bluuebunny/crossref_metadata_2025_split huggingface dataset:
Construction monitoring of cable stayed bridge with unequal span and single tower and single cable plane
Authors: Feng XQ 
Published: January 2022

Abstract
In order to improve the efficiency of bridge construction, a bridge construction monitoring method based on MIDAS civil finite element software is designed in this paper. Taking the construction monitoring of the main bridge of Huangshuihe bridge on Tonghai road in Xining City as an example, the monitoring parameters of the top deflection of the main tower and the simulation of temperature change during construction are described in detail. The effectiveness of the method is verified by the comparative analysis of theoretical data and measured data.
Thermomechanical Fatigue Life Prediction Method of the Trailing Edge Holes in the Turbine Blade for Turboshaft Engine
Authors: Qian Zhengming , Li Gaiqi , Mi Dong , An Xin 
Published: January 2022

Abstract
In this paper, a thermomechanical fatigue (TMF) life analysis method considering stress relaxation was established for turbine blade in a turboshaft engine. The nonlinear creep deformation of a superalloy is predicted by coupling creep damage in the framework of viscoplastic theory. The results revealed that the calculation error of the model for the elastic-plastic stress-strain curve was less than 5%, while the simulation accuracy for the creep curve is within the dispersion range of the inherent properties of material creep deformation. Based on the elastic-plastic creep analysis of a turbine blade, the creep damage and its evolution law of the leading edge and trailing edge of the blade are clarified, and a new method is provided for determining the local dangerous points on the blade. With the help of the linear damage cumulative life theory, the fatigue creep life of the trailing edge hole of a turbine blade considering the stress relaxation is obtained, which provides a more reasonable and better engineering application method for the blade life evaluation.
Creep Prediction Model of Concrete-Filled Steel Tube under Different Core Concrete Conditions
Authors: Xiong Zeyu , Zhang Rongling , Ma Lina , Hao Zhaofeng , Lv Wenda , Li Wenbo 
Published: January 2022

Abstract
To reasonably predict the creep law of concrete-filled steel tubular (CFST) members under different working conditions, four groups of creep tests were carried out, and the creep curves of CFST specimens with defects were obtained. Based on the creep prediction formula given in the code for the design of CFST highway arch bridges issued in 2015, the creep prediction models of CFST under different core concrete conditions are studied. The results show that the concrete microcracks around the cavity defects are continuously generated and expanded during the compression process, resulting in the dislocation and sliding of the concrete. It increases the additional deformation of CFST; debonding defects hinder the redistribution of stress between the steel tube and the core concrete, weaken the interaction effect between the steel tube and the concrete, and increase the creep deformation of the core concrete. According to Different core concrete states, appropriate reference factors are selected to modify the creep prediction formula of CFST, which greatly improves the creep prediction accuracy of CFST members and defective members.
Fatigue Damage of Stayed Cables Due to Buffeting Induced by Eastern-Zhejiang Typhoon
Authors: Peng Wei 
Published: January 2022

Abstract
In this paper, a 450 km simulation circle method is used to extract all meteorological records from 1949 to 2018, and to obtain random samples. The Yanmeng typhoon wind field model is compiled by MATLAB, the optimal typhoon wind profile index α is calculated. The harmonic superposition method is used to simulate the typhoon wind field at the construction site. Stress time-history of cables under buffeting is analyzed using ANSYS and MATLAB. Palmgren-miner linear cumulative fatigue damage method is used for fatigue damage analysis, combined with rain flow counting method and S-N curve. It is shown that the damage value of cable increases with the growth of wind speed. The damage of cable has a similar trend with the variance of axial stress. The cable of middle span, about an eighth of the way to bridge tower, is extremely sensitive to the wind. The low stress region is the main circulating region of the cable. The region of low stress expands with the increase of wind speed. The amplitude of cable stress mainly circulates from low amplitude to high amplitude with the increase of wind speed.
Effect of Zr-La-TiO2 Catalyst on Denitrification for Coal Combustion
Authors: Cheng Weiliang , Liu Meng , Fu Yi , Liu Mingzhu , Wang Shuqin 
Published: January 2022

