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Migration Behavior of Impurity Iron in Silicon Melt Under Pulsed Electric Current

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Acta Metallurgica Sinica(English Letters) 2024年第5期37卷 889-903页

作者： Mengcheng Zhou Yaxiong Dai Changhao Liu shengli Ding Xinfang Zhang School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China Guangdong Zhongnan Iron&Steel Co. Ltd.Guangdong 512123China

The impurity iron in silicon material will seriously affect the photoelectric conversion efficiency of silicon solar ***,the traditional silicon purification method has the disadvantages of long cycle,high energy consumption and serious *** this study,an efficient and green pulsed electric current purification technology is *** electromigration effect of iron elements,the current density gradient driving of iron phase,and the gravity of iron phase all affect the migration behavior of iron phase in silicon melt under pulsed electric *** of the depth of electrode insertion into the silicon melt,the solubility of iron in silicon decreases under the pulsed electric current,which helps to form the iron *** the same time,the iron phase tends to sink toward the bottom under the influence of *** the electrode is shallowly inserted,a non-uniform electric field is formed in the silicon melt,and the iron phase is mainly driven by the current density gradient to accelerate sink toward the *** the electrode is fully inserted,an approximately uniform electric field is formed in the silicon melt,and iron elements are preferentially migrated to the cathode by electromigration,forming iron phase sinking at the *** study of impurity iron migration behavior in silicon melt under pulsed electric current provides a new approach for the purification of polycrystalline silicon.

关键词： Metallurgical silicon Pulsed electric current Iron-rich phase Current density gradient Electromigration

Step-over of strike-slip faults and overpressure fluid favor occurrence of foreshocks:Insights from the 1975 Haicheng fore-main-aftershock sequence,china

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Earthquake Research Advances 2024年第1期4卷 36-46页

作者： Xinglin Lei Zhiwei Wang shengli Ma Changrong He Geological Survey of Japan AISTTsukuba305-8567Japan State Key Laboratory of Earthquake Dynamics Institute of GeologyCEABeijing100029 China

This study analyzed and summarized in detail the spatial and temporal distributions of earthquakes,tidal responses,focal mechanisms,and stress field characteristics for the M 7.3 Haicheng earthquake sequence in February *** foreshocks are related to the main fault and the conjugate faults surrounding the extension step-over in the *** initiation timing of the foreshock clusters and the original time of the mainshock were clearly modulated by the Earth's tidal force and coincided with the peak of dilational volumetric tidal *** a plausible and testable hypothesis,we proposed a fluid-driven foreshock model,by which all observed seismicity features can be more reasonably interpreted with respect to the results of existing *** with some other known examples,the widely existing step-over along strike-slip faults and associated conjugate faults,especially for extensional ones in the presence of deep fluids,favor the occurrence of short-term *** clustered seismicity with characteristics similar to those of the studied case is not a sufficient and necessary condition for large earthquakes to occur under similar tectonic conditions,it undoubtedly has a warning significance for the criticality of the main *** testing would require quantification of true/false positives/negatives.

关键词： Haicheng earthquake Seismogenic fault ETAS Foreshock Deep fluid

Layer structure,petroleum accumulation system and characteristic of subtle reservoir of continental basins in eastern china:Taking Jiyang depression for example

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Science china Earth Sciences 2008年第S2期51卷 146-155页

作者： XU HuaiMin1,XU ZhaoHui1,ZHANG ShanWen2.WANG ZhiGao2.& WANG YongShi2.1 Faculty of Resource and Information Technology,china University of Petroleum,Beijing 102.49,china 2.2. Ltd. Co.,SINOPEC,dongying 2.7015,china 1. Faculty of Resource and Information Technology China University of Petroleum Beijing 102249 China 2. shengli oil field Ltd. Co. SINOPEC Dongying 257015 China

The concept and division method for petroleum accumulation system,based on layer structure,are presented according to characteristics of layer structure and reservoirs. The petroleum accumulation system of Jiyang depression can be divided into four levels,namely petroleum accumulation system combination,petroleum accumulation system,oil-gas reservoir combination and reservoir. The petro-leum accumulation system combination includes three types of genetic pattern: other-source bur-ied-ridge accumulation system combination in pre-Paleogene,medium-deep layer self-source accu-mulation system combination in Paleogene,and shallow layer other-source accumulation system combination in Neogene. This paper also describes the reservoir types and their distribution charac-teristics of different petroleum accumulation system combinations and their interior units.

