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干熄焦一次除尘器挡墙结构的研究

河南冶金 2024年第3期32卷 18-20页

作者：崔小丽王世俊安阳钢铁股份有限公司河南安阳455004

对安钢焦化厂140 t/h干熄焦一次除尘器挡墙倒塌的原因进行了分析,通过改进一次除尘器挡墙耐火砖的外形结构,增加挡墙上部砌体嵌入拱顶的深度等措施,提高了一次除尘器挡墙的稳定性,保护了锅炉炉管,延长了干熄焦除尘系统的寿命。

关键词：干熄焦一次除尘器挡墙

Microstructural Characterization and Mechanical Properties of VB_2/A390 Composite Alloy

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Journal of Materials Science & Technology 2015年第10期31卷 1027-1033页

作者： xiaoli cui Yuying Wu Xiangfa Liu Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials Ministry of EducationShandong University

In this work, we make the best use of the vanadium element; a series of A1-V-B alloys and VB2/A390 composite alloys were fabricated. For Ak-10V-6B alloy, the grain size of VB2 can be controlled within about 1 μm and is distributed uniformly in the AI matrix. Further, it can be found that VB2 promises to be a useful reinforcement particle for piston alloy. The addition of VB2 can improve the mechanical properties of the A390 composite alloys significantly. The results show that with 1 % VB2 addition, A390 composite alloy exhibits the best performance. Compared with the A390 alloy, the coefficient of thermal expansion is 13.2 × 10^-6 K-1, which decreased by 12.6%; the average Brinell hardness can reach 156.5 HB, wear weight loss decreased by 28.9% and ultimate tensile strength at 25℃ （UTS25 ℃） can reach 355 MPa, which increased by 36.5%.

关键词： AI alloy matrix composites Mechanical properties Particle-reinforced composites Microstructural characterization

鄂尔多斯盆地吴起—安塞地区长81亚段砂岩储层致密成因及其对油气藏分布的影响

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天然气地球科学 2024年第10期35卷 1789-1799页

作者：叶博马艳丽崔小丽辛红刚雒斌朱立文中国石油长庆油田分公司勘探开发研究院陕西西安710018 低渗透油气田勘探开发国家工程实验室陕西西安710018

鄂尔多斯盆地吴起—安塞地区上三叠统长81亚段尚未实现规模开发,储层致密是其主要原因之一。为明确长81亚段储层致密的原因,基于沉积学、岩石学、储层成岩作用及孔隙演化等理论,分析野外露头、钻井、测井及岩心分析试验等资料,并将研究... 详细信息

鄂尔多斯盆地吴起—安塞地区上三叠统长81亚段尚未实现规模开发,储层致密是其主要原因之一。为明确长81亚段储层致密的原因,基于沉积学、岩石学、储层成岩作用及孔隙演化等理论,分析野外露头、钻井、测井及岩心分析试验等资料,并将研究区与陇东、姬塬地区进行对比以探讨长81亚段储层致密的成因。结果表明:吴起—安塞地区长81亚段砂岩碎屑颗粒搬运距离远、粒度小,塑性组分含量高;分流河道及水下分流河道微相沉积形成一套细粒砂岩储层;压实作用、伊利石黏土矿物和碳酸盐胶结作用使砂岩整体变致密;微观孔隙结构整体表现为小孔隙、微喉道,大于10μm的微米级孔隙构成了油气储集的主要空间。研究认为,远源三角洲形成的细粒沉积、强烈的黏土矿物和碳酸盐胶结作用是造成吴起—安塞地区长81亚段储层致密的主要原因。这一认识对指导研究区及类似地区致密砂岩油气勘探具有重要意义。

关键词：鄂尔多斯盆地沉积体系延长组8段(长8段) 致密储层成岩作用孔隙结构

Polyoxometalate derived p-n heterojunction for optimized reaction interface and improved HER

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Chinese Chemical Letters 2023年第3期34卷 494-497页

作者： xiaoli cui Yunmeng Sun Xinxin Xu Department of Chemistry College of ScienceNortheastern UniversityShenyang 110819China Institute for Frontier Technologies of Low-Carbon Steelmaking Northeastern UniversityShenyang 110819China

MoS_(2) is a typical electrocatalyst for hydrogen evolution reaction(HER),but the HER activity is spoilt by intensive adsorption towards H^(*),which requires further *** n-type MoS_(2),the construction of p-n heterojunction with p-type MoO_(3) can reverse this situation,because inner electronic field in p-n heterojunction can facilitate H^(*) *** on this hypothesis,p-n heterojunction is built between MoS_(2) and MoO_(3) with polyoxometalate compound as *** obtained MoO_(3)/MoS_(2) exhibits excellent HER activity,which only requires 68 mV to obtain 10 mA/cm^(2).With MoO_(3)/MoS_(2) as cathode material and Zn slice as anode,Zn-H^(+)battery is *** open circuit voltage achieves 1.11 V with short circuit current 151.4 mA/cm^(2).The peak power density of this Zn-H^(+) battery reaches 47.6 mW/cm^(2).When discharge at 10 mA/cm^(2),the specific capacity and energy density reach 728 mAh/g and 759 Wh/*** this process,H_(2) production rate of Zn-H^(+) battery achieves 364μmol/h with Faradic efficiency 97.8%.It realizes H_(2) production and electricity generation simultaneously.

