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Prediction of multiscale laminae structure and reservoir quality in fine-grained sedimentary rocks:The Permian Lucaogou Formation in Jimusar Sag,Junggar Basin

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Petroleum Science 2022年第6期19卷 2549-2571页

作者： Xiao-Jiao Pang Gui-Wen Wang li-chun kuang Jin Lai Yang Gao Yi-Di Zhao Hong-Bin li Song Wang Meng Bao Shi-Chen liu Bing-Chang liu State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing102249China College of Geosciences China University of Petroleum(Beijing)Beijing102249China Technology Administration Department Petro China Company LimitedBeijing100007China Research Institute of Exploration and Development Xinjiang Oilfield CompanyPetro ChinaKaramayXinjiang834000China

Fine-grained sedimentary rocks have become a research focus as important reservoirs and source rocks for tight and shale oil and *** development determines the accumulation and production of tight and shale oil and gas in fine-grained ***,due to the resolution limit of conventional logs,it is challenging to recognize the features of centimeter-scale *** close this gap,complementary studies,including core observation,thin section,X-ray diffraction(XRD),conventional log analysis,and slabs of image logs,were conducted to unravel the centimeter-scale *** laminae recognition models were built using well *** fine-grained rocks can be divided into laminated rocks(lamina thickness of0.1 m)according to the laminae scale from core *** to the mineral superposition assemblages from thin-section observations,the laminated rocks can be further divided into binary,ternary,and multiple *** typical mineral components,slabs,and T2spectrum distributions of various lamina types are *** core can identify the centimeter-millimeter-scale laminae,and the thin section can identify the millimeter-micrometer-scale ***,they can detect mineral types and their superposition *** logs can identify the meter-scale layers,whereas image logs and related slabs can identify the laminae variations at millimeter-centimeter ***,the slab of image logs combined with thin sections can identify laminae assemblage characteristics,including the thickness and vertical *** identification and classification of lamina structure of various scales on a single well can be predicted using conventional logs,image logs,and slabs combined with thin *** layered rocks have better reservoir quality and oil-bearing potential than the massive and laminated *** laminated rocks’binary lamina is bette

关键词： Fine-grained sedimentary rocks Mineral composition Multiscale laminae structure Reservoir quality Image logs Lucaogou formation

Measurement of ^(153)Sm-EDTMP bone uptake bywhole-body scintigraphy and its application toindividualized treatment dosimetry of bone metastasis

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Nuclear Science and Techniques 2000年第4期11卷 257-262页

作者： li lin, DENG Hou-Fu, liANG Zheng-Lu, li Yun-chun, kuang An-Ren, TAN Tian-Zhi (The First Affiliated Hospital, West China University of Medical Sciences, Chengdu 610041) LUO Shun-Zhong (Southwest Institute of Nuclear Physics and Chemistry, Chengdu 610003) 华西医科大学四川成都 610041 中国工程物理研究院西南核物理与化学所四川成都 610003

To calculate a safe and effective 153Sm-EDTMP therapy dose, a whole-body scintigraphy technique for prospective individual dosimetry was developed and the results were compared with 5h urine collection method in 20 patients with bone metastases. Anterior and posterior whole-body images were obtained 10 min and 5 h after intravenous injection of 740 MBq 153Sm-EDTMP and the bone uptake value was determined. There is a close correlation between the bone uptake value obtained from the whole-body scintigraphy and 5 h urine collection method (r=0.93). The radiation absorption dose to red marrow was limited to 1.4 Gy and the administered activity calculated from bone uptake value by whole-body scintigraphy was 1.40-2.27GBq (mean 1.90 GBq). If the activity was calculated according to the standard body weight of 37 ***-1, the administered activity would be 1.75-2.41 GBq (mean 2.18), the radiation absorption dose to red marrow would be 1.37-2.27 Gy (mean 1.63 Gy), but at these doses significant myelotoxicity would be anticipated, thus emphasizing the need for individual prospective dosimetry.

关键词： ^153Sm-EDTMP 放射剂量钐153 全身闪烁扫描法放射性核素标记骨移位诊断

阿帕替尼治疗晚期非小细胞肺癌疗效与安全性的Meta分析

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中国现代医学杂志 2021年第8期31卷 70-77页

作者：况春丽李明郑泰浩重庆医科大学附属永川医院肿瘤内科重庆402160

目的系统评价阿帕替尼对比紫杉醇/多西他赛治疗晚期非小细胞肺癌(NSCLC)的疗效与安全性,为临床用药提供参考。方法计算机检索从建库至2019年8月中国知网、维普网、万方数据库、PubMed及Cochrane library数据库,对符合纳入标准的随机对... 详细信息

