bluuebunny/crossref_metadata_2025_split huggingface dataset:
Pre-Assessment of earthquake-induced losses: a case study from Xiangning County, Shanxi Province, China
Authors: Zhao Jie , Wang Feijian , Zhang Congcong 
Published: September 2020

Abstract
Rapid assessment of earthquake disaster loss is the main method of earthquake emergency response after an earthquake. China has a vast territory, the accuracy and current situation of regional basic data are generally low, and the houses in rural areas are not subject to mandatory seismic fortification requirements, which are the key factors affecting the accuracy of rapid assessment results. The regional field investigation is applied to the process of earthquake disaster loss pre-assessment. Through the investigation of the building structure, personnel mobility and major hazard sources, the accuracy of rapid assessment of casualties will be improved. Taking Xiangning County of Shanxi Province as an example, the method of earthquake disaster loss pre-assessment is studied.
Study on the relationship between radon characteristics of underground water and seismicity in the Longxian - Baoji fault zone, NW China
Authors: Liu Jie , Zhao Xiaomao , Wang Xin , Wang Jingli , Qiu Yurong 
Published: September 2020

Abstract
Destructive earthquakes are mostly located in the active fault zones. The underground gas anomalies result to basically be consistent with the inferred distribution of active fault systems. Among them, radon is the earliest used as the effective prediction index of fault zone earthquake prediction. In this paper, radon concentrations in groundwater from the Longxian – Baoji fault zone in the Northwestern China are analyzed. Results show that the NW sector has a lower radon concentration (∼12 Bq/L) than that of the SE sector (40 ∼ 50 Bq/L). It indicated that the connectivity between the shallow and deep crust is relatively poor in the NW sector, which is not conducive to the upward diffusion and migration of deep fluids. Given that there is a seismic gap with no rupture of M ≥ 61/2 strong earthquake in the NW sector, it can be infered that the NW sector of the Longxian - Baoji fault zone has a higher risk of strong earthquakes than that in the SE sector.
Wave-induced liquefaction hazard assessment and liquefaction depth distribution: A case study in the Yellow River Estuary, China
Authors: Du Xing , Sun Yongfu , Song Yupeng , Xiu Zongxiang 
Published: September 2020

Abstract
Predicting the potential depth of wave-induced liquefaction is of vital importance of hazard assessment. Prevention and mitigation of liquefaction hazard can be carried out after predicting the liquefaction potential depth. Sediment geotechnical parameters were summarized from historical engineering projects and calculated liquefaction depth with data of actually measured water depth, sediment types and different wave recurrence periods. Then the study area was divided into different liquefaction zones. Results showed that both liquefaction range and depth increased with wave return period, which remained steady when increased to a certain extent. The calculated liquefaction depth was compared with the thickness of liquefied layers, which obtained by geophysical methods. Result shows that the average difference was about 1m, which means the method of liquefaction depth calculation was applicable in this study area. At last, in order to reduce harm of liquefaction, potential maximum liquefaction depth (PMLD) is put forward. PMLD is the smaller one between the thickness of seabed liquefiable sediment and the maximum calculated liquefaction depth. The calculation and partition of liquefaction depth can be more accurate after considering PMLD.
Experimental study on the performance of goaf filling materials with high content of fly ash
Authors: Wang Xiaodong 
Published: September 2020

Abstract
In this paper, fly ash is studied as the main cementing material for coal mine goaf filling. The performance of the filling materials with 90% fly ash such as compressive strength, impermeability, viscosity, additive effect and diffusion rule are studied experimentally and theoretically. The results show that compressive strength and impermeability are positively correlated with cement content when water-solid ratio is 0.7:1.0 with 90% fly ash. The compressive strength increases slowly in the early stage while it increases with a faster speed in the later stage. The compressive strength of the material after 60 days of curing is 1.90 times that of 28 days. Additive could promote the activity of fly ash and improve hydration reaction. The interparticle porosity is reduced, but strength at early stage and impermeability are increased. The viscosity of the filling material has an obvious shear thinning phenomenon as shear rate increases. An inflection point appears when shear rate is 30s−1. The filling material with high content of fly ash presents the rule of horizontal diffusion and longitudinal accumulation in goaf filling treatment. The diffusion distance and accumulation height are positively correlated with grouting pressure.
Experimental research on smoldering combustion for oily sludge
Authors: Wang Tianyu , Jiang Wenming , Liu Yang , Chen Shaoqi , Ding Juhua 
Published: September 2020