关键词： Polyoxometalate p-n Heterojunction Electrocatalysis HER Zn-H~+battery

结核分枝杆菌特异性细胞因子干扰素-γ与白细胞介素-2联合检测在活动性肺结核诊断中的应用

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中国热带医学 2024年第9期24卷 1136-1141页

作者：张欣崔晓利武航邬霞王海东郑会强西安市胸科医院检验科陕西西安710100

目的评价结核分枝杆菌(Mycobacterium tuberculosis,MTB)特异性细胞因子干扰素-γ(interferon-γ,IFN-γ)和白细胞介素-2(interleukin-2,IL-2)双因子联合检测在活动性肺结核(active tuberculosis)中的诊断效能。方法收集西安市胸科医院2023年6—12月住院患者292例,根据临床诊断分为活动性肺结核组160例(男性81例,女性79例),非结核性肺部疾病组132例(男性72例,女性60例)。对所纳入的292例患者进行MTB特异性双因子(IFN-γ、IL-2)检测、分枝杆菌培养(BACTEC MGIT 960液体培养)、实时荧光定量反转录PCR(quantitative reverse transcriptase-mediated PCR,qRT-PCR)检测、结核分枝杆菌RNA恒温扩增检测(simultaneous amplification and testing for Mycobacterium tubercu⁃losis,SAT-TB)和痰涂片检查,评价MTB特异性双因子的诊断效能,并比较双因子血清学方法、细菌学方法(分枝杆菌培养、痰涂片检查)和分子生物学方法(qRT-PCR、SAT-TB)对诊断活动性肺结核的差异。结果以临床诊断为标准,MTB特异性双因子检测的灵敏度、特异度、阳性预测值、阴性预测值和约登指数分别为:80.63%、80.30%、83.23%、77.37%和0.61。与qRT-PCR、SAT-RNA、痰涂片检查和分枝杆菌培养相比,双因子检测的灵敏度(χ^(2)=66.117、96.008、103.789、76.650,均P0.05)。方法学比较中,血清学组的阳性率为80.63%,高于细菌学组(31.20%)和分子生物学组(38.46%),差异均具有统计学意义(χ^(2)=56.101,74.645;均P<0.001)。结论MTB特异性双因子检测方法对活动性肺结核的诊断具有较高的灵敏度,可作为诊断活动性肺结核的免疫学标志物,有助于提高诊断的准确率。

关键词：结核分枝杆菌特异性细胞因子白细胞介素-2 活动性肺结核诊断效能灵敏度

Fast Sentiment Analysis Algorithm Based on Double Model Fusion

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Computer Systems Science & Engineering 2021年第1期36卷 175-188页

作者： Zhixing Lin Like Wang xiaoli cui Yongxiang Gu Sanming University Network CenterSanming365004 College of Mathematics and Informatics Fujian Normal UniversityFuzhou350007China Chengdu Institute of Computer Applications Chinese Academy of SciencesChengdu610041China University of Chinese Academy of Sciences Beijing100049China Sichuan Rainbow Consulting&Software Co. Ltd.Chengdu610041China

Nowadays,as the number of textual data is exponentially increasing,sentiment analysis has become one of the most significant tasks in natural language processing(NLP)with increasing *** Chinese sentiment analysis algorithms cannot make full use of the order information in context and are inefficient in sentiment *** this paper,we systematically reviewed the classic and representative works in sentiment analysis and proposed a simple but efficient *** of all,FastText was trained to get the basic classification model,which can generate pre-trained word vectors as a ***,Bidirectional Long Short-Term Memory Network(Bi-LSTM)utilizes the generated word vectors for training and then merges with FastText to make comprehensive sentiment *** combining FastText and Bi-LSTM,we have developed a new fast sentiment analysis,called FAST-BiLSTM,which consistently achieves a balance between performance and *** particular,experimental results based on the real datasets demonstrate that our algorithm can effectively judge sentiments of users’comments,and is superior to the traditional algorithm in time efficiency,accuracy,recall and F1 criteria.

