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Evaluation of Technical Education by Using a Modern Structured MOODLE Laboratory Course, in Relation to Recent Data
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作者 Gerasimos Vlassopoulos George Albert Karikas +4 位作者 Efstathia Papageorgiou Ioannis Psaromiligkos Niki Giannouli Pigi Vlassopoulou Petros Karkalousos 《Journal of Intelligent Learning Systems and Applications》 2024年第3期316-339,共24页
E-learning platforms support education systems worldwide, transferring theoretical knowledge as well as soft skills. In the present study high-school pupils’, and adult students’ opinions were evaluated through a mo... E-learning platforms support education systems worldwide, transferring theoretical knowledge as well as soft skills. In the present study high-school pupils’, and adult students’ opinions were evaluated through a modern structured MOODLE interactive course, designed for the needs of the laboratory course “Automotive Systems”. The study concerns Greek secondary vocational education pupils aged 18 and vocational training adult students aged 20 to 50 years. The multistage, equal size simple random cluster sample was used as a sampling method. Pupils and adult students of each cluster completed structured 10-question questionnaires both before and after attending the course. A total of 120 questionnaires were collected. In general, our findings disclosed that the majority of pupils and adult students had significantly improved their knowledge and skills from using MOODLE. They reported strengthening conventional teaching, using the new MOODLE technology. The satisfaction indices improved quite, with the differences in their mean values being statistically significant. 展开更多
关键词 Information and Communication technologies (ICt) Distance Learning E-Learning students Opinions Education in Greece I.C.t. in Greece stUDENts Pupils Adults Adult students MOODLE MOOC (V.H.s.) Vocational High schools (s.H.V.t.) schools of Higher Vocational training VOCAtIONAL Profession Interactive Lessons Courses training Laboratory Course secondary Education Automotive systems Car systems
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In Vitro Evaluation of the Antifungal Activity of Essential Oils of Thymus vulgaris and Cymbopogon citratus on Some Strains of Sclerotinia sclerotiorum, Agent Responsible for White Rot of Beans
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作者 Serge Bertrand Mboussi Alain Heu +2 位作者 Abdou Nourou Kone Nsangou Jules Patrice Ngoh Dooh Zachée Ambang 《Agricultural Sciences》 2023年第8期1068-1086,共19页
The present work was aimed to the study of the antifungal activity of essential oils of two aromatic plants against three strains of Sclerotinia sclerotiorum responsible for white rot of bean. The two essential oils (... The present work was aimed to the study of the antifungal activity of essential oils of two aromatic plants against three strains of Sclerotinia sclerotiorum responsible for white rot of bean. The two essential oils (EO) of the studied plants: Thymus vulgaris (HET) and Cymbopogon citratrus (HEC), used at different concentrations: C1 (0.75 ml/ml), C2 (1.5 ml/ml) and C3 (3 ml/ml) presented significant inhibitory activities on the three tested fungal strains namely Bia 