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Vertical grain-size trend of mouth bar in lacustrine fan delta:Flume experiments

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Petroleum Science 2022年第5期19卷 1964-1977页

作者： Ke Zhang Sheng-He Wu Jun-Jie wang Yun-Jie Xu Zhen-hua Xu jia-jia Zhang State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing102249China College of Geosciences China University of Petroleum(Beijing)Beijing102249China School of Geosciences Yangtze UniversityWuhanHubei 430100China

Field observational previously indicated a mouth bar of a fan delta could exhibit a fining-or coarseningupward trend,which bring a new challenge to the identification of mouth bar in subsurface studies due to the lack of morphological *** studies have indicated that effluent behavior in rivermouth system can affect the vertical grain-size trend of mouth bar,but the drivers and magnitude of this phenomenon are not *** conducted flume experiments to investigate the mechanism and controlling factors of vertical grain-size trend of mouth *** with a steeper slope of the substrate layer,greater discharge,higher sediment/water ratio,and coarser sediment induced a finingupward trend of mouth bar,because the effluent was dominated by strong *** bar in the experiment with a gentler slope of the substrate layer,smaller discharge,lower sediment/water ratio,and finer sediment exhibited a coarsening-upward trend dominated by the friction-dominated *** relationship between the vertical grain-size trend of mouth bar and the gradients of foreset bedding in small-scale flume models and the cut-off of 15°-18°are applicable in natural *** depositional setting to infer depositional process in river-mouth system and analyzing the plane geometry of sandbodies are two steps in the interpretation of ancient fan deltaic rock record.

关键词： Mouth bar Vertical grain-size trend Effluent behavior Inertia Bed friction

Progress in research on diffusional phase transformations of Fe–C alloys under high magnetic fields

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Journal of Iron and Steel Research International 2022年第5期29卷 707-718页

作者： Kai wang Chao-jie Yan Chen-hua Yuan Xi-chen Yang Li-jia Zhao Qiang wang Key Laboratory of Electromagnetic Processing of Materials(Ministry of Education) Northeastern UniversityShenyang110819LiaoningChina School of Metallurgy Northeastern UniversityShenyang110819LiaoningChina School of Materials Science and Engineering Northeastern UniversityShenyang110819LiaoningChina

The solid-phase transformations of metal materials under high magnetic fields are an important topic in research on the electromagnetic processing of *** in research on the diffusional phase transformations of Fe–C alloys under high magnetic fields is *** effects of high magnetic fields on the microstructural evolution in diffusional phase transformations in Fe–C alloys are *** kinetics of ferrite transformations,pearlite transformations,and the precipitation of carbides under high magnetic fields are reviewed in terms of the thermodynamics of phase transformations and the diffusion behavior of carbon ***,future trends in research on diffusional phase transformations of Fe–C alloys under high magnetic fields are discussed.

关键词： High magnetic field Diffusional phase transformation Fe–C alloy Microstructure Thermodynamics Kinetics

盐酸羟考酮对全麻下行结肠癌根治术患者应激反应的影响

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中国肛肠病杂志 2017年第5期37卷 13-15页

作者：张迪姜万维崔家华王庆辉大连大学附属中山医院麻醉二科辽宁大连116001

为探讨盐酸羟考酮对全麻下行结肠癌根治术患者应激反应的影响,选择大连大学附属中山医院施行结肠癌根治术治疗的80例患者进行研究,随机分为A、B 2组,每组40例.2组均采用全身静脉麻醉,予以咪达唑仑、舒芬太尼、依托咪酯、苯磺顺阿曲库铵... 详细信息

