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Technological investigation on the Short Stroke Width Control Rolling in the Rougher Mills of Hot Strip Continuous Rolling Mill Train

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Journal of Iron and Steel Research International 1995年第1期2卷 22-25页

作者： SUN Ben Rong SHUAI Min YANG Xin Fa fan mei guang LI Yi Ying ZHOU Ren Yi SHEN Jian Guo Central Iron and Steel Research Institute MMI Baoshan Iron and Steel Co.

According to technological requirement of hot charge rolling and hot direct rolling,in this paper,we investigated the technology of the width control rolling in the rougher mills of hot strip continuous rolling mill *** the basis of improving width range of continuous casting of slab,we obtained a good result of greatly increasing the yield of slab→coil is achieved.

关键词： hot charge rolling hot direct rolling short stroke width control rolling

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Dynamic Regulation of Hydrogen Bonding Networks and Solvation Structures for Synergistic Solar‑Thermal Desalination of Seawater and Catalytic Degradation of Organic Pollutants

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Nano-Micro Letters 2025年第2期17卷 548-565页

作者： Ming‑Yuan Yu Jing Wu guang Yin fan‑Zhen Jiao Zhong‑Zhen Yu Jin Qu Beijing Key Laboratory of Advanced Functional Polymer Composites Beijing University of Chemical TechnologyBeijing 100029People’s Republic of China State Key Laboratory of Organic‑Inorganic Composites College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029People’s Republic of China

Although solar steam generation strategy is efficient in desalinating seawater,it is still challenging to achieve continuous solar-thermal desalination of seawater and catalytic degradation of organic ***,dynamic regulations of hydrogen bonding networks and solvation structures are realized by designing an asymmetric bilayer membrane consisting of a bacterial cellulose/carbon nanotube/Co_(2)(OH)_(2)CO_(3)nanorod top layer and a bacterial cellulose/Co_(2)(OH)_(2)CO_(3)nanorod(BCH)bottom ***,the hydrogen bonding networks inside the membrane can be tuned by the rich surface–OH groups of the bacterial cellulose and Co_(2)(OH)_(2)CO_(3)as well as the ions and radicals in situ generated during the catalysis ***,both SO_(4)^(2−)and HSO_(5)−can regulate the solvation structure of Na^(+)and be adsorbed more preferentially on the evaporation surface than Cl^(−),thus hindering the de-solvation of the solvated Na^(+)and subsequent nucleation/growth of ***,the heat generated by the solar-thermal energy conversion can accelerate the reaction kinetics and enhance the catalytic degradation *** work provides a flow-bed water purification system with an asymmetric solar-thermal and catalytic membrane for synergistic solar thermal desalination of seawater/brine and catalytic degradation of organic pollutants.

关键词： Solar steam generation Seawater desalination Catalytic degradation Bacterial cellulose Cobalt hydroxycarbonate nanorods

杰斐逊的联邦制思想与“国内改进”政策的延滞

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史学集刊 2011年第5期 103-109页

作者：叶凡美梁红光解放军外国语学院美国研究中心河南洛阳471003 陕西师范大学历史文化学院陕西西安710062

对杰斐逊而言,联邦制意味着联邦政府和各州政府共同分享国家主权,其中,联邦政府享有管理对外事务(包括国际和州际事务)的权力,而各州政府则享有管理对内事务的权力。他主张对宪法进行"严格解释",强调联邦政府的权力严格地限于宪法中所... 详细信息

对杰斐逊而言,联邦制意味着联邦政府和各州政府共同分享国家主权,其中,联邦政府享有管理对外事务(包括国际和州际事务)的权力,而各州政府则享有管理对内事务的权力。他主张对宪法进行"严格解释",强调联邦政府的权力严格地限于宪法中所列举的范围。在杰斐逊执政时期,他赞同联邦政府进行"国内改进"(即交通建设),但是,由于宪法并没有明确授予联邦政府进行"国内改进"的权力,他强调必须通过一项宪法修正案,明确授予联邦政府有关权力,其目的在于维护他关于联邦制的一贯主张,维护联邦政府和各州政府之间的权力划分。主要由于杰斐逊的联邦制思想的阻碍,联邦政府的"国内改进"政策始终延滞不前。

关键词：杰斐逊联邦制 “国内改进”

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安塞油田化子坪区长2油藏油井措施选井研究

内蒙古石油化工 2010年第15期36卷 117-119,123页

作者：樊光梅谢远伟罗纯长庆油田采油四厂陕西靖边718500 长江大学石油工程学院湖北荆州434023

安塞油田化子坪区长2油藏储层物性差,非均质性强,油藏同时受构造和岩性控制,油井单井产量低,递减大,为了降低老油田递减,对该区油井实施了压裂、酸化和补孔压裂,取得了较好的效果,本文重点分析对比油井各种措施情况下的措施依据,并提出... 详细信息

安塞油田化子坪区长2油藏储层物性差,非均质性强,油藏同时受构造和岩性控制,油井单井产量低,递减大,为了降低老油田递减,对该区油井实施了压裂、酸化和补孔压裂,取得了较好的效果,本文重点分析对比油井各种措施情况下的措施依据,并提出了下步选井意见。

关键词：低渗透油藏单井产量措施有效率

Phase fraction evolution in hot working of a two-phase titanium alloy： experiment and modeling

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Rare Metals 2017年第10期36卷 769-779页

