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Petroleum Exploration and Development 2019年第1期46卷 153-162页

作者： GUO Jianchun TAO Liang ZENG Fanhui State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation in Southwest Petroleum University

Tight oil reservoirs in Songliao Basin were taken as subjects and a novel idealized refracturing well concept was proposed by considering the special parameters of volume fracturing horizontal wells, the refracturing potential of candidate wells were graded and prioritized, and a production prediction model of refracturing considering the stress sensitivity was established using numerical simulation method to sort out the optimal refracturing method and timing. The simulations show that: with the same perforation clusters, the order of fracturing technologies with contribution to productivity from big to small is refracturing between existent fractured sections, orientation diversion inside fractures, extended refracturing, refracturing of existent fractures; and the later the refracturing timing, the shorter the effective time. Based on this, the prediction model of breakdown pressure considering the variation of formation pressure was used to find out the variation pattern of breakdown pressure of different positions at different production time. Through the classification of the breakdown pressure, the times of temporary plugging and diverting and the amount of temporary plugging agent were determined under the optimal refracturing timing. Daily oil production per well increased from 2.3 t/d to 16.5 t/d in the field test. The research results provide important reference for refracturing optimization design of similar tight oil reservoirs.

关键词： Songliao Basin tight oil reservoirs refracturing volume fracturing breakdown pressure temporary plugging and diverting

An optimal fracture geometry design method of fractured horizontal wells in heterogeneous tight gas reservoirs

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Science China(Technological Sciences) 2016年第2期59卷 241-251页

作者： ZENG Fanhui KE YuBiao GUO JianChun State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation Southwest Petroleum University

In this work, the unified fracture design(UFD) is extended for the first time to the fractured horizontal wells in heterogeneous closed box-shaped tight gas reservoirs. Utilizing the direct boundary element method and influence function, the dimensionless fracture productivity index is obtained and expressed in the function of proppant volume and fracture geometry at the pseudo-steady state. With the iterative method, the effectively propped permeability, kfe, is corrected using the in-situ Reynolds number, N_(Re). The goal of this paper is to present a new UFD extension to design the proppant volume and the optimal fracture geometry. The results show that there exists an optimal proppant volume for a certain reservoir. The small aspect ratio(y_e/x_e) and high permeability reservoirs need short and wide fractures to diminish the non-Darcy effect. On the contrary, long and narrow fractures are required for the large aspect ratio and low permeability reservoirs. A small proppant volume is prone to creating long fractures, while a relatively large proppant volume creates wide fractures. The new extension can be used to evaluate the previous fracture parameters and design the following fracture parameters of the fractured horizontal well in heterogeneous tight gas reservoirs, with the non-Darcy effect taken into account.

关键词：压裂水平井设计方法致密气藏几何尺寸非均质裂缝水库非达西效应

Numerical simulation of 23 June 2016 Yancheng City EF4 tornadic supercell and analysis of lightning activity

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Science China Earth Sciences 2017年第12期60卷 2204-2213页

作者： GUO FengXia LI Yang HUANG ZhaoChu WANG ManFei ZENG Fanhui LIAN ChunHao MU YiJun key laboratory of meteorological disaster ministry of education(klme)joint international research laboratory of climate and environment change(ilcec)collaborative innovation center on forecast and evaluation of meteorological disaster(cic-femd)key laboratory for aerosol-cloud-precipitation of china meteorological administrationnanjing university of information science&technologyNanjing 210044China

Based on the Weather Research Forecasting(WRF) model that features charging and discharging parameterization,relationships between tornado, hail and lightning were investigated for a tornado-producing(EF4 intensity) supercell thunderstorm over Yancheng City in Jiangsu Province, China, on 23 June 2016. Based on a sounding at 0800, there was a low lifting condensation level, substantial convective available potential energy(CAPE), and strong vertical wind shear near Yancheng City, which promote supercell development. At 1400, observations revealed that hail production and a dramatic increase of positive cloud-to-ground flash rates occurred simultaneously, maximizing five minutes later. The tornado occurred 30 min after the hail production. The time of minimum positive cloud-to-ground flash rates was 15 min later. The simulation indicated that the tornadic supercell moved eastward and that positive cloud-to-ground flash rates increased dramatically at 1400, the same as observed, but their maximum was 5 min later than observed. The simulated updraft volume peaked at 1425 and the simulated downdraft volume maximized5 min later, when the mesocyclone formed. Simulated reflectivities showed no hook echo and horizontal winds for different height at mid-low levels had a different cyclonic shear at 1430, favorable to mesocyclone formation. Based on the simulated results,the region of positively charged graupel ascended resulting from the region of high liquid water content was lifted by the strong updraft, forming a mid-level strong positive charge region. A lower negative charge region formed by the inductive charging mechanism of collisions between graupel and droplets at the bottom of the cloud, conducive to positive cloud-to-ground flashes.