为探讨盐酸羟考酮对全麻下行结肠癌根治术患者应激反应的影响,选择大连大学附属中山医院施行结肠癌根治术治疗的80例患者进行研究,随机分为A、B 2组,每组40例.2组均采用全身静脉麻醉,予以咪达唑仑、舒芬太尼、依托咪酯、苯磺顺阿曲库铵诱导,丙泊酚、瑞芬太尼、苯磺顺阿曲库铵维持,A组麻醉诱导前静脉注射生理盐水5 mL,B组麻醉诱导前静脉注射盐酸羟考酮5 mg（1 mg/mL）.分别于注射试验药品之前（T0）、注药后30 min（T1）、注药后2 h（T2）、手术结束前（T3）、拔除气管导管后即刻（T4）测量2组患者静脉血中肾上腺素（E）和去甲肾上腺素（NE）含量及胃黏膜的pH值,统计术后24 h内胃溃疡发生率.结果显示,2组T0时刻静脉血中E、NE含量及胃黏膜的pH值比较差异均无统计学意义,P〉0.05.B组T1、T2、T3、T4时刻静脉血中E和NE含量均明显低于A组,P〈0.05;B组T1、T2、T3、T4时刻胃黏膜的pH值明显高于A组,P〈0.05.B组术后24 h内胃溃疡发生率明显低于A组,P〈0.05.结果表明,盐酸羟考酮注射液可以有效减轻全麻下行结肠癌根治术患者的应激反应.

关键词：结肠癌根治术盐酸羟考酮应激反应胃溃疡

基于PERK-eIF2α-NF-κB信号通路研究苁蓉散治疗阿尔茨海默病的作用机制

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中国药理学通报 2025年第1期41卷 80-87页

作者：王曦龙清华蔡元钦王政喻陈显兵曾楚华湖北民族大学医学部湖北恩施445000 湖北民族大学风湿性疾病发生与干预湖北省重点实验室湖北恩施445000 云南中医药大学基础医学院云南昆明650000

目的基于PERK-eIF2α-NF-κB信号通路研究苁蓉散治疗阿尔茨海默病(Alzheimer’s disease,AD)的作用机制。方法将60只SD大鼠分为正常组,模型组、苁蓉散组(4.62、9.24、18.48 g·kg-1)和安理申组,每组10只。除正常组外其余大鼠组予双侧海... 详细信息

目的基于PERK-eIF2α-NF-κB信号通路研究苁蓉散治疗阿尔茨海默病(Alzheimer’s disease,AD)的作用机制。方法将60只SD大鼠分为正常组,模型组、苁蓉散组(4.62、9.24、18.48 g·kg-1)和安理申组,每组10只。除正常组外其余大鼠组予双侧海马注射Aβ1-42建立AD模型。灌胃结束后进行水迷宫行为学检测学习记忆能力;尼氏染色观察神经元及尼氏小体变化;免疫荧光检测NF-κB核转移情况;透射电镜观察大鼠海马区内质网形态;酶免疫测定Aβ1-42及炎症因子含量;Western blot检测PERK、eIF2α、NF-κB的蛋白表达水平。结果水迷宫结果显示,苁蓉散能提高AD大鼠的逃避潜伏期时间、增加穿越求生平台次数、延长目标象限停留时间(P<0.05或P<0.01);尼氏染色结果显示,苁蓉散各剂量组神经元细胞排列较整齐,胞核存在,尼氏小体较为丰富;免疫荧光表明,苁蓉散可降低AD大鼠脑内NF-κB入核表达(P<0.05或P<0.01);透射电镜结果显示,苁蓉散各剂量组内质网形态整齐、未见明显扩张,结构正常;ELISA结果表明,苁蓉散可降低AD海马中的Aβ1-42,IL-1,TNF-α的含量;Western blot结果显示,苁蓉散各剂量组p-PERK/PERK,p-eIF2α/eIF2α,p-NF-κB p65/NF-κB p65的蛋白比值明显下降(P<0.05或P<0.01)。结论苁蓉散可通过抑制PERK-eIF2α-NF-κB信号通路的活化,缓解神经元细胞ERS状态下免疫炎症反应,以改善AD大鼠的认知功能。

