bluuebunny/crossref_metadata_2025_split huggingface dataset:
Determination of Gas Content in Low Permeability and High Gas Coal Seam
Authors: Zhang Jufeng , Yang Fengfeng , Lei Wulin , Xu Tai , Zheng Chao , Zhang Jianjiang , Miao Zaiquan 
Published: November 2019

Abstract
The determination of coal seam gas content is of great significance to the study of coal seam gas occurrence law and gas prevention technology. There are direct and indirect methods for the determination of gas content in coal seam. Both direct and indirect methods have their advantages and disadvantages, but the results of direct measurement have more disadvantage than indirect measurement. In this paper, the gas content in No. 1 coal seam of Weijiadi Coal Mine is determined by indirect measurement method. The gas content in No. 1 coal seam is calculated to be 8.1m3/t, which is important for gas geological division and precise gas extraction.
Study on Safe Mining Speed of Coal Face to Avoid Goaf Fire
Authors: Zhang Jufeng , Xu Tai , Zheng Chao , Yang Fengfeng , Li Yanju , Zhang Jianjiang , Miao Zaiquan 
Published: November 2019

Abstract
In view of the coupling problem of gas and coal spontaneous combustion in goaf of 2302 coal mining face in Weijiadi Coal Mine in Jingyuan Coal Area, if the control is not in place, it may cause serious accidents such as gas explosion. By means of fluent simulation, the spontaneous combustion period and oxygen distribution of residual coal in goaf are obtained, and the minimum advancing speed of coal mining face to prevent spontaneous combustion in goaf is calculated to be 1.43m/d. By implementing fire prevention measures such as blocking air leakage in upper and lower corners, grouting and nitrogen injection in goaf, the oxygen concentration in goaf is controlled within 11%, and the spontaneous combustion zone of oxidation is fast. Transferring to asphyxiation zone and preventing the residual coal from firing in goaf are of great significance for ensuring the safety of mine production.
Deformation and mechanic response of surrounding rock mass during shallow buried large-section tunnel excavation
Authors: Xing Enda , Lu Binqiang , Wu Jimin , Chu Feifei , Le Huilin 
Published: November 2019

Abstract
The stability of underground tunnel is closely related to the stress status of surrounding rock mass. Aiming at a typical large-span hydraulic tunnel, the variation of deformation and stress of rock mass during excavation was investigated. Results show that the peripheral convergence of surrounding rock increases with buried depth, and the crown settlement is more sensitive to depth. The horizontal displacement of surrounding rock decreases with the distance to tunnel side wall and the excavation disturbance is about 2 times of the tunnel width. There are obvious time and spatial effects of displacement because of the existence of working face. The restrain distance is about 1.5 times of tunnel width. The excavation of the tunnel changes the stress status of surrounding rock mass. Stress concentration first forms above the crown of the tunnel and then a continuous stress arc develops around the support. The stress arc is favorable to the stability of tunnel.
Research and Implementation of Geography Information Query System Based on HBase
Authors: Qian Lin , Yu Jun , Zhu Guangxin , Pang Hengmao , Mei Feng , Lu Wenda , Chen Haiyang , Xu Mingjie , Wang Lin , Mei Zhu 
Published: November 2019

Abstract
With the rise of cloud computing research, the advantages of cloud computing and storage resources are discovered continuously: distributed computing, massive, dynamic and so on. Consequently, more and more application systems begin to migrate to the cloud platform. However, the difference between cloud platform and traditional single or multiple sever model bring certain challenges to the system development. In this thesis, a Geography information query system based on HBase was studied and implemented rellied on National Geography Public Welfare Project. The query system can make users to retrieve the information of sea wind and satellite images by the graphical interface. Through the effective application of query technology, the system can efficiently extract the concerned Geography data information for the fishery production and Geography disaster prevention. This thesis firstly displayed the Geography information query system with the running examples, and secondly tested and analized the HBase query optimization technology to vertify its great expandability and usability. Finally, the performance test of Geography information query system indicated that the system had high scalability and high reliability in the cloud environment.
Summary of Rainfall Simulation Methods in Centrifuge
Authors: Chang Sheng 
Published: November 2019