Abstract
Petroleum contaminants like oily sludge and oily spills cause a great damage to the environment. Compared to the conventional treatments to remove the oily contaminants of the soil, smoldering combustion can satisfy the further treatment of contaminants with low oil content. This paper presents the experimental research of smoldering combustion for oily sludge with low oil content. Experimental results showed that petroleum contaminants could be further removed with the condition of continuous heating. However, without external heating, smoldering would not be self-sustaining. Experimental results show that smoldering has the potential to further remove petroleum contaminants in low oil content oily sludge which cannot be treated by other methods.
Decoupling between industrial environmental pollution and industrial economic growth in Guangxi Beibu Gulf Economic Zone
Authors: Liu Yanhua , Ye Guohua , Han Shijing 
Published: September 2020

Abstract
In order to gain a deeper understanding of the decoupling change trajectory of the industrial environment pollution and industrial economic growth in Guangxi Beibu Gulf Economic Zone, and to better solve the problem of sustainable economic development under the concept of low-carbon economy, based on the decoupling theory, six major indicators such as COD, ammonia nitrogen, SO2, NOx, PM and industrial added value were selected to conduct the empirical analysis of the decoupling relationship between industrial environmental pollution and industrial economic growth in Guangxi Beibu Gulf Economic Zone from 2009 to 2016. The results showed that they were basically in an unstable state of incomplete decoupling, most of which were manifested as strong decoupling, accompanied by other types of decoupling, and no obvious evolutionary law. In terms of time, the decoupling reached its best in 2013 and 2016. In terms of space, the decoupling in Nanning was the best.
Analysis on the difficulties and countermeasures of energy saving reconstruction of existing rural residential buildings
Authors: Huang Mingqiang , Lin Ruijuan 
Published: September 2020

Abstract
The energy-saving reconstruction of existing rural residential buildings can not only improve the living environment of rural residents, but also achieve energy conservation and emission reduction of the construction industry and sustainable development. At present, the energy-saving reconstruction of existing rural residential buildings has become a topic of global concern. Many countries begin to pay attention to the energy-saving reconstruction of existing rural residential buildings and begin to formulate relevant policies and regulations. Based on the analysis of the construction situation about the existing rural residential buildings, this study expounds the difficulties of the energy-saving reconstruction of existing rural residential buildings, and puts forward corresponding suggestions, so as to realize the development of the energy-saving construction of the residential buildings in the villages and towns.
Comparison on techno-economic analysis of ammonia production using urea from SCR denitration reducing agen in 300MW coal-fired unit
Authors: Feng Qianwei , Li Cunwen , Zhang Peng , Zhang Yang , Wang Fengji , Zhu Yue 
Published: September 2020

Abstract
Under the current environmental protection situation, comparison on techno-economic analysis of the ammonia production using urea can provide reference and guidance for the coal plant’s transformation project of replacing liquid ammonia with urea. Taking eleven 300MW SCR denitrification reducing agent urea replacing liquid ammonia in 4 power plants as an example, the technical characteristic and material consumptions, investment cost and operation cost were compared on urea pyrolysis with electric heater, urea pyrolysis with gas heat exchanger and urea hydrolysis, the main influence factors and reasons of Urea to replace liquid ammonia transformation project on such unit had been mastered. The results show that the processes of ammonia production by urea pyrolysis and urea hydrolysis were mature and feasible, and both had their advantages and disadvantages.
Effect of matured compost and exogenous microbial inoculants on the composting process of digestate eluted from dry anaerobic digestion
Authors: Tan Wenbing , Liu Ping , Zhang Xiaohui , Xi Beidou 
Published: September 2020