关键词：阿尔兹海默病苁蓉散内质网应激 PERK-eIF2α-NF-κB信号通路炎症 Aβ1-42

SVM model for estimating the parameters of the probability-integral method of predicting mining subsidence

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Mining Science and Technology 2009年第3期19卷 385-388,394页

作者： ZHANG hua wang Yun-jia LI Yong-feng School of Environment ＆ Spatial lnformatics China University of Mining ＆ Technology Xuzhou Jiangsu 221116 China jiangsu Key Laboratory of Resources and Environmental Information Engineering Xuzhou Jiangsu 221116 China

A new mathematical model to estimate the parameters of the probability-integral method for mining subsidence prediction is *** on least squares support vector machine(LS-SVM) theory, it is capable of improving the precision and reliability of mining subsidence *** of the geological and mining factors involved are related in a nonlinear *** new model is based on statistical theory(SLT) and empirical risk minimization(ERM) *** data collected from observation stations were used for the learning and training *** calculated results from the LS-SVM model were compared with the prediction results of a back propagation neural network(BPNN) *** results show that the parameters were more precisely predicted by the LS-SVM model than by the BPNN *** LS-SVM model was faster in computation and had better generalized *** provides a highly effective method for calculating the predicting parameters of the probability-integral method.

关键词： mining subsidence probability-integral method least squares support vector machine artificial neural networks

Deflection Compensation Model for Flatness Measuring Roll

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Journal of Iron and Steel Research International 2010年第12期17卷 35-37,45页

作者： LIU jia-wei ZHANG Dian-hua wang Jun-sheng wang Peng-fei State Key Laboratory of Rolling and Automation Northeastern University Shenyang 110004 Liaoning China Anshan Iron and Steel Company Anshan 114001 Liaoning China

In flatness measuring system, the flatness measuring signal can be affected by the deflection of flatness measuring roll. The stress on flatness measuring roll was analyzed and a deflection model for the flatness measuring roll was obtained by using the influence function method. The model was developed on the basis of the deformation of flatness measuring roll in roiling process and compensation curve was obtained. The results indicated that the set curve of flatness is in good agreement with the online measured curve of flatness, and good strip flatness can be obtained.

关键词： flatness measuring roll deflection influence function method compensation curve

0.75 Gbit/s high-speed classical key distribution with mode-shift keying chaos synchronization of Fabry–Perot lasers

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Light(Science & Applications) 2021年第9期10卷 1780-1788页

作者： hua Gao Anbang wang Longsheng wang Zhiwei jia Yuanyuan Guo Zhensen Gao Lianshan Yan Yuwen Qin Yuncai wang Key Laboratory of Advanced Transducers and Intelligent Control System Ministry of Education and Shanxi ProvinceTaiyuanChina College of Physics and Optoelectronics Taiyuan University of TechnologyTaiyuanChina School of Information Engineering Guangdong University of TechnologyGuangzhouChina Guangdong Provincial Key Laboratory of Photonics Information Technology GuangzhouChina Center for Information Photonics and Communications School of Information Science and TechnologySouthwest Jiaotong UniversityChengduChina

High-speed physical key distribution is diligently pursued for secure *** this paper,we propose and experimentally demonstrate a scheme of high-speed key distribution using mode-shift keying chaos synchronization between two multi-longitudinal-mode Fabry–Perot lasers commonly driven by a super-luminescent *** users dynamically select one of the longitudinal modes according to private control codes to achieve mode-shift keying chaos *** two remote chaotic light waveforms are quantized to generate two raw random bit streams,and then those bits corresponding to chaos synchronization are sifted as shared keys by comparing the control *** this method,the transition time,i.e.,the chaos synchronization recovery time is determined by the rising time of the control codes rather than the laser transition response time,so the key distribution rate is improved *** experiment achieved a 0.75-Gbit/s key distribution rate with a bit error rate of 3.8×10^(−3)over 160-km fiber transmission with dispersion *** entropy rate of the laser chaos is evaluated as 16 Gbit/s,which determines the ultimate final key rate together with the key generation *** is therefore believed that the method pays a way for Gbit/s physical key distribution.