Abstract
In the field of geotechnical engineering, in order to study the effects of rainfall erosion and seepage on the stability of slopes, the use of rainfall simulation tests in centrifuges has become a hot issue for scholars. In this context, many researchers have developed rainfall simulation devices in centrifuges and studied related theories. This paper summarizes the research status of the rainfall simulation device in the centrifuge in recent years, and it discusses the research status of the force exerted on the raindrop in centrifuge. The characteristics of various devices and analysis methods are reflected by comparison. This paper provides an important reference for future scholars in the study of centrifuge rainfall simulation.
Preparation and Characterization of Micron-Sized Polymer Plugging Agent
Authors: Pu Wanfen , Tang Ximing 
Published: November 2019

Abstract
The experiment being made by our research is focusing on preparation and characterization of expandable plugging agent. This kind of heat resident plugging agent with spherical shape was synthesized by emulsion polymerization based on acrylamide (AM), acrylic-acid (AA) and 2-acrylamido-2-methylpropane sulfonic acid (AMPS). 2,2'-Azobis (2-methylpropionamide) dihydrochloride (AIBA) as functional catalyzer. Further separation and purification of the extracted products will be carried out to obtain the ideal products. The chemical and morphology of resin is investigated by means of thermogravimetric analysis (TGA) and scanning electron microscopy (SEM), respectively. Moreover, compared with typical plugging agent, the expandable plugging agent we prepared should demonstrate superior properties on the aspects of temperature resistance.
Soil Structure and Stability Features under Rotation Tillage
Authors: Li Juan , Guo Zhen , Xu Yan 
Published: November 2019

Abstract
In order to improve the soil quality and soil environment, make crop grow ecologically and healthily, and reach the goal of increasing regional agricultural production and income, this paper studied the soil structure and stability under different rotation methods. The sixtreatments ofrotation tillage were included: subsoiling-no tillage (N-S)T, subsoiling-tillage (S-C)T, tillage-notillage (C-N)T, notillage-notillage (N-N)T, subsoiling-subsoiling (S-S)T and tillage-tillage (C-C)T. Among them, tillage- tillage (C-C) T was regarded as the traditional method and control group. The result showed that: (1) compared with pre-experimental status and traditional measures, reasonable and scientific alternate farming measures were conducived to reduce soil bulk density, increase soil porosity, and improve soil permeability. In the 0-60cm soil layer, the effect of “no-tillage and subsoiling” treatment on the improvement of bulk density and porosity was the best. With pre-trial and conventional tillage as comparison, the soil bulk density decreased by 3.8% and 8.6%, and the soil porosity increased by 3.3% and 7.8%. (2) "No tillage - subsoiling” treatment can better improve soil stability in 0-40cm soil layer. The soil mechanical aggregate and the ratio of water-stable aggregate content can be increased by 11.4% and 5.2% in the layers beyond 0.25mm. Compared with the conventional tillage, the soil structure breaking rate and other factors were significantly decreased in rotation tillage. The effects of “no tillage-subsoiling” and “subsoiling-subsoiling” treatments on reducing the fractal dimensions of aggregates were significant.
Study on Planning, Utilization and Protection of Emergency Water Source in Danyang City
Authors: Jia Junyuan , Ge Weiya , Lei Ting , Tian Fujin 
Published: November 2019

Abstract
In order to respond to sudden water pollution incidents of surface water sources efficiently and ensure the water demand of industry and living in Danyang City, the location of emergency groundwater sources in Danyang City was confirmed by comparison of schemes. According to the relevant emergency water supply regulations, the forecast analysis determines that the emergency water supply event is assumed to be 7 days and the emergency water supply scale is assumed to be 300,000 m3/d. The demonstration scheme of emergency water source wasput forward. The groundwater level change was analyzed by numerical simulation, and the groundwater quality is evaluated. Results of simulationshow that the pore water in Binjiang area is abundant and can be used as a medium to large water source. The groundwater quality is extremely complex, the shallow groundwater quality is poor, it is not suitable for drinking, and the deep water quality is relatively good. After treatment, it can be used as an emergency water source. Under the condition of emergency exploitation of water source area, the water level of the second aquifer group in the mining funnel area will approach - 20m, forming an obvious water level depression funnel area.
Research on Mine Ventilation Optimization Based on 3D Simulation System
Authors: Jiang Aiwei , Zhou Bo , Hu Hao , Luan Jianwei 
Published: November 2019

