Stroitel''stvo Nauka i Obrazovanie最新文献

{"title":"A hybrid technology for wastewater treatment at dyeing and finishing facilities","authors":"S. Timofeeva, M. S. Tepina, S. Timofeev, D. Ulrikh","doi":"10.22227/2305-5502.2022.2.7","DOIUrl":"https://doi.org/10.22227/2305-5502.2022.2.7","url":null,"abstract":"Introduction. Nowadays people tend to follow fashion trends and wear clothes made of brightly coloured fabrics and furs. Their production requires a large set of chemical reagents, including dyes, tanning agents, surfactants, etc. Multicomponent wastewater with changeable composition is generated following the completion of the dyeing cycle and the treatment of materials. Their further processing requires advanced innovative approaches, most of which are integrative. Wastewater treatment technologies, used by dyeing and finishing facilities, are analyzed in the article. The authors present the results of the laboratory research into the development of an integrative technology for dye extraction from wastewater using a composite sorbent obtained by pelletizing dust wastes of the metallurgical industry and supplementary phytoextraction of dyes in bio-ponds. Materials and methods. The research was conducted in the laboratory environment. The technology entails the use of a composite porous material, made of man-made raw materials used in the production of silicon and aluminum. A pelleti­zing technique, proposed by the authors, is employed to make this composite material. The sorbent production technique, its characteristics and evaluation of sorption properties are presented. The phyto-sorption properties of aquatic plants were tested in the laboratory environment. Aquatic plants, growing in the Angara river, were used in the research. Plants were collected by trawl, freed from soil, washed, and grown in the laboratory aquariums filled with dechlorinated water in conditions of moderate lighting and at the temperature of 14–16 °С. They are Elodea canadensis, Myriophyllum spicatum, and Ceratophyllum demersum. The model wastewater was represented by dye solutions, such as C.I. Acid Yellow 11, C.I. Acid Blue 120, C.I. Acid Red 1, C.I. Basic Orange 21. Results. The newly developed technology of making a composite sorbent from waste is described; its treatment efficiency is analyzed. Experimental values of the phytoremediation potential of aquatic plants are obtained. A hybrid technology for local wastewater treatment, including sorption and phyto-treatment, involving gabions and biological ponds, is proposed. Wastewater is treated in gabions filled with composite sorbent and then poured into bio-ponds with aquatic plants. Conclusions. The findings enable researchers to outline areas of further research on optimization of integrated facilities, designated for the local treatment of wastewater, generated by dyeing and finishing facilities.","PeriodicalId":30543,"journal":{"name":"Stroitel''stvo Nauka i Obrazovanie","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77524229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The life cycle assessment of smart sustainable cities","authors":"Vitalii Balalov, T. Barabanova","doi":"10.22227/2305-5502.2022.2.6","DOIUrl":"https://doi.org/10.22227/2305-5502.2022.2.6","url":null,"abstract":"Introduction. The problem of the life cycle-based assessment of cities (LC), involving systems of indicators for a smart sustainable city, is relevant. The objectives of the study include the review and analysis of existing LC-based methods in construction, housing and utilities sector (HUS), the review and analysis of systems of indicators, evaluation frameworks, benchmarking systems that exist both in the format of standards and are proposed as research developments, the review of the software used for the assessment of the LC of facilities in construction and HUS, the review of open-access databases for the LC assessment of construction and HUS, drafting a thematic plan for the training course “Life Cycle Assessment for Sustainable Cities”. Materials and methods. Research articles in indexed journals, standards, guidelines, and specifications were used. The search was performed using the following databases: eLIBRARY.RU, Google Scholar, Scopus, ScienceDirect, ISI Web of Knowledge, researchgate.net, standards.ru, iso.org, shop.bsigroup.com. The key words, used to search for the information, include life cycle assessment (LCA), smart sustainable cities, city assessment, sustainability assessment, environmental assessment, environmental impact, sustainability indicators, construction, housing and utilities sector (HUS). Results. A sample thematic plan for the training course titled “The life cycle assessment of sustainable cities” was developed on the basis of the analysis of the sources and the systematization of the information thus obtained. Conclusions. The research and its results show