关键词： Gbit/s synchronization chaos

Boosting tribo-catalytic conversion of H_(2)O and CO_(2)by Co_(3)O_(4)nanoparticles through metallic coatings in reactors

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Journal of Advanced Ceramics 2023年第10期12卷 1833-1843页

作者： Xuchao jia Hongbo wang hua Lei Chenyue Mao Xiaodong Cui Yong Liu Yanmin jia Wenqing Yao Wanping Chen School of Physics and Technology Wuhan UniversityWuhan 430072China School of Science Xi’an University of Posts and TelecommunicationsXi’an 710061China Department of Chemistry Tsinghua UniversityBeijing 100084China

In recent years,more and more metal oxides have been finding critical tribo-catalytic ***,we have explored the tribo-catalytic conversion of H_(2)O and CO_(2)using Co_(3)O_(4)nanoparticles and obtained some surprising *** an as-received 150 mL glass reactor enclosed with 10 mL of H_(2)O,0.10 g of Co_(3)O_(4)nanoparticles,1 atm of CO_(2),and a Teflon magnetic rotary disk,we observed the production of as much as 57.41μmol/L of H_(2),0.15μmol/L of CH_(4),and 0.21μmol/L of CO after 5 h of magnetic *** coatings of Cu,Ni,SUS316,Ti,Nb,Mo,and W were further introduced on reactor bottoms *** those coatings of Ni,SUS316,Ti,and Nb,the reduction of CO_(2)was dramatically enhanced,and C_(2+)products of C_(2)H_(6)and C_(2)H_(4)were *** for the Ti coating,the amounts of H_(2)and CH_(4)were increased by 2 and 26 times from those for the glass bottom,respectively,and the amounts of C_(2)H_(6)and C_(2)H_(4)were very *** Co_(3)O_(4)nanoparticles were proven chemically stable under magnetic stirring in water,and hydroxyl radicals and superoxide radicals have been detected for the Co_(3)O_(4)nanoparticles under magnetic stirring through fluorescence spectroscopy and electron paramagnetic resonance spectroscopy *** findings not only reveal outstanding capability of Co_(3)O_(4)to generate multicarbon products from H_(2)O and CO_(2)through tribo-catalysis but also highlight a promising potential of tribo-catalysis as a whole to harness mechanical energy for addressing energy shortages and environmental pollution.

关键词： tribo-catalysis water splitting CO_(2)reduction Co_(3)O_(4)

Research on Evaluation of Degree of Complexity of Mining Fault Network Based on GIS

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Journal of China University of Mining and Technology 2007年第1期17卷 63-67页

作者： ZHANG hua wang Yun-jia LIU Chuan-zhi School of Environment Science and Spatial Infornlatics China Universit3.＇ of Mining ＆ Technology Xuzhou Jiangsu 221008 China

A large number of spatial and attribute data are involved in coal resource evaluation. Database is a relatively advanced data management technology, but its Major defects are the poor graphic and spatial data functions, from which it is difficult to realize scientific management of evaluation data with spatial characteristics and evaluation result maps. On account of these deficiencies, the evaluation of degree of complexity of mining fault network, based on GIS, is proposed, which integrates management of spatial and attribute data. Fractal is an index which can reflect the comprehensive information of faults' number, density, size, composition and dynamics mechanism. Fractal dimension is used as the quantitative evaluation index. Evaluation software has been developed based on a component GIS-MapX, with which the degree of complexity of fault network is evaluated quantitatively using the quantitative index of fractal dimensions in Liuqiao No.2 coal mine as an example. Results show that it is effective in acquiring model parameters and enhancing the definition of data and evaluation results with the application of GIS technology. The fault network is a system with fractal structure and its complexity can be described reasonably and accurately by fractal dimension, which provides an effective method for coal resource evaluation.

关键词： spatial data fractal dimension fault network quantitative evaluation GIS