1, Bia 2, and Njo 2. Two control treatments (T-: containing no antifungal substance and T+: synthetic fungicide) were also used. The antifungal activity here is related to the inhibition of mycelial growth especially with high concentrations of essential oils. Thus, against S. sclerotiorum, HET showed the highest activity comparable to that of T+ (100% inhibition) at all concentrations on the Bia 1 and Bia 2 strains and at concentration C3 on the Njo 2 strain compared to that of HEC, which certainly inhibited the mycelial growth of the different strains considerably (with a maximum of 78.15% on the Njo 2 strain) but not completely. According to their sensitivity, the Bia 2 strain showed a higher sensitivity to essential oils than the others while the Njo 2 strain was more aggressive. On the basis of MIC<sub>50</sub> and MIC<sub>90</sub> obtained on the Njo 2 strain, the HET turns out to be the most efficient with respective lower values of (1.73 and 23.34 ml/ml) against (4.76 and 26.03 ml/ml) for the HEC. These EO could thus be exploited as biodegradable antifungal substances, likely to control white rot of bean. 展开更多
关键词 s. sclerotiorum t. vulgaris C. Citratrus Essential Oils Antifungal Activity INHIBItION
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Prenatal radiographic evaluation of congenital transverse limb deficiencies:A scoping review
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作者 Neeraj Vij Luis F Goncalves +2 位作者 Aaron Llanes Sean Youn Mohan V Belthur 《World Journal of Orthopedics》 2023年第3期155-165,共11页
BACKGROUND Congenital transverse deficiencies are horizontal deficiencies of the long bones that occur with a reported incidence as high 0.38%.They can occur alone or represent a manifestation of a various clinical sy... BACKGROUND Congenital transverse deficiencies are horizontal deficiencies of the long bones that occur with a reported incidence as high 0.38%.They can occur alone or represent a manifestation of a various clinical syndromes.Diagnosis has tradi-tionally comprised of conventional radiography and prenatal imaging studies.There has been much advancement regarding prenatal imaging modalities to allow for early diagnosis and appropriate treatment.AIM To summarize the current state of knowledge on congenital transverse limb deficiencies and to provide an update regarding the radiographic evaluation of congenital transverse limb deficiencies.METHODS This IRB-exempt scoping review followed the PRISMA-ScR checklist for scoping reviews strictly.Five search engines were searched for a total of 265 publications.Four authors reviewed these during the screening process.Of these,51 studies were included in our article.Prenatal magnetic resonance imaging(MRI),3D Ultrasound,and multidetector Computed tomography(CT)exist are emerging modalities that have the potential to improve diagnosis.RESULTS Use of the appropriate classification system,three-dimensional ultrasonography with a maximum intensity projection,and appropriate use of prenatal MRI and prenatal CT can improve diagnosis and inter-provider communication.CONCLUSION Further scholarly efforts are required to develop improve standardized guidelines regarding the pre-natal radiographic evaluation of congenital limb deficiencies. 展开更多
