this work, a comparative study of propagation and position-dependent ablation of a gold target in water by 0.3 ps and 10 ps 1030 nm laser pulses was performed. The filamentary laser propagation was visualized in water by the corresponding pre-focal plasma channels. The position-dependent ablative optical density yield of colloidal solutions and target mass loss along the filamentary tracks in water were characterized, for the first time enabling straightforward enhancement of colloidal generation for anti-bacterial, biomedical and nanophotonics applications.
SleepSEEG: automatic sleep scoring using intracranial EEG recordings only
Authors: von Ellenrieder Nicolás , Peter-Derex Laure , Gotman Jean , Frauscher Birgit
Published: April 2022

Objective. To perform automatic sleep scoring based only on intracranial electroencephalography (iEEG), without the need for scalp EEG), electrooculography (EOG) and electromyography (EMG), in order to study sleep, epilepsy, and their interaction. Approach. Data from 33 adult patients was used for development and training of the automatic scoring algorithm using both oscillatory and non-oscillatory spectral features. The first step consisted in unsupervised clustering of channels based on feature variability. For each cluster the classification was done in two steps, a multiclass tree followed by binary classification trees to distinguish the more challenging stage N1. The test data consisted in 11 patients, in whom the classification was done independently for each channel and then combined to get a single stage per epoch. Main results. An overall agreement of 78% was observed in the test set between the sleep scoring of the algorithm using iEEG alone and two human experts scoring based on scalp EEG, EOG and EMG. Balanced sensitivity and specificity were obtained for the different sleep stages. The performance was excellent for stages W, N2, and N3, and good for stage R, but with high variability across patients. The performance for the challenging stage N1 was poor, but at a similar level as for published algorithms based on scalp EEG. High confidence epochs in different stages (other than N1) can be identified with median per patient specificity >80%. Significance. The automatic algorithm can perform sleep scoring of long-term recordings of patients with intracranial electrodes undergoing presurgical evaluation in the absence of scalp EEG, EOG and EMG, which are normally required to define sleep stages but are difficult to use in the context of intracerebral studies. It also constitutes a valuable tool to generate hypotheses regarding local aspects of sleep, and will be significant for sleep evaluation in clinical epileptology and neuroscience research.
On the Variety Determination Model of Fighter Aircraft Carrying Spare Parts Kit
Authors: Li Hao , Guo Jing , Qiao Li , Xu Changkai , Liu Shenyang
Published: April 2022

In the performance of redeployment, rotation training, shooting, combat and other tasks, it is necessary to carry certain spare parts to support the fighter aircrafts. Reasonable configuration of carrying kit is an important subject of the aviation material support research. This paper, based on the five main indexes as the importance, failure rate, demand rate, economy and maintainability of the item to be carried, determines the weight of the evaluation index with entropy method, establishes the TOPSIS-Grey relational evaluation model, calculates and prioritizes the carrying degree of each item through examples. Results show that this model provides a scientific and practical method for determining the variety of carrying spare parts kit for fighter aircrafts.
A Tailoring Method between Random Vibration and Acoustic Test Based on Area-Mass Ratio for Satellite
Authors: Changxun Li , Tingfei Yan , Haiyang Gao , Chuang Liu , Shuhong Xiang , Guiqian Fang , Yicun Xie
Published: April 2022

Dynamic environmental tests for a spacecraft are essential in the development stage. In the series of dynamic tests, acoustic test and random vibration test are recognized as two effective spacecraft environmental qualification programs. The current standard and existing technical process for spacecraft indicate that acoustic test and random vibration generally should perform selectively. The vibration test shall be conducted for a small, compact spacecraft, typically with a mass under 450 kilograms, that can be excited more effectively via interface vibration than by an acoustic field. However, it seems inappropriate for complex structure satellites such as lightweight design, large area antenna, large mask camera. In this paper, a tailoring method of random vibration and acoustic test is proposed and verified by simulation analysis and test data.
Transient numerical simulation of flame combustion instabilities in a liquid-jet-fuel
Authors: Meng Nan , Li Feng , Jin Yehan
Published: April 2022