Abstract
Based on the application of Ventsim software as the analysis tool and the modern optimization design method as the theoretical basis, aiming at the current situation of the ventilation reversal, large ventilation resistance and insufficient safety equipment investment in the mine of Xinglongzhuang Coal Mine, combined with the basic data of the mine, the mine ventilation three-dimensional is established. The simulation model is used to construct a three-dimensional simulation system for mine ventilation. The mine ventilation three-dimensional simulation system is used to simulate the solutions of ventilation reversal and mine ventilation, so as to realize the optimal design of the ventilation system, effectively ensure the ventilation needs of the normal production of Xinglongzhuang Coal Mine, and improve the visualization of the regulation of the mine ventilation system. automation.
The seismic analysis of the safety evacuation device
Authors: Wang Yongyan , Wang Yong , Cui Lizhuang , Feng Xuezhi , Sun Gengyu , Jing Xiumin 
Published: November 2019

Abstract
The seismic resistance of the safety evacuation device is mainly dependent on the structural design of the cabin, and it requires that the bulk structure must have sufficient strength and stiffness to resist the impact of the seismic load applied to the cabin. In this paper, the structure model of the similar triangular cabin structure is established, and then the seismic analysis of the structure of the similar triangular structure is carried out. The first twelve modes and the natural frequencies of the similar triangular structure are obtained by modal analysis in ANSYS Workbench, and the cabin structure deformation position and the most serious dangerous frequency are obtained to avoid resonance. Finally, the seismic acceleration load is applied to the triangular cabin, and the transient dynamic analysis is carried out to simulate a certain earthquake condition. The equivalent stress cloud image and the total deformation cloud analysis show that the acceleration, deformation and stress of the cabin structure are not large, and indicating that the triangular cabin structure satisfies the seismic requirements.
A critical review on the chemical wear and wear suppression of diamond tools in diamond cutting of ferrous metals
Authors: Jiang Guo , Jianguo Zhang , Yanan Pan , Renke Kang , Yoshiharu Namba , Paul Shore , Xiaobin Yue , Baorui Wang , Dongming Guo 
Published: November 2019

Abstract
Diamond tools play a critical role in ultra-precision machining due to their excellent physical and mechanical material properties, such as that cutting edge can be sharpened to nanoscale accuracy. However, abrasive chemical reactions between diamond and non-diamond-machinable metal elements, including Fe, Cr, Ti, Ni, etc, can cause excessive tool wear in diamond cutting of such metals and most of their alloys. This paper reviews the latest achievements in the chemical wear and wear suppression methods for diamond tools in cutting of ferrous metals. The focus will be on the wear mechanism of diamond tools, and the typical wear reduction methods for diamond cutting of ferrous metals, including ultrasonic vibration cutting, cryogenic cutting, surface nitridation and plasma assisted cutting, etc. Relevant commercially available devices are introduced as well. Furthermore, future research trends in diamond tool wear suppression are discussed and examined.
The Locus of Enunciation as a Way to Confront Epistemological Racism and Decolonize Scholarly Knowledge
Authors: Diniz De Figueiredo Eduardo H , Martinez Juliana 
Published: November 2019

AbstractIn this forum article, we seek to contribute to the discussion initiated by Kubota (in the article entitled ‘Confronting epistemological racism, decolonizing scholarly knowledge: race and gender in applied linguistics’) on how to confront epistemological racism and to decolonize scholarly knowledge. We begin by endorsing Kubota’s three recommendations on how to achieve such goals, as we feel they are an important step to challenge the abyssal line that exists between knowledges that are considered scientific and universal and those that are regarded as peripheral. We then propose a fourth suggestion that we feel is important to complement what is put forth by Kubota: that scholars expose their own loci of enunciation (as well as that of others) in order to localize knowledges that are often taken as global and all-encompassing. By doing so, we argue, academics in applied linguistics and other fields are able to acknowledge the limits of their claims and to present their research in ways that can shift the universality of white Eurocentric knowledge.
Seabirds vary responses to supplemental food under dynamic natural prey availability and feeding aggregation composition
Authors: Maynard Laurie D , Carvalho Paloma C , Davoren Gail K 
Published: November 2019