Abstract
Nanocomposites of TiO2 co-doped with La and Zr were prepared using the microwave-assisted sol-gel method. The samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS), energy dispersive spectroscopy (EDS) and specific surface area measurement (BET). The XRD results revealed that all the catalysts showed an anatase phase. It was found that the particle size of La-Zr-TiO2 is much smaller than pure TiO2. Moreover, the denitrification efficiency of La-Zr-TiO2 was 65.77%, which was higher than that of the pure and mono-doped TiO2 in the experiment.
Effect of Fly Ash Content in Shotcrete on Mechanical Properties
Authors: Wu Bin , Chai Mingming , Li Shijia , Yang Jianping 
Published: January 2022

Abstract
As one of the key technologies of NATM (New Austrian Tunnel Method) construction, shotcrete has advantages such as simple, fast and adaptable technology, and becomes an indispensable modern construction method in tunnel construction. Adding some fly ash into shotcrete can reduce cracks, compensate shrinkage and improve workability. In this paper, raw materials are selected for mix design, and the mechanical properties of shotcrete with different fly ash content are experimentally studied. The test results show that the 28d compressive, flexural and tensile properties of sprayed concrete shotcrete gradually decrease with the increase of fly ash content. In order to avoid too much strength reduction and ensure structural safety, the fly ash ought to be controlled within a certain amount in the actual construction process.
Study on the Performances of an Anticoagulant Ice Coating Material for Asphalt Pavement
Authors: Wang Mingming , Gao Huarui , Chai Mingming , Sun Zhiping , Wang Jiawei 
Published: January 2022

Abstract
In order to improve the anti-icing performance of asphalt pavement and alleviate the effect of pavement freezing, the method of coating anticoagulant ice coating on the surface of asphalt pavement is adopted. In this article, application research is conducted on an anticoagulant ice coating material on asphalt pavement using standard test methods. With different dosages of anticoagulant ice agent, the major performance indexes, including the freezing point and ice adhesion on coating surface, of anticoagulant ice coating material are compared. By comparing and analyzing the results, the transformation rules and optimum dosage of anticoagulant ice agent are achieved. The results of this paper can effectively alleviate the freezing phenomenon of pavement and improve the traffic capacity of pavement.
Effect of Alkaline-Earth Metal Oxide on Compressive Strength and Flexural Strength of Alkali-Activated Slag Cement Mortar
Authors: Zheng Dengdeng , Ji Tao , Wang Guojie 
Published: January 2022

Abstract
The effect of CaO and MgO content on the compressive strength (CS) and flexural strength (FS) of alkali-activated slag mortar (ASM), which was activated by NaOH (Na2O% = 4%), was investigated. The pore structure of alkali-activated slag paste was investigated via mercury intrusion porosimetry (MIP). The morphology of ASM was observed by field emission scanning electron microscope (FSEM). The study shows that the CS and FS of ASM, which was activated by NaOH, increase first and then decrease with the improvement of CaO and MgO content. The optimal CaO and MgO content for CS are both 9% of the slag mass. The CS of ASM with optimal CaO and MgO content can achieve 46.54MPa and 47.79MPa, respectively. The optimal CaO and MgO content for FS are 6% and 3% of the slag mass, respectively. The FS of ASM with optimal CaO and MgO content can achieve 11.23MPa and 11.11MPa, respectively. The comprehensive mechanics performance of ASM are the best, when the CaO content is 6%.
Study of the Test Methods of Emission Rates in Different Ambient Temperature Fields
Authors: Zhao Xia , Jia Xin , Pei Lining , Shi Qufei , Wu Jian 
Published: January 2022