关键词 terminal deficiencies Roentgenographic evaluation Pediatric skeletal deficiencies Early diagnosis Patient-centered care Prenatal imaging©the Author(s)2023.Published by Baishideng Publishing Group Inc.All rights reserved.
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粗穗披碱草1H^(t)S染色体特异荧光原位杂交标记开发
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作者 宫文萍 汪晓璐 +6 位作者 王开 韩冉 祁广 徐文竞 曾小雪 郭军 刘成 《山东农业科学》 北大核心 2024年第7期16-22,共7页
小麦-粗穗披碱草1H^(t)S.1BL罗伯逊易位系高抗小麦条锈病和叶锈病,是小麦遗传改良的优异基因源。我们前期利用中国春ph1b基因突变体对该易位系进行诱导,获得了一批诱导后代材料,为了从中准确鉴定小麦-粗穗披碱草1H^(t)S小片段易位系,需... 小麦-粗穗披碱草1H^(t)S.1BL罗伯逊易位系高抗小麦条锈病和叶锈病,是小麦遗传改良的优异基因源。我们前期利用中国春ph1b基因突变体对该易位系进行诱导,获得了一批诱导后代材料,为了从中准确鉴定小麦-粗穗披碱草1H^(t)S小片段易位系,需要建立能够覆盖粗穗披碱草1H^(t)S染色体的荧光原位杂交(FISH)标记。本研究利用21个小麦及其近缘种探针、61个基于中国春基因组序列新开发的小麦1BS染色体探针以及40个根据简单三碱基重复序列新开发的探针对小麦-粗穗披碱草1H^(t)S.1BL易位系进行非变性FISH分析。结果显示,B74、B76和B77等36个探针(33个为新开发的)在1H^(t)S染色体上具有杂交信号,并且杂交信号可分为仅在染色体末端、仅在着丝粒处、同时在着丝粒处和近着丝粒处、覆盖1H^(t)S约3/4染色体臂、覆盖绝大部分1H^(t)S共五种类型。因此,部分探针单独使用或多个探针联合使用,其信号能覆盖1H^(t)S染色体,能够满足小麦-粗穗披碱草1H^(t)S小片段易位系鉴定,这可为小麦背景中粗穗披碱草染色质追踪提供新的检测手段。 展开更多
关键词 粗穗披碱草 1H^(t)s染色体 探针 荧光原位杂交标记
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基于量子衍生涡流算法和T⁃S模糊推理模型的储层岩性识别
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作者 赵娅 管玉 +1 位作者 李盼池 王伟 《石油地球物理勘探》 EI CSCD 北大核心 2024年第1期23-30,共8页
鉴于梯度下降法易陷入局部极值、普通群智能优化算法易早熟收敛,提出一种基于量子衍生涡流算法(Quantum Vortex Search Algorithm,QVSA)和T⁃S模糊推理模型的岩性识别方法,QVSA具有操作简单、收敛速度快、寻优能力强等优点,有助于T⁃S模... 鉴于梯度下降法易陷入局部极值、普通群智能优化算法易早熟收敛,提出一种基于量子衍生涡流算法(Quantum Vortex Search Algorithm,QVSA)和T⁃S模糊推理模型的岩性识别方法,QVSA具有操作简单、收敛速度快、寻优能力强等优点,有助于T⁃S模糊推理模型获得最优参数配置,从而实现储层岩性的准确识别。首先利用具有全局搜索能力的QVSA优化T⁃S模糊推理模型的各种参数;然后利用主成分分析方法降低获取的地震属性维度;再利用优化的T⁃S模糊推理模型识别储层岩性。实验结果表明,利用反映储层特征的8个地震属性识别储层岩性时,所提方法的识别正确率达到92%,比普通BP网络方法高5.1%,同时查准率、查全率、F1分数等指标也较BP网络方法提升明显。 展开更多
关键词 储层岩性识别 量子衍生涡流算法 ts 模糊推理模型 模糊集 地震属性
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扩展目标跟踪Student’s t逆Wishart平滑算法
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作者 陈辉 张丁丁 +1 位作者 连峰 韩崇昭 《电子与信息学报》 EI CAS CSCD 北大核心 2024年第8期3353-3362,共10页
脉冲干扰和离群量测信息等因素通常会导致异常的厚尾噪声,这使得以高斯假设为前提的扩展目标跟踪(ETT)估计器的性能急剧降低,针对该问题该文提出一种基于扩展目标随机矩阵模型(RMM)的Student’s t逆Wishart平滑(StIWS)算法。首先,将目... 脉冲干扰和离群量测信息等因素通常会导致异常的厚尾噪声,这使得以高斯假设为前提的扩展目标跟踪(ETT)估计器的性能急剧降低,针对该问题该文提出一种基于扩展目标随机矩阵模型(RMM)的Student’s t逆Wishart平滑(StIWS)算法。首先,将目标的运动状态以及过程噪声和量测噪声建模为Student’s t分布以表征异常噪声对扩展目标概率分布的影响,将目标扩展状态建模为服从逆Wishart分布的随机矩阵。然后,在Student’s t贝叶斯平滑框架下,详细推导了能在扩展目标的多重特征动态演变的过程中有效估计目标状态的StIWS算法。最后,通过扩展目标跟踪的仿真实验结果和真实场景实验结果验证了所提算法的有效性。 展开更多
关键词 扩展目标跟踪 students t平滑 逆Wishart分布 厚尾噪声
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Exploring Taiwan’s China Landscape Painting Aesthetic Preferences Through Evaluation Grid Method and the Continuous Fuzzy Kano Model
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作者 Chin-Chin Kuo Jiann-Sheng Jiang Min-Min Lin 《Journal of Contemporary Educational Research》 2023年第12期268-276,共9页
