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老年急性左心衰并发肺部感染病原菌与危险因素及其预测模型的预测价值

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中华医院感染学杂志 2024年第3期34卷 346-350页

作者：金茜刘永花杨艳周艺吴红燕连云港市第一人民医院心血管内科江苏连云港222000

目的探讨老年急性左心衰并发肺部感染病原菌与危险因素及其预测模型的预测价值.方法回顾性分析2020年1月-2022年7月连云港市第一人民医院收治的116例老年急性左心衰患者的临床资料,根据肺部感染情况分为感染组(65例)和未感染组(51例);... 详细信息

目的探讨老年急性左心衰并发肺部感染病原菌与危险因素及其预测模型的预测价值.方法回顾性分析2020年1月-2022年7月连云港市第一人民医院收治的116例老年急性左心衰患者的临床资料,根据肺部感染情况分为感染组(65例)和未感染组(51例);统计老年急性左心衰患者并发肺部感染的病原菌,并归纳肺部感染的危险因素,并构建预测模型,采用受试者工作特征(ROC)曲线分析预测模型对老年急性左心衰患者并发肺部感染的预测价值.结果65例老年急性左心衰肺部感染患者共培养分离病原菌51株,其中真菌3株占5.88%,革兰阳性菌16株占31.37%,革兰阴性菌32株占62.74%;年龄、合并糖尿病、抗菌药物和激素滥用史、心功能分级Ⅳ级是老年急性左心衰患者并发肺部感染的危险因素(P<0.05).构建预测模型:logit(P)=-10.673+年龄×1.011+合并糖尿病×0.978+抗菌药物和激素滥用史×1.033+心功能分级Ⅳ级×0.896;ROC曲线分析结果显示,预测模型预测老年急性左心衰患者并发肺部感染的曲线下面积(AUC)为0.841,敏感度为69.23%,特异度为80.39%.结论老年急性左心衰患者并发肺部感染的病原菌以革兰阴性菌为主,且感染的危险因素包括年龄、合并糖尿病、抗菌药物和激素滥用史、心功能分级Ⅳ级,据此建立预测模型对老年急性左心衰患者并发肺部感染具有较好的预测价值.

关键词：急性左心衰老年肺部感染病原菌危险因素预测模型

Simplified Adaptive Asymptotic Tracking of Uncertain Nonlinear Systems with Unknown Dead-zone Input

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Simplified Adaptive Asymptotic Tracking of Uncertain Nonline...

术前BNP水平对急性STEMI患者PCI术后炎症介质水平的影响

第36届中国控制会议

作者： liu yong-hua School of Automation Guangdong University of Technology

ISBN: (纸本)9781538629185

This paper is concerned with the problem of dynamic surface asymptotic tracking for a class of uncertain nonlinear systems preceded by unknown input *** utilizing the modified nonlinear filters and a positive time-varying integral function,a smooth adaptive controller is designed via dynamic surface approach,where the compensating terms with the estimate of unknown bounds are employed to eliminate the effects of given continuous functions on a certain compact,unknown deadzone and external *** is shown that all the resulting closed loop signals are semiglobally bounded,and the output tracking error converges to zero ***,simulation results are presented to validate the effectiveness of the proposed design method.

关键词： Nonlinear systems Adaptive control Dynamic surface control Asymptotic tracking Dead-zone

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心血管康复医学杂志 2024年第2期33卷 145-150页

作者：刘华勇阙浩然许学艺陈永东防城港市第一人民医院心血管内科广西防城港538021

目的:探讨术前脑钠肽(BNP)水平对急性ST段抬高型心肌梗死(STEMI)患者经皮冠状动脉介入术(PCI)后炎症介质水平的影响。方法:回顾性收集2022年1月至2023年1月于防城港市第一人民医院成功行PCI治疗的110例急性STEMI患者临床资料,根据术前BN... 详细信息

