bluuebunny/crossref_metadata_2025_split huggingface dataset:
Development of an environmentally safe non-mechanized technology of the polluted forest areas reclamation
Authors: Grafova Elena , Syunev Vladimir 
Published: August 2023

Abstract
The inaccessibility of forest areas dictates the need to optimize the ways of their reclamation in case of pollution. The northern regions are highly vulnerable. To determine the degree of pollution, a variant of mapping the site with the determination of the degree of pollution was considered. Water sampling in the contaminated zone indicates intensive processes of decomposition organically exceeding the MPC. The penetration depth of contaminants is up to 95 cm. With prolonged exposure to organo-fat contaminants covering surfaces, death of vegetation and forest stands is noted. With distance from the source of pollution, the projective cover of some types of vegetation increases. 2 variants of reclamation are considered: mechanized and two-stage treatment directly at the site of pollution, carried out using additional aeration. Accelerated decomposition of contaminants up to 9 days at a dose of 15 g/l was confirmed. The results of the treatment is an increase in the pH of the medium from acidic to neutral. The height of the layer of organic surface contamination is reduced by 88% in 9 days when the mixture is aerated. The second stage is also confirmed by a decrease in the nitrogen concentration by 1.5–2 times, while the transparency of the solution increases by 2–2.5 times. The peculiarity of the revealed method of reclamation is a two-stage biodegradation, implemented directly in the natural environment without the use of machines and mechanisms. According to the results of a technical and economic comparison of the costs of the two reclamation options, the use of the new technology turned out to be 9 times cheaper, and the time costs are reduced by 2 times and can be 14 days, which is acceptable for the northern territories.
Functional zoning of urban areas (on the example of the city of Grozny)
Authors: Zaburaeva Kh Sh , Sh Ortsukhaeva Z , Zaburaev Ch Sh , Sedieva M B , Alibasov M L 
Published: August 2023

Abstract
The article substantiates the role of functional zoning of urbanized territories as a tool for analyzing the anthropogenic impact on natural landscapes, assessing the availability of socio-economic infrastructure, geo-environmental safety and rational use of natural and historical and cultural heritage sites. The conceptual and terminological base of research in domestic and foreign literature is disclosed. The features of the development of the territory of the city of Grozny over the past 30 years have been studied and cartographically visualized using the method of interpretation of space images. Correlations of various functional zones within the city territory are revealed. Recommendations have been developed for optimizing their correlation from geoecological positions for a more sustainable (balanced) development of the urban geosystem, improving the medical and environmental situation, creating comfortable conditions for the life and activities of citizens.
Hydrological characteristics of the Cheboksary and Kuibyshev reservoirs within the Cheboksary section of the Chuvash Republic
Authors: Ilyina A A , Nikonorova I V , Ilyin V N , Nikitina E A 
Published: August 2023

Abstract
The hydrodynamic zones of Cheboksary and Kuibyshev reservoirs are considered in the article. The results of the hydrological indicators of the field trip to the key sites of both reservoirs are presented, the degree of eutrophication of the Cheboksary and Kuibyshev reservoirs in the Cheboksary section of the Cheboksary district of the Chuvash Republic is studied.
Zoning of urban agglomeration based on the results of monitoring observations
Authors: Kustysheva I N , Gaevaya E V , Petuhova V S 
Published: August 2023

Abstract
In the article, the authors propose to carry out zoning of the urban agglomeration based on the results of monitoring observations from emissions from industrial enterprises located within the city boundaries. According to the adopted approach, the urban agglomeration is the main system that ensures the existence of the human community. It includes the air basin, land resources, water bodies, mineral resources, climate, landscapes, flora and fauna, and a number of other components. In the study, the authors propose to use the data of monitoring observations of atmospheric air to determine the territories subject to the greatest pollution. For this, areas of air pollution from industrial enterprises were calculated and built, and the zoning of the territory was carried out. The ecological characteristics of the city of Tyumen and the location of industrial enterprises as a factor of impact on the environment have been studied. A comparative analysis of the impact of pollutants emitted by enterprises on the residential area of the city is carried out and the areas of residential development that are most susceptible to chemical pollution are determined. Proposals have been developed to create comfortable environmental conditions for the population living in the territory located near industrial enterprises.
Germination and phytosanitary state of flax and wheat seeds after electron beam irradiation
Authors: Bliznyuk U A , Yu Borschegovskaya P , Chernyaev A P , Chulikova N S , Ipatova V S , Malyuga A A , Zubritskaya Ya V 
Published: August 2023

