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Energy Engineering 2024年第4期121卷 1007-1026页

作者： Zhuo Chen ningning wang Wenbo Jin Dui Li The Second Oil Production Plant Sinopec Northwest Oilfield CompanyUrumqi830011China Yingmaili Oil and Gas Production Management Area PetroChina Tarim Oilfield CompanyKorla841001China College of Petroleum Engineering Xi’an Shiyou UniversityXi’an710065China

A hard problem that hinders the movement of waxy crude oil is wax deposition in oil *** ensure the safe operation of crude oil pipelines,an accurate model must be developed to predict the rate of wax deposition in crude oil *** at the shortcomings of the ENN prediction model,which easily falls into the local minimum value and weak generalization ability in the implementation process,an optimized ENN prediction model based on the IRSA is *** validity of the new model was confirmed by the accurate prediction of two sets of experimental data on wax deposition in crude oil *** two groups of crude oil wax deposition rate case prediction results showed that the average absolute percentage errors of IRSA-ENN prediction models is 0.5476% and 0.7831%,***,it shows a higher prediction accuracy compared to the ENN prediction *** fact,the new model established by using the IRSA to optimize ENN can optimize the initial weights and thresholds in the prediction process,which can overcome the shortcomings of the ENN prediction model,such as weak generalization ability and tendency to fall into the local minimum value,so that it has the advantages of strong implementation and high prediction accuracy.

关键词： Waxy crude oil wax deposition rate chaotic map improved reptile search algorithm Elman neural network prediction accuracy

The Mn/Yb/Er triple-doped CeO_(2) nanozyme with enhanced oxidase-like activity for highly sensitive ratiometric detection of nitrite

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Chinese Chemical Letters 2024年第6期35卷 491-495页

作者： Simin Wei Yaqing Yang Junjie Li Jialin wang Jinlu Tang ningning wang Zhaohui Li College of Chemistry Institute of Analytical Chemistry for Life ScienceHenan Joint International Research Laboratory of Green Construction of Functional Molecules and their Bioanalytical ApplicationsZhengzhou UniversityZhengzhou 450001China School of Basic Medical Sciences Zhengzhou UniversityZhengzhou 450001China

Long-term excessive intake of nitrite(NO_(2)^(-))poses a great threat to human health,needing a simple and fast method to detect NO_(2)-in ***,via a simple and feasible strategy,Mn/Yb/Er triple-doped CeO_(2) nanozyme(Mn/Yb/Er/CeO_(2))was synthesized for highly sensitive ratiometric detection of *** doping Mn,Yb,Er into CeO_(2) lattice structure,Mn/Yb/Er/CeO_(2) nanozyme showed enhanced oxidase-like activity,obtaining a higher density of oxygen vacancy and a higher ratio of Ce^(3+)to Ce~(4+)than that of CeO_(2).The 3,3,5,5-tetramethylbenzidine(TMB)can be effectively oxidized by Mn/Yb/Er/CeO_(2) to produce the oxidized TMB(ox TMB),showing a significant absorption signal at 652 ***,nitrite can react with ox TMB to produce yellow diazotized ox TMB,which is accompanied by an elevated absorption signal at 445 nm and a decreased absorption signal at 652 ***,based on the oxidase-mimetic activity of Mn/Yb/Er/CeO_(2) and the diazotization reaction between NO_(2)^(-)and ox TMB,a ratiometric colorimetric assay was established for NO_(2)^(-)detection in ***,by integrating Mn/Yb/Er/CeO_(2) with a smartphone,a colorimetric smartphone-sensing platform was successfully fabricated for visualization and quantitative detection of NO_(2)^(-).Notably,this two-detection mode showed excellent sensitivity,selectivity,reliability and practicability in monitoring the NO_(2)^(-)in real samples,impling its great potential for food safety.