关键词： Tornado Supercell WRF Hail Positive cloud-to-ground flashes

Orem自我照顾模式在骨性关节炎患者围术期的应用效果

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中国健康心理学杂志 2020年第5期28卷 696-700页

作者：曾范慧中国.河南省驻马店市中心医院 463000

目的:分析Orem自我照顾模式在膝关节骨性关节炎患者围术期的应用效果。方法:纳入2016年6月至2018年6月期间我院收治的86例膝关节骨性关节炎行关节镜治疗术的患者进行研究,采用随机数字表法将其随机分为观察组、对照组各43例,对照组予以... 详细信息

目的:分析Orem自我照顾模式在膝关节骨性关节炎患者围术期的应用效果。方法:纳入2016年6月至2018年6月期间我院收治的86例膝关节骨性关节炎行关节镜治疗术的患者进行研究,采用随机数字表法将其随机分为观察组、对照组各43例,对照组予以骨科常规围术期干预,观察组应用Orem自我照顾模式进行围术期干预。比较两组患者术后恢复情况(术后下床活动时间、术后住院时间),入院时、出院时心理应激反应[汉密尔顿焦虑量表(HAMA)、汉密尔顿抑郁量表(HAMD)]评分,以及术前、术后6个月自我效能[一般自我效能感(GSES)量表]评分、HSS膝关节评分、日常生活活动量表(ADL)评分变化。结果:两组患者下床活动时间对比差异无统计学意义(t=-1.346,P=0.182),观察组术后住院时间短于对照组(t=-10.909,P<0.001);观察组出院时HAMA、HAMD评分以及对照组出院时HAMA、HAMD评分均较入院时降低(t=-7.200,-8.975,-4.643,-3.369;P<0.001),且观察组HAMA、HAMD评分均低于对照组(t=-2.555,-4.621;P<0.05);对照组患者GSES评分较出院时无明显变化(t=1.649,P=0.103),观察组较术前评分显著升高(t=4.179,P<0.001),术后6个月观察组评分显著高于对照组(t=2.806,P=0.006);观察组术后6个月HSS、ADL评分与对照组术后术后6个月HSS、ADL评分均高于术前(t=40.584,61.359,30.435,50.979;P<0.001),且观察组高于对照组(t=12.250,10.713;P<0.001)。结论:膝关节骨性关节炎围术期应用Orem自我照顾模式可改善患者负性心理应激反应,提高自我效能水平与日常生活能力,于其术后恢复有利。

关键词：自我照顾模式骨性关节炎关节镜手术心理应激自我效能

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因素空间理论的决策树C4.5算法改进

辽宁工程技术大学学报（自然科学版） 2017年第1期36卷 109-112页

作者：曾繁慧李艺辽宁工程技术大学理学院辽宁阜新123000 辽宁工程技术大学智能工程与数学研究院辽宁阜新123000

针对决策树C4.5算法在处理数值型因素时比较复杂和分类精度不高等问题,在数据预处理过程中采用云变换进行连续因素离散化,给出了连续属性离散化的具体算法.利用因素空间理论给出一种构造决策树算法的新的启发式函数—分辨度,分析了算法... 详细信息

针对决策树C4.5算法在处理数值型因素时比较复杂和分类精度不高等问题,在数据预处理过程中采用云变换进行连续因素离散化,给出了连续属性离散化的具体算法.利用因素空间理论给出一种构造决策树算法的新的启发式函数—分辨度,分析了算法的时间复杂度,证明其为多项式算法.研究结果表明:改进算法的测试准确率和效率均优于决策树算法.

关键词：决策树因素空间云模型离散化分辨度

Conserved and differentiated functions of CIK receptor kinases in modulating stem cell signaling in Arabidopsis

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Molecular Plant 2021年第7期14卷 1119-1134页

作者： Yafen Zhu Chong Hu Yanwei Cui Li zeng Sunjingnan Li Mingsong Zhu fanhui Meng Shuting Huang Li Long Jing Yi Jia Li Xiaoping Gou Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations School of Life SciencesLanzhou UniversityLanzhou 730000China

The shoot apical meristem(SAM)and root apical meristem(RAM)act as pools of stem cells that give rise to aboveground and underground tissues and organs in higher plants,respectively.The CLAVATA3(CLV3)-WUSCHEL(WUS)negative-feedback loop acts as a core pathway controlling SAM homeostasis,while CLV3/EMBRYO SURROUNDING REGION(ESR)40(CLE40)and WUSCHEL-RELATED HOMEOBOX5(WOX5),homologs of CLV3 and WUS,direct columella stem cell fate.Moreover,CLV3 INSENSITIVE KINASES(CIKs)have been shown to be essential for maintaining SAM homeostasis,whereas whether they regulate the distal root meristem remains to be elucidated.Here,we report that CIKs are indispensable for transducing the CLE40 signal to maintain homeostasis of the distal root meristem.We found that the cik mutant roots displayed disrupted quiescent center and delayed columella stem cell(CSC)differentiation.Biochemical assays demonstrated that CIKs interact with ARABIDOPSIS CRINKLY4(ACR4)in a ligand-independent manner and can be phosphorylated by ACR4 in vitro.In addition,the phosphorylation of CIKs can be rapidly induced by CLE40,which partially depends on ACR4.Although CIKs act as conserved and redundant regulators in the SAM and RAM,our results demonstrated that they exhibit differentiated functions in these meristems.