目的系统评价阿帕替尼对比紫杉醇/多西他赛治疗晚期非小细胞肺癌(NSCLC)的疗效与安全性,为临床用药提供参考。方法计算机检索从建库至2019年8月中国知网、维普网、万方数据库、PubMed及Cochrane library数据库,对符合纳入标准的随机对照试验进行质量评价,用RevMan 5.3软件进行Meta分析。结果共纳入9篇文献,均为随机对照试验,合计637例患者。Meta分析结果显示:阿帕替尼组客观缓解率高于紫杉醇/多西他赛组[■=1.77(95%CI:1.15,2.72)],疾病控制率高于紫杉醇/多西他赛组[■=2.15(95%CI:1.42,3.24)],KPS评分高于紫杉醇组[均数差=6.84(95%CI:4.84,8.84)],骨髓抑制发生情况低于紫杉醇/多西他赛组[■=0.39(95%CI:0.26,0.57)],胃肠道不良反应发生情况低于紫杉醇/多西他赛组[■=0.50(95%CI:0.33,0.76)]。结论阿帕替尼对比紫杉醇/多西他赛治疗晚期NSCLC能提高客观缓解率及疾病控制率,健康状况和生活质量更佳,骨髓抑制及胃肠道不良反应发生率较低。

关键词：癌非小细胞肺 Meta分析预后

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基于刻蚀处理的池沸腾传热性能实验研究

原子与分子物理学报 2025年第3期42卷 180-188页

作者：王菊萍匡纯纯刘妮上海理工大学制冷技术研究所上海200093

为探究刻蚀处理铜板表面对池沸腾传热性能的改善效果,搭建了可视化实验平台,制备不同刻蚀浓度和刻蚀时间处理的表面,采用去离子水为工质,进行饱和池沸腾实验.结果表明,氨水刻蚀浓度越大,表面的换热性能越强,氨水刻蚀时间越长,表面换热... 详细信息

为探究刻蚀处理铜板表面对池沸腾传热性能的改善效果,搭建了可视化实验平台,制备不同刻蚀浓度和刻蚀时间处理的表面,采用去离子水为工质,进行饱和池沸腾实验.结果表明,氨水刻蚀浓度越大,表面的换热性能越强,氨水刻蚀时间越长,表面换热性能越强.热流密度为43.2 W/cm^(2)时,0.05 mol/L氨水刻蚀4 h表面、0.05 mol/L氨水刻蚀5 h表面、0.05 mol/L氨水刻蚀8 h表面、0.03 mol/L氨水刻蚀4 h表面、0.05 mol/L氨水刻蚀4 h表面和0.10 mol/L氨水刻蚀4 h表面上的换热系数分别提高了46%、92%、105%、36%、45%、78%.此外,对其表面进行表征,结果说明了其优异的沸腾性能.刻蚀处理增强了表面粗糙度,有效面积,从而促进液体的补充,能够在较小的过热度下达到更高的临界热流密度.可视化研究结果表明,刻蚀表面具有更多的成核位点,更小的气泡离开直径和离开频率.这些结果显示出刻蚀表面强化池沸腾换热的潜力.

关键词：池沸腾刻蚀传热性能气泡动力学微纳结构表面

维普期刊数据库博看期刊

Influence of rapid heating process on the microstructure and tensile properties of high-strength ferrite–martensite dual-phase steel

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International Journal of Minerals,Metallurgy and Materials 2015年第9期22卷 933-941页

作者： Pei li Jun li Qing-ge Meng Wen-bin Hu chun-fu kuang School of Material Science and Engineer Shanghai Jiao Tong University Research Institute of Baoshan Iron and Steel Co. Ltd School of Material Science and Engineer University of Science and Technology Beijing

Three low-carbon dual-phase （DP） steels with almost constant martensite contents of 20vo1% were produced by intercritical annealing at different heating rates and soaking temperatures. Microstructures prepared at low temperature （1043 K, FH1） with fast-heating （300 K/s） show banded ferrite/martensite structure, whereas those soaked at high temperature （1103 K, FH2） with fast heating reveal blocky martensite uniformly distributed in the fine-grained ferrite matrix. Their mechanical properties were tested under tensile conditions and compared to a slow-heated （5 K/s） reference material （SH0）. The tensile tests indicate that for a given martensite volume fraction, the yield strength and total elongation values are noticeably affected by the refinement of ferrite grains and the martensite morphology. Metallographic observations reveal the formation of microvoids at the ferrite/martensite interface in the SH0 and FH2 samples, whereas microvoids nucleate via the fracture of banded martensite particles in the FH1 specimen. In addition, analyses of the work-hardening behaviors of the DP microstructures using the differential Crussard-Jaoul technique demonstrate two stages of work hardening for all samples.