关键词： Mn/Yb/Er/CeO_(2) nanozyme Oxidase-like activity Nitrite Ratiometric detection Two-detection mode

Unveiling a novel metal-to-metal transition in LuH_(2):Critically challenging superconductivity claims in lutetium hydrides

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Matter and Radiation at Extremes 2024年第3期9卷 65-73页

作者： Dong wang ningning wang Caoshun Zhang Chunsheng Xia Weicheng Guo Xia Yin Kejun Bu Takeshi Nakagawa Jianbo Zhang Federico Gorelli Philip Dalladay-Simpson Thomas Meier Xujie Lü Liling Sun Jinguang Cheng Qiaoshi Zeng Yang Ding Ho-kwang Mao Center for High-Pressure Science and Technology Advanced Research Beijing 100094China Beijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of SciencesBeijing 100190China Shanghai Key Laboratory of Material Frontiers Research in Extreme Environments(MFree) Shanghai Advanced Research in Physical Sciences(SHARPS)Shanghai 201203China

Following the recent report by Dasenbrock-Gammon et al.[Nature 615,244–250(2023)]of near-ambient superconductivity in nitrogendoped lutetium trihydride(LuH_(3-δ)N_(ε)),significant debate has emerged surrounding the composition and interpretation of the observed sharp resistance ***,we meticulously revisit these claims through comprehensive characterization and *** definitively identify the reported material as lutetium dihydride(LuH_(2)),resolving the ambiguity surrounding its *** similar conditions(270–295 K and 1–2 GPa),we replicate the reported sharp decrease in electrical resistance with a 30%success rate,aligning with the observations by Dasenbrock-Gammon et ***,our extensive investigations reveal this phenomenon to be a novel pressure-induced metal-to-metal transition intrinsic to LuH_(2),distinct from ***,nitrogen doping exerts minimal impact on this *** work not only elucidates the fundamental properties of LuH_(2)andLuH_(3),but also critically challenges the notion of superconductivity in these lutetium hydride *** findings pave the way for future research on lutetium hydride systems,while emphasizing the crucial importance of rigorous verification in claims of ambient-temperature superconductivity.

关键词： resistance hydride superconductivity

Clinical features and prognostic analysis of transarterial chemoembolization combined with targeted immunotherapy in the treatment of patients with hepatitis B virus-related intermediate- and advanced-stage hepatocellular carcinoma with secondary cholestas

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China Medical Abstracts(Internal Medicine) 2024年第1期41卷 51-52页

作者：王柠柠 Dept Infect Dis Affil HospXuzhou Med UnivXuzhou 221000

Objective To study the clinical features and prognostic impact of transarterial chemoembolization(TACE),immune checkpoint inhibitors (ICIs),and tyrosine kinase inhibitors (TKIs) combination therapy regimens in the treatment of patients with hepatitis B virus-related intermediate-and advanced-stage hepatocellular carcinoma with secondary cholestasis.

关键词： patients hepatocellular arterial

Successful rescue of disseminated Nocardia infection with multiple abscesses in a patient with membranous nephropathy after cardiopulmonary resuscitation:A three-year follow-up

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Journal of Biomedical Research 2024年第2期38卷 189-194,I0019,I0020页

作者： Yili Xu Hanyang Qian Wen Qian Li Dong Weiying Liu Yan Zhu Yaning Mei Yi Xu Ling wang Yi Xia Xu Qi Huanping Mei Xueqiang Xu Huijuan Mao Changying Xing ningning wang Department of Nephrology the First Affiliated Hospital of Nanjing Medical UniversityJiangsu Province HospitalNanjingJiangsu 210029China Department of Nephrology Nanjing Tongren HospitalNanjingJiangsu 211102China Department of Image the First Affiliated Hospital of Nanjing Medical UniversityJiangsu Province HospitalNanjingJiangsu 210029China Department of Infectious Disease the First Affiliated Hospital of Nanjing Medical UniversityJiangsu Province HospitalNanjingJiangsu 210029China Department of Nephrology the Second Hospital of NanjingNanjingJiangsu 210029China Department of Microorganism the First Affiliated Hospital of Nanjing Medical UniversityJiangsu Province HospitalNanjingJiangsu 210029China Department of Hematology the First Affiliated Hospital of Nanjing Medical UniversityJiangsu Province HospitalNanjingJiangsu 210029China Department of Rheumatology and Immunology the First Affiliated Hospital of Nanjing Medical UniversityJiangsu Province HospitalNanjingJiangsu 210029China