关键词： ACR4 CIKs CLE40 stem cells distal root meristem phosphorylation

规范化健康宣教联合协同护理干预对全膝关节置换术患者术后康复锻炼依从性及膝关节功能的影响

维普期刊数据库评论

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临床医学工程 2022年第12期29卷 1759-1760页

作者：张平曾范慧驻马店市中心医院康复医学科河南驻马店463000 驻马店市中心医院关节外科河南驻马店463000

目的探讨规范化健康宣教联合协同护理干预对全膝关节置换术患者术后康复锻炼依从性以及膝关节功能的影响。方法82例接受全膝关节置换术的患者随机分为两组,对照组采用常规护理干预,观察组采用规范化健康宣教联合协同护理干预,比较两组... 详细信息

目的探讨规范化健康宣教联合协同护理干预对全膝关节置换术患者术后康复锻炼依从性以及膝关节功能的影响。方法82例接受全膝关节置换术的患者随机分为两组,对照组采用常规护理干预,观察组采用规范化健康宣教联合协同护理干预,比较两组的康复锻炼依从性及膝关节功能。结果观察组的康复锻炼总依从率为97.56%,显著高于对照组的82.93%(P<0.05)。干预后,两组的HSS评分均显著高于干预前,且观察组的HSS评分显著高于对照组(P<0.05)。结论规范化健康宣教联合协同护理干预可有效提高全膝关节置换术患者的术后康复锻炼依从性,改善其膝关节功能。

关键词：规范化健康宣教协同护理干预全膝关节置换术康复锻炼依从性膝关节功能

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消除要素价格扭曲与构建现代化经济体系探讨

改革与战略 2018年第12期34卷 36-41页

作者：曾凡慧河南师范大学数学与信息科学学院河南新乡453007

建设现代化经济体系是我国发展的战略目标,矫正要素价格扭曲是必要条件。我国要素市场发育滞后,土地价格、资本价格、劳动力和能源价格都存在不同程度的扭曲,要素价格扭曲刺激了我国经济的高速增长,但也造成投资扭曲和分配扭曲,不利于... 详细信息

建设现代化经济体系是我国发展的战略目标,矫正要素价格扭曲是必要条件。我国要素市场发育滞后,土地价格、资本价格、劳动力和能源价格都存在不同程度的扭曲,要素价格扭曲刺激了我国经济的高速增长,但也造成投资扭曲和分配扭曲,不利于现代化经济体系建设。政府干预、路径依赖、产权不完备、财税体制不完善等是要素价格扭曲的主要成因。建设现代化经济体系必须完善产权保护制度,减少政府干预,消除要素市场扭曲,促进要素市场化和要素结构升级。

关键词：生产要素价格扭曲要素市场化现代化经济体系

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因素分析法的样本培育

辽宁工程技术大学学报（自然科学版） 2017年第3期36卷 320-323页

作者：曾繁慧郑莉辽宁工程技术大学理学院辽宁阜新123000 辽宁工程技术大学智能工程与数学研究院辽宁阜新123000

为解决由训练样本局限性导致因素分析法中测试样本错误识别和无法识别的问题,进一步提高因素库对样本信息的利用,采用样本培育的方法,对离散决策表的修炼培育作了具体表述:利用初始训练得到的规则集对新增样本进行测试,加入反馈机制,对... 详细信息

为解决由训练样本局限性导致因素分析法中测试样本错误识别和无法识别的问题,进一步提高因素库对样本信息的利用,采用样本培育的方法,对离散决策表的修炼培育作了具体表述:利用初始训练得到的规则集对新增样本进行测试,加入反馈机制,对训练集进行多重训练,直至初始测试准确率不变.研究结果表明:样本培育方法能及时地用新增训练数据改写推理规则,更好地实现样本信息的利用价值.

关键词：因素空间因素库因素分析法样本培育反馈样本错误识别无法识别

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基于因素空间决定度的动态因素约简算法

辽宁工程技术大学学报（自然科学版） 2018年第2期37卷 430-433页

作者：陈万景曾繁慧辽宁工程技术大学理学院辽宁阜新123000 辽宁工程技术大学智能工程与数学研究院辽宁阜新123000

针对因素分析表中的因素实时变化的问题,利用因素空间决定度,给出了动态的因素约简算法.该算法分析了增加因素的决定度与原静态因素约简后因素的决定度之间的大小关系,有效利用原因素分析表静态因素约简的结果.在此基础上,实现了对新增... 详细信息

针对因素分析表中的因素实时变化的问题,利用因素空间决定度,给出了动态的因素约简算法.该算法分析了增加因素的决定度与原静态因素约简后因素的决定度之间的大小关系,有效利用原因素分析表静态因素约简的结果.在此基础上,实现了对新增加因素后的因素分析表的动态因素约简.在UCI数据集上的实验结果表明:动态的因素约简算法是有效可行的.

关键词：因素因素空间动态约简新因素决定度选择比较 UCI数据集