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Energy saving analysis for CO_(2)–O_(2)mixed injection technology in converter steelmaking

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Journal of Iron and Steel Research International 2024年第5期31卷 1095-1103页

作者： Bao-chen Han Chun-liang Gao ya-qiang li Dan liu Guang-sheng Wei Rong Zhu Hebei Key Laboratory of Material Near-Net Forming Technology School of Material Science and EngineeringHebei University of Science and TechnologyShijiazhuang050018HebeiChina Department of Automotive Engineering Hebei Vocational University of Technology and EngineeringXingtai054000HebeiChina School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing100083China

Energy-saving in China's iron and steel industry still relies on the development and improvement of short-term energy saving ***,a special converter smelting technology incorporating energy saving was *** evaluate the energy-saving potential of the CO_(2)–O_(2)mixed injection(COMI)technology,collected production data were used to develop an improved techno-economic *** reveal that the technology can save energy through auxiliary material consumption,sensible heat of solid by-product,iron loss reduction,and energy *** application of COMI technology in an enterprise is cost effective,involving the energy saving potential of 0.206 GJ/t,the cost of conserved energy of−48.83 yuan/GJ,and a simple payback period of 0.35 year for a 60-million-yuan *** analysis shows that the investment cost and discount rate primarily influence the cost of conserved energy of the *** the discount rate increased,the cost of conserved energy also gradually ***,the COMI technology is an energy-saving technology with good development prospects.

关键词： Converter steelmaking COMI technology Energy saving Techno-economic model Investment cost

Associations between gene polymorphisms of thymidylate synthase with its protein expression and chemosensitivity to 5-fluorouracil in pancreatic carcinoma cells

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Chinese Medical Journal 2011年第2期124卷 262-267页

作者： ZHANG qiang ZHAO Yu-pei liAO Quan HU ya XU qiang ZHOU li SHU Hong Department of General Surgery Peking Union Medical College Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100730 China

Background Thymidylate synthase （TS） is a key regulatory enzyme for de novo DNA *** activity is also an important determinant of the response to chemotherapy with fluoropyrimidine prodrugs,and its expression may be affected by gene *** this study,we investigated the associations between polymorphisms of the TS gene and its protein expression,and the implications on the efficacy of 5-fluorouracil （5-FU） in pancreatic cancer *** Genotypes based on the 28-bp TS tandem repeat for pancreatic cell lines were determined by electrophoretic analysis of PCR products.A single nucleotide polymorphism （SNP） at nucleotide 12 of the second 28-bp repeat of the 3R allele was determined by nucleotide *** chemosensitivity of pancreatic carcinoma cells to 5-FU in vitro was evaluated using Cell Counting Kit-8 （CCK-8）.TS protein expression was analyzed by Western *** Seven pancreatic carcinoma cell lines had different genotypes in terms of the 28-bp TS tandem repeat,as follows：homozygous 2R/2R （T3M4 and BxPC-3 cells）,heterozygous 2R/3R （AsPC-1,Capan-1,and SU86.86）,and homozygous 3R/3R （PANC-1 and COLO357）.The optical density ratio of genotypes 3R/3R,2R/2R and 2R/3R was 1.393±0.374,0.568±0.032 and 0.561±0.056,*** with the 2R/3R or 3R/3R genotypes were further analyzed for the G to C SNP at nucleotide 12 of the second 28-bp repeat of the 3R allele,yielding heterozygous 2R/3Rc （AsPC-1,Capan-1,and SU86.86）,homozygous 3Rg/3Rg （COLO357） and homozygous 3Rc/3Rc （PANC-1）.The optical density ratio of homozygous 3Rg/3Rg cells and homozygous 3Rc/3Rc cells was 1.723±0.062 and 1.063±0.134,respectively,and this difference was statistically significant （P 〈0.05）.Cells with the 2R/2R and 2R/3R genotypes of TS were hypersensitive to 5-FU in vitro as compared with those with the 3R/3R *** Polymorphisms in the TS gene influenced its protein expression and affected sensitivity of 5-FU in seven pancreatic cancer cell ***

关键词： thymidylate synthase gene polymorphisms pancreatic carcinoma

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1 mm铁碳合金薄带气-固反应脱碳试验

钢铁 2017年第5期52卷 19-23,35页

作者：李亚强艾立群李强程荣陈鹏飞刘新亮华北理工大学冶金与能源学院河北唐山063009

为了研究1 mm铁碳合金薄带气-固反应脱碳动力学以及探索不同温度对薄带脱碳效果的影响。以初始碳质量分数为4.2%、厚度为1 mm的铁碳合金薄带为研究对象,在气体流量为400 mL/min、p_(H_2O)/p_(H_2)为0.85的Ar-H_2-H_2O混合气氛条件下,以... 详细信息

为了研究1 mm铁碳合金薄带气-固反应脱碳动力学以及探索不同温度对薄带脱碳效果的影响。以初始碳质量分数为4.2%、厚度为1 mm的铁碳合金薄带为研究对象,在气体流量为400 mL/min、p_(H_2O)/p_(H_2)为0.85的Ar-H_2-H_2O混合气氛条件下,以高温气-固反应形式开展脱碳试验研究。结果表明,提高脱碳温度可以明显提高脱碳效果,在1 413 K温度条件下脱碳30 min可以将碳脱至0.12%。宏观脱碳反应近似为表观一级反应,脱碳反应表观活化能为157.9 k J/mol。脱碳反应初期主要受控于表面化学反应,后期碳在薄带内部的扩散成为主要限制性环节。

关键词：铁碳合金薄带气-固反应脱碳表观活化能

Xanthogranulomatous Cholecystitis and Misdiagnosis Analysis

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Chinese Medical Journal 2015年第12期128卷 1700-1702页