Abstract
With the wide application and rapid development of infrared temperature measurement, which has attracted wide spread interest in the field of non-contact temperature measurement due to its unique advantages. Measurement of the real temperature of the measured object is an important task in many disciplines, especially critical and difficult for the non-contact measurement. However, the accuracy of the infrared thermography technique is difficult to reach a satisfactory level, and cannot meet the requirements of high accuracy, due to the emissivity cannot be determined in outdoor environments. It is very meaningful to determinate the emissivity and accurate temperature of the object in outdoor heterogeneous environments. The influence of external environmental factors on the object surface emissivity are analyzed in this study, which is very important to improve the measurement accuracy of the infrared thermal imaging instrument. This study reveals that the increased temperature will lead in the increase of the emissivity of nonmetallic materials first and then decreases slowly. In addition, as the ambient temperature higher, the emission rate of non-metallic object becomes smaller.
Failure Mechanism of Water Wall Coating Prepared by Supersonic Arc Spraying
Authors: Yu Weixin , Tao Kangning , Dai Zhen , Zhang Yiwen , Chu Xi 
Published: January 2022

Abstract
In order to meet the requirements of environmental protection, low nitrogen combustion is widely used in thermal power plants, which causes serious high temperature corrosion of water wall on fire side. At present, some power plants use water wall anti-corrosion coating to improve their service life. n this paper, a power plant water wall coating off to explore, analysis of water wall corrosion mechanism and coating failure reasons. The results show that: The direct reason for the large-scale peeling off water wall coating is that S element penetrates through the pores of the coating and corrodes the coating, resulting in the decrease of the adhesion between the coating and the substrate and the generation of a large number of microcracks. The microcracks continue to expand and extend under the action of thermal stress and S corrosion, which eventually leads to the large-scale peeling off the coating.
Study on the Luminescence Properties of ZnS:Mn2+ Particles by High Temperature Solid Phase Method
Authors: Qian Xinyi , Chen Caifeng 
Published: January 2022

Abstract
ZnS has attracted wide attention for its potential applications in optoelectronic fields, such as solid-state lighting, fluorescent probes, electroluminescent devices and field emission displays. In this work, Mn2+-doped ZnS with hexagonal structure were prepared by high temperature solid phase method using MnCO3 as manganese source, and the effect of Mn2+ doping on ZnS was studied. The results show that the particle shape of ZnS doped with Mn2+ is hexagonal structure, Mn2+ doping changes the position and intensity of ZnS absorption spectrum and photoluminescence band. The absorption peak at 340 nm progressively moves to the right as Mn2+ doping rises, a new conspicuous absorption peak forms in the visible area, and the maximum photoluminescence intensity of ZnS:Mn2+ steadily increases. However, when the Mn2+ doping exceeds the ratio of 4 at.%, the photoluminescence intensity showed a decreasing trend. This indicates that the number of effective emission centers reaches the maximum when the doping concentration of Mn2+ is the most suitable.
Research on the Influence of Environmental Pressure on the Combustion Characteristics and Fire Spread of Building External Wall Insulation Materials
Authors: Wei Xiaoli , Ding Chao , Lan Qingyuan , Cheng Binghong , Zhu Nannan , Wang Xianwei 
Published: January 2022

Abstract
Building external wall insulation materials are widely used in the construction industry, which is one of the main materials for building energy saving. In order to study the combustion characteristics and fire spread behaviour of typical exterior wall materials at different pressures. Four environmental pressures of 40KPa, 60KPa, 80KPa, and 101KPa were set in an experimental cabin, measuring the quality, temperature, heat radiation, and heat flow of rigid polyurethane foam (RPU) through experiments. The experimental results are as follows: the masses loss curve of RPU combustion approximately obeyed the quadratic curve, which was similar to the general solid fuel combustion law; the mass change was the most dramatic at 101KPa, the lower the pressure, the slower the mass change; as the pressure decreased, the flame temperature increased slightly, and the spread of the fire slowed down; as the pressure decreased, the peak value of the thermal radiation curve decreased, and the curve tends became flat, but the horizontal axis time increased, indicating that the total heat release remained the same.
Recent advances of engineered and artificial drug delivery system towards solid tumor based on immune cells
Authors: Sun Zhuqing , Chen Jingtong , Chen Guangcun , Zhang Can , Li Chunyan 
Published: January 2022