that the problem of LC-based assessment of cities, involving the use of indicator systems for smart sustainable cities, has many solutions. The goal, which was to accumulate, analyze and use the information in the training course, has been achieved. Of particular practical interest are the LCA software tools available in construction and HUS. Of great importance for the LCA are open-access databases focused on construction and HUS.","PeriodicalId":30543,"journal":{"name":"Stroitel''stvo Nauka i Obrazovanie","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83231305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prevention of secondary pollution of drinking water in water supply networks made of metals","authors":"O. Prodous, D. Shlychkov, Dmitriy Spitsov","doi":"10.22227/2305-5502.2022.2.5","DOIUrl":"https://doi.org/10.22227/2305-5502.2022.2.5","url":null,"abstract":"Introduction. The requirements of current regulatory documents guarantee the quality of drinking water leaving water treatment facilities (WTF). Hence, the water, coming into water supply networks, made of steel and cast iron pipes, made of gray-cast iron, is transported to consumers. Its quality must meet the standards of GOST R (Russian National Standard) 51232-98 “Drinking water” and SanPiN (Sanitary Regulations and Norms) 1.2.3685-21 “Hygienic standards and requirements to ensure the safety and (or) harmlessness of habitat factors for people”. The aim of the study is to analyze methods of preventing secondary pollution of drinking water in water supply networks, made of metal, and to identify the most effective and practically grounded method. Materials and methods. The concepts of electrochemical corrosion and microbiological corrosion of the inner surface of pipes were used to perform the analysis. Three methods of preventing the formation of a layer of deposits on the inner surface of steel and gray cast-iron pipes are used in the practice of water treatment and disinfection of drinking water: the method of using strong oxidants, such as chlorine and sodium hypochlorite, for the disinfection of drinking water; the method of increasing the pH level of drinking water; the method of using chemicals to ensure the formation of a microscopic film on the surface of layers of deposits to “slow down” electrochemical and microbiological corrosion processes on the inner surface of pipes. Results. The authors have identified a method for preventing the secondary pollution of drinking water, time-tested by the twelve years of practical use by the operator of WTF and drinking water supply and distribution networks made of metal. Conclusions. The effectiveness of the method of preventing the secondary pollution of drinking water through the use of new generation reagents, made of polyhexamethyleneguanidine hydrochloride, has been proven in practice.","PeriodicalId":30543,"journal":{"name":"Stroitel''stvo Nauka i Obrazovanie","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82409314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The analysis of fatigue resistance of bridge structures made of aluminum alloys","authors":"A. Korgin","doi":"10.22227/2305-5502.2022.2.3","DOIUrl":"https://doi.org/10.22227/2305-5502.2022.2.3","url":null,"abstract":"Introduction. The author has developed a method for the fatigue resistance analysis of bridge structures made of aluminum alloys subjected to polycyclic loading. The author suggests that this method should be introduced into the currently enhanced regulatory documentation focused on the analysis of highway bridges made of aluminum alloys. Materials and methods. The method is based on the results of integrated laboratory testing of a number of aluminum alloys 1915T, AD35 T1, 1565hM, EN AW-6082 T6 that have good prospects in terms of the production of bridge structures. Physical-mechanical and fatigue characteristics were identified in the course of the static testing of specimens of these alloys before the fatigue cracking at different values of the cycle asymmetry coefficient. The theoretical fundamentals of the method stem from the domestic research on the fatigue resistance analysis of steel structures and foreign regulatory materials on the fatigue resistance analysis of bridge structures made of aluminum alloys. Results. The reliability of the new method was verified in the course of static and fatigue testing of a full-scale pedestrian bridge made of 1915T alloy and orthotropic plates made of EN AW-6082 T6 alloy, designed by NRU MGSU and manufactured by the Russian plants GS-Reserve, KraMZ and Sespel using advanced innovative technologies of extrusion and friction stir welding. Discrepancies between the experimental findings and the results of the analysis, made pursuant to the proposed methodology, are within 5–20 %. Conclusions. The proposed method can also be applied to other types of structures