目的:探讨术前脑钠肽(BNP)水平对急性ST段抬高型心肌梗死(STEMI)患者经皮冠状动脉介入术(PCI)后炎症介质水平的影响。方法:回顾性收集2022年1月至2023年1月于防城港市第一人民医院成功行PCI治疗的110例急性STEMI患者临床资料,根据术前BNP水平的中位数分为高BNP组(n=55)和低BNP组(n=55)。进一步收集患者基线资料及PCI术后72h内的相关炎症指标[C反应蛋白(CRP)、肿瘤坏死因子α(TNF-α)、白细胞介素6(IL-6)、IL-10、IL-12、IL-37、IL-1β]及其他实验室指标,分析急性STEMI患者术前BNP水平与其PCI术后炎症介质水平的关系;同时应用系统炎症指数(SII)评估患者PCI术后72h时机体炎症情况,比较不同SII患者术前血清BNP水平;并比较不同预后患者术前血清BNP水平。结果:与低BNP组比较,高BNP组术后血清CRP[(6.61±1.07)mg/L比(7.14±1.17)mg/L]、TNF-α[(8.29±1.62)μg/L比(9.16±1.54)μg/L]、IL-6[(14.19±2.33)pg/ml比(15.18±1.81)pg/ml]、IL-10[(24.11±5.13)μg/ml比(26.34±4.81)μg/ml]、IL-12[(45.50±4.37)ng/L比(48.19±4.60)ng/L]、IL-37[(184.02±18.33)pg/ml比(195.33±18.94)pg/ml]、IL-1β[(62.09±5.47)ng/L比(64.73±6.58)ng/L]水平显著升高(P<0.05或<0.01)。Pearson直线相关性检验显示,术前血清BNP水平与STEMI患者PCI术后血清CRP、TNF-α、IL-6、IL-10、IL-12、IL-37、IL-1β水平均呈显著正相关(r=0.258~0.394,P均<0.01)。不同SII组间的术前血清BNP水平,低SII组<中SII组<高SII组,P<0.05或<0.01。与预后良好组比较,预后不良组术前血清BNP[(112.84±8.36)pg/ml比(118.63±9.71)pg/ml]水平显著升高(P=0.014);二元Logistic回归分析显示,术前血清BNP水平是STEMI患者PCI术后短期预后不良的独立危险因素(OR=1.082,95%CI:1.014-1.155,P=0.018)。结论:术前血清BNP与急性STEMI患者术后炎症介质水平、短期预后不良有关。

关键词：心肌梗死血管成形术,气囊,冠状动脉利钠肽,脑炎症

Dissection of voltage-gated sodium channels in developing cochlear sensory epithelia

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Protein & Cell 2015年第6期6卷 458-462页

作者： You Zhou Fang-Hao Fang Zhi-Rui liu yong-hua Ji Laboratory of Neuropharmacology and Neurotoxicology ShanghaiUniversity Shanghai 200436 China

Dear Editor Hair cells （HCs） clustered produce spontaneous spike n cochlear sensory epithelia and evoked action potentials during the developmental stage of auditory, which rely on many ion channels, such as Ca2＋ channels, K＋ channels and Na＋ channels （Housley et al., 2006; Marcotti et al., 2003）. As the dominant molecule acting in action potentials in most of excitable cells, Na＋ channels （VGSCs） were deemed to be indispensable in the spontaneous and evoked action po- tentials of HCs （Marcotti et al., 2003）.

关键词： Alternative Splice Hair Cell Editing Site Intracellular Loop Sensory Epithelium

Content-Based Hierarchical Analysis of News Video Using Audio and Visual Information

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Wuhan University Journal of Natural Sciences 2001年第4期6卷 779-783页

作者： Yu Jun-qing Zhou Dong-ru Jin Ye liu hua-yong School of Computer Wuhan University Wuhan 430072 China

A schema for content-based analysis of broadcast news video is presented. First, we separate commercials from news using audiovisual features. Then, we automatically organize news programs into a content hierarchy at various levels of abstraction via effective integration of video, audio, and text data available from the news programs. Based on these news video structure and content analysis technologies, a TV news video Library is generated, from which users can retrieve definite news story according to their demands.

关键词： content-based audio news video segmentation

Integrating Audio-Visual Features and Text Information for Story Segmentation of News Video

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Wuhan University Journal of Natural Sciences 2003年第4A期8卷 1070-1074页

作者： liu hua-yong, Zhou Dong-ru  School of Computer,Wuhan University,Wuhan 430072, Hubei, China School of Computer Wuhan University Wuhan Hubei China

Video data are composed of multimodal information streams including visual, auditory and textual streams, so an approach of story segmentation for news video using multimodal analysis is described in this paper. The proposed approach detects the topic-caption frames, and integrates them with silence clips detection results, as well as shot segmentation results to locate the news story boundaries. The integration of audio-visual features and text information overcomes the weakness of the approach using only image analysis techniques. On test data with 135 400 frames, when the boundaries between news stories are detected, the accuracy rate 85.8% and the recall rate 97.5% are obtained. The experimental results show the approach is valid and robust.