Liquid fuel jet combustion, which plays an important guiding role in the field of aviation, automotive, is widely used in engineering equipment. Therefore, this paper mainly conducts on the study of its combustion characteristics, which analyses the influence of transient numerical simulations of flame combustion instability on the flame combustion instability in a liquid-jet-fuel. In addition, the simulations are also adopted by the Favre-filtered conservation equations, including three dimensions mass, momentum and energy conservation equations. Moreover, the effects of different inlet velocities on flame height and flame flutter in the flow field shows unstable explicitly. In addition, the time from the beginning to the stabilization of the jet flame is analyzed by comparing the flame height and flame shape at different moments.
Research on Latching Current Limiter Circuit of Aerospace Power System
Authors: Duan Yonghui , Shen Ang , Wang Xinzheng , Xu Jie , He Jiaojiao
Published: April 2022

The input terminal of the aerospace power system is connected with surge suppression and overcurrent protection circuits. However, prior art methods have many demerits such as complex circuits, high surge currents, and slow response of overcurrent protection. Hence, this paper proposes a novel latching current limiter (LCL) circuit with both surge suppression and over-current protection functions. When over-current occurs, the circuit snap into the current limiting state within the adjustable time-delay period. When the over-current fault despairs during the time-delay period, the LCL circuit turns into the output lock state and rapidly lock down the output bus wire. Theoretical analysis of LCL circuit including the three operation states (i.e., the normal operation state, current limiting state and output lock state) and basic circuit equation derivation have been carried out. And the experimental platform is set up to validate the superior performance of the proposed LCL circuit. Results show that the proposed LCL circuit can effectively suppress the inrush current and sensitively respond the over-current fault of dc-link bus wire.
Reliability-based Design Optimization of Structures with Disturbed Design Variables and Dependent Uncertainties
Authors: Guan Bobin , Wan Min , Wu Xiangdong
Published: April 2022

To ensure the safety of engineering structures under disturbed design variables and dependent uncertainties, a new reliability-based design optimization method was proposed in this paper. The optimization model was firstly established by adding the additional constraints that considers the disturbance of design variables. Then, the multidimensional parallelepiped model was used to describe the uncertainties and to further process their correlation. Further, the structural reliability was analyzed by interval analysis and reliability-based possibility degree of interval model. Finally, the solving algorithm was constructed. Such the algorithm was applied to a numerical example and the structural design of augmented reality glasses, among which the former demonstrated the effectiveness of proposed algorithm in dealing with disturbance of design variables and correlation between uncertainties, while the latter showed the applicability of the algorithm in engineering structural design.
Preparation of 4,6-Dinitro-7-Oxygen-Benzofuraxan Sodium Salt (Nadnp) by “One-Pot” Method
Authors: Zhang Shixin , Xie Zhanfeng , Chen Likui , Dang Pengyang
Published: April 2022

4, 6-dinitro-7-oxygen-benzofuraxan sodium salt (NaDNP) was synthesized from 3-bromo-2, 4, 6-trinitroanisole and sodium azide by Substitution reaction and Cyclization reaction in water with an overall yield of 78%. Its structure was characterized by 1NMR, 13C NMR and IR, and its thermal properties were studied by Differential Scanning Calorimetry. The sensitivity performance was studied by impact sensitivity, flame sensitivity and electrostatic spark sensitivity. The results show that the DSC peak value of the sample is 282.45 °C under the protection of nitrogen when the heating rate is 10 °C / min. The impact sensitivity H50 is 38.2m, the flame sensitivity H50 is 13.6cm, and the electrostatic sensitivity E50 is 0.51J. Compare with LTNR, NaDNP is an insensitive new type of primary explosive.
A knowledge representation based recognition method on power grid alarm monitoring data
Authors: Xiaohui Pan , Yang Zhao , Guang Chen , Qing Fan
Published: April 2022

The identification of power grid monitoring and alarm information is an essential guarantee for the stable operation of the power grid. Identifying current power grid alarms is based on an expert rule system. This method has the problems of cumbersome rule matching, difficulty in maintaining the rule base, and low matching efficiency. In order to solve the above problems, this paper proposes a method of identifying power grid monitoring and warning information based on knowledge representation. The method first uses grid topology information to construct a knowledge graph. It then uses knowledge representation learning algorithms to represent the power knowledge graph which digitally represents the textual warning information, and finally uses a series of deep learning models to identify ”alarm-event.” This paper uses six algorithms, such as TransE for knowledge representation, combined with three deep learning models such as ConvLSTM for identification. The verification shows that this method has specific ”alarm-event” identification capabilities based on actual power grid monitoring data.
A Wind Farm Power Control Strategy for Dust Content in Wind Turbine Cabin
Authors: Wang Rujia , Yang Weifeng
Published: April 2022