made of aluminum alloys, such as tanks, pipelines, high-rise structures, and other items that are subject to multiple cyclic effects.","PeriodicalId":30543,"journal":{"name":"Stroitel''stvo Nauka i Obrazovanie","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87376332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aeration of buildings on difficult terrains","authors":"Kim Dmitry A.","doi":"10.22227/2305-5502.2022.2.2","DOIUrl":"https://doi.org/10.22227/2305-5502.2022.2.2","url":null,"abstract":"Introduction. It is necessary to learn the wind speed distribution and its impact on facades to study the aeration characteristics of a built-up area. An important task is to assess an increase in the heat loss from a building. In addition, the building itself, its shape and location have a significant impact on the nature of the air flow. The wind speed and direction change near a building; there is strong eddying around it, depending on the shape in plan and the volumetric-spatial solution. A built-up area, accommodating different layouts of buildings, also affects the nature of the air flow. Materials and methods. Methods of theoretical, field studies of the aeration of buildings were adopted to identify the influence of different terrains on the nature of air flows. Domestic and foreign methods of scientific research have been analyzed. The methodology that allows predicting the aeration pattern in curtilages has been developed. Results. Approaches to the problem of improving the environment in terms of studying methods of aerodynamic calculations, used in structural aerodynamics, are considered. The purposeful statement of theoretical and experimental researches, focused on developing an effective method for the calculation of natural aeration of buildings is outlined. The intensity of air exchange between indoor and outdoor environments under the wind pressure, wind loads on buildings, aeration of premises, heat losses from infiltration, or air leakage through enclosing structures were identified. The designed model, simulating the formation of a circulation zone for various dimensions of buildings, wind flow velocities, and slope steepness values allows projecting the aeration in curtilages. Conclusions. The proposed calculation method can be used to project the aeration in curtilages and identify windless regions on the windward side of a building; it is also possible to identify the amount of air flowing in and out through the opposite windward and windward openings in the walls of buildings when they are located in the windward side of a mountain, the aeration of rooms, wind loads on buildings, and heat losses from infiltration.","PeriodicalId":30543,"journal":{"name":"Stroitel''stvo Nauka i Obrazovanie","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82344824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Numerical calculation of steel-concrete structures","authors":"A. Tusnin","doi":"10.22227/2305-5502.2022.1.5","DOIUrl":"https://doi.org/10.22227/2305-5502.2022.1.5","url":null,"abstract":"Introduction. Steel-concrete structures are composite systems composed of steel beams and a reinforced concrete slab. The reliable transfer of shear forces between the beam and the slab is required for the structure to behave efficiently. Towards this end, anchoring devices are used to ensure a connection between the beam and the slab. The design of a steel-concrete beam, composed of a reinforced concrete slab and steel beams, having bent sections, is considered. The steel-concrete beam is a system of galvanized bent steel beams placed in parallel and partially embedded in the 90 mm thick concrete slab made of B25 concrete. Shear forces are transmitted due to adhesion between galvanized steel and concrete without anchoring devices or the additional treatment of the beam surface. Materials and methods. The samples, whose flat galvanized plate had been embedded in concrete, were tested to identify actual adhesion forces. Finite element models (FEM), developed using various software packages, were assessed. FEM parameters that ensured the accuracy, acceptable for practical use, were identified. Results. The strength of adhesion between the steel plate and concrete was experimentally identified for different options of its attachment to concrete. The mesh pattern was identified for the plate for the case when 3D finite elements were used. Conclusions. A steel-concrete beam with a span of 6–8 m, bent galvanized sections partially embedded in the reinforced concrete slab with a thickness of 90 mm was developed. The author experimentally identified the shear resistance of a galvanized steel plate embedded in concrete, which reached 0.248 to 0.415 MPa depending on how the surface of the steel plate embedded in concrete was prepared. Numerical models were tested using different computational packages designa­ted