关键词： Sentiment analysis model fusion Bi-LSTM FastText

Hierarchical Control of Ride Height System for Electronically Controlled Air Suspension Based on Variable Structure and Fuzzy Control Theory

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Chinese Journal of Mechanical Engineering 2015年第5期28卷 945-953页

作者： XU Xing ZHOU Kongkang ZOU Nannan JIANG Hong cui xiaoli School of Automotive and Traffic Engineering Jiangsu University School of Mechanical Engineering Jiangsu University School of Mechanical Engineering Hunan Institute of Technology

The current research of air suspension mainly focuses on the characteristics and design of the air spring. In fact, electronically controlled air suspension （ECAS） has excellent performance in flexible height adjustment during different driving conditions. However, the nonlinearity of the ride height adjusting system and the uneven distribution of payload affect the control accuracy of ride height and the body attitude. Firstly, the three-point measurement system of three height sensors is used to establish the mathematical model of the ride height adjusting system. The decentralized control of ride height and the centralized control of body attitude are presented to design the ride height control system for ECAS. The exact feedback linearization method is adopted for the nonlinear mathematical model of the ride height system. Secondly, according to the hierarchical control theory, the variable structure control （VSC） technique is used to design a controller that is able to adjust the ride height for the quarter-vehicle anywhere, and each quarter-vehicle height control system is independent. Meanwhile, the three-point height signals obtained by three height sensors are tracked to calculate the body pitch and roll attitude over time, and then by calculating the deviation of pitch and roll and its rates, the height control correction is reassigned based on the fuzzy algorithm. Finally, to verify the effectiveness and performance of the proposed combined control strategy, a validating test of ride height control system with and without road disturbance is carried out. Testing results show that the height adjusting time of both lifting and lowering is over 5 s, and the pitch angle and the roll angle of body attitude are less than 0.15°. This research proposes a hierarchical control method that can guarantee the attitude stability, as well as satisfy the ride height tracking system.

关键词： electronically controlled air suspension (ECAS) ride height body attitude hierarchical control

In-situ formation of Al-CaB_6 composites with low resistivity

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Rare Metals 2012年第6期31卷 578-581页

作者： cui xiaoli Wu Yuying Zhu Xiangzhen Liu Xiangfa Shandong Univ Key Lab Liquid Solid Struct Evolut & Proc Mat Minist Educ Jinan 250061 Peoples R China

In this work, in-situ CaB6 reinforced aluminum matrix composites were fabricated, and the microstructure, resistivity, microhardness and coefficient of thermal expansion (CTE) of Al-CaB6 composites were studied. It is found that CaB6 compounds can be formed by reducing reaction occurred in the Al melt: . CaB6 exhibits a hexahedron morphology and distributes uniformly in the Al alloy matrix. The resistivity of Al-CaB6 composites is 3.02*10-8 Ω·m, which is close to that of pure Al and lower than that of 6063Al/Ga composites. The average microhardness of Al-CaB6 composites can reach 1270 MPa, 259.8% higher than that of pure Al. Compared to pure Al, the CTE of Al-CaB6 composites is much lower.

关键词： in-situ synthesis electron microscopy composite CaB6

更年期激素治疗方案和乳腺癌患病的相关性研究

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华北理工大学学报（医学版） 2024年第5期26卷 371-375,390页

作者：崔晓丽赵洁任菁晶张伟河南省第二人民医院妇产科河南郑州450000

目的评估更年期激素治疗方案(MHT)和乳腺癌(BC)患病的相关性。方法以2020年3月-2022年12月河南省第二人民医院就诊的BC患者作为观察组,以健康体检人群作为对照组,对比两组研究对象的一般资料和MHT。多因素Logisitic回归分析探讨MHT与... 详细信息

目的评估更年期激素治疗方案(MHT)和乳腺癌(BC)患病的相关性。方法以2020年3月-2022年12月河南省第二人民医院就诊的BC患者作为观察组,以健康体检人群作为对照组,对比两组研究对象的一般资料和MHT。多因素Logisitic回归分析探讨MHT与患者BC患病的相关性,并构建BC患病的预测模型。结果 (1)多因素Logistic回归分析显示体质量指数(BMI)、高血压、糖尿病、BC家族史、孕次、食用油炸食品≥3次/W、食用腌制品≥3次/W、吸烟、使用合成孕激素等,均是BC患病的影响因素(P<0.05)。其中孕次是保护性因素(OR<1)。(2)经ROC分析构建的BC患病Log P预测模型,其AUC为0.863(95%CI:0.791~0.911),显示预测效能较高。结论合成孕激素是与BC患病相关的MHT处方药物,微粒化孕酮可能是更安全的孕激素,Log P预测模型对更年期女性BC患病的预测效能较好。

关键词：更年期激素治疗乳腺癌