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针对性护理对肾结石钬激光碎石术围手术期患者满意度的影响

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泌尿外科杂志(电子版) 2024年第1期16卷 73-77页

作者：李长凤周小荣彭杨洋茶盈盈前海人寿韶关医院泌尿外科

目的探讨针对性护理对肾结石钬激光碎石术围手术期患者满意度的影响。方法选取2022年6月至2023年1月前海人寿韶关医院收治的68例行肾结石钬激光碎石术患者作为研究对象,按照随机数字表法分为研究组与对照组,每组34例。研究组采用针对... 详细信息

目的探讨针对性护理对肾结石钬激光碎石术围手术期患者满意度的影响。方法选取2022年6月至2023年1月前海人寿韶关医院收治的68例行肾结石钬激光碎石术患者作为研究对象,按照随机数字表法分为研究组与对照组,每组34例。研究组采用针对性护理(包括术前宣教、心理护理、手术室针对性护理、术后基础干预及并发症护理),对照组采用常规护理。比较两组护理后情绪评分、疼痛评分、护理满意度及并发症发生情况。结果护理后,研究组汉密尔顿焦虑量表、汉密尔顿抑郁量表评分均低于对照组,差异有统计学意义(P<0.05)。术后1、2 d,研究组视觉模拟评分法评分均低于对照组,差异有统计学意义(P<0.05)。研究组护理总满意度为94.12%,高于对照组的73.53%,差异有统计学意义(P<0.05)。研究组并发症总发生率为8.82%,低于对照组的29.40%,差异有统计学意义(P<0.05)。结论针对性护理在改善肾结石钬激光碎石术围手术期患者满意度方面应用价值较高,可有效缓解患者身心压力,减轻疼痛,降低并发症发生率。

关键词：针对性护理肾结石钬激光碎石术围手术期护理护理满意度

The Theory and Application of Upwind Finite Difference Fractional Steps Procedure for Seawater Intrusion

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International Journal of Geosciences 2012年第5期3卷 972-991页

作者： Yirang Yuan Hongxing Rui Dong liang changfeng li Institute of Mathematics Shandong University Jinan China

Numerical simulation and theoretical analysis of seawater intrusion is the mathematical basis for modern environmental science. Its mathematical model is the nonlinear coupled system of partial differential equations with initial-boundary problems. For a generic case of a three-dimensional bounded region, two kinds of finite difference fractional steps pro- cedures are put forward. Optimal order estimates in norm are derived for the error in the approximation solution. The present method has been successfully used in predicting the consequences of seawater intrusion and protection projects.

关键词： Seawater Intrusion Three-Dimensional Region Upwind Fractional Steps Norm Estimate Numerical Simulation

Theory and Application of Numerical Simulation of Chemical Flooding in High Temperature and High Salt Reservoirs

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International Journal of Geosciences 2014年第9期5卷 956-970页

作者： Yirang Yuan Aijie Cheng Danping Yang changfeng li Institute of Mathematics Shandong University Jinan China

Applications, theoretical analysis and numerical methods are introduced for the simulation of mechanical models and principles of the porous flow in high temperature, high salt, complicated geology and large-scale reservoirs in this paper. Considering petroleum geology, geochemistry, computational permeation fluid mechanics and computer technology, we state the models of permeation fluid mechanics and put forward a sequence of implicit upwind difference iteration schemes based on refined fractional steps of the upstream, which can compute the pressures, the saturation and the concentrations of different chemistry components. A type of software applicable in major industries has been completed and carried out in numerical analysis and simulations of oil extraction in Shengli Oil-field, which brings huge economic benefits and social benefits. This software gives many characters: spatial steps are taken as ten meters, the number of nodes is up to hundreds of thousands and simulation time period can be tens of years and the high-order accuracy can be promised in numerical data. Precise analysis is present for simplified models of this type and that provides a tool to solve the international famous problem.

关键词： High Temperature and High Salt Complicated Chemical Flooding Computational Permeation Fluid Mechanics Numerical Method and Engineering Software Actual Application of Oil-Fields Theoretical Analysis

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基于双目结构光的手机中框特征提取研究

软件导刊 2024年第7期23卷 153-159页

作者：邓锋赵德安姬伟李长峰陈辉马腾江苏大学电气信息工程学院江苏镇江212013 常州铭赛机器人科技股份有限公司江苏常州213164

目前手机自动点胶作业中的路径提取普遍使用线结构光结合二维图像分析的方法,线结构光精度较高但速度较慢,二维图像分析方法需花费大量时间调试,普适性差。为提升手机中框点胶效率与精确度,设计一个基于双目结构光的手机中框特征提取系... 详细信息