for the calculation of steel-reinforced concrete beams. The author suggests FEM improvements on the basis of numerical calculation methods applied with due regard for the experimental data obtained during the testing of the full-scale structure.","PeriodicalId":30543,"journal":{"name":"Stroitel''stvo Nauka i Obrazovanie","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84865689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Legislative and scientific aspects of selecting general contractors for construction work on capital construction projects","authors":"A. Reshetova","doi":"10.22227/2305-5502.2022.1.3","DOIUrl":"https://doi.org/10.22227/2305-5502.2022.1.3","url":null,"abstract":"Introduction. The author addresses the choice of corporate general contractors participating in bidding for the construction of capital construction projects (CCP). The criteria evaluation pattern, employed by the customer pursuant to the effective legislation of the Russian Federation, is presented. The author has studied the criteria evaluation mechanism, applied to corporate general contractors in the course of implementation by the customer of the procurement procedure for the construction of facilities. Materials and methods. Legislative and subordinate acts, results of scientific research have been analyzed. The author has analyzed the process of tendering for public procurement contracts on the performance of work on the construction of capital construction facilities. Criteria evaluation problems, arising in the process of selecting general contractors, were identified. The benchmarking method was proposed to assess corporate general contractors. Results. Factors, influencing the quality of construction work, were presented. The author suggests consolidating them into a system of evaluation criteria and integrated into the “quality of construction work” criterion in the effective legislation. In addition, it is necessary to evaluate any procurement procedure for construction work using such parameters as “the qualification of the bidder”, “financial resources, equipment and other material resources of the organization”. Conclusions. Thanks to the proposed system of evaluation criteria, the mechanism of selecting general contractors will be more distinct, comprehensible and transparent. The system of criteria selection and evaluation, applicable to construction companies, should be simple and comprehensible not only by the customer, but also by the contractor. It is advisable to avoid using numerous mathematical formulas to calculate the rating of general contractors. Further relevant areas of research have been formulated, including the evaluation of qualitative components of assessment criteria applied to construction organizations and the issuance of their quantitative characteristic (weight significance) using the method of the full factorial experiment.","PeriodicalId":30543,"journal":{"name":"Stroitel''stvo Nauka i Obrazovanie","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91022300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancement of a seepage control facility of an earth-filled dam that has a concrete face and a cutoff wall","authors":"M. Sainov, V. B. Soroka","doi":"10.22227/2305-5502.2022.1.2","DOIUrl":"https://doi.org/10.22227/2305-5502.2022.1.2","url":null,"abstract":"Introduction. When a rockfill dam with a concrete face is constructed on the earth foundation, its seepage control facility is complemented by a cutoff wall and an apron. Together they represent a complicated integrated seepage control facility. The performance of an integrated seepage control facility gains relevance, which is proven by the experience in the operation of a number of dams, whose concrete faces and cutoff walls may be in the adverse stress state. Towards this end, the authors studied the stress-strain state (SSS) of an integrated seepage control facility. Materials and methods. The study was conducted at the Miaojiaba rockfill dam that has an integrated seepage control facility. This dam is 111 m high and 348 m long; its riverbed is about 45 m thick. Numerical modeling using the finite element method was performed to study the spatial SSS of this dam. Measurements of the dam displacements were taken to calibrate the finite element model. Results. The SSS of the dam was analyzed to develop two alternative structural designs of an integrated seepage control facility. As for the first design option, each element (the face, the cutoff wall, the apron) is made of concrete. The analysis of this option has shown that compressive and tensile stresses, arising in the cutoff wall, exceed the strength of concrete. Besides, the cutoff wall gets separated from the foundation. Within the framework of the second option, the cutoff wall is made of clay-cement concrete. According to the results of the analysis, this design