作者： Xiao-guang fan Huo-Jun Zheng Peng-Fei Gao mei Zhan Wen-Jia mei School of Materials Science and Engineering Northwestern Polytechnical University Xi'an 710072 China State Key Laboratory of Solidification Processing Northwestern Polytechnical University Xi'an 710072 China

In the present work, the coupled effects of initial structure and processing parameters on microstructure of a two-phase titanium alloy were investigated to predict the microstructural evolution in multiple hot working. It is found that microstructure with different constituent phases can be obtained by regulating the initial structure and hot working conditions. The variation of deformation degree and cooling rate can change the morphology of the con- stituent phases, but do not alter the phase fraction. The phase transformation during heating and holding determi- nes the phase fraction for a certain initial structure. ^--at-~3 transformation occurs during heating and holding. [3 to ct transformation leads to a significant increase in content and size of lamellar ~. The ct to [3 transformation occurs simultaneously in equiaxed at and lamellar ct. The thickness of lamellar ~t increases with temperature, which is caused by the vanishing of fine a lamellae due to phase transformation and coarsening by termination migration. By assuming a quasi-equilibrium phase transformation in heating and holding, a modeling approach is proposed for predicting microstructural evolution. The three stages of phase transformation are modeled separately and combined to predict the variation of phase fraction with temperature. Model predictions agree well with the experimental results.

关键词： Titanium alloy Hot working Microstructure Modeling

A pixel-level local contrast measure for infrared small target detection

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Defence Technology（防务技术） 2022年第9期18卷 1589-1601页

作者： Zhao-bing Qiu Yong Ma fan fan Jun Huang Ming-hui Wu Xiao-guang mei School of Electronic Information and the School Aerospace Research Wuhan UniversityWuhan430074China

Infrared(IR) small target detection is one of the key technologies of infrared search and track(IRST)systems. Existing methods have some limitations in detection performance, especially when the target size is irregular or the background is complex. In this paper, we propose a pixel-level local contrast measure(PLLCM), which can subdivide small targets and backgrounds at pixel level *** pixel-level segmentation, the difference between the target and the background becomes more obvious, which helps to improve the detection performance. First, we design a multiscale sliding window to quickly extract candidate target pixels. Then, a local window based on random walker(RW) is designed for pixel-level target segmentation. After that, PLLCM incorporating probability weights and scale constraints is proposed to accurately measure local contrast and suppress various types of background interference. Finally, an adaptive threshold operation is applied to separate the target from the PLLCM enhanced map. Experimental results show that the proposed method has a higher detection rate and a lower false alarm rate than the baseline algorithms, while achieving a high speed.

关键词： Infrared(IR)small target Irregular size Random walker(RW) Pixel-level local contrast measure(PLLCM)

Irradiation effects in polycarbonate induced by 2.1 GeV Kr ions

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Nuclear Science and Techniques 2003年第4期14卷 242-245页

作者： TIANHui-Xian JINYun-fan ZHUZhi-Yong SUNYou-mei WANGZhi-guang InstituteofAppliedPhysicsandComputationalMathematics Beijing100088 InstituteofModernPhysics theChineseAcademyofSciencesLanzhou730000

Polycarbonate foil stacks were irradiated with 2.1 GeV Kr ions under vacuum at room *** modifications in chemical structure induced by the irradiation were studied by means of Fourier transform infra-red (FTIR) and ultraviolet visible (UV/VIS) spectroscopies. FTIR measurements reveal that material degradationsthrough bond breaking are the main effects. Alkyne end groups are produced by the irradiation. UV/VIS measure-ments indicate a shifting of the absorption edge from ultraviolet towards visible, and a strong increase of absorbancein the ultraviolet and visible regions. The changes in absorbance induced by the irradiation at wavelengths of 380 nm,450 nm and 500 nm scale well with Sne (Se is electronic energy loss) where the value of n increases from 1.69 to 2.02with increasing of the wavelength. The results are briefly discussed.

关键词：辐射防护聚碳酸酯氪 Fourier变换降解机制锗

A New Method for Electromagnetic Time Reversal in a Complex Environment

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Chinese Physics Letters 2012年第2期29卷 105-107页

作者： KONG Qi SHI Qing-fan YU guang-Ze ZHANG mei School of Physics Beijing Institute of TechnologyBeijing 100081 School of Computer Guangdong Industrial UniversityGuangzhou 510006

A new time reversal method is proposed to infer the location of an unknown extending target in a complex *** our method,the wavelet analysis and scalogram of energy density are first introduced into the electromagnetic time reversal process to improve the accuracy and to eliminate *** computation results show that the new technique can refocus the unknown target better than using traditional time reversal.

关键词： Electromagnetic eliminate Complex

Study on Level Fluctuation of Twin Roll Strip Caster by Water Modeling

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Journal of Iron and Steel Research International 2002年第2期9卷 10-14页

作者： WEN guang-hua ZHU Ming-mei DING Pei-dao HE Jun-fan Chongqing University

An industrial trial was conducted on a billet casting machine at Atlas Steel, Canada, during which a mould was instrumented with 52 thermocouples. The measured data of ten heats were collected to determine mould wall temperature profiles for different steel grades at different casting speeds. Based on these data, heat fluxes were calculated with inverse heat conduction model. Heat fluxes for different operating parameters were compared and analyzed.

关键词： stainless steel heat flux high speed continuous casting