The primary objective of this study is to apply the Evaluation Grid Method(EGM)and the continuous fuzzy Kano quality model to explore the cognitive preferences of Taiwan China residents regarding the beauty of Taiwan... The primary objective of this study is to apply the Evaluation Grid Method(EGM)and the continuous fuzzy Kano quality model to explore the cognitive preferences of Taiwan China residents regarding the beauty of Taiwan’s China landscape paintings.The aim is to contribute to the development of social and cultural art and promote the widespread appeal of art products.Through a literature review,consultations with aesthetic experts,and the application of Miryoku Engineering’s EGM,this paper consolidates the factors that contribute to the attractiveness of painting art products among Taiwan China residents,taking into account various aesthetic qualities.Simultaneously,the paper introduces the use of the triangular fuzzy golden ratio scale semantics,specifically the equal-ratio aesthetic scale semantics,as a replacement for the traditional subjective consciousness model.Departing from the traditional discrete Kano model that employs the mode as the standard for evaluating quality,this study applies triangular fuzzy numbers to the continuous Kano quality model to analyze the diverse preferences and evaluation standards of the public.The hope is that this research methodology will not only deepen Taiwan China residents’understanding and aesthetic literacy of painting art but also serve as a reference for the popularization of art products. 展开更多
关键词 Aesthetic literacy taiwan’s landscape painting Miryoku engineering evaluation grid method(EGM) Fuzzy Kano model Golden ratio scale semantics
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车辆主动悬架自适应变论域T-S模糊控制研究
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作者 李韶华 季广港 +1 位作者 冯桂珍 王贺 《振动.测试与诊断》 EI CSCD 北大核心 2024年第4期733-739,828,共8页
针对传统变论域模糊控制存在过度依赖专家经验、伸缩因子参数不能自适应调整的问题,提出一种车辆主动悬架自适应变论域T-S模糊控制策略,从而提高车辆的行驶平顺性。结合神经网络和T-S模糊推理建立基于自适应神经模糊推理的一阶T-S模糊... 针对传统变论域模糊控制存在过度依赖专家经验、伸缩因子参数不能自适应调整的问题,提出一种车辆主动悬架自适应变论域T-S模糊控制策略,从而提高车辆的行驶平顺性。结合神经网络和T-S模糊推理建立基于自适应神经模糊推理的一阶T-S模糊控制器,利用神经网络的自学习特性产生完善的模糊规则,进而在传统函数型伸缩因子的基础上,将系统误差和误差变化率作为动态参数引入伸缩因子中,实现伸缩因子参数的自适应调整,解决了传统函数型伸缩因子因参数确定难度大导致控制效果差的问题。通过随机工况下的仿真分析和基于相似理论的缩尺实验,对所提出算法的有效性和工况自适应性进行了验证。结果表明,所提出的自适应变论域T-S模糊控制策略具有较强的工况适应性,在不同车速、路面激励下均可有效提高车辆的平顺性并保证轮胎接地安全性。 展开更多
关键词 主动悬架 变论域 伸缩因子 t-s模糊控制 神经模糊系统
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帕金森病患者免疫球蛋白、Th9亚群水平变化及其与IGF-1、S-100B蛋白的相关性
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作者 曹利红 张哲 傅天 《中国免疫学杂志》 CAS CSCD 北大核心 2024年第6期1248-1252,共5页
目的:研究帕金森病(PD)患者免疫球蛋白(IgG、IgA和IgM)、辅助性T细胞亚群Th9水平变化及其与胰岛素生长因子-1(IGF-1)、S-100B蛋白的相关性。方法:选取2020年12月至2022年12月期间在河北省中医院确诊的108例PD患者,将其作为研究组,并根... 目的:研究帕金森病(PD)患者免疫球蛋白(IgG、IgA和IgM)、辅助性T细胞亚群Th9水平变化及其与胰岛素生长因子-1(IGF-1)、S-100B蛋白的相关性。方法:选取2020年12月至2022年12月期间在河北省中医院确诊的108例PD患者,将其作为研究组,并根据患者病变程度分为轻度组(35例)、中度组(44例)和重度组(29例);另选108例健康成人作为对照组。对比研究组和对照组免疫球蛋白和Th9亚群水平,以及轻度组、中度组及重度组免疫球蛋白、Th9亚群、IGF-1和S-100B蛋白水平,采用Pearson相关性分析免疫球蛋白、Th9亚群和IGF-1、S-100B蛋白的相关性。采用Spearman相关性分析PD患者疾病程度和所有差异指标间的相关性。结果:研究组IgM水平较对照组低,且重度组低于中度组,中度组低于轻度组(P<0.05);研究组IgG、IgA、IL-9和Th9亚群水平较对照组高,且重度组高于中度组,中度组高于轻度组(P<0.05)。重度组IGF-1水平低于中度组,中度组低于轻度组;重度组S-100B蛋白水平高于中度组,中度组高于轻度组(P<0.05)。Pearson相关性分析结果显示,PD患者IgM水平与IGF-1水平呈正相关,与S-100B蛋白水平呈负相关;IgG、IgA、IL-9和Th9亚群水平均与IGF-1水平呈负相关,与S-100B蛋白水平呈正相关(P<0.05)。Spearman相关性分析结果显示,PD患者疾病程度与IgM、IGF-1水平呈负相关,与S-100B蛋白、IgG、IgA、IL-9和Th9亚群水平呈正相关(P<0.05)。结论:PD患者IgM水平降低,IgG、IgA、Th9亚群水平升高,且其水平变化与IGF-1、S-100B明显相关,可以用于评估病情的严重程度。 展开更多
关键词 帕金森病 免疫球蛋白 辅助性t细胞亚群 胰岛素生长因子-1 s-100B蛋白
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基于T-S模糊故障树的驱动电机冷却系统可靠性分析
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作者 柳炽伟 郭美华 《客车技术与研究》 2024年第2期19-25,共7页