关键词： accumulation system Jiyang depression basin structure reservoir genetic pattern

Numerical simulation and application of three-dimensional oil resources migration-accumulation of fluid dynamics in porous media

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Science china(Physics,Mechanics & Astronomy) 2008年第8期51卷 1144-1163页

作者： YUAN YiRang1 & HAN YuJi2.1 Institute of Mathematics,Shandong University,Ji’nan 2.0100,{2. 2.Physical Exploration Institute of shengli Petroleum Administration,{2. 2.702.,{2. Institute of Mathematics Shandong University Ji’nan 250100 China Physical Exploration Institute of shengli Petroleum Administration Dongying 257022 China

Numerical simulation of oil migration and accumulation is to describe the history of oil migration and accumulation in basin evolution. It is of great value in evaluation of oil resources and determination of the location and amount of oil deposits. Based on such actual conditions as the effects of fluid mechanics in porous media and 3-dimensional geology characteristics,a kind of modified method of second order upwind finite difference fractional steps implicit interactive scheme was put forward. As for the actual problem of dongying hollow,Huimin hollow,Tanhai region and Yangxin hollow in shengli Petroleum oil field,a numerical simulation test was carried out,and the result is basically coincident with the actual conditions. For the model problem,optimal order estimates were derived. Thus the well-known problem on oil resources was solved.

关键词： nonlinear mechanics of immiscible flow 3-dimensional migration-accumulation of oil resources upwind fractional steps numerical simulation numerical analysis

Jinning granodiorite and diorite deeply concealed in the central Tarim Basin

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Science china Earth Sciences 2005年第12期48卷 2061-2068页

作者： LI Yuejun1, 2. SONG Wenjie2. WU Genyao1, WANG Yifen1, LI Yuping2.& ZHENG Duoming2.1. Institute of Geology & Geophysics, Chinese Academy of Sciences, Beijing 10002., china 2. Tarim oil-{2. Company, Petrochina, Korla 841000, china 1. Institute of Geology & Geophysics Chinese Academy of Sciences 100029 Beijing China 2. Tarim oil-{2. Company 841000 Korla PetroChina China

The 72.0-m-deep Well Tacan 1 in the central Tarim Basin is the deepest in china. Purplish gray medium-grained granodiorite containing dark gray fine-grained diorite xenolith is revealed at the base of the well (7169―72.0 m), and they are results of the Jinning magmatic activities. Trace-element geochemistry and REE profiles of both rock types are similar, indicating that they are calc-alkaline series I-type granitoid. Proxies of diorite signify the development of a magmatic arc due to subduction at ca. 12.0 Ma. The granodiorite was formed before 890―932.Ma. However, more study is needed to clarify if the arc diorite represents a ca. 300 Ma extension of the subduction or a reactivation during the orogenic collision event at ca. 900 Ma.

关键词： diorite, granodiorite, magmatic arc, Jinning orogeny, Tarim Basin.

Targeted mutations of BnPAP2.lead to a yellow seed coat in Brassica napus L.

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Journal of Integrative Agriculture 2024年第2期23卷 724-730页

作者： Wei Huang Ruyu Jiao Hongtao Cheng shengli Cai Jia Liu Qiong Hu Lili Liu Bao Li Tonghua Wang Mei Li Dawei Zhang Mingli Yan Hunan Research Center of Heterosis Utilization in Rapeseed/Crop Research Institute Hunan Academy of Agricultural SciencesChangsha 410125China Hunan Key Laboratory of Economic Crops Genetic Improvement and Integrated Utilization/School of Life and Health Science Hunan University of Science and TechnologyXiangtan 411201China Key Laboratory of Biology and Genetic Improvement of oil Crops Ministry of Agriculture and Rural Affairs/Oil Crops Research InstituteChinese Academy of Agricultural SciencesWuhan 430062China

The yellow seed trait is preferred by breeders for its potential to improve the seed quality and commercial value of Brassica *** the present study,we produced yellow seed mutants using a CRISPR/Cas9 system when the two BnPAP2.homologs were knocked *** staining of the seed coat demonstrated that proanthocyanidin accumulation was significantly reduced in the pap2.double mutants and decreased specifically in the endothelial and palisade layer cells of the seed *** and metabolite profiling analysis suggested that disruption of the BnPAP2.genes could reduce the expression of structural and regulated genes in the phenylpropanoid and flavonoid biosynthetic *** broad suppression of these genes might hinder proanthocyanidin accumulation during seed development,and thereby causing the yellow seed trait in *** results indicate that BnPAP2.might play a vital role in the regulatory network controlling proanthocyanidin accumulation.