Abstract
Radiation technologies are widely used in agriculture to accelerate the sprouting of plants, increase crop yields, improve product quality, and destroy pathogenic microflora. This article assesses the effect of treatment with accelerated electrons in various doses on the germination of wheat and flax seeds, as well as on their phytosanitary state. It was established that the most efficient dose for flax variety Severny is 10 Gy, since this dose not only showed the most considerable increase in the germination rate by 38% but also decreased the number of fungi in seeds by 15 % and reduced the average diameter of the remaining colonies by 30% or more. For spring wheat variety Novosibirskaya 29, however, the doses which would be able to significantly reduce the number and the diameter of colonies without causing the inhibition of seed germination were not found.
Phytotoxicity and antioxidant activity of actinomycetes in soil ecosystems
Authors: Grigoryan L N , Bataeva Y V , Shaheen M , Novichenko O V , Fedotova A V , Yakovleva L V 
Published: August 2023

Abstract
The phytotoxicity, antioxidant activity and optical density of the actinomycetes strains Streptomyces carpaticus RCAM04697, Nocardiopsis umidischolae RCAM04882, Nocardiopsis umidischolae RCAM04883. The strains were isolated from the soil ecosystems of the arid zone and deposited in the Departmental Collection of Useful Microorganisms for Agricultural Purposes of the Federal State Budget Scientific Institution All-Russian Research Institute of Agriculture (Pushkin). The phylogenetic position of the strains was determined based on the 16S rRNA gene sequencing. These strains have pronounced insectoacaricidal, fungicidal and antiviral properties. The phytotoxicity of the suspensions and strain extracts were investigated at two concentrations: 0.5 mg/ml и 1.0 mg/ml. A spectrophotometric study was carried out in order to identify groups of dominant substances of metabolites of the studied strains. The analysis was carried out at wavelengths from 330 to 1000 nm, with a step of 10 nm. As a result of spectrophotometric analysis of all studied samples, the indicators of optical density (A) and light transmission (T) were analyzed. It was found that all versions of suspensions and extracts of the three strains are non-toxic, and the concentration 0.5 mg/ml proved to be more effective than concentration 1 mg/ml, which exhibits inhibitory properties. Suspension (88.8 %) and aqueous-alcoholic extract (76.0 %) of S. carpaticus RCAM04697 strain showed the highest antioxidant activity. In all the studied samples, a high antioxidant activity was revealed relative to the control. Spectrophotometric analysis of the studied samples made it possible to identify substances with the appropriate wavelengths that can be attributed to polyene antibiotics.
Structure of coal-bearing sections of swampy coastal-marine lowlands of the Kama coal basin in the territory of the Tatarstan
Authors: Korolev E A , Eskin A A , Korolev A E , Barieva E R , Khokhlova I V 
Published: August 2023