车用驱动电机液压冷却系统存在故障机理不确定等问题。本文应用模糊数描述其故障概率和故障程度,建立驱动电机冷却系统的T-S模糊故障树模型,计算系统模糊可能性,分析各部件的概率重要度和关键重要度,找出影响系统可靠性的关键部件。
关键词 电动汽车 驱动电机 冷却系统 t-s模糊故障树 可靠性分析
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混合差分和多种群粒子群算法的T-S模糊模型辨识
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作者 林国汉 陈壮 《湖南工程学院学报(自然科学版)》 2024年第2期1-6,30,共7页
为提高T-S模型的辨识精度,针对基本粒子群优化(particle swarm optimization,PSO)算法T-S模型全局优化辨识问题,提出混合差分和多种群粒子群算法的T-S模糊模型辨识方法,将T-S模型前件参数和后件参数整体编码进行全局优化辨识.为避免基... 为提高T-S模型的辨识精度,针对基本粒子群优化(particle swarm optimization,PSO)算法T-S模型全局优化辨识问题,提出混合差分和多种群粒子群算法的T-S模糊模型辨识方法,将T-S模型前件参数和后件参数整体编码进行全局优化辨识.为避免基本粒子群的早熟收敛和后期收敛速度慢的缺陷对T-S模型辨识精度和速度的影响,算法将种群分为若干个子群,每个子群根据粒子适应度值自适应调整惯性权重,平衡了算法的开发和探索能力,对子群最优粒子,进行差分操作以增强算法的全局搜索能力,采用全局最优粒子替代随机子群的最优粒子以加强子群间的信息交流,维持粒子多样性.典型非线性系统和混沌系统的仿真结果表明,采用混合差分和多种群粒子群算法辨识的T-S模型具有更高的辨识精度. 展开更多
关键词 t-s模糊系统 粒子群优化 差分进化 多种群
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Model and method of permeability evaluation based on mud invasion effects 被引量:3
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作者 周峰 胡祥云 +2 位作者 孟庆鑫 胡旭东 刘志远 《Applied Geophysics》 SCIE CSCD 2015年第4期482-492,626,共12页
The evaluation of permeability in reservoir assessment is a complex problem. Thus, it is difficult to perform direct evaluation permeability with conventional well-logging methods. Considering that reservoir permeabil... The evaluation of permeability in reservoir assessment is a complex problem. Thus, it is difficult to perform direct evaluation permeability with conventional well-logging methods. Considering that reservoir permeability significantly affects mud invasion during drilling, we derive a mathematical model to assess the reservoir permeability based on mud invasion. A numerical model is first used to simulate the process of mud invasion and mud cake growth. Then, based on Darcy's law, an approximation is derived to associate the depth of mud invasion with reservoir permeability. A mathematical model is constructed to evaluate the reservoir permeability as a function of the mud invasion depth in time-lapse logging. Sensitivity analyses of the reservoir porosity, permeability, and water saturation are performed, and the results suggest that the proposed model and method are well suited for oil layers or oil-water layers of low porosity and low permeability. Numerical simulations using field logging and coring data suggest that the evaluated and assumed permeability data agree, validating the proposed model and method. 展开更多
关键词 mud invasion mud cake permeability evaluation Darcy's law
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Investigation on Phytoplankton and Water Quality Evaluation in Landscape Water of Campus in Nanjing Xianlin University Town 被引量:4
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作者 王琳 李敬伟 +5 位作者 夏娴 赵璐 孙晨霞 田园园 汪育文 许小军 《Journal of Landscape Research》 2010年第11期80-83,共4页
The major phytoplankton was investigated and analyzed in landscape water of six campuses in Nanjing Xianlin University Town,and water quality was evaluated by single factor assessment method and comprehensive weighted... The major phytoplankton was investigated and analyzed in landscape water of six campuses in Nanjing Xianlin University Town,and water quality was evaluated by single factor assessment method and comprehensive weighted evaluation method.The result showed that the major phytoplankton