To balance the benefit of dust content and the negative influence of fatigue load due to the wake flow effect in wind farms, a wind farm power control strategy for dust content in the wind turbine cabin is proposed and the fatigue load is also taken into account. A wind farm active power optimization control model is established by deriving the linear relationship between the active power of wind turbines, the wake flow fluctuation, the dust content in the cabin, and the fatigue load of wind turbines. Then, by coordinating the active power between wind turbines, the active power output requirement of wind farms is demanded, and the dust content and fatigue load can be effectively controlled. To verify the effectiveness of the proposed control strategy, an IEEE-RTS 79 test system is established in this paper, and wind farms will be controlled to participate in the system frequency regulation.
R&D of Relay Aging State Monitoring Device Based on Electromagnetic Signal
Authors: Tao Zhang , Haining Shi , Tang Tang , Tao Liu , Wei Wei , Yingjie Wang
Published: April 2022

Relays are the key components in the operation of nuclear power plants. There are many kinds, large quantity and high failure rate of relays in nuclear power plants, which are the difficulties in on-site maintenance and equipment management. There is no effective method and equipment to judge the aging state of relays on site, so only passive maintenance and replacement strategy can be adopted. The device developed in this paper uses space electromagnetic wave detection technology to monitor the aging status of relay on line, which provides a new way for the aging status evaluation and failure diagnosis of relay in service. The preliminary test results also show that the device has the potential to solve the key technology of relay maintenance activities in nuclear power field and realize relay aging management and predictive maintenance.
3D Cloud Rendering Visualization based on Nuclear Power Industrial Internet
Authors: Zhang Fan , Zhang Hao , Luo Ying , Xu Kui
Published: April 2022

Industrial Internet is a new generation of information and communication technology, which is a deep integration of industrial economy with new infrastructure, application mode and industrial ecology. As the development of nuclear power industry, it raises many demands on the use of industrial internet. China National Nuclear Power has been devoted to constructing the Nuclear Power Industrial Internet since 2018. Many of its business and process needs 3D visualizationto demonstrate the real-time operating data. Therefore, a cloud rendering technical proposal is designed to realize this purpose. The configuration and working flow of the cloud rendering are described in detail. Finally, a use-case is applied to verify the technical proposal. Some future work for improvement is given.
An efficient video transcoding algorithm from h.264 to hevc
Authors: Xin Longkun , Zhang Yang
Published: April 2022

Video transcoding method usually reduces coding complexity with the cost of reducing coding efficiency. It is necessary to design a video transcoder can achieve a better trade-off between coding efficiency and complexity. This paper proposes an efficient video transcoder based on improved rate distortion optimization and improved motion vector (MV) reuse. First, we use an improved temporal dependent rate distortion optimization method to implement rate-distortion optimization (RDO) at the level of Coding Tree Units (CTUs). Second, we use improved motion vector reuse (IMVR) to reduce the complexity of encoding. Experimental results have shown that the proposed method can achieve an average reduction of 38.4% in the transcoding time with the cost of 0.6% BDBR increase compared with HEVC Test Model (HM) 16.9 encoder. It verifies that the proposed method can achieve a better trade-off between coding efficiency and complexity compared with existing transcoding methods.
A Method of Attention Analysis on Video
Authors: Li Wanping , Wu Jiajie , Yin Kuiying , Jiang Guang , Yu Chao , Li Lanyu
Published: April 2022

Attention monitoring system is important for various tasks such as driving by alarming the person when he or she is not attending to the task at hand. Past research has not explored a usable attention monitoring system. In the current study, we used eye trackers, depth camera, and infrared cameras to assess the attention of the participants as they read texts. We extracted features from eye tracking and camera data, and then used convolutional neural network to predict the attention state of the participants. We found the eye tracker data yielded a 90% accuracy in predicting attentional state of the subjects. The camera data yielded over 70% accuracy in prediction.
Application prospect of time-sensitive network in airborne communication network
Authors: Dai Jun , Li Chunxiao , Wang Kenian , Zhao Changxiao
Published: April 2022