目前手机自动点胶作业中的路径提取普遍使用线结构光结合二维图像分析的方法,线结构光精度较高但速度较慢,二维图像分析方法需花费大量时间调试,普适性差。为提升手机中框点胶效率与精确度,设计一个基于双目结构光的手机中框特征提取系统。该系统使用四步相移法结合格雷码的编码方案,引入鲁棒的格雷码二值化方法,在提升精度的同时过滤背景。经极线矫正后解码,根据解码信息相位匹配后计算三维点云坐标。对点云模型预处理后使用结合粗提取与精提取的点云轮廓提取方法,使用RANSAC拟合轮廓线,沿法向量偏移后获得点胶路径。实验结果表明,在保证精度的情况下,该系统三维成像时间为线激光方法的26.1%,总处理时间为线结构光结合二维图像分析方法的56.5%,鲁棒性更好。点云轮廓提取方法提取速度快、提取效果稳定,为高效自动点胶打下了良好基础。

关键词：自动点胶结构光点云特征提取

Fluid Flow and Heat Transfer Charateristics in a 180-deg Round Turned Channel with a Perforated Divider

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Journal of Applied Mathematics and Physics 2014年第6期2卷 411-417页

作者： Rui Xu Rui Xu Jinliang Hou li Wang Yanfei Yu Jiaxing Wei changfeng li School of Energy and Power Engineering Jiangsu University Zhenjiang China

This study provided a new configuration of the 180-deg round turned channel with a perforated divider, as well as numerically investigated the effect of perforations, including the diameter of perforation and the angel of perforation, on the fluid flow and heat transfer. The numerical results appeared in good agreement with previous experimental data under the same operating conditions. The results indicated that large size and positive angle of perforation changed the fluid flow pattern and the local Nusselt-number distribution fundamentally. It is noteworthy that a more uniform distribution of Nusselt-number was achieved by increasing the diameter of perforation.

关键词： 180-deg Turned Channel Perforated Divider Heat Transfer Computational Fluid Dynamic

慢性阻塞性肺疾病急性加重合并呼吸衰竭患者无创通气中右美托咪定不同目标镇静深度效果观察

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中华保健医学杂志 2024年第1期26卷 63-66页

作者：张龙卢生芳李长风许平陆学智汤严严上海市宝山区罗店医院急诊医学科 201908

目的观察慢性阻塞性肺疾病急性加重(AECOPD)并发呼吸衰竭接受无创正压通气(NIPPV)患者采用右美托咪定镇静不同镇静深度的效果。方法选取2021年8月~2023年3月上海市宝山区罗店医院收治的AECOPD并发呼吸衰竭患者136例,其中对照组40例给予... 详细信息

目的观察慢性阻塞性肺疾病急性加重(AECOPD)并发呼吸衰竭接受无创正压通气(NIPPV)患者采用右美托咪定镇静不同镇静深度的效果。方法选取2021年8月~2023年3月上海市宝山区罗店医院收治的AECOPD并发呼吸衰竭患者136例,其中对照组40例给予常规药物及NIPPV治疗;镇静A组48例给予盐酸右美托咪定微量泵静脉泵入,以Ramsay镇静评分2~3分为目标调整剂量;镇静B组48例盐酸右美托咪定以Ramsay镇静评分3~4分为目标调整剂量。比较3组患者治疗前、治疗后24 h的心率(HR)、呼吸频率(RR)、平均动脉压(MAP)及动脉血气指标;比较3组患者NIPPV开始后24 h内上机时间、痰液量、右美托咪定用量;比较3组患者插管、谵妄、心血管不良事件发生情况。结果治疗后,3组患者RR、MAP、HR、氧分压(PaO_(2))、二氧化碳分压(PaCO_(2))均较治疗前有明显改善,镇静A组、B组上述指标改善优于对照组,差异均有统计学意义(P0.05)。对照组气管插管率、谵妄发生率均高于镇静A组、B组,镇静B组心血管不良事件发生率高于对照组和镇静A组,组间差异有统计学意义(P<0.05)。结论AECOPD患者无创通气时采用右美托咪镇静可明显改善患者依从性,降低气管插管率,减少谵妄,以Ramsay镇静评分2~3为目标调整剂量可降低心血管不良事件发生率。

关键词：慢性阻塞性肺疾病呼吸衰竭无创正压通气右美托咪定镇静

STUDY ON MAIZE LEAF MORPHOLOGICAL MODEliNG AND MESH SIMPliFICATION OF SURFACE

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STUDY ON MAIZE LEAF MORPHOLOGICAL MODELING AND MESH SIMPLIFI...