Nocardiosis manifests as an opportunistic infection,primarily affecting individuals who are immunocompromised and susceptible to the *** present a case study of one patient with nephrotic syndrome and membranous nephropathy,who underwent treatment with prednisone and cyclosporine in *** early 2017,the patient was diagnosed with a"fungal infection"and discontinued the use of *** one month of anti-infection therapy,a cranial magnetic resonance imaging scan showed multiple abscesses in the right temporal *** diagnosis of nocardiosis was confirmed based on the presence of metastatic abscess masses,multiple lung and brain lesions,and a positive culture of Nocardia in the *** changed the anti-infection therapy to a combination of trimethoprim-sulfamethoxazole(TMP-SMX),minocycline,and ***,the patient experienced a sudden cardiac arrest and subsequently recovered after cardiopulmonary *** the five-month follow-up period following the discharge,the patient displayed an enhanced nutritional status and stable renal *** focal infection ultimately resolved during the subsequent three ***-infection caused by Nocardia should be considered in immunocompromised patients,and TMP-SMX is the preferred initial therapy;however,because of the high mortality rate,a long-term combination therapy with imipenem,cefotaxime,amikacin,and TMP-SMX is suggested.

关键词： Nocardia infection glomerulonephritis membranous nephrology cardiopulmonary resuscitation

PGT-SR后囊胚形态学评分与冻融单囊胚移植活产的相关性分析

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中华生殖与避孕杂志 2024年第3期44卷 256-262页

作者：王宁宁王世铭苏迎春郑州大学第一附属医院生殖医学中心郑州450052

目的探讨胚胎植入前染色体结构重排检测(preimplantation genetic testing for chromosome structural rearrangements,PGT-SR)后囊胚形态学评分对冻融单囊胚移植活产的影响。方法回顾性病例对照研究分析2015年3月至2021年1月期间于郑... 详细信息

目的探讨胚胎植入前染色体结构重排检测(preimplantation genetic testing for chromosome structural rearrangements,PGT-SR)后囊胚形态学评分对冻融单囊胚移植活产的影响。方法回顾性病例对照研究分析2015年3月至2021年1月期间于郑州大学第一附属医院生殖医学中心行PGT-SR助孕后冻融单囊胚移植患者的临床资料,共1412个移植周期。依据是否获得活产分为活产组(n=634)和未活产组(n=778),根据囊胚扩张度、内细胞团和滋养层细胞形态对囊胚进行评分,比较各形态学参数的活产率差异。通过二元logistic回归评估每个形态学参数对单囊胚移植活产的预测价值。再依据囊胚发育天数分为第5天囊胚(n=977)和第6天囊胚(n=435),进一步探究第5天和第6天囊胚的不同扩张度分期的活产。结果活产组的不孕年限[(2.88±2.41)年]比未活产组[(3.18±2.67)年,P=0.028]短。活产组的移植日内膜厚度[(10.12±2.03)mm]和第5天囊胚移植周期比例[75.6%(479/634)]比未活产组[(9.78±1.76)mm,P=0.003;64.0%(498/778),P<0.001]高;两组间内膜准备方案、囊胚扩张度和滋养层细胞等级构成比比较差异均有统计学意义(P=0.008、P=0.002、P=0.015)。两组间内细胞团等级构成比差异无统计学意义(P=0.236)。调整相关混杂因素后,二元logistic回归分析结果显示,与1~2期相比,3期、4期的活产率显著升高(aOR=1.894,95%CI:1.056~3.394,P=0.032;aOR=1.970,95%CI:1.046~3.709,P=0.036),内细胞团和滋养层细胞等级并不是活产的独立影响因素(aOR=1.480,95%CI:0.790~2.772,P=0.221;aOR=1.242,95%CI:0.952~1.621,P=0.111)。内膜准备方案、囊胚发育天数和内膜厚度同样是活产的独立影响因素,与激素替代方案相比,自然周期方案的活产率显著升高(aOR=1.425,95%CI:1.028~1.975,P=0.033);与第6天囊胚相比,第5天囊胚的活产率显著升高(aOR=1.448,95%CI:1.068~1.963,P=0.017)。进一步分析相同囊胚发育天数的不同扩张度分期的活产,结果显示,第5天囊胚的不同扩张度分期间的活产率差异有统计学意义(P=0.002),3期、4期和6期的活产率[51.1%(360/704)、50.3%(87/173)、58.3%(7/12)]均高于1~2期[28.1%(16/57),均P<0.0125]。结论行PGT-SR助孕后冻融周期单囊胚移植时,建议优先选择扩张度为3~4期的第5天囊胚移植,选择自然周期内膜准备方案可获得更高的活产率。