Abstract
While foraging, a predator can feed solitarily or in a group. The net energy gain of joining a group is predicted to vary with prey patch quality, species-specific prey capture behavior, and the size and species composition of the predator group. In coastal Newfoundland, Canada, capelin (Mallotus villosus), a key forage fish, migrates inshore to spawn during the summer, resulting in a dramatic shift in prey availability. During July–August 2015–2017, we examined the numerical and behavioral responses of procellarid (Great Shearwater [Ardenna gravis], Sooty Shearwater [A. grisea], Northern Fulmar [Fulmarus glacialis]), and gull species (Herring Gull [Larus argentatus], Great Black-backed Gull [L. marinus]) to fish offal under varying capelin availability as well as flock size and composition using an at-sea experiment on the northeast Newfoundland coast. The experiment consisted of providing offal every 30 s (10-min experimental period), along with 10-min control periods before and after. We recorded the species-specific number of birds on the water, the number of birds simultaneously attempting to capture offal, and the number of successful attempts (“foraging success”). The number of birds on the water was lower during high capelin availability for all species, except for Northern Fulmar. The number of conspecifics simultaneously attempting to capture offal increased with the number of conspecifics on the water, but plateaued at different numbers (4–17) for most species. The species-specific proportion of successful attempts (i.e. foraging success) varied with flock size and composition (i.e. number of conspecifics, heterospecifics, species). Foraging success of Herring Gulls and fulmars were moderately affected by flock size and composition, suggesting that they may be dominant competitors. Findings suggest that seabirds rely more heavily on supplemental food sources, such as fisheries discards and offal, when natural prey availability declines, potentially resulting in a higher risk of by-catch during fisheries activities as forage fish stocks decline.
Episo: quantitative estimation of RNA 5-methylcytosine at isoform level by high-throughput sequencing of RNA treated with bisulfite
Authors: Liu Junfeng , An Ziyang , Luo Jianjun , Li Jing , Li Feifei , Zhang Zhihua 
Published: November 2019

Abstract

Motivation
RNA 5-methylcytosine (m5C) is a type of post-transcriptional modification that may be involved in numerous biological processes and tumorigenesis. RNA m5C can be profiled at single-nucleotide resolution by high-throughput sequencing of RNA treated with bisulfite (RNA-BisSeq). However, the exploration of transcriptome-wide profile and potential function of m5C in splicing remains to be elucidated due to lack of isoform level m5C quantification tool.

Results
We developed a computational package to quantify Epitranscriptomal RNA m5C at the transcript isoform level (named Episo). Episo consists of three tools: mapper, quant and Bisulfitefq, for mapping, quantifying and simulating RNA-BisSeq data, respectively. The high accuracy of Episo was validated using an improved m5C-specific methylated RNA immunoprecipitation (meRIP) protocol, as well as a set of in silico experiments. By applying Episo to public human and mouse RNA-BisSeq data, we found that the RNA m5C is not evenly distributed among the transcript isoforms, implying the m5C may subject to be regulated at isoform level.

Availability and implementation
Episo is released under the GNU GPLv3+ license. The resource code Episo is freely accessible from https://github.com/liujunfengtop/Episo (with Tophat/cufflink) and https://github.com/liujunfengtop/Episo/tree/master/Episo_Kallisto (with Kallisto).