TSN (Time Sensitive Network) is a real-time Network communication technology being promoted by the international industry. It has the characteristics of more flexibility and high real-time performance. This paper firstly introduces the background of airborne network and real-time network. Then, TSN and the mainstream airborne communication network technology are compared and analyzed from the aspects of synchronization mechanism, scheduling strategy, redundancy and reliability mechanism. Finally, the prospect of TSN in the field of civil aviation is analyzed in general, which makes the application route of TSN in the airborne communication network more clear.
Research on the Application of Acoustic Simulation Based on iNoise in the Evaluation of Factory Boundary Noise
Authors: Wan Yupeng , Zhou Yuanbo , Yu Mingli , Yi Gaojun
Published: April 2022

The acoustic simulation platform iNoise is a simulation software released by Dutch DGMR company for industrial noise in recent years. So far, the research on the applicability verification of this simulation platform and the related research of this platform to guide the specific engineering quality have not been found in China. Taking the noise control project of a natural gas purification plant as an example, this paper makes a three-dimensional modeling and simulation analysis of the boundary noise of the plant by using the new platform. The applicability of the new acoustic simulation software has been preliminarily verified from the acceptance test results of this application case. In this project, the platform can realize the basic functions of the traditional noise simulation software. The platform can normally carry out noise reduction design and noise prediction and achieve ideal results.
Analysis of the Vorticity and Divergence Characteristics of Ocean Surface Currents During the Typhoon Period
Authors: Zhiben Shen , Jianwei Wu , Yun Wang , Liang Peng , Hong Yin
Published: April 2022

The analysis of the vorticity and divergence characteristics of ocean surface currents to the typhoon Lionrock is analyzed using six days’ currents data measured by high frequency surface wave radar (HFSWR) in the south-western Taiwan Straits. Analysis shows that significant changes of ocean surface currents are captured by HFSWR during the typhoon period. Nearly doubled vorticity and divergence values are induced by Lionrock. Strong anti-clockwise rotated vorticity values are observed during the typhoon period. And greatly strengthened positive divergence is also captured at the central observation area of the typhoon period.
Interference suppression based on the spatial and temporal characteristics of ocean surface current data
Authors: Zhiben Shen , Jianwei Wu , Haixiong Zhu , Liang Dong
Published: April 2022

A new interference suppression algorithm based on the spatial and temporal characteristics of ocean surface current data has been proposed in this paper. A three days’ ocean surface currents measured by two High Frequency Surface Wave Radar (HFSWR) systems located at Fujian Province is used to test the validity of the algorithm. The results show that interference suppression method proposed in this paper has effectively suppressed the interference signal, after interference suppression, the shape of the current field is well kept, and the mean RMS reduction is 6.88 cm/s, the max RMS reduction is 23.26 cm/s, the mean correlation coefficient promotion is 12.82%, the max correlation coefficient promotion is 64.04%.
Sideways crab-walking is faster and more efficient than forward walking for a hexapod robot
Authors: Chen Yang , Grezmak John E , Graf Nicole M , Daltorio Kathryn A
Published: April 2022

Articulated legs enable the selection of robot gaits, including walking in different directions such as forward or sideways. For longer distances, the best gaits might maximize velocity or minimize the cost of transport (COT). While animals often have morphology suited to walking either forward (like insects) or sideways (like crabs), hexapod robots often default to forward walking. In this paper, we compare forward walking with crab-like sideways walking. To do this, a simple gait design method is introduced for determining forward and sideways gaits with equivalent body heights and step heights. Specifically, the frequency and stride lengths are tuned within reasonable constraints to find gaits that represent a robot’s performance potential in terms of speed and energy cost. Experiments are performed in both dynamic simulation in Webots and a laboratory environment with our 18 degree-of-freedom hexapod robot, Sebastian. With the common three joint leg design, the results show that sideways walking is overall better (75% greater walking speed and 40% lower COT). The performance of sideways walking was better on both hard floors and granular media (dry play sand). This supports development of future crab-like walking robots for future applications. In future work, this approach may be used to develop nominal gaits without extensive optimization, and to explore whether the advantages of sideways walking persist for other hexapod designs.
Proposal for the Management of Solid Urban Waste Generated in Naranjillo, Capital of the District of Luyando, Perú
Authors: Daza E , Cruz A Da , Camargo S , Zavala S , Vargas L , Balbin N
Published: April 2022