Abstract
Precise drug delivery in cancer treatment is a long-standing concern of modern medicine. Compared with traditional molecular medicines and nano-medicines, emerging cell-based biomimetic delivery strategies display numerous merits, including successive biological functions, innate biocompatibility and superior security since they originate from living organisms, providing a very promising approach. Among them, immune cells receive increasing attention because of their inherent ability in tumor resistance, pathogen elimination, and other significant physiological functions. Herein, we investigated the recent advances on immune cell-based high efficient delivery and therapeutic strategies in solid tumor treatment, mainly focus on T cells, natural killer cells and macrophages, which have been used as drug cargos directly or provided membrane/exosomes as nanoscale drug delivery systems. We also discuss the further potential applications and perspective of this innovative strategy, as well as the predictable challenges in forward exploration in this emerging area.
The response of bioactive titanium surfaces with different structure to UVC-irradiation to eliminate the negative effect on biological properties during aging time
Authors: Zuo Rui , Lu Xugang , Wei Changsheng , Xiong Shibing , Chen Jun , Zhang Siqi , Huang Ping , Yang Bangcheng 
Published: January 2022

Abstract
The biological aging of titanium implants affects the service lifetime negatively in clinical applications, and Ultraviolet (UV) irradiation is an applicable method to overcome the biological aging. This study investigated the changes in surface characteristics and biological properties of bioactive titanium surfaces with different structure and topography after Ultraviolet C (UVC) irradiation. The bioactive titanium surfaces were prepared by anodizing (AO), sandblasting and acid-etching (SLA), acid-alkali etching (AA), alkali-heat etching (AH) methods. Samples were stored at dark for 7 weeks to simulate biological aging process and then irradiated by UVC for 2 h. The results showed that the hydroxyl groups (Ti-OH) on surfaces, which are crucial to enhance the biological properties, were easier to be generated on AO surfaces by UVC-irradiation, owing to a mixture of anatase and rutile on surfaces. UVC-irradiation had the strongest effect on AO surfaces to enhance the bioactivity in bone-like apatite deposition and better biocompatibility in mesenchymal stem cells (MSCs) attachment and proliferation. Therefore, titanium surfaces with a mixture phase of anatase and rutile have the potential to effectively utilize the benefits of UVC-irradiation to overcome the negative effects of the biological aging and have a promising clinical application prospect.
Evaluation of the efficiency of apple picking using a flexible manipulator
Authors: Semenov K D , Medyakov A A , Ostashenkov A P 
Published: January 2022

Abstract
Flexible manipulators are a promising executive tool in various technological complexes. In the process of collecting fruits, they can, in addition to their main task of delivering working bodies to the object of labor, also perform the functions of flexible guides. For the use of flexible manipulators in agriculture, namely in the operations of harvesting apples, developments are needed that are relatively cheap to manufacture in comparison with other flexible manipulators. To analyze the efficiency of apple picking using a flexible manipulator, a series of tests was carried out. As part of the tests, the process of picking apples was simulated using a flexible manipulator. The number of apples harvested for branches of various geometries was estimated. Within the framework of the discussion, the prospects of introducing a flexible manipulator in super-intensive gardens in Russia were assessed.
Digital precision farming technologies
Authors: Abramov N V , Semizorov S A , Sherstobitov S V , Gunger M V , Ufimtsev A E 
Published: January 2022