Abstract
The paper considers sections of the Visean coal-bearing formation of the Kama coal basin on the territory of the western slope of the South Tara arch. The sections are composed of coals, mudstones, siltstones, and sandstones, which were formed under continental conditions at the beginning of the Visean. The rocks of the coal-bearing formation were formed within the coastal shallow-marine plain with a lacustrine-marsh type of sedimentation. The formation of coals occurred during the formation of isolated swampy lakes on the surface of the floodplain lowlands. The source of organic matter was tree-like and herbaceous vegetation that develops in waterlogged lake water bodies in a hot, wet humid climate. According to the degree of coalification, coals belong to brown coals, their composition is dominated by a black, structureless, amorphous mass of coalified plant matter (fusen). As impurities, there are large fragments of plant remains belonging to the groups of intertinites and macerals. The coals are enriched in mineral, ash components, represented by kaolinite and finely dispersed quartz grains. Ash content will not exceed 20%.
Theoretical and experimental justification of tool parameters for soil moisture accumulation
Authors: Myalo V V , Myalo O V , Demchuk E V 
Published: August 2023

Abstract
The presented study is devoted to the rationale for the development of tools for the accumulation of moisture in the soil. Based on experimental studies, the paper presented the relationship between the quality of mail processing and the design and technological features of the tool, which makes it possible to ensure the accumulation of moisture in the soil. In the study, the authors developed an appropriate tool, presented its rationale and possibilities for use. At the end of the study, conclusions were drawn.
Impedance-based Identification of Strand Looseness in Multi-strand Anchorage under Temperature Effects
Authors: Dang Ngoc-Loi , Phan Ngoc-Tuong-Vy , Ngo Trung-Chanh , Truong My-Pham 
Published: August 2023

Abstract
In this study, strand looseness in a multi-strand anchorage is identified using measured impedance features of the PZT (Lead zirconate titanate) interface array under temperature effects. Firstly, a PZT-interface method for impedance monitoring in prestressed structures is briefly described. Secondly, a finite element model of multi-strand anchorage equipped with a PZT array is established to analyze the effects of prestress loss and temperature changes in impedance features. Thirdly, variations in simulated impedance signals are quantified using statistical damage metrics for damage detection in the analyzed structure. Last, a test on real-scale multi-strand anchorage is conducted to measure impedance signatures of the PZT interface under temperature fluctuation and prestress loss. The measured signals are then quantified using damage metrics for prestress looseness monitoring. The result reveals that environmental changes cause significant changes in PZT interfaces’ impedance features and affect strand looseness monitoring results.
Analytical study on flexural behavior of steel composite girder using truss element for shear connectors with different types and layouts
Authors: Rin Tran Van , Hai Nguyen Minh , Nam Phan Hoang 
Published: August 2023

Abstract
The key to improve the accuracy of behavior analysis of the steel composite girder lies in the reasonable modelling the intergration between the reinforced concrete slab and the steel girder. Based on design requirements and construction methods, the type and layout of the shear connectors between the concrete slab and the steel girder are different, significantly affecting the behavior of the composite girder. This study is conducted to (i) investigate the applicability of a truss element available in the popular simulation software Abaqus in modelling the shear connectors of composite girders, (ii) compare the flexural behavior of composite girders with different types and layouts of shear connectors. Two types of shear connectors considered in the study are headed studs and perfobond strips, and their layout corresponds to the construction methods using the cast-in-place and precast concrete slabs. The study results show that a truss element can be used to simulate the shear connector behavior through reasonable assignment of its shear force-slip relationship. With the design principle that the total shear capacity of the shear connector per unit length remains constant, the nonlinear behavior of the composite girder is significantly affected by the type and layout of the shear connectors.
Fragility-based effectiveness evaluation of reinforced concrete bridge piers strengthened with UHPC jackets
Authors: Nguyen Hoang Vinh , Nguyen Dang D Nam , Phan Hoang Nam , Nguyen Minh Hai , Nguyen Van My , Hoang Phuong Hoa , Pham Duy Hoa 
Published: August 2023