Supplementary information
Supplementary data are available at Bioinformatics online.
LncRNA ST8SIA6-AS1 promotes proliferation, migration and invasion in breast cancer through the p38 MAPK signalling pathway
Authors: Fang Kai , Hu Caixia , Zhang Xiufen , Hou Yafei , Gao Danfeng , Guo Zijian , Li Lihua 
Published: November 2019

Abstract
Long non-coding RNAs (lncRNAs) are regarded as important functional regulators of various biological processes and are also known to be involved in the occurrence and development of human cancers, including breast cancer (BC). In our present study, the RNA expression profiling data for a large cohort of human BC samples were obtained from The Cancer Genome Atlas (TCGA) and Gene Expression Omnibus (GEO) databases, and the differentially expressed lncRNAs were screened out. We found that the expression of ST8SIA6-AS1 was elevated in BC tumour tissues compared with the adjacent normal tissues in the samples from the TCGA and GEO datasets, as well as in 138 BC tissue samples obtained by us. The high expression of ST8SIA6-AS1 was associated with estrogen receptor-negative, progesterone receptor-negative, advanced tumour-node-metastasis stage and worse survival in BC patients. In vitro functional studies revealed that high expression of ST8SIA6-AS1 promoted proliferation, invasion and migration of BC cell lines. The results of the in vivo studies indicated that upregulation of ST8SIA6-AS1 promoted xenograft tumour growth of BC. Mechanistically, ST8SIA6-AS1 regulated AKT1 and p38 mitogen-activated protein kinase (MAPK) gene expression by affecting their mRNA and protein levels, respectively, and it also affected the phosphorylation of AKT1 protein. Rescue experiments indicated that ST8SIA6-AS1 promoted BC cell proliferation, invasion and migration in a p38 MAPK signalling-mediated manner. Together, our data suggest that ST8SIA6-AS1 plays an important role in the occurrence and development of BC and may therefore serve as a promising therapeutic target.
Chronic infarct size after spontaneous coronary artery dissection: implications for pathophysiology and clinical management
Authors: Al-Hussaini Abtehale , Abdelaty Ahmed M S E K , Gulsin Gaurav S , Arnold Jayanth R , Garcia-Guimaraes Marcos , Premawardhana Diluka , Budgeon Charley , Wood Alice , Natarajan Nalin , Mangion Kenneth , Rakhit Roby , Hoole Stephen P , Johnson Thomas W , Berry Colin , Hudson Ian , Gershlick Anthony H , Ladwiniec Andrew , Kovac Jan , Squire Iain , Samani Nilesh J , Plein Sven , McCann Gerry P , Adlam David 
Published: November 2019

Abstract

Aims
To report the extent and distribution of myocardial injury and its impact on left ventricular systolic function with cardiac magnetic resonance imaging (CMR) following spontaneous coronary artery dissection (SCAD) and to investigate predictors of myocardial injury.

Methods and results
One hundred and fifty-eight angiographically confirmed SCAD-survivors (98% female) were phenotyped by CMR and compared in a case–control study with 59 (97% female) healthy controls (44.5 ± 8.4 vs. 45.0 ± 9.1 years). Spontaneous coronary artery dissection presentation was with non-ST-elevation myocardial infarction in 95 (60.3%), ST-elevation myocardial infarction (STEMI) in 52 (32.7%), and cardiac arrest in 11 (6.9%). Left ventricular function in SCAD-survivors was generally well preserved with small reductions in ejection fraction (57 ± 7.2% vs. 60 ± 4.9%, P &lt; 0.01) and increases in left ventricular dimensions (end-diastolic volume: 85 ± 14 mL/m2 vs. 80 ± 11 mL/m2, P &lt; 0.05; end-systolic volume: 37 ± 11 mL/m2 vs. 32 ± 7 mL/m2, P &lt;0.01) compared to healthy controls. Infarcts were small with few large infarcts (median 4.06%; range 0–30.9%) and 39% having no detectable late gadolinium enhancement (LGE). Female SCAD patients presenting with STEMI had similar sized infarcts to female Type-1 STEMI patients age &lt;75 years. Multivariate modelling demonstrated STEMI at presentation, initial TIMI 0/1 flow, multivessel SCAD, and a Beighton score &gt;4 were associated with larger infarcts [&gt;10% left ventricular (LV) mass].

Conclusion
The majority of patients presenting with SCAD have no or small infarctions and preserved ejection fraction. Patients presenting with STEMI, TIMI 0/1 flow, multivessel SCAD and those with features of connective tissue disorders are more likely to have larger infarcts.