To meet the objectives, the solid urban waste generated in Naranjillo is characterized and quantified and its adequate management is proposed. For this purpose, the methodology of the United Nations Urban Management Program, the calculation of the sanitary landfill through the guide for the design, construction, and operation of manual sanitary landfills, by Jorge Jaramillo, was used. The study determined 91.14% of usable solid waste and 8.86% of unusable solid waste whose final disposal should be in the sanitary landfill. 75.72% are organic waste that have the biological treatment in the composting plant; 15.42% of inorganic solid waste should be recycled through classification in the manual segregation plant, both components should enter the economic cycle. The volume of the landfill calculated until 2030 corresponds to 1555.80m 3 for a projected population of 4695 inhabitants in that year: with an urban solid waste production of 1575.86 Kg/day. The municipality of the district of Luyando by applying the proposed model of urban solid waste will improve the quality of life of its inhabitants by avoiding the contamination of water, soil, air, and the deterioration of the landscape.
Indoor Air Purification by Plants Experiment and Its Arithmetic Mean and Regression Analysis
Authors: Lin Chia-Hui
Published: April 2022

Plants can purify indoor air quality; in particular, plant transpiration can facilitate indoor air movement, purify air by removing pollutants effectively, and provide clean indoor air. In this study. The first and second stages mainly focused on selecting plants with superior performance in the indoor spaces. In the final stage, the effects of different arrangements of grow lights and air conditioners were investigated. The arithmetic mean and regression analysis results demonstrated that the plants illuminated with grow lights had superior performance. Plants that performed photosynthesis and transpiration simultaneously could lower the average temperature, increase indoor humidity (to make up for the lack of cold room humidity), and lower CO2 concentration. Our results demonstrated that placing plants together at a location across the air conditioner and under grow light illumination afforded the most effective indoor air purification and CO2 removal.
A method of plantation growing of fir and a device for planting it
Authors: Tsarev E M , Anisimov S E , Rukomojnikov K P , Gilyazova T A , Anisimov N S , Anisimov I S
Published: April 2022

The article deals with the creation of innovative technologies that ensure the rational use of natural resources in the forestry industry, in particular, the technology of plantation artificial reproduction of fir trees. A methodological approach to the design of fir plantations for sustainable forest management in the production of fir oil has been developed. The aim of the work is to solve problematic issues of procurement of raw materials for the production of fir oil and other products of processing of fir boughs. A rational sequence for the development of forest areas and the design of a device for planting containerized fir seedlings are proposed.
Studying the possibility of using fruit wood in the production of Russian Calvados
Authors: Kachaeva N Y , Stribizheva L I , Morozov I N
Published: April 2022

The traditional technology for obtaining aged Calvados involves the use of oak wood for aging. However, this entails a significant student cost of the product. Based on this, it is of interest to search and study the possibility of using “variegated” wood in the form of chips or staves. The obtained results of the study make it possible to unequivocally assess the prospects for the use of apple, cherry and hazelnut wood.
Carbon saving agricultural technologies and mitigation of the greenhouse
Authors: Korchagin A A , Petrosyan R D , Shilov P M , Shchukin I M , Baranov S G
Published: April 2022

The paper generalizes and analysis the data of soil organic carbon (SOC) amount in agricultural land on the example of the field studies carried out in 2013–2016 on the area of the Upper Volga Federal Agrarian Research Centre on the gray forest soils. The purpose of the study was to determine the stocks and the losses SOC in the agricultural land; to evaluate the factors reducing SOC in the arable soils and to show the ways to maintain and to increase the soil organic carbon; to study the influence of the technological factors on the balance of organic carbon in gray forest soils. Authors consider the transition to carbon-saving technologies of arable soils in Russia can restore almost 2.2 Gt C of the SOC and can play a significant role in the reducing of the CO2 concentration in the atmosphere. This SOC value can be a significant additional reserve for achieving Russia’s commitments on mitigating climate change. The result of the field experiment showed the most effective approach is the choice of agricultural crops, as the perennial grasses using the manure as an organic fertilizer and the use of resource-saving non-moldboard tillage methods.
Winter wheat of the VIR collection in the Middle Cis-Ural region
Authors: Torbina I V
Published: April 2022