武汉市医疗机构发热门诊医院感染管理现状调查

Computer and Computing Technologies in Agriculture——First IFIP TC 12 International Conference(CCTA2007) Volume I

作者： Xinyu Guo Chunjiang Zhao Boxiang Xiao Shenglian Lu changfeng li National Research Center for Information Technology in Agriculture Institute of computer technology Dalian University of Technology

According to the need of canopy visualization calculation in the digital plant research,we introduced a method,using Non-Uniform Rational B-Splines（NURBS） interpolation and multi-line segment splitting algorithm,to reconstruct the 3D morphological structure of maize leaf with a complexity controllable mesh.Using the data cloud obtained by digitizer,construct the surface of maize leaf by calculating the knot vectors and reverse calculating surface control points by difference calculation.The final visualization effect is realistic.According to leaf morphological characteristics,leaf surface mesh can be simplified by using inverse calculation of multi-line segment splitting algorithm,and the surface main characteristics can be maintained simultaneously.This method can be used in canopy visualization calculation and light distribution calculation.Results showed that it can improve the calculation efficiency obviously without increase the calculation error.

关键词： maize leaf NURBS geometric modeling mesh simplification light distribution calculation

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公共卫生与预防医学 2024年第4期35卷 62-65页

作者：刘小丽龚林王一梅许慧琼李美玲李长风武汉市疾病预防控制中心消毒与病媒生物防制所湖北武汉430024 武汉市疾病预防控制中心纪检监察室湖北武汉430024 武汉市医院感染管理质量控制中心湖北武汉430024

目的分析武汉市不同级别医疗机构发热门诊的医院感染管理情况,为进一步提高医院感染管理水平提供科学依据。方法 2023年1月对武汉市设置发热门诊的医疗机构进行网络问卷调查。结果 72所医疗机构中,发热门诊CT配置率为58.33%,48.61%设... 详细信息

目的分析武汉市不同级别医疗机构发热门诊的医院感染管理情况,为进一步提高医院感染管理水平提供科学依据。方法 2023年1月对武汉市设置发热门诊的医疗机构进行网络问卷调查。结果 72所医疗机构中,发热门诊CT配置率为58.33%,48.61%设置有儿童发热诊室。医院感染管理总合格率为78.28%,医院管理、诊疗环境保障、培训宣教和感控措施落实等4个一级指标,合格率分别为82.27%、71.49%、75.93%和81.31%,不同级别医疗机构间差异有统计学意义(均P80%,最高是医用物品管理(93.06%)、医废处置(89.72%)和人员管理(83.33%),最低是设施设备(66.32%)、患者及陪同人员宣教(66.67%)。65个三级指标中30个合格率>80.00%。结论武汉市积极推进发热门诊建设,医院感染管理质量整体较好,但仍不同程度存在一些问题,尤其是二级及以下医疗机构的发热门诊在布局流程、手卫生、工作人员培训等方面应进一步加强。

关键词：发热门诊医疗机构医院感染管理

An overview of autophagy in the differentiation of dental stem cells

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BIOCELL 2024年第1期48卷 47-64页

作者： XITONG ZHAO TIANJUAN JU XINWEI li changfeng liU LULU WANG li-AN WU State Key Laboratory of Oral&Maxillofacial Reconstruction and Regeneration National Clinical Research Center for Oral DiseasesShaanxi Clinical Research Center for Oral DiseasesDepartment of Pediatric DentistrySchool of StomatologyThe Fourth Military Medical UniversityXi’an710032China

Dental stem cells(DSCs)have attracted significant interest as autologous stem cells since they are easily accessible and give a minimal immune response.These properties and their ability to both maintain self-renewal and undergo multi-lineage differentiation establish them as key players in regenerative medicine.While many regulatory factors determine the differentiation trajectory of DSCs,prior research has predominantly been based on genetic,epigenetic,and molecular aspects.Recent evidence suggests that DSC differentiation can also be influenced by autophagy,a highly conserved cellular process responsible for maintaining cellular and tissue homeostasis under various stress conditions.This comprehensive review endeavors to elucidate the intricate regulatory mechanism and relationship between autophagy and DSC differentiation.To achieve this goal,we dissect the intricacies of autophagy and its mechanisms.Subsequently,we elucidate its pivotal roles in impacting DSC differentiation,including osteo/odontogenic,neurogenic,and angiogenic trajectories.Furthermore,we reveal the regulatory factors that govern autophagy in DSC lineage commitment,including scaffold materials,pharmaceutical cues,and the extrinsic milieu.The implications of this review are far-reaching,underpinning the potential to wield autophagy as a regulatory tool to expedite DSC-directed differentiation and thereby promote the application of DSCs within the realm of regenerative medicine.

关键词： Dental stem cells Cell differentiation Autophagy Mitophagy Autophagy regulation