作者： ya-qiang li Jian Song Zheng-Xin liu Dong-Yuan Xie Tao Jiang Guang-Hui Wei Hua-Chong Ma Jian-Xin Wang Mu-Lan Jin Department of Gastroenterology Beijing Chao-Yang Hospital Capital Medical University Beijing 100020 China Department of Radiology Beijing Chao-Yang Hospital Capital Medical University Beijing 100020 China Department of General Surgery Beijing Chao-Yang Hospital Capital Medical University Beijing 100020 China Department of Pathology Beijing Chao-Yang Hospital Capital Medical University Beijing 100020 China

INTRODUCTION Gastric sub-epithelial masses （SEMs） are relatively common findings when receiving gastric endoscopy. It is a mass, bulge, or impression visible. Computed tomography （CT） and magnetic resonance imagin... 详细信息

关键词： Xanthogranulomatous Cholecystitis Gastric Sub-epithelial Masses Gastrointestinal Stromal Tumor

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高厚度铝基微带板的加工工艺技术

印制电路信息 2008年第7期16卷 36-37页

作者：强娅莉陕西凌云电器有限公司陕西宝鸡721006

文章通过对高厚度铝基微带板的加工工艺试验的总结,提出了加工工艺,解决了加工中的难题,为高精度特种印制板的批量生产奠定了基础。

关键词：高厚度铝基微带板加工工艺技术

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多层印制板加工中翘曲的原因分析及改善措施

电子工艺技术 2008年第6期29卷 343-345页

作者：强娅莉陕西凌云电器有限公司陕西宝鸡721006

随着电子产品向智能化、小型化以及集成电路器件密集化发展,多层板和高密度电路板的应用越来越多。这些产品普遍采用表面安装技术,这对多层印制板平整度的要求更加严格,但在多层印制板的层压等加工过程中容易出现板面翘曲问题,对多层印... 详细信息

随着电子产品向智能化、小型化以及集成电路器件密集化发展,多层板和高密度电路板的应用越来越多。这些产品普遍采用表面安装技术,这对多层印制板平整度的要求更加严格,但在多层印制板的层压等加工过程中容易出现板面翘曲问题,对多层印制板加工中出现翘曲的原因进行了分析,重点从制作时层压的工艺过程控制方面进行论述,提出了改进措施。这些措施经生产验证,可以明显改善多层印制板的加工质量。

关键词：多层印制板翘曲改善措施

Investigation of bubbles escape behavior from low basicity mold flux for high-Mn high-Al steels using 3D X-ray microscope

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 102-110页

作者： qiang liu Xiang li Shen Du Ming Gao yanbin Yin Jiongming Zhang State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

During the continuous casting process of high-Mn high-Al steels,various types of gases such as Ar need to escape through the top of the *** which,the behavior of bubbles traversing the liquid slag serves as a restrictive link,closely associated with viscosity and the thickness of liquid *** contrast to two-dimensional surface observation,three-dimensional(3D)analysis method can offer a more intuitive,accurate,and comprehensive ***,this study employs a 3D X-ray microscope(3D-XRM)to obtained spatial distribution and 3D morphological characteristics of residual bubbles in mold flux under different basicity of liquid slag,different temperatures,and different holding *** results indicate that as basicity of slag increases from 0.52 to 1.03,temperature increases from 1423 to 1573 K,the viscosity of slag decreases,the floating rate of bubbles *** addition,when holding time increases from 10 to 30 s,the bubbles floating distance increases,and the volume fraction and average equivalent sphere diameter of the bubbles solidified in the mold flux gradually *** one word,increasing the basicity,temperature,and holding time leading to an increase in the removal rate of bubbles especially for the *** findings of bubbles escape behavior provide valuable insights into optimizing low basicity mold flux for high-Mn high-Al steels.

关键词： mold flux low basicity bubbles three-dimensional X-ray microscope viscosity

Physical Layer Security Scheme With AoI-Awareness for Industrial IoT Based on Covert Communications

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IEEE/CAA Journal of Automatica Sinica 2025年第1期 276-278页

作者： yaping li Zhi-Xin liu Jia-Wei Su ya-Zhou Yuan the Key Laboratory of Industrial Computer Control Engineering of Hebei Province Yanshan University

Dear Editor,Industrial Internet of things(IIoT) is a typical application of cyberphysical system(CPS). In the IIoT, wireless communication is an inevitable trend to replace the deployment-limited wired transmission for cases with large-scale and mobile devices. However, wireless communication gives rise to critical issues related to physical security, such as malicious detections and attacks [1].

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Recent development in electrode design for wide-temperature supercapacitors

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Science China Chemistry 2025年第1期 96-117页

作者： Jianhong liu qiang Zhou Yuxiao lin Xinsheng Zhao Guangmin Zhou Xiaoxiao li School of Physics and Electronic Engineering Jiangsu Normal University Tsinghua-Berkeley Shenzhen Institute & Tsinghua Shenzhen International Graduate School Tsinghua University

An ever-increasing market demand has stimulated the soaring enthusiasm of researchers to develop wide-temperature supercapacitors(SCs). The active electrode is one of the most important parts of SC, which is directly related to the energy density,power transmission and long-term cyclability of the device in the wide-temperature environment. Compared with the SC electrodes aimed for room-temperature application, the SC electrodes for operating at wide-temperature scene often face greater challenges. In this review, the main challenges of SC electrodes under various temperature conditions, including low, high and cross-fade temperatures, are summarized. The relevant performance decay and failure mechanisms of wide-temperature SC electrodes are analyzed. In addition, this review deals with the recent studies and developments in robust wide-temperature SC electrodes with respect to the rational design of electrode structures and the exploitation of advanced active materials. Finally, the future directions for exploring reliable wide-temperature SCs are also proposed.

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