The aim of the study was to identify the sources of economically useful traits of winter wheat from the collection of the Federal State Budgetary Scientific Institution “Federal Research Center All-Russian Institute of Plant Genetic Resources N.I. Vavilov ”(VIR) for adaptive breeding of this crop in the Middle Cis-Ural region. Highly productive varieties Harvard (k-66051 USA), Rasad (k-66087 Kazakhstan), Augusta (k-63929 Rostov region), Dominanta (k-64620 Rostov region) and AC Buteo (k-66054 Canada) were the most adaptive according to the method of L.A. Zhivotkova, Z.A. Morozova, L.I. Sekatueva (1994). But they were characterized by significant yield variability (V=36-130 %). Varieties Nastya (k-65675 Stavropol), WA007970 (k-66043 USA), AC Buteo, PA8769-158 (k-65943 USA), Ransom (k-65236 USA) and Farnum (k-65944 USA) showed high homeostaticity (Hom = 1.8-24.7). These varieties were the most productive and stable also according to the method of E.D. Nettevich, A.I. Morgunova, M.I. Maksimenko (1985). Varieties AC Buteo (6), WA007970 (15), PA8769-158 (16), Farnum (21), Ransom (21), Nastya (22) were distinguished by the sum of ranks; the sum of the ranks of the standard Moskovskaya 39 was 22. Sources of increased grain size (weight of 1000 grains 41.2-54.0 g) were identified - varieties Nemchinovskaya 17 (k-65756), Harvard, Rasad, Nureke (k-66088), Alija (k-66089), Avesta (k- 64491), Agra (k-64492), Shestopalivka (k-65060); grain content of a ear (30.9-47.3 pcs.) - Dzhangal (k-65610), Slavitsa (k-65656), Nastya, Alija. High grain glassiness of 90-100% for two years of study (2019-2020) was obtained in varieties Nastya, Farnum, WA007970, AC Buteo and Ransom.
Models for assessment of agricultural and processed products of agricultural complex
Authors: Muhamediyeva D T , Fozilova M M , Tukhtamurodov N
Published: April 2022

The main scientific problem is the definition of a strategy for the stable development of agriculture and the deepening of economic reforms in the conditions of market relations. The paper considers models for assessing agricultural and processed products, taking into account the demand of the domestic and foreign markets of the agro-industrial complex. The ability to study the consequences of decisions made using a simulation system is one of its main advantages.
Regional analysis of the energy potential of woody agrobiomass for sustainable rural development
Authors: Andreenko T I , Rafikova Yu Yu
Published: April 2022

The paper presents estimation of biomass energy potential from the annual pruning of vines and fruit trees in the orchards of the Kabardino-Balkarian Republic. The calculations were carried out with the authors methodology, based on the international experience in this area. The results are presented with the use of geoinformational technologies as a part of geoinformational system «Renewable Energy Sources of Russia». It is shown that the energy content and technical electrical and heat energy potential of the perennial agricultural plantations cultivation wastes of grapes and fruits have a significant value for a number of territories of the Kabardino-Balkarian Republic. The authors propose, that this potential is a significant base for the development of bioenergy and bioeconomy in the region.
Applied preventive technologies that ensure environmental safety and environmental protection
Authors: Provodina E V , Yu Krasovskaya O , Sergeenko Yu S , Gerasimova T A , Zaitseva O V
Published: April 2022

The conducted research is aimed at the formation of preventive technologies that ensure environmental safety in connection with the functioning of fuel and energy complex facilities. A feature of these technologies is their formation on the basis of problems identified as a result of studying the existing actual relations to prevent environmental pollution in this area. Thus, the basis of the proposed preventive technologies is actually existing relations for prevention in the field of ensuring environmental protection in this direction, and not the regulatory and legal provisions, which are most often subject to change. The results obtained in the form of conclusions and suggestions are based on the existing difficulties of preventive relations, related, among other things, to the lack of legal regulation, contribute to the streamlining and optimization of activities in the field of environmental safety, which predetermines the practical and theoretical significance of the study. The study contains the concept, structure and classification of preventive technologies based on practical methodology aimed at solving practical problems and tasks, including a set of specific methods, techniques and rules differentiated by the subject of preventive impact.
Geochemical features of the impact of the Gayskoye copper pyrite deposit on the environment
Authors: Artamonova S V , Kudelina I V , Leontyeva T V , Fatyunina M V , Petrishchev V P
Published: April 2022