groups were Cyanophyta,Chlorophyta and Bacillariophyta.Besides,each evaluation indicator showed that waterbodies in four campuses were eutrophicated and result of single factor evaluation showed water quality all belonged to poor category V.The result of comprehensive weighted assessment showed that waters in Nanjing Normal University and Nanjing University of Posts and Telecommunications were seriously polluted,cyanobacterial bloom appearing.Waters in Nanjing University of Chinese Medicine and Nanjing Forest Police College hadn't been eutrophicated. 展开更多
关键词 Campuss LANDsCAPE WAtER PHYtOPLANKtON WAtER QUALItY evaluation
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Correlative factors of poor prognosis and abnormal cellular immune function in patients with Alzheimer’s disease 被引量:2
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作者 Hua Bai Hong-Mei Zeng +2 位作者 Qi-Fang Zhang Yue-Zhi Hu Fei-Fei Deng 《World Journal of Clinical Cases》 SCIE 2024年第6期1063-1075,共13页
BACKGROUND Alzheimer’s disease(AD)is a serious disease causing human dementia and social problems.The quality of life and prognosis of AD patients have attracted much attention.The role of chronic immune inflammation... BACKGROUND Alzheimer’s disease(AD)is a serious disease causing human dementia and social problems.The quality of life and prognosis of AD patients have attracted much attention.The role of chronic immune inflammation in the pathogenesis of AD is becoming more and more important.AIM To study the relationship among cognitive dysfunction,abnormal cellular immune function,neuroimaging results and poor prognostic factors in patients.METHODS A retrospective analysis of 62 hospitalized patients clinical diagnosed with AD who were admitted to our hospital from November 2015 to November 2020.Collect cognitive dysfunction performance characteristics,laboratory test data and neuroimaging data from medical records within 24 h of admission,including Mini Mental State Examination Scale score,drawing clock test,blood T lymphocyte subsets,and neutrophils and lymphocyte ratio(NLR),disturbance of consciousness,extrapyramidal symptoms,electroencephalogram(EEG)and head nucleus magnetic spectroscopy(MRS)and other data.Multivariate logistic regression analysis was used to determine independent prog-nostic factors.the modified Rankin scale(mRS)was used to determine whether the prognosis was good.The correlation between drug treatment and prognostic mRS score was tested by the rank sum test.RESULTS Univariate analysis showed that abnormal cellular immune function,extrapyramidal symptoms,obvious disturbance of consciousness,abnormal EEG,increased NLR,abnormal MRS,and complicated pneumonia were related to the poor prognosis of AD patients.Multivariate logistic regression analysis showed that the decrease in the proportion of T lym-phocytes in the blood after abnormal cellular immune function(odd ratio:2.078,95%confidence interval:1.156-3.986,P<0.05)was an independent risk factor for predicting the poor prognosis of AD.The number of days of donepezil treatment to improve cognitive function was negatively correlated with mRS score(r=0.578,P<0.05).CONCLUSION The decrease in the proportion of T lymphocytes may have predictive value for the poor prognosis of AD.It is recommended that the proportion of T lymphocytes<55%is used as the cut-off threshold for predicting the poor prog-nosis of AD.The early and continuous drug treatment is associated with a good prognosis. 展开更多