option ensures the sufficient strength of all components of a seepage control facility. Conclusions. To ensure the strength of a seepage control facility that has a concrete face, a cutoff wall and a connecting apron, the cutoff wall and the apron should be made of less rigid materials.","PeriodicalId":30543,"journal":{"name":"Stroitel''stvo Nauka i Obrazovanie","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83442039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The economic feasibility of the choice of an air conditioning system for a shopping and office centre","authors":"A. Frolova, Pavel I. Lukhmenev","doi":"10.22227/2305-5502.2022.1.8","DOIUrl":"https://doi.org/10.22227/2305-5502.2022.1.8","url":null,"abstract":"Introduction. An air conditioning system is the costliest engineering system in shopping and office centres. Buildings of this type have internal heat gains throughout the year. These heat gains are substantial because of the large number of people, the high level of artificial lighting, the availability of various items of equipment, and the heat gain from solar radiation. An air conditioning system known as ventilation cooling is of interest. It is not new; its energy assessment is quite high. The same system is under consideration, but it is evaluated from the economic perspective in the Moscow prices of 2021. Materials and methods. The problem is solved by applying a computational method to the case of a 35-storey office building in Moscow. Different values of the outdoor air temperature are studied to implement transition to ventilation cooling. Alternative options for the installation of dry coolers are compared, since they affect the length of routing of cooling circuits. Costs are calculated for all options under consideration. Results. Some results are presented as figures showing the costs of alternative air cooling systems. Conclusions. It is found that the location of dry coolers greatly affects the cost of pumping units. When comparing options 1 a, 1 b, and 1 с with the option that implies the installation of dry coolers on the building roof, the authors found that option 1 c is economically profitable at the 10 % discount. If options 2 a, 2 b, 2 c, are compared for the case when dry coolers are installed beside the building, option 2 c, that implies the transition from ventilation cooling to machine cooling at tn = 8 °C, is more economically profitable than option 2 b, when the transition occurs at tn = 5 °C, and option 2 a when the transition is triggered at tn = 0 °C.","PeriodicalId":30543,"journal":{"name":"Stroitel''stvo Nauka i Obrazovanie","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81859056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Using seismoacoustic defectoscopy to assess the continuity of piles","authors":"E. Degaev, Boris S. Kraev, Dmitry G. Bobylev","doi":"10.22227/2305-5502.2022.1.4","DOIUrl":"https://doi.org/10.22227/2305-5502.2022.1.4","url":null,"abstract":"Introduction. The authors present the results of pile continuity studies conducted using seismoacoustic defectoscopy. Tests were conducted in the Rostov region and Moscow. Reflectograms of tested piles, as well as the subsequent interpretation and confirmation of the design length and continuity of the pile shaft are provided. Materials and methods. The research results were obtained using Spektr 4.3, whose operating principle is based on the theory of elastic wave propagation. This device is used for the recording of the pile response to external impacts with the preset pulse parameters. The signal is recorded by means of an accelerometer sensor, connected to a special computer with the software for the digitization and interpretation of incoming information. Data processing results are presented in the form of computer graphic images (reflectograms), which show the pile length, continuity, damages (if any) and their location. Results. The dependence between soil homogeneity and signal purity has been identified. At the interface between two types of soils that are different in density, the sound wave was reflected and partially passed further, creating characteristic peaks of false defects. To eliminate false defects, studies of layered soils are necessary. Conclusions. The results confirm the effect of the soil homogeneity on signal purity. The higher the heterogeneity of the soil structure, the bigger the number of false peaks that the reflectogram demonstrates. A prerequisite for the correct interpretation of the results of pile continuity testing is the study of the geological section and preliminary instrumental identification of the ultrasound propagation velocity for each individual pile.","PeriodicalId":30543,"journal":{"name":"Stroitel''stvo Nauka i Obrazovanie","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75698303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}