scholarly journals Formation and evolution of Weiyuan-Anyue tensional corrosion trough in Sinian system, Sichuan Basin

2015 ◽  
Vol 42 (1) ◽  
pp. 29-36 ◽  
Author(s):  
Zhongquan LI ◽  
Ji LIU ◽  
Ying LI ◽  
Wenyan HANG ◽  
Haitao HONG ◽  
...  
Keyword(s):  
Sichuan Basin ◽  
Formation And Evolution ◽  
Sinian System

Size-resolved hygroscopic behaviour and mixing state of submicron aerosols in a megacity of Sichuan Basin during pollution and fireworks episodesn during pollution and fireworks episodes

2020 ◽  
Author(s):  
Liang Yuan
Keyword(s):  
Sichuan Basin ◽  
Probability Distributions ◽  
Aerosol Particles ◽  
Sampling Period ◽  
Diurnal Patterns ◽  
Hygroscopic Properties ◽  
New Year’S Eve ◽  
Formation And Evolution ◽  
Aerosol Emissions ◽  
Parameter Values

<p>    In situ measurements are performed to study the size-resolved hygroscopic behaviour of submicron aerosols during pollution and fireworks episodes in winter from late January to February 2019 in Chengdu, a megacity in Sichuan Basin, using a humidity tandem differential mobility analyser (H-TDMA). The H-TDMA is operated at a relative humidity of 90% with dry aerosol diameters between 40 and 200 nm. Three modes of aerosol particles, including nearly hydrophobic mode (NH), less hygroscopic mode (LH), and more hygroscopic mode (MH), are found in the probability distributions of the growth factor (GF-PDF) during the campaign. The GF-PDF shows that aerosol particles are usually externally mixed. The average ensemble mean hygroscopicity parameter values (<em>κ</em><sub>Mean</sub>) over the entire sampling period are 0.16, 0.19, 0.21, 0.23, and 0.26 for aerosols with diameters of 40, 80, 110, 150, and 200 nm, respectively. These averages are lower than those in Shanghai and Nanjing. <em>κ</em><sub>Mean</sub> for aerosols larger than 110 nm, however, are higher than those in Beijing and Guangzhou during winter. Distinct diurnal patterns for all measured sizes are observed for the number fractions of the NH (<em>NF</em><sub>NH</sub>) and MH (<em>NF</em><sub>MH</sub>) modes as well as <em>κ</em>-PDF and <em>κ</em><sub>Mean</sub>. The <em>NF</em><sub>NH</sub> values are lower, but <em>κ</em><sub>Mean</sub> exhibits peak values during daytime. More aerosols are internally mixed because of photochemical ageing during daytime. The number fraction of LH (<em>NF</em><sub>LH</sub>) for the 40-nm diameter aerosols in clean periods (CPs) is larger than that in the pollution episode (PEs) because of the increasing amount of SOA formation. More aerosols of diameters larger than 80 nm are internally mixed during CPs and stage of contaminant accumulation, resulting in higher <em>κ</em><sub>Mean</sub> values compared to those in PEs. The aerosol emissions of fireworks that accumulate during the Chinese New Year's Eve contribute to the slow and continuous increasing trend in<em> κ</em><sub>Mean</sub> with average values of 0.19, 0.19, 0.21,0.23, and 0.27 for the 40, 80, 110, 150, and 200-nm diameter aerosols, respectively. These values are higher than those during the pre- and post-fireworks days. The hygroscopic properties of submicron aerosols in Chengdu are essential for understanding the formation and evolution of severe haze events in Sichuan Basin.</p>

scholarly journals Formation and evolution of Sinian oil and gas pools in typical structures, Sichuan Basin, China

2012 ◽  
Vol 9 (2) ◽  
pp. 129-140 ◽  
Author(s):  
Haifeng Yuan ◽  
Jiaju Liang ◽  
Deyu Gong ◽  
Guosheng Xu ◽  
Shugen Liu ◽  
...  
Keyword(s):  
Sichuan Basin ◽  
Oil And Gas ◽  
Formation And Evolution

scholarly journals Formation and evolution of intraplatform basin from the late Sinian to early Cambrian in Sichuan Basin, China

2017 ◽  
Vol 2 (1) ◽  
pp. 41-53 ◽  
Author(s):  
Hui Zhou ◽  
Wei Li ◽  
Baomin Zhang ◽  
Jingjiang Liu ◽  
Shenghui Deng ◽  
...  
Keyword(s):  
Sichuan Basin ◽  
Early Cambrian ◽  
Formation And Evolution

The Characteristics of X Formation Biohermal Reservoir in DMP Structure in Sichuan Basin

2014 ◽  
Vol 962-965 ◽  
pp. 138-141
Author(s):  
Jiang Min Du ◽  
Xiao Li Zhang ◽  
Chao Li ◽  
Yan Qiu Yu ◽  
Xi Zheng ◽  
...  
Keyword(s):  
Sichuan Basin ◽  
Pore Space ◽  
Physical Property ◽  
Sedimentary Facies ◽  
Control Factors ◽  
Drilling Data ◽  
Crystalline Dolomite ◽  
Formation And Evolution ◽  
And Control ◽  
Research Show

Based on the logging and drilling data of DMP structure in Sichuan basin.We study the characteristics and control factors of biohermal reservoir of X formation deeply. The research show that the biohermal reservoir is comprised of biohermal dolostone and fine-medium crystalline dolomite mainly;Intergranular pore,dissolved cave and pore space are mainly kinds of reservoir space;The physical property of the reservoir is not very good,with the low porosity and low permeability.Fractures grow well in reservoir, forming a kind of fractured reservoir.The formation and evolution of the reservoir is controlled by the sedimentary facies, tectonization and diagenesis.

scholarly journals Formation and Evolution Mechanisms of Severe Haze Pollution in the Sichuan Basin, Southwest China

2020 ◽  
Vol 20 (11) ◽  
pp. 2557-2567
Author(s):  
Xianyu Yang ◽  
Yaqiong Lu ◽  
Xinsheng Zhu ◽  
Jianjun He ◽  
Qing Jiang ◽  
...  
Keyword(s):  
Sichuan Basin ◽  
Southwest China ◽  
Haze Pollution ◽  
Formation And Evolution ◽  
The Sichuan Basin

AFM study of the dynamics of α-alumina surface faceting during high-temperature processing

1995 ◽  
Vol 53 ◽  
pp. 334-335 ◽  
Author(s):  
Michael W. Bench ◽  
Jason R. Heffelfinger ◽  
C. Barry Carter
Keyword(s):  
High Temperature ◽  
Thin Foil ◽  
Sem Analysis ◽  
Conductive Coatings ◽  
Force Microscopy ◽  
Minimal Sample ◽  
Atomic Force ◽  
Formation And Evolution ◽  
High Temperature Processing ◽  
Nominal Surface

To gain a better understanding of the surface faceting that occurs in α-alumina during high temperature processing, atomic force microscopy (AFM) studies have been performed to follow the formation and evolution of the facets. AFM was chosen because it allows for analysis of topographical details down to the atomic level with minimal sample preparation. This is in contrast to SEM analysis, which typically requires the application of conductive coatings that can alter the surface between subsequent heat treatments. Similar experiments have been performed in the TEM; however, due to thin foil and hole edge effects the results may not be representative of the behavior of bulk surfaces.The AFM studies were performed on a Digital Instruments Nanoscope III using microfabricated Si3N4 cantilevers. All images were recorded in air with a nominal applied force of 10-15 nN. The alumina samples were prepared from pre-polished single crystals with (0001), , and nominal surface orientations.

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