关键词：冻融胚胎移植单囊胚移植形态学评分活产率胚胎植入前结构重排遗传学检测

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中国智慧城市建设对碳排放效率影响机制研究

地域研究与开发 2024年第2期43卷 131-138页

作者：王宁宁王勤升冯尊北京信息科技大学信息管理学院北京100192

聚焦数字生态视角,使用网络分析和指数随机图模型兼顾整体与个体效应,从关联性、动态性和聚集性视角探究中国智慧城市建设对碳排放效率的影响机制。结果表明:(1)从整体网络和个体网络来看,智慧城市建设明显提升碳排放效率网络的指标性能... 详细信息

聚焦数字生态视角,使用网络分析和指数随机图模型兼顾整体与个体效应,从关联性、动态性和聚集性视角探究中国智慧城市建设对碳排放效率的影响机制。结果表明:(1)从整体网络和个体网络来看,智慧城市建设明显提升碳排放效率网络的指标性能,促进城市间的合作,保证资源的合理分配利用。发达型、资源型城市在网络中占据主导地位,控制能力较大。(2)从网络拓扑结构来看,无标度性质和小世界性质表现不显著,同时东南沿海与华北地区的核心城市的数量逐渐增加,并随着智慧城市建设的逐渐成熟,局部聚集性明显加强。(3)从影响因素来看,互惠性对网络呈正相关;智慧人才对网络的影响最显著;智慧环境、智慧经济和智慧科技的发展对碳排放效率有改善作用,但存在周期性变化,对碳排放效率的影响效果规律性不强。

关键词：数字生态视角智慧城市碳排放效率复杂网络分析指数随机图模型

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颗粒冲蚀使径流涡轮机性能劣化的数值仿真

内燃机学报 2024年第4期42卷 358-366页

作者：马超王宁宁郭姗姗王任信潍坊学院机械与自动化学院山东潍坊261061 机械工业内燃机增压系统重点实验室山东寿光262718 康跃科技(山东)有限公司山东寿光262718 玉柴机器股份有限公司研究院广西南宁530000

涡轮增压器径流涡轮机作为车用柴油机提升性能和控制排放的关键零部件,长期受到尾气颗粒的高速冲蚀,会造成流道壁面粗糙度增加以及性能劣化.以某65K径流涡轮机为研究对象,基于两相流数值仿真方法,研究了流道壁面冲蚀特性的形成机理,并... 详细信息

涡轮增压器径流涡轮机作为车用柴油机提升性能和控制排放的关键零部件,长期受到尾气颗粒的高速冲蚀,会造成流道壁面粗糙度增加以及性能劣化.以某65K径流涡轮机为研究对象,基于两相流数值仿真方法,研究了流道壁面冲蚀特性的形成机理,并且基于牵引商用车的实际路谱研究了冲蚀对其性能劣化的影响规律.结果表明:流道壁面的局部冲蚀强度与蜗壳几何结构的非对称性密切相关,并在蜗舌位置表现出最高的冲蚀率;在运行时长为50 000 h内,涡轮机整机效率和相似流量相对变化率仿真预测值分别为-3.5%和1.1%,其中前10 000 h内的劣化率分别占总劣化率的56%和70%;基于牵引车实际路谱的计算结果,发展了涡轮机性能劣化随时间增长的经验公式.