关键词 Alzheimer’s disease Cellular immunity PROGNOsIs t lymphocytes Magnetic resonance spectroscopy
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基于T-S模糊逻辑的混合储能孤岛直流微电网功率分配控制
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作者 张伟杰 顾吉鹏 +3 位作者 张有兵 杨晓东 娄伟 汪斌杰 《电力自动化设备》 EI CSCD 北大核心 2024年第6期135-144,共10页
在含混合储能的直流微电网中,传统阻容下垂控制无法解决由线路电阻和负荷功率波动导致的系统功率分配失衡问题。为此,提出一种基于Takagi-Sugeno(T-S)模糊逻辑的自适应阻容下垂控制方法以实现混合储能的分频分配。根据蓄电池和超级电容... 在含混合储能的直流微电网中,传统阻容下垂控制无法解决由线路电阻和负荷功率波动导致的系统功率分配失衡问题。为此,提出一种基于Takagi-Sugeno(T-S)模糊逻辑的自适应阻容下垂控制方法以实现混合储能的分频分配。根据蓄电池和超级电容的物理特性,建立单个蓄电池支路输出电压、蓄电池组间输出功率差额和阻性下垂系数之间的T-S模糊逻辑关系,以及单个超级电容支路输出功率及其变化率、超级电容组间功率差额和容性下垂系数之间的T-S模糊逻辑关系,并由此构建基于T-S模糊逻辑的阻容下垂控制器。推导含混合储能的直流微电网中各部分的平均阻抗模型,并采用阻抗比分析法对微电网的小信号稳定性进行研究。MATLAB/Simulink仿真结果表明,基于T-S模糊逻辑的阻容下垂控制可保证在线路电阻和负荷功率波动情况下系统功率的合理分配。 展开更多
关键词 直流微电网 混合储能 t-s模糊逻辑 功率分配 稳定性分析
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靶向蛋白S-棕榈酰化修饰在T细胞免疫疗法中的研究进展
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作者 孙丽婷 张为国 童玥 《中国药科大学学报》 CAS CSCD 北大核心 2024年第1期45-52,共8页
S-棕榈酰化是细胞内一种可逆且动态的蛋白质翻译后修饰,参与调控下游靶基因转录、表达以及信号转导,进而影响细胞生命活动。研究发现数千种人类蛋白质经历S-棕榈酰化修饰,表明S-棕榈酰化与疾病发生发展以及治疗之间存在很大程度的关联性... S-棕榈酰化是细胞内一种可逆且动态的蛋白质翻译后修饰,参与调控下游靶基因转录、表达以及信号转导,进而影响细胞生命活动。研究发现数千种人类蛋白质经历S-棕榈酰化修饰,表明S-棕榈酰化与疾病发生发展以及治疗之间存在很大程度的关联性。T细胞是机体抗肿瘤免疫的主力军,多种T细胞免疫相关蛋白受S-棕榈酰化调节。本文围绕S-棕榈酰化对T细胞信号转导的影响及在T细胞免疫疗法中的应用展开论述,为T细胞免疫治疗新靶点及多肽抑制剂的开发提供新思路。 展开更多
关键词 s-棕榈酰化 DHHC t细胞 免疫疗法 肽抑制剂
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Milk fat globule membrane supplementation protects againstβ-lactoglobul-ininduced food allergy in mice via upregulation of regulatory T cells and enhancement of intestinal barrier in a microbiota-derived short-chain fatty acids manner 被引量:1
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作者 Han Gong Tiange Li +3 位作者 Dong Liang Jingxin Gao Xiaohan Liu Xueying Mao 《Food Science and Human Wellness》 SCIE CSCD 2024年第1期124-136,共13页
Milk fat globule membrane(MFGM),which contains abundant glycoproteins and phospholipids,exerts beneficial effects on intestinal health and immunomodulation.The aim of this study was to evaluate the protective effects ... Milk fat globule membrane(MFGM),which contains abundant glycoproteins and phospholipids,exerts beneficial effects on intestinal health and immunomodulation.The aim of this study was to evaluate the protective effects and possible underlying mechanisms of MFGM on cow’s milk allergy(CMA)in aβ-lactoglobulin(BLG)-induced allergic mice model.MFGM was supplemented to allergic mice induced by BLG at a dose of 400 mg/kg body weight.Results demonstrated that MFGM alleviated food allergy symptoms,decreased serum levels of lipopolysaccharide,pro-inflammatory cytokines,immunoglobulin(Ig)E,Ig G1,and Th2 cytokines including interleukin(IL)-4,while increased serum levels of Th1 cytokines including interferon-γand regulatory T cells(Tregs)cytokines including IL-10 and transforming growth factor-β.MFGM modulated gut microbiota and enhanced intestinal barrier of BLG-allergic mice,as evidenced by decreased relative abundance of Desulfobacterota,Rikenellaceae,Lachnospiraceae,and Desulfovibrionaceae,while increased