Abstract
Biogas and digestate can be produced by anaerobic digestion of pig manure and straw. However, further treatment of digestate should be carried on. The digestion efficiency is affected by the addition of extra biodegradable materials or inoculants. This study was conducted to reach a less emission and higher efficient of the composting process. The windrow composting of the digestate by adding mature compost and exogenous commercial microbial inoculants was performed by two assays per variation. The composting process showed that the digestate treated with exogenous microbial inoculants reached a 10-20% higher organic matter loss than the digestate without exogenous microbial inoculants. The plant-nutrients (N, P, K) were significantly increased due to the positive effect of exogenous microbial inoculants, especially the HK microbial inoculants. Adding matured compost can reduce the plant-nutrients loss caused by leaching from digestate, which is with high moisture content. Meanwhile, the concentrations of toxicant heavy metals in digestate were also increased after composting due to organic compounds decomposition and concentration effect. Additionally, the heavy metals concentrations in compost are still under the standard. In general, the results illustrated that windrow composting can be added to enhance the composting efficiency and resource recovery of pig manure and straw.
Low-temperature alkali-modified fly ash as an effective adsorbent for removal of ammonia nitrogen, phosphorus and COD from the wastewater
Authors: Meng Ruihong , Lv Pengcheng , Yang Yang , Xu Dong , Gao Tengfei , Fu Yanchun 
Published: September 2020

Abstract
In this study, low-temperature alkali-modified fly ash and polymeric aluminum chloride(PAC) for the removal of total phosphorus, COD and ammonia nitrogen, from wastewater was systematacially investigated. The removal rate of ammonia nitrogen was 81.10%, and the removal rates of phosphorus and COD were 90.21% and 55.48%, respectively., when a dosage of the alkali-modified fly ash was 5g/L, the amount of PAC was 50mg/L, and the mixing time was 39min. In comparison with raw fly ash, the removal rate of ammonia nitrogen is 80.16% higher than that of the original fly ash, and the removal rate of total phosphorus is 35.48% higher. Fly ash with improved surface can be used as an alternative adsorbent to flocculate and precipitate in cooperation with polymeric aluminum chloride, which can be applied to the treatment of total phosphorus, COD and ammonia nitrogen in the sewage. This study provides a theoretical basis for the coagulation adsorption method and realizes the utilization of fly ash.
Molecular simulation study on the radon adsorption behavior in carbon nanotube bundles
Authors: Wang Qingbo , Cheng Jinxing , Wu Youpeng , Wen Weiwei , Han Junjie , Yu Ai 
Published: September 2020

Abstract
As we know radon is harmful to people because of its radioactivity. Focusing on the technical requirements of radon mitigation by adsorption, the radon adsorption behavior of carbon nanotube bundles was studied under different diameter tube bundles and different tube spacing using the grand cononical ensemble Monte Carlo (GCMC) simulation method. The results show that the (10:10) type nanotubes have the strongest ability to adsorb radon with a tube spacing of 1 nm, followed by (7:7) type nanotubes with a tube spacing of 1 nm. The bundle of carbon nanotubes of the (8:8) type has the worst adsorption capacity. Moreover, the nanotube bundles of each type of tube have an increased ability to adsorb radon as the tube spacing increases.
Numerical simulation study of quench tower in flue gas purification system
Authors: Long Peng , Li Zhiwei , Li Mengdi 
Published: September 2020

Abstract
By establishing a numerical simulation model of the high-temperature flue gas spray evaporation process, the heat transfer and flow processes in the quench tower using 4 different numbers of atomizing nozzles were simulated. Research and analysis were conducted under specific conditions. Different number of atomizing nozzles, the flow field above the quench tower is different, the greater the number of atomizing nozzles, the smaller the area occupied by the air flow, the smaller the conical volume formed by the droplets, the less time it takes to fully evaporate. A single atomizing nozzle cools down faster within 2m from the top of the tower, have the longest trajectory length of the droplet movement, but the time for the droplet to completely evaporate is the longest.
Organic pollutants treatment in a water aerosol reactor by pulsed corona discharge at atmospheric pressure
Authors: Wu Haixia , Fan Jiawei , Xu Yanhua , Liu Feng , Fang Zhi 
Published: September 2020