关键词： yellow seed BnPAP2 proanthocyanidins CRISPR/Cas9

Phase equilibrium calculation of multi-component gas separation of supersonic separator

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Science china(Technological Sciences) 2010年第3期53卷 435-443页

作者： BAO LingLing1, LIU ZhongLiang1, LIU HengWei1, JIANG WenMing1, ZHANG Ming1 & ZHANG Jian2.1 Education Ministry Key Lab of Enhanced Heat Transfer & Energy Conversation, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 10012.,{2. 2.shengli Engineering & Research Institute,{2. Ltd, SINOPEC, dongying 2.702.,{2. 1. Education Ministry Key Lab of Enhanced Heat Transfer & Energy Conversation College of Environmental and Energy Engineering Beijing University of Technology Beijing 100124 China2. Shengli Engineering & Research Institute Shengli Oil Field Ltd SINOPEC Dongying 257026 China

A mathematical model for phase equilibrium prediction of multi-component gas separation process inside a supersonic separator is established and an efficient numerical solution method is designed. The model and the numerical method are then used to predict the phase equilibrium characteristics and the separation performance of a field test natural gas supersonic purification separator. The predicted results are generally in good agreement with the field test measurements, which proves that the phase equilibrium model and the solution method are both reliable and accurate, and can be used for the prediction of the vapor and liquid phase equilibrium and the separation performance and the configuration optimization of supersonic separator.

关键词： supersonic separator BWRS equation vapor-liquid separation phase equilibrium

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济阳坳陷碳酸盐岩潜山油气藏勘探技术综述

石油学报 2004年第6期25卷 44-47页

作者：马立驰石油大学胜利油田有限公司地质科学研究院山东东营2.7001

针对碳酸盐岩潜山油气藏勘探这一公认的难题 ,介绍了济阳坳陷在近几年勘探实践中所形成的碳酸盐岩潜山勘探配套技术系列 ,如用重、震联合反演 ,三维叠前深度偏移和连片处理技术提高目标选区和圈闭描述的精度 ;采用井点储层分析描述技术... 详细信息

针对碳酸盐岩潜山油气藏勘探这一公认的难题 ,介绍了济阳坳陷在近几年勘探实践中所形成的碳酸盐岩潜山勘探配套技术系列 ,如用重、震联合反演 ,三维叠前深度偏移和连片处理技术提高目标选区和圈闭描述的精度 ;采用井点储层分析描述技术和井间储层横向预测技术提高储层预测能力 ;运用油气运聚模拟和模式识别技术 ,为勘探决策提供直接和间接的证据 ;应用多项钻井工艺技术和酸化压裂改造技术有效地保护和改善储层性能。这些技术的成功应用 ,有效地提高了济阳坳陷碳酸盐岩潜山勘探水平 ,勘探成效显著。

关键词：碳酸盐岩潜山油气藏圈闭描述储层预测油气判识井筒工艺济阳坳陷

Paleomagnetic results of the Cretaceous marine sediments in Tongyouluke, southwest Tarim

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Science china Earth Sciences 2005年第3期48卷 406-416页

作者： SHEN Zhongyue1, CHEN Hanlin1, FANG Dajun1, DING Jinghai1, ZHANG Shiben2. HUANG Zhibin2.& LI Meng2.1. Department of Earth Sciences, Zhejiang University, Hangzhou 31002. china 2. Tarim oil {2. Company, Petrochina Company Limited, Korla 830011, china 1. Department of Earth Sciences Zhejiang University 310027 Hangzhou China 2. Tarim oil {2. Company PetroChina Company Limited 830011 Korla China

Paleomagnetic and rock magnetic studies on samples of 18 sites from the Creta- ceous marine sedimentary rocks in the Tongyouluke section, Akto County, southwest Tarim, china show that the magnetic carriers of the Lower Cretaceous are dominated by hematite with some magnetite, while the magnetic carriers of the Upper Cretaceous are characterized by a combination of magnetite and titanomagnetite as well as hematite and goethite. Stepwise thermal demagnetization is performed and vector analysis is used to isolate magnetic components, which illustrates a single magnetic component or double magnetic components. The high temperature stable components are dual polarities and pass polarity test, reversal test and consistency test. The overall mean direction of the Lower Cretaceous is D = 2..0°, I = 42.0°, α95=6.5° with pole position at φ = 190.3°, λ=63.1°, dp=4.9°, dm=8.0°. The overall mean direction of the Upper Cretaceous is D = 2..1°, I = 39.4°, α95=11.2. with pole position at φ =190.9°, λ=60.3°, dp= 8.0°, dm=13.4°. Compared with the inclination of the Early Cretaceous from red beds of north Tarim, the contemporary inclination of southwest Tarim is 10.0°±7.8° sharper, but it is still 8.1° ±8.9°, shallower than that of Early Cretaceous basalts in southwest Tarim. Although these pa- leomagnetic data show slightly larger confidence limit, the paleolatitude of the marine Cretaceous tends to lie between that of terrestrial red beds and volcanic rocks.

关键词： Tarim paleomagnetism, Cretaceous, magnetic inclination, red beds, marine sedimentary rock.