关键词：涡轮增压器径流涡轮机颗粒冲蚀两相流

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基于卷积神经网络的通信网络安全告警方法

长江信息通信 2024年第2期37卷 93-95,113页

作者：王宁宁郑州工业应用技术学院信息工程学院河南郑州450000

常规的通信网络安全告警结构多设定为独立形式,安全告警的范围难以进行扩展,导致告警响应时间不断延长,为此提出对基于卷积神经网络的通信网络安全告警方法的设计与验证分析,根据当前测试需求及标准的变化,先进行基础安全告警机制的制定... 详细信息

常规的通信网络安全告警结构多设定为独立形式,安全告警的范围难以进行扩展,导致告警响应时间不断延长,为此提出对基于卷积神经网络的通信网络安全告警方法的设计与验证分析,根据当前测试需求及标准的变化,先进行基础安全告警机制的制定,采用多目标的方式,扩展通信网络实际的安全告警覆盖范围,同时设计多目标交叉网络安全告警结构,以此为基础,构建卷积神经网络通信网络告警模型,采用自适应锁定的方式来实现安全告警处理。最终的测试结果表明:对比于传统时空特征融合通信网络安全告警测试组、传统邻域搜索粒子群通信网络安全告警测试组,此次所设计的卷积神经网络通信网络安全告警测试组最终得出的告警响应时间被较好地控制在0.25s以下,说明在卷积神经网络技术的辅助下,当前所设计的告警效果更佳,针对性更强,具有实际的应用价值。

关键词：卷积神经神经网络异常识别通信网络安全告警告警方法

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榫卯-承插装配式桥墩抗震性能研究

地震工程与工程振动 2024年第2期44卷 126-136页

作者：米家禾亓兴军王宁宁杨宇管青海山东建筑大学交通工程学院山东济南250101 济南金曰公路工程有限公司山东济南250220 湖南中路华程桥梁科技股份有限公司湖南湘潭411100

承插式连接施工便捷,容许误差大,但耐久性较差。为提升施工质量和优化耐久性,结合超高性能混凝土(ultra-high performance concrete,UHPC)湿接缝连接技术,提出一种新型装配式桥墩——榫卯-承插装配式桥墩。设计制作1个榫卯-承插装配式... 详细信息

承插式连接施工便捷,容许误差大,但耐久性较差。为提升施工质量和优化耐久性,结合超高性能混凝土(ultra-high performance concrete,UHPC)湿接缝连接技术,提出一种新型装配式桥墩——榫卯-承插装配式桥墩。设计制作1个榫卯-承插装配式桥墩试件和1个对比桥墩试件(整体现浇桥墩),采用拟静力试验方法,结合数值模拟研究该装配式试件的破坏机理和抗震性能。研究结果表明:在试验加载过程中,两试件破坏形式都是以弯曲破坏为主的延性破坏,主要表现为墩底塑性铰区混凝土大量压溃剥落,而装配式连接处承台及灌浆料的破坏较小,且在达到极限荷载时装配式试件残余变形仅为整体现浇试件的79.09%,表明UHPC灌浆料可提升桥墩损伤容限,使其震后更易修复;榫卯-承插装配式试件采用较短的承插深度及钢筋搭接长度达到可靠的连接效果,在相同滞回位移下表现出等同现浇桥墩的承载力、延性、耗能能力和刚度;承插深度在0.4D(D为试件截面宽度)及以上时,接缝处连接可靠,整体性和抗震性能基本等同现浇;提高灌浆料弹性模量对桥墩刚度具有改善效果;纵筋直径对桥墩抗震性能的影响比承台搭接钢筋的影响更显著,增大纵筋配筋率对水平承载力和耗能能力的提升较为明显,但会增加桥墩残余变形。

关键词：超高性能混凝土装配式桥墩拟静力试验抗震性能数值模拟