关键词： news video story segmentation audio-visual features analysis text detection

Identification and Expression of a b-actin Gene from Liposcelis bostrychophila Badonnel(Psocoptera:Liposcelididae)

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Agricultural Sciences in China 2011年第9期10卷 1391-1401页

作者： JIANG Hong-bo SHEN Guang-mao DOU Wei TANG Pei-an liu yong-hua ZHOU An-wei WANG Jin-jun Key Laboratory of Entomology and Pest Control Engineering College of Plant Protection Southwest University Chongqing 400716 P. R. China College of Food Science and Engineering Nanjing University of Finance and Economics Nanjing 210003 P.R. China

A β-actin gene, Libβ-actinl, from the psocid, Liposcelis bostrychophila, was isolated, sequenced, and expressed in Escherichia coll. The cDNA sequence was 1 281 bp in length and contained an open reading frame of 1 131 bp encoding 376 amino acids with a predicted molecular weight of 41.82 kDa. According to a B lastN search, the coding region shared the highest identity （97%） with Pediculus hurnanus actin 5C, while the deduced amino acid sequence was completely identical to a mutant of Drosophila melanogaster actin 5C. Comparison of the nucleotide and deduced amino acid sequences confirmed the high similarity between Libβ-actinl and homologs in other insect species. The 3＇ untranslated region （3＇ UTR） of the Libβ-actinl mRNA had a high A＋U content （approximately 75%） and contained three repeats of the AUUUUUA and AUUUA motifs, which may play a role in regulating mRNA decay. The expression of Libβ-actinl was further analyzed in insecticide induced and control psocids. The results indicated that there was no significant difference in expression of Libβ-actinl between the induced and control groups, suggesting that Libβ-actinl may be an appropriate internal control for the gene expression profiling in this insect. Furthermore, Libβ-actinl was also heterologously expressed in Escherichia coli, which provided a basis to investigate the physiological functions of actin genes in the psocid.

关键词： actin sequence analysis expression real-time PCR

Ultra-robust informational metasurfaces based on spatial coherence structures engineering

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Light(Science & Applications) 2024年第7期13卷 1310-1319页

作者： Leixin liu Wenwei liu Fei Wang Xiaofeng Peng Duk-yong Choi hua Cheng Yangjian Cai Shuqi Chen Shandong Provincial Engineering and Technical Center of Light Manipulations Collaborative Innovation Center of Light Manipulation and ApplicationsShandong Provincial Key Laboratory of Optics and Photonic DeviceSchool of Physics and ElectronicsShandong Normal UniversityJinan 250014China. The Key Laboratory of Weak Light Nonlinear Photonics Ministry of EducationSchool of PhysicsSchool of Materials Science and EngineeringSmart Sensing Interdisciplinary Science CenterNankai UniversityTianjin 300071China. School of Physical Science and Technology Soochow UniversitySuzhou 215006China. Laser Physics Centre Research School of PhysicsAustralian National UniversityCanberraACT 2601Australia. The Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuanShanxi 030006China

Optical information transmission is vital in modern optics and photonics due to its concurrent and multi-dimensional nature,leading to tremendous applications such as optical microscopy,holography,and optical *** optical information transmission technologies suffer from bulky optical setup and information loss/crosstalk when meeting scatterers or obstacles in the light ***,we theoretically propose and experimentally realize the simultaneous manipulation of the coherence lengths and coherence structures of the light beams with the disordered *** ultra-robust optical information transmission and self-reconstruction can be realized by the generated partially coherent beam with modulated coherence structure even 93%of light is recklessly obstructed during light transmission,which brings new light to robust optical information transmission with a single *** method provides a generic principle for the generalized coherence manipulation on the photonic platform and displays a variety of functionalities advancing capabilities in optical information transmission such as meta-holography and imaging in disordered and perturbative media.

关键词： optics coherent holography

A novel weld-pool-length monitoring method based on pixel analysis in plasma arc additive manufacturing

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Advances in Manufacturing 2024年第2期12卷 335-348页

作者： Bao-Ri Zhang yong-hua Shi Bionic Robot Research Department Ji Hua LaboratoryFoshan528200GuangdongPeople’s Republic of China Guangdong Provincial Engineering Research Center for Special Welding Technology and Equipment School of Mechanical and Automotive EngineeringSouth China University of TechnologyGuangzhou510640People’s Republic of China

The real-time monitoring of the weld pool during deposition is important for automatic control in plasma arc additive *** obtain a high deposition accuracy,it is essential to maintain a stable weld pool *** this study,a novel passive visual method is proposed to measure the weld pool *** the proposed method,the image quality was improved by designing a special visual system that employed an endoscope and a *** also includes pixel brightness-based and gradient-based algorithms that can adaptively detect feature points at the boundary when the weld pool geometry *** algorithm can also be applied to materials with different solidification *** was performed to measure the real weld pool length in world coordinates,and outlier rejection was performed to increase the accuracy of the ***,tests were carried out on the intersection component,and the results showed that the proposed method performed well in tracking the changing weld pool length and was applicable to the real-time monitoring of different types of materials.

关键词： Plasma arc additive manufacturing(PAAM) Weld pool geometry Gradient analysis Real-time detection