Abstract
The use of ultra-high-performance concrete (UHPC) jackets as a seismic strengthening method for reinforced concrete structures has become increasingly prevalent. Specifically, these jackets are applied to plastic hinge regions of the structures to improve overall earthquake resistance. This study evaluates the effectiveness of UHPC jackets in strengthening reinforced concrete columns through fragility curves. The columns are modeled numerically, accounting for material nonlinearity, and various strengthening scenarios, including those without UHPC jackets and with UHPC jackets of different heights, are modeled and validated with cyclic loading tests. Subsequently, a case study of a two-column reinforced concrete bridge pier is examined. Time-history dynamics analyses are conducted on 140 ground motion records to develop probabilistic seismic demand models of the column with different strengthening designs. Fragility curves obtained using the cloud method indicate a significant impact of the strengthening method on the failure probability of the column. The research findings presented in this paper provide engineers with a basis for selecting appropriate UHPC jacket parameters, including thickness, height, and material strength in a rational manner.
Seismic performance of multi-span continuous reinforced concrete bridges considering flood-induced scour effects
Authors: Vinh Nguyen Hoang , Nam Phan Hoang , Hoa Pham Duy , Hoa Hoang Phuong 
Published: August 2023

Abstract
Flood-induced scours near the pier foundation are an adverse phenomenon that may cause the collapse of bridges. However, in the seismic design of bridges, the scour impact is commonly ignored when evaluating the seismic response. This study aims to quantify the effect of flood-induced scours on nonlinear static and dynamic behaviors of typical reinforced concrete bridges. For this regard, three-dimensional finite element models of two- and three-span bridges with a multi-cell box girder, circular column bent, and extended pile-shaft foundation are first developed, where the column bent is modeled considering the material and geometry nonlinearity. The interaction between the soil and structure is also accounted for by using soil spring models. By considering different scour depths, the modal, static pushover, and dynamic time-history analyses of the bridges in both directions are investigated. It is observed from the modal analysis that the fundamental periods of the bridges increase with the increase of scour depth. In addition, the results in terms of the column drift ratio show that scour may increase the seismic damage to the bridges, which transfers damage from the column bent to the pile-shaft foundation. The findings of this study exhibit the significant effect of the scour on the seismic damage of reinforced concrete bridges; therefore, it is recommended that this phenomenon should be considered in the bridge seismic design.
Modeling and Mapping of Flood Susceptibility at Que Son District, Quang Nam Province, Vietnam using CatBoost
Authors: Phong Tran Van , Nguyen Duc Dam , Pham Binh Thai 
Published: August 2023

Abstract
In this research, the main objective is to model and map flood susceptibility in Que Son district, Quang Nam province, Vietnam using one of the effective machine learning model namely CatBoost. With this purpose, a total of 96 flood and non-flood locations and a set of 10 conditioning factors were collected to construct the geospatial database. Thereafter, Shap feature importance method was used to validate and select the most important conditioning factors used for modeling of flood susceptibility, and the results showed that only 8 conditioning factors including aspect, slope, curvature, elevation, land cover, rainfall, distance to rivers, and Topographic Wetness Index (TWI) were selected for final modelling of flood susceptibility at the study area. Validation of the model was also done using various statistical indexes including area under the ROC curve (AUC). Validation results showed that the performance of CatBoost model (AUC = 0.96 for training and AUC = 0.94 for testing) is good for prediction of flood susceptibility of the study area. Thus, it can be concluded that CatBoost is valuable tool for flood susceptibility modeling which can be used to assess flood susceptibility in other flood prone areas of the world. In addition, flood susceptibility map generated from CatBoost model in this study might be helpful in development of better flood mitigation strategies at the study area.
A standards-based approach to enhancing interoperability of low-cost industrial IoT flood sensors for transportation system resilience
Authors: Umeike Chibuike R , Guo Xiaoming , Dao Thang , Croope Silvana , Hong Xiaoyan , Johnston Alan T 
Published: August 2023