The eastern part of the Orenburg region is the largest center of the mining and processing industry of non-ferrous metals in the Ural region. The most significant are copper pyrite deposits containing ores of various chemical compositions. As a result of the study, it was found that in the area of development of the Gayskoye deposit, geochemical halos are developed around ore bodies in the rocks of the Paleozoic, Meso-Cenozoic and weathering crusts. Landscape-geochemical conditions contribute to the wide migration of ore elements and their accumulation in various environments - soils, groundwater, vegetation. Elevated contents of all ore elements are observed, many of them exceed the MAC, Pb, Cu, Zn, As should be attributed to ecologically hazardous elements.
Yield and quality of cheese from milk of cows of different genotypes by halloumi technology
Authors: Shchegolkov N F , Zakharov V L , Zubkova T V , Volokhov I M
Published: April 2022

The purpose of the research was to carry out a comparative assessment of the quality of grilled cheese (halloumi) obtained from the milk of cows of three genotypes. The cheese was prepared according to the Cypriot halloumi technology, but instead of sheep or goat milk, they used cattle milk. The milk of red-mottled cows differed from the milk of other breeds with a higher content of skimmed milk solids, protein and fat. Grilled cheese made from milk of cows of all genotypes, manufactured using hallumi technology, meets the requirements of GOST R 52686-2006 and is bold (Simmental cows) or fat (black-mottled and red-mottled breeds). Grilled cheese made using hallumi technology from the milk of red-mottled cows has an average moisture content, an average density, a higher yield and is more saturated with lactic acid than cheese from the milk of Simmental and black-mottled breeds. Halloumi grilled cheese made from milk of cows of all three genotypes is suitable for roasting within 6 days from the date of production.
Assessment of the integrated palinotoxic effect of ecotoxicants on microhametophyte Vitis vinifera L.
Authors: Ibragimova E E , Manankova O P
Published: April 2022

The article presents information of the study of the complex effects of heavy metals and residual dose of pesticides on the male generative organs of populations of Vitis vinifera L. growing in agricultural areas of Crimea with varying degrees of pollution and located along highways with different road traffic. The control possibility is populations growing up on plantations which located at a considerable distance from highways. In the soil samples of these areas, residual amounts of pesticides (baileton, BI-58, insegar) were found, the content of which didn’t exceed the established sanitary and hygienic standards. A microgametophyte test of V. vinifera L. populations growing in agricultural areas whose soils are contaminated with heavy metals and pesticide residues revealed reduced production of fertile pollen compared to the control zone and background, significantly decreasing with increasing concentrations of ecotoxicants. Morphometric analysis of abortive pollen grains revealed an increase in their size, with the largest number found in more polluted areas. Increased production of large sterile pollen may indicate an adverse effect of heavy metals and pesticides on the generative organs of grapes and microsporogenesis occurring in them. It was found that pollutants in the background and in the Bakhchisarai district (low load) had a mildly toxic effect, in Alushta (medium load) and Simferopol district (high load) – a medium toxic effect of microgametophyte V. vinifera L. Thus, heavy metals and pesticide residues can form more toxic combine.
Evaluation of the effectiveness of the use of humic biofertilizer in the cultivation of soybeans in conditions of unstable moisture
Authors: Yurina T A , Belik M A , Ermakov A A
Published: April 2022

The results of field studies to assess the effectiveness of the use of humic biofertilizer “AgroVerm” in the technology of cultivation of soybeans of the zoned variety “Vilana” in the treatment of seeds and crops in the zone of unstable moisture are presented. It has been established that, on average, over the years of research (2017-2020), the use of biofertilizer in various variations of its application increases the stress resistance of soybean plants to adverse climatic factors, promotes the intensive formation of nodules on the roots of plants (on average, by 8 more options). an increase in the number of beans per plant (from 1 to 3 pcs.) and the weight of 1000 seeds (from 4.5 to 7.8 g), and also increases the yield of soybean seeds from 2.0 to 2.3 q/ha.
Land fund and its use in agricultural production in the Russian Federation
Authors: Kozyrev B A , Tsoraeva E N , Zh Basieva L , Hugaeva L M
Published: April 2022