Abstract
An atomization reactor with a gas cycler is designed, and the phenol is treated as wastewater by pulse corona discharge, which is sprayed into the reactor through a pneumatic atomization nozzle. To fully utilize the ozone and enhance organic pollutant removal, we maintained continuous gas circulation in the reactor. The resulting phenol solution was subjected to six passes of decomposition treatment. Approximately 87.4% of 100 mg/L phenol concentration was decomposed in the plasma system gas circulation, whereas only 51.9% was decomposed in the same system but without gas circulation after the sixth pass treatment. The decomposition efficiency increased with applied voltage and pH. In addition, homogeneous catalysts such as hydrogen peroxide (H2O2) and iron (II) (Fe2+) enhanced the removal of phenol. The novel reactor was also used for the deep treatment of phenolic compounds in coking wastewater. Compared with systems using ozonation, the plasma system working under optimal conditions considerably improved the performance of industrial wastewater treatment, which can be regarded as a promising alternative AOP for wastewater remediation.
Research on the comprehensive benefits and driving forces of various typical types of marine development in Jiangsu Province
Authors: Gao Sheng , Sun Huihui , Zhao Lin , Cao Guangxi , Liu Wei 
Published: September 2020

Abstract
The comprehensive benefit assessment of marine development type is an important basis for marine development according to local conditions. It is of great significance to realize the rationality of marine development and promote the sustainable development of the ocean. This paper calculates the economic net benefit, ecosystem service function loss value, fishery resource loss value and ecological profit and loss value of four main types of marine development projects in Jiangsu Province. The evaluation, correlation and driving force analysis of the comprehensive benefit value per unit area of marine development type are carried out. It is found that the sequence of economic net benefit and comprehensive benefit value is the same, from the highest to the lowest, they are port industry, offshore wind power, sewage dumping and aquaculture. After deducting the economic benefit value, the comprehensive benefit value is in the order of offshore wind power, aquaculture, port industry, sewage dumping, and the evaluation value is very close. Economic net benefit, ecosystem service function loss value and comprehensive benefit value have the most significant correlation. Through principal component analysis, it is found that economic net benefit is the key driving factor.
Research on risk assessment of offshore supply vessels carrying dangerous cargoes
Authors: Liu Baozhan , Jin Weiwei , Zhao Jianping , Song Shasha , An Wei 
Published: September 2020

Abstract
In view of the lack of effective quantitative risk of dangerous cargoes carried by offshore supply vessels under the influence of multi-level, multi-variable and non-quantitative factors, the paper adopts the multi-level fuzzy comprehensive assessment method to screen the key risk sources of dangerous cargoes carried by offshore supply vessels, and has respectively constructed the risk possibility and hazard consequence assessment index systems and carried out the risk classification calculation. Through the calculation of the risk of carrying dangerous cargoes on an offshore supply vessel in Bohai Sea, the results show that the risk possibility of the supply vessel is medium to low level, the hazard consequence is medium to high level, and the comprehensive risk level is medium. Therefore, the minimum reasonable and feasible ALARP principle should be followed to reduce the risk. The assessment method can judge the risk level of dangerous cargoes carried by offshore supply vessels and provide technical support for emergency response of offshore supply vessels.
Soil microbial remediation to soybean field of Northeast China: Dynamic changes of fomesafen residues and phospholipid fatty acids in the black soil after application of Shigella flexneri FB5
Authors: Yang Fengshan , Sun Cong , Lai Yang , Ma Yukun , Fu Haiyan , Liu Chunguang 
Published: September 2020