relative abundance of Bacteroidetes,Lactobacillaceae and Muribaculaceae,and enhanced expressions of tight junction proteins including Occludin,Claudin-1 and zonula occludens-1.Furthermore,MFGM increased fecal short-chain fatty acids(SCFAs)levels,which elevated G protein-coupled receptor(GPR)43 and GPR109A expressions.The increased expressions of GPR43 and GPR109A induced CD103+dendritic cells accumulation and promoted Tregs differentiation in mesenteric lymph node to a certain extent.In summary,MFGM alleviated CMA in a BLG-induced allergic mice model through enhancing intestinal barrier and promoting Tregs differentiation,which may be correlated with SCFAs-mediated activation of GPRs.These findings suggest that MFGM may be useful as a promising functional ingredient against CMA. 展开更多
关键词 Cow’s milk allergy Milk fat globule membrane Gut microbiota short-chain fatty acid G protein-coupled receptor Regulatory t cell
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咳喘停袋泡颗粒抑制IL-33/ILC2s和致病性T细胞干预过敏性气道炎症的作用机制
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作者 邹楠婷 吴招 +6 位作者 闫晓东 张春菲 张浩洪 莫庆艳 巨鸣谦 徐金柱 万春平 《中国药理学通报》 CAS CSCD 北大核心 2024年第7期1350-1357,共8页
目的研究咳喘停袋泡颗粒(Kechuanting,KCT)抑制IL-33/ILC2s和致病性T细胞干预过敏性气道炎症的作用机制。方法网络药理学分析KCT干预哮喘的潜在靶点和机制。以OVA诱导过敏性哮喘模型小鼠。组织病理染色观察肺损伤变化;ELISA和荧光定量PC... 目的研究咳喘停袋泡颗粒(Kechuanting,KCT)抑制IL-33/ILC2s和致病性T细胞干预过敏性气道炎症的作用机制。方法网络药理学分析KCT干预哮喘的潜在靶点和机制。以OVA诱导过敏性哮喘模型小鼠。组织病理染色观察肺损伤变化;ELISA和荧光定量PCR分别检测Th2型哮喘中关键炎症因子及其mRNA表达水平;Western blot检测MAPK通路中相关蛋白磷酸化水平;流式细胞术检测ILC2s、Th1、Th17、Th2和Treg细胞的比例。结果网络药理学鉴定出KCT治疗哮喘的227个主要活性成分和143个共同靶点,主要富集到MAPK和IL-17等信号通路。进一步验证实验显示,KCT干预明显减轻了哮喘小鼠肺部炎症损伤程度,减少B细胞数量及IL-4、TNF-α、TGF-β的产生,下调肺组织中JNK磷酸化水平以及Il-33、Bcl11b、Rorα、Tcf-7、Jun、MAPK3、MAPK14 mRNA表达。KCT干预减少了哮喘小鼠肺和脾中ILC2s和Th17数量,抑制肺中Th2细胞浸润。结论KCT对过敏性哮喘气道炎症有较好的治疗作用,其机制与抑制IL-33/ILC2s通路、致病性T细胞亚群和JNK-MAPK信号通路相关。 展开更多
关键词 咳喘停袋泡颗粒 过敏性哮喘 气道炎症 ILC2s tH2细胞 CD4^(%PLUs%)t细胞
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基于T-S MPC的车辆自适应巡航控制策略研究
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作者 刘晓龙 张蕾 +2 位作者 王清 李然然 安馨 《国外电子测量技术》 2024年第7期57-64,共8页
针对于汽车自适应巡航系统面对复杂工况时自适应性不强的问题,提出了一种基于T-S模糊变权重模型预测控制(Takagi-Sugeno fuzzy model predictive control,T-S MPC)的自适应巡航分层控制策略。首先上层控制器基于安全距离模型将自适应巡... 针对于汽车自适应巡航系统面对复杂工况时自适应性不强的问题,提出了一种基于T-S模糊变权重模型预测控制(Takagi-Sugeno fuzzy model predictive control,T-S MPC)的自适应巡航分层控制策略。首先上层控制器基于安全距离模型将自适应巡航系统划分为定速巡航模式、多目标优化控制的跟随模式和紧急制动模式;下层控制器基于车辆逆动力学模型,将上层控制器输出的期望加速度转变为节气门开度或制动压力;其次考虑到权重系数对控制精度的影响,建立基于T-S模糊控制的变权重模型预测控制器;最后搭建Carsim Simulink联合仿真平台,验证控制策略的准确性、适应性和跟踪响应速度。结果表明,在定速巡航工况时,T-S MPC控制方法跟踪响应时间为1.54 s,较PID和传统MPC控制跟踪响应快;在跟随和混合工况时,T-S MPC控制方法均方根误差为分别为0.3073、2.775,均低于PID、PID+LQR和传统MPC控制的均方根误差、并且自适应性好,有效提高了跟车性能与安全性。 展开更多
关键词 自适应巡航 分层控制 t-s MPC 控制策略
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基于TS-DBN的地铁牵引系统可靠性分析
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作者 席欢 钟倩文 +2 位作者 柴晓冬 郑树彬 文静 《计算机与数字工程》 2024年第5期1310-1316,共7页
论文提出一种结合连续时间T-S动态故障树和贝叶斯网络(TS-DBN)的可靠性评估方法来模拟实际运营过程中牵引系统的动静态失效行为。首先,构建基于牵引系统单元结构的故障树模型;然后,通过应用T-S动态门的时序规则,给出T-S门的逻辑定义,进... 论文提出一种结合连续时间T-S动态故障树和贝叶斯网络(TS-DBN)的可靠性评估方法来模拟实际运营过程中牵引系统的动静态失效行为。首先,构建基于牵引系统单元结构的故障树模型;然后,通过应用T-S动态门的时序规则,给出T-S门的逻辑定义,进而计算子节点后验概率及重要度参数;将敏感节点进行排序,建立系统连续时间状态下的稳定度函数数学模型。该方法能够直观地反映牵引系统结构单元的敏感薄弱环节,可以为后续维修策略优化提供理论参考。 展开更多
关键词 轨道交通 牵引系统 t-s动态门 贝叶斯网络 可靠性分析
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