Abstract
Transportation infrastructure assets are particularly vulnerable to natural hazards, which are becoming more frequent and severe due to climate change and extreme weather conditions. Floods and flash floods are among the deadliest natural hazards, accounting for 50% of vehicle-related fatalities. This underscores the need for timely transportation flood detection systems adoption. However, current flood detection technologies are inadequate in terms of coverage, speed, geographical specificity, and interoperability, making it difficult for emergency managers to respond effectively to flood events. To address this issue, we propose a high-resolution network of low-cost Industrial Internet of Things (IIoT) sensing devices deployed at flood-prone transportation assets. These sensors collect location-specific data, which is then published in standardized formats, interfaces, and protocols, enabling other systems to generate flood forecasts, nowcasts, and warnings. A framework for Incident Management Systems (IMS) was also discussed to highlight the need for system interoperability during disaster management operations. Our solution employs standards-based interoperability, using the OIIE™ OpenO&M ecosystem architecture, to enable seamless interaction between interdependent systems and manages the risk to critical transportation infrastructure. The technology was tested at a microscale level to evaluate its performance. The model architecture supports scalable systems of systems interoperability for standardized use cases and common asset classes used in transportation, energy, facilities, and other critical infrastructure.
Axial and Flexural Performance of Discontinuously CFRP Strengthened Circularized and Square RC Columns
Authors: Mai A.D. , Sheikh M.N. , Hadi M.N.S. , Do H.T.G. 
Published: August 2023

Abstract
This study aims to evaluate the effect of the cross-section modification on the performance of square reinforced concrete (SRC) columns discontinuously strengthened with CFRP bands. In line with this research aim, the performance of SRC columns under eccentric and concentric compression was compared with that of circularized square RC (CSRC) columns. Six RC columns with 800 mm height including three SRC columns with 150 mm side length and three CSRC columns with 212 mm diameter were prepared and tested. The test results revealed that SRC columns achieved a substantial enhancement of strength and deformation by applying cross-section modification before strengthening with discontinuous CFRP bands. It was also found that SRC columns received a substantial improvement of deformation and considerable improvement of strength by strengthening with discontinuous CFRP bands.
An Assessment of the Algerian Trams and Subway Performance to Ensure an Efficient and a Sustainable Transport System
Authors: Khelf Mouloud 
Published: August 2023

Abstract
Since the beginning of the last decade, Algeria has given notable importance to sustainable transportation systems. The objective of this paper is to show the importance of two modern transportation means and to assess their operation. The methodology used in this work is based on the data recorded by the National Office of Statistics (ONS). The data analysis consists of two parts, the first part aims to show the importance of the subway and tram through an analysis of the passengers’ number who traveled by this two means in all cities. Then, the second part focuses on the Algiers subway and trams’ assessment by comparing the offered capacity and the passengers’ demand per year between 2017 and 2020. On the one hand, the results show that the number of users increased for the subway and trams except in 2020, due to the COVID-19 pandemic. On the other hand, the results show that the capacity offered for these two modes is high compared to the real passengers’ demand. This last finding can influence the sustainability criteria, especially for energy consumption. This contribution presents several recommendations for improving the subway and trams performance in Algeria.
A new approach to estimating link performance on Indonesian urban roads: deriving the BPR 1964 function
Authors: Rahman Aulia , Irawan Muhammad Zudhy , Amrozi Mukhammad Rizka Fahmi 
Published: August 2023

Abstract
Predictions of traffic volumes on road networks must be precise for transportation planning, and equilibrium trip assignment models based on the Volume Delay Function (VDF) are typically employed. In 1964, the U.S. Bureau of Public Roads (BPR) created a VDF widely used in many countries, including Indonesia. However, using capacity manuals from Western nations in Indonesia did not produce the desired results due to differences in traffic composition and driver behaviour. Using the Indonesian Highway Capacity Manual’s macroscopic fundamental diagram, this paper aims to derive a more accurate VDF for Indonesia. This method enables the development of a VDF tailored to the unique traffic conditions in Indonesia. It can enhance the precision of traffic volume forecasts in the region. The BPR function parameters tends to overestimate travel time delay, making the road network model flow misestimated. This is presumably caused by traffic count survey inability to record the build-up of traffic flow in the urban network during peak traffic periods.