Abstract
A systematic approach to the use of digital technologies in precision farming is proposed. The scientifically grounded transition to digitalization of production processes in crop production includes two stages. The first is the formation of comprehensive data on terrestrial and space factors in the production of agroecosystems. The natural potential of the Northern Trans-Urals (1.6 - 2.2) has been established, which indicates satisfactory soil and climatic conditions for growing crops. The biopotential of agrocenoses was calculated for photosynthetic active radiation (PAR). The potential yield of spring wheat is 13.75 t / ha. In long-term experiments (1977-2020), the really possible crop yield was determined. The mathematical model of the formation of soil fertility parameters shows the intensity of growth or decline in the productivity of agrocenoses. At the second stage, in order to optimize life-supporting factors, innovative technologies for growing crops using space systems are being developed. The practical implementation of digital technologies begins with the digitization of fields, monitoring of soil fertility in elementary areas with reference to geographic coordinates. The use of precise technologies for sowing, differentiated application of fertilizers, pesticides, and yield mapping made it possible to reduce the cost of grain by 140 rubles / c and increase the profitability of its production by 24%.
Implementing and financing sustainable rural development in the Republic of Bashkortostan, by the example of the Ufa district
Authors: Nigmatullina G , Zapolskih J , Lazareva T , Hanova I , Salimova G 
Published: January 2022

Abstract
A key aspect of rural development is its considerable natural, demographic, economic, historical and cultural potential. Its reasonable, effective and efficient fulfillment can provide diversification, full employment, and high living standards in rural settlements. Rural development is a long-term action plan, it is a strategy for the socio-economic development of rural areas. The Strategy of socio-economic development of rural territories is a document defining the priorities, goals and objectives of socio-economic development of rural territories for the long term, corresponding to the priorities, goals and objectives of socio-economic development of rural territories of the Russian Federation and the Republic of Bashkortostan. The given paper discusses the strategy of sustainable rural development in the Republic of Bashkortostan. The work highlights factors hindering the program implementation. These include a manpower shortage, insufficient funding, weak infrastructure and others. There is a brief overview of the current state of the agro-industrial complex in the Republic of Bashkortostan. The study suggests a draft financial support for the municipal program of integrated development by the example of the Ufa district. The authors consider the cause-and-effect relationship between the amount of financing and the pace of rural development.
Food security of Kuzbass: state, problems, and prospects
Authors: Panasenko N A 
Published: January 2022

Abstract
Food security is one of the essential components providing the country’s economic security. The article analyzes the state of the agro-industrial complex in Kuzbass over the past three years. The author analyzed the consumption of food products in comparison with the recommended consumption rates per a person. As a result, some problems were identified. The analysis of the production and consumption of food products in the region was carried out. During the analysis, it was revealed that in 2020, the level of the Kemerovo region self-sufficiency for a larger range of product, with the exception of bread and bakery products, potatoes, eggs and confectionery, is below 100%. The level of economic and physical availability of food in the region has been calculated. It is concluded that the food consumption structure of the Kemerovo region population is not rational; in recent years, the consumption of meat and meat products has increased dramatically by almost 30%, and the consumption of sugar and confectionery has also increased by more than 15%. The population in smaller quantities consume all other food products than it is assumed by the consumption standards. The pursuit of food security is a continuous process, but priorities and the mechanism for their implementation can change under the influence of various factors. The article also presents the prospects for improving food security.
Using the project methodology to improve environmental education for students of technical specialties
Authors: Yekimov Sergey , Aleksey Masenko , Natalia Grankina , Bruslova Olga , Bruslov Alexandr 
Published: January 2022

Abstract
Environmental education of students of technical specialties should take into account the features of their future specialty. Within the framework of economic activity, humanity has a significant impact on the state of the environment. Natural resources, which took millions of years to form, are used in the production of various material goods. This production process leads to negative phenomena associated with the destruction of the fragile natural balance. In addition to the impact of biocenosis, economic activity also worsens the environmental situation and has a negative impact on the existence of human civilization itself. For effective public control and monitoring of the state of the natural environment, the necessary conditions are the availability of environmental education among the population and the training of technical specialists capable of solving various environmental problems. The project form of training allows to increase the efficiency of specialists of technical specialties. And the use of projects related to environmental problems in the learning process gives students the opportunity to supplement their environmental knowledge. The poor environmental situation is the main reason for the decrease in the level of immune status and the increase in morbidity in the population. The sustainable development of human society can be achieved only if a dynamic balance is established between the needs of man and the ability of nature to self-repair.