关键词： high-strength steel martensite ferrite heating microstructure tensile properties grain refinement

Effect of temper rolling on the bake-hardening behavior of low carbon steel

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International Journal of Minerals,Metallurgy and Materials 2015年第1期22卷 32-36页

作者： chun-fu kuang Shen-gen Zhang Jun li Jian Wang Pei li School of Materials Science and Engineering University of Science and Technology Beijing Research Institute Baoshan Iron and Steel Co.Ltd. School of Materials Science and Engineering Shanghai Jiao Tong University

In a typical process, low carbon steel was annealed at two different temperatures （660℃ and 750℃）, and then was temper rolled to improve the mechanical properties. Pre-straining and baking treatments were subsequently carried out to measure the bake-hardening （BH） values. The influences of annealing temperature and temper rolling on the BH behavior of the steel were investigated. The results indicated that the microstructure evolution during temper rolling was related to carbon atoms and dislocations. After an apparent increase, the BH value of the steel significantly decreased when the temper rolling reduction was increased from 0%to 5%. This was attributed to the increase in solute carbon concentration and dislocation density. The maximum BH values of the steel annealed at 660℃ and 750℃ were 80 MPa and 89 MPa at the reductions of 3%and 4%, respectively. Moreover, increasing the annealing temperature from 660 to 750℃ resulted in an ob-vious increase in the BH value due to carbide dissolution.

关键词： low carbon steel hardening rolling microstructure

Effects of pre-strain and baking parameters on the microstructure and bake-hardening behavior of dual-phase steel

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International Journal of Minerals,Metallurgy and Materials 2014年第8期21卷 766-771页

作者： chun-fu kuang Shen-gen Zhang Jun li Jian Wang Hua-fei liu School of Materials Science and Engineering University of Science and Technology Beijing Research Institute Baoshan Iron and Steel Co. Ltd.

In a typical process, C-Mn steel was annealed at 800℃ for 180 s, and then cooled rapidly to obtain the ferrite-martensite microstructure. After pre-straining, the specimens were baked and the corresponding bake-hardening （BH） values were determined as a function of pre-strain, baking temperature, and baking time. The influences ofpre-strain, baking temperature and baking time on the microstructure evolution and bake-hardening behavior of the dual-phase steel were investigated systematically. It was found that the BH value apparently increased with an increase in pre-strain in the range from 0 to 1%; however, increasing pre-strain from 1% to 8% led to a decrease in the BH value. Furthermore, an increase in baking temperature favored a gradual improvement in the BH value because of the formation of Cottrell atmosphere and the precipitation of carbides in both the ferrite and martensite phases. The BH value reached a maximum of 110 MPa at a baking temperature of 300℃. Moreover, the BH value enhanced significantly with increasing baking time from 10 to 100 min.

关键词： dual-phase steel pre-strain baking treatment microstructure hardening

Nd–Mg–Ni alloy electrodes modified by reduced graphene oxide with improved electrochemical kinetics

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International Journal of Minerals,Metallurgy and Materials 2020年第3期27卷 391-400页

作者： Yuan li li-na Cheng Wen-kang Miao chun-xiao Wang De-zhi kuang Shu-min Han Hebei Key Laboratory of Applied Chemistry School of Environmental and Chemical EngineeringYanshan UniversityQinhuangdao 066004China State Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao 066004China Hunan Corun New Energy Co. Ltd.Changsha 410205China

To improve the electrochemical kinetics of Nd–Mg–Ni alloy electrodes, the alloy surface was modified with highly conductive reduced graphene oxide(rGO) via a chemical reduction process. Results indicated that rGO sheets uniformly coated on the alloy surface, yielding a threedimensional network layer. The coated surfaces contained numerous hydrophilic functional groups, leading to better wettability of the alloy in aqueous alkaline media. This, in turn, increased the concentration of electro-active species at the interface between the electrode and the electrolyte, improving the electrochemical kinetics and the rate discharge of the electrodes. The high rate dischargeability at 1500 mA·g^(–1) increased from 53.2% to 83.9% after modification. In addition, the modification layer remained stable and introduced a dense metal oxide layer to the alloy surface after a long cycling process. Therefore, the protective layer prevented the discharge capacity from quickly decreasing and improved cycling stability.

关键词： hydrogen storage alloys surface modification graphene oxide electrochemical properties kinetics

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基于数据挖掘技术的拖拉机发动机故障诊断

农机化研究 2025年第2期47卷 244-248页

作者：匡伟祥郴州职业技术学院现代装备制造学院湖南郴州423000

拖拉机是农业生产的重要工具,发动机是其核心部件,如发动机出现故障,将会直接影响农业生产效率和产量。为此,提出了一种使用数据挖掘技术进行拖拉机发动机故障诊断的方法。利用了机器学习技术和统计学,首先针对拖拉机田间运行信号噪音... 详细信息

拖拉机是农业生产的重要工具,发动机是其核心部件,如发动机出现故障,将会直接影响农业生产效率和产量。为此,提出了一种使用数据挖掘技术进行拖拉机发动机故障诊断的方法。利用了机器学习技术和统计学,首先针对拖拉机田间运行信号噪音较大的问题,引入小波阈值去噪的方法;其次,基于卷积神经网络模型,引入一种注意力机制,提高故障诊断准确率,并通过对拖拉机传感器数据进行分析,可以帮助诊断和预测发动机故障;最后,通过实验结果验证了算法的有效性。研究结果不仅可以提高故障的准确性和效率,还能够节约维修成本和提高机器的利用率,具有较高的应用价值。

关键词：拖拉机发动机故障诊断数据挖掘技术机器学习特征选择