Abstract
Fomesafen is widely used to control broad-leaved weeds in oil-bearing crops such as soybean and peanut. However, fomesafen has a long residual period in soil. If it is not used properly, it will cause damage to sensitive crops in different degrees. In this paper, the effects of fomesafen-degrading strains on the residue of fomesafen and the structure of soil microbial community were studied. Under field experiments, a microbial solution containing fomesafen-degrading Shigella flexneri FB5 was sprayed. We then detected residual fomesafen in the soil using high-performance liquid chromatography and phospholipid fatty acid content using gas chromatography-mass spectrometry. Analysis of variance suggested that the addition of fomesafen-degrading strains had a significant effect on soil microorganisms, as revealed by changes in the fungi/bacteria index, gram-negative/gram-positive bacteria ratio, stress indicators, and total phospholipid fatty acids. To sum up, our results show that the use of fomesafen-degrading strains can reduce the toxicity of fomesafen.
Effects of forest belt in park on the chemical composition for PM2.5
Authors: Chen Bo , Liu Chunhe , Fan Jihong , Shi Jinchao , Yu Haiqun 
Published: September 2020

Abstract
This paper represents results on the effects of forest belt on seasonal variation on the main chemical components for PM2.5 in the park environment in Beijing. PM2.5 samples were collected inside and outside a conifer forest simultaneously for 1 year in Beijing Olympic Forest Park. Chemical components including organic carbon (OC), elemental carbon (EC), water-soluble ions and elements in PM2.5 were measured. Results indicated that forest belt had significant impacts on PM2.5 chemical compositions of park. Organic matter, SO4
2-, NO3
−, NH4+, and crustal matter were the dominant components of PM2.5. The measured OC was divided into primary OC (POC) and second OC (SOC) parts following the method of EC tracer. Concentrations of OC, SOC, as well as SO4
2-, NO3
−, NH4+ and K+ in PM2.5 inside of forest were markedly higher than those outside of forest. The highest concentrations of OC, EC, and SO4
2- were observed in winter and the lowest values were found in summer. In contrast, the highest concentrations of most crustal elements were observed in spring, and the highest levels of pollutant elements were found in winter. Among these elements, annual mean concentrations of As and Cr exceeded WHO standard during monitoring period.
The application of principal component cluster analysis in environment classification for Chinese cities
Authors: Wang Jingcheng , Zhang Lunwu , Zhang Dingfei , Zhao Fangchao , Yang Xiaokui 
Published: September 2020

Abstract
In order to investigate the dissimilarities of different cities in China, an approach combining principal component analysis and hierarchical clustering is proposed. Three rather than two principal components are reserved to conduct a more elaborate analysis. Based on corresponding component scores, dissimilarity between each city is measured during clustering. These cities are classified into seven types, and they are marked on the map of China. The result of this classification is consistent to our traditional cognition. Therefore, the principal component cluster analysis is suitable for analyzing numerous observations with variables on a large scale. This approach helps to enhance the environmental adaptability of equipments by recognizing the environment type of each city.
Characteristics of heavy air pollution in Beijing-Tianjin-Hebei and the surrounding areas during autumn and winter and policy recommendations
Authors: Tang Qian , Lei Yu , Yan Gang , Xue Wenbo , Wang Xuying 
Published: September 2020

Abstract
Beijing-Tianjin-Hebei and its surrounding areas is the most polluted region in China. Autumn and winter are the most heavily polluted seasons. It is essential to reduce the PM2.5 pollution in autumn and winter in this region for winning the blue sky defense war. The characteristics of PM2.5 pollution during autumn and winter in this region were analysed and crucial issues in atmospheric pollution prevention were identified from the perspectives of time, space and pollution sources, using a combination of techniques including air quality observation, emission inventory, PM2.5 source apportionment and air quality model simulation. The results showed that average PM2.5 concentrations in autumn and winter were twice that in spring and summer, and frequent heavy pollution elevated PM2.5 concentration significantly. Six cities including Handan, Xingtai, Shijiazhuang, Xinxiang, Anyang and Baoding, located along the south-western transport channel in the region, have great effects on regional air quality. The severe PM2.5 pollution in this region could be attributed to heavy industrial structure, large NOx emissions from mobile sources, re-burn of loose coal, insufficient dust control and impacts from cities out of the region. Suggestions for air pollution control in autumn and winter in this region were proposed. More efforts should be devoted to the most vulnerable links in the key cities.