The Russian Federation has a huge agricultural potential, possessing one of the world’s most valuable natural resources - agricultural land. Availability and efficient production. The use of land resources plays a major role in agriculture, it is important to study the current situation of changes in the area of land resources in the Russian Federation using a retrospective analysis. A retrospective analysis of the use of the land fund of the Russian Federation was carried out. A retrospective analysis allows us to conclude that during the analyzed period there was a significant reduction in arable land and other agricultural land.
Improvement of the soil pollution monitoring system
Authors: Grafkina M V , Pitryuk A V
Published: April 2022

The Russian Federation has established a fairly effective system of environmental monitoring, including soil pollution with industrial toxicants and pesticides. The results of environmental monitoring are included in stock materials reflecting the state of the environment. First of all, they include the yearbooks of the Federal Service for Hydrometeorology and Environmental Monitoring of the Russian Federation. Environmental monitoring data make it possible to identify the level of soil pollution in various regions, formulate recommendations on the state of soil pollution and the possibility of their use in agriculture, and are also the basis for justifying the choice of new territories for newly planned economic activities. Analysis of the composition of stock data on soil pollution to assess the level of pollution, identify certain patterns of modeling and forecasting changes in the trend of anthropogenic impact on soils is an important scientific problem. The purpose of this study is to analyze the composition of data on monitoring soil pollution with heavy metals and pesticides in order to identify certain patterns, conduct modeling and forecasting, and develop recommendations to improve the effectiveness of environmental monitoring.
Modeling the prediction of contamination of an area by the example of the Bhopal accident
Authors: Antonova O M , Tikhomirova E I , Chernetsov A S , Shamin A O , Leonova M A
Published: April 2022

A prediction of the scale of methyl isocyanate contamination in the accident in Bhopal has been made (determination of the depth and area of the toxic substance contamination zone) The duration of the damaging action of methyl isocyanate – 0.08 hours (5 min); the equivalent quantity of methyl isocyanate (Qe1) in the primary cloud – 1.75 t; the equivalent quantity of methyl isocyanate (Qe2) in the secondary cloud – 385.36 t has been calculated. The depth of the contamination zone (D) in the primary cloud was determined at 2.84 km, and in the secondary cloud at 87.79 km. It is established that the total depth of the contamination zone is 89.21 km, the area of the actual contamination zone is 699.08 km2. Calculated numbers of fatalities in the first day was 4817, compared to the real number of 5000. The prediction error was 4%.
Investigation of the chemical composition of the leaves of saxifrage columnar and saxifrage Dinnikii
Authors: Kvashin V A , Tsakhkhaeva Z S , Shamarina M A , Kh Tlakadugova M
Published: April 2022

The chemical composition of plants is very diverse and includes a large number of biologically active substances, the combination of which determines the pharmacological activity. The article investigates the phytochemical composition of the leaves of saxifrage columnar and saxifrage Dinnikii. It was found that the studied objects contain glycyrrhizin acid, peucedanin, flavonoids, phloroglucides, and tannins. The studied plants can be treated as a new type of plant raw materials, promising for further research.
Evaluation of the modern lupine varieties developed in the All-Russian Lupin Scientific Research Institute
Authors: Yagovenko G L , Lukashevich M I , Ageeva P A , Novik N V , Misnikova N V
Published: April 2022

The article presents the researches of the Institute within the frame of the breeding program for three cultivated lupine species: Lupinus albus L., Lupinus angustifolius L. and Lupinus luteus L. The authors analyze and compare the modern varieties of the cultivated lupine species included to the State Register of Breeding Achievements of Russia for the complex of economic-and-biological characters. The narrow-leafed lupine is the most early ripening; it allows to grow it in the most northern regions. The yellow lupine is the most adapted to light sandy loam soils. Its protein content in seeds is 45-50%. The white lupine has the highest grain productivity (5-6 t/ha) among grain legumes crops. Its grain quality is close to soya one (protein and oil content is 36-40% and 9-12% respectively).