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基于开放式通信协议的优化系统接口程序设计与开发

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软件 2021年第1期42卷 71-73页

作者：杜石雷刘继伟赵磊穆蔚伟天津理工大学中环信息学院天津300380

为了高效利用智能控制算法,达到对非线性系统的精确控制,Matlab作为外接式优化系统实施平台有着先天优势。本文对Matlab平台下的开放式通信协议进行程序设计与开发,分别建立了OPC和Modbus协议数据接口,极大地便利了以Matlab为运行环境... 详细信息

为了高效利用智能控制算法,达到对非线性系统的精确控制,Matlab作为外接式优化系统实施平台有着先天优势。本文对Matlab平台下的开放式通信协议进行程序设计与开发,分别建立了OPC和Modbus协议数据接口,极大地便利了以Matlab为运行环境的优化系统与原有系统的互通、互联和互操作性。测试实验表明,该接口程序运行稳定,数据通信速率满足设计要求,时间迟延在容许范围内,具备较强的推广和实用价值。

关键词：通信接口 OPC Modbus

儿童重症肺炎支原体肺炎发生塑形性支气管炎的预测因素

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中华儿科杂志 2024年第9期62卷 861-866页

作者：穆世茵邹映雪郭永盛黄冰高微微张甜文兴达天津市儿童医院(天津大学儿童医院)马场院区呼吸科天津市儿童出生缺陷防治重点实验室天津300074

目的探讨儿童重症肺炎支原体肺炎(SMPP)发生塑形性支气管炎(PB)的临床特征及预测因素。方法回顾性队列研究。选取2018年1月1日至2023年10月31日天津市儿童医院马场院区呼吸科收治的SMPP合并PB的142例患儿为PB组,选取同期住院的274例未发... 详细信息

目的探讨儿童重症肺炎支原体肺炎(SMPP)发生塑形性支气管炎(PB)的临床特征及预测因素。方法回顾性队列研究。选取2018年1月1日至2023年10月31日天津市儿童医院马场院区呼吸科收治的SMPP合并PB的142例患儿为PB组,选取同期住院的274例未发生PB的SMPP患儿为非PB组,分析两组临床表现、实验室指标、影像学特征及治疗情况。采用Mann-Whitney U检验及χ^(2)检验分析组间差异,采用Logistic回归分析SMPP患儿发生PB的危险因素,采用受试者操作特征(ROC)曲线分析对PB的预测价值。结果416例SMPP患儿中男197例、女219例,PB组142例,就诊年龄(6.9±2.9)岁,非PB组274例,就诊年龄(6.6±2.8)岁。PB组出现喘息、低氧血症、热峰值>40℃比例、发热持续时间、中性粒细胞计数、平均血小板体积、C反应蛋白、降钙素原、白细胞介素-6、丙氨酸转氨酶、天冬氨酸转氨酶、铁蛋白水平均高于非PB组[16例(11.3%)比15例(5.5%)、14例(9.9%)比12例(4.4%)、57例(40.1%)比67例(24.5%)、10(8,12)比9(8,12)d、6.1(4.1,13.1)×109比5.0(3.7,6.8)×109/L、10.2(9.6,10.8)比9.4(8.9,10.1)fl、33.4(16.0,67.5)比23.0(10.4,56.1)mg/L、0.24(0.12,0.48)比0.16(0.09,0.31)μg/L、39.9(25.1,81.4)比31.3(18.3,59.3)ng/L、16.0(12.0,29.0)比14.0(10.0,24.3)U/L、38.5(28.0,52.5)比33.0(25.0,44.0)U/L、233(136,488)比156(110,293)μg/L,χ^(2)=4.55、4.79、11.00,Z=2.25、4.00、6.64、2.76、2.98、3.09、2.22、2.62、4.18,均P2.79)及胸腔积液是其发生PB的重要预测指标,有助于早期识别。

关键词：支原体,肺炎重症肺炎塑形性支气管炎儿童

circ0054633对儿童重症肺炎致急性肺损伤/急性呼吸窘迫综合征的早期诊断及预后预测价值

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中华危重病急救医学 2024年第9期36卷 957-961页

作者：穆世茵邹映雪郭永盛于玫黄冰高微微张甜天津市儿童医院(天津大学儿童医院)马场院区呼吸科天津市儿童出生缺陷防治重点实验室天津300074

目的探讨环状RNA circ0054633对儿童重症肺炎致急性肺损伤/急性呼吸窘迫综合征(ALI/ARDS)的早期诊断及预后预测价值。方法采用回顾性病例对照研究方法, 选择2022年7月1日至2024年2月29日天津市儿童医院收治的确诊重症肺炎患儿作为研究... 详细信息

目的探讨环状RNA circ0054633对儿童重症肺炎致急性肺损伤/急性呼吸窘迫综合征(ALI/ARDS)的早期诊断及预后预测价值。方法采用回顾性病例对照研究方法, 选择2022年7月1日至2024年2月29日天津市儿童医院收治的确诊重症肺炎患儿作为研究对象。通过电子病历系统查询及随访形式收集患儿临床资料, 包括性别、年龄、入院24 h内肺损伤预测评分(LIPS)、小儿危重病例评分(PCIS)、血清circ0054633和白细胞介素-6(IL-6)水平、动脉血气分析指标、氧合指数(PaO2/FiO2), 以及28 d存活情况。根据重症肺炎是否进展为ALI/ARDS将患儿分为ALI/ARDS组和非ALI/ARDS组。比较各组重症肺炎患儿临床资料的差异;将具有统计学意义的指标纳入多因素Logistic回归分析, 探讨重症肺炎患儿发生ALI/ARDS的危险因素;采用受试者工作特征曲线(ROC曲线)分析各危险因素对重症肺炎患儿发生ALI/ARDS的早期诊断价值。根据PaO2/FiO2水平将ALI/ARDS组患儿分为轻度组、中度组和重度组。比较不同病情严重程度各组ALI/ARDS患儿血清circ0054633和IL-6水平的差异, 以及不同28 d预后两组ALI/ARDS患儿血清circ0054633和IL-6水平、PCIS评分、LIPS评分的差异, 并分析各危险因素与circ0054633的相关性。结果共纳入74例重症肺炎患儿, 其中ALI/ARDS组34例, 非ALI/ARDS组40例。ALI/ARDS组患儿中, 轻度组9例, 中度组15例, 重度组10例;28 d死亡12例, 存活22例。ALI/ARDS组患儿血清circ0054633、IL-6水平及LIPS评分均明显高于非ALI/ARDS组, PCIS评分则明显低于非ALI/ARDS组, 差异均有统计学意义。多因素Logistic回归分析显示, circ0054633为重症肺炎患儿发生ALI/ARDS的独立危险因素〔优势比(OR)=3.853, 95%可信区间(95%CI)为1.912~7.805, P=0.017〕;ROC曲线进一步分析显示, circ0054633预测重症肺炎患儿发生ALI/ARDS的ROC曲线下面积(AUC)为0.892, 临界值为3.955, 敏感度为79.4%, 特异度为92.5%。随病情加重, ALI/ARDS组患儿的血清circ0054633和IL-6水平均呈明显升高趋势;死亡组患儿的血清circ0054633和IL-6水平均明显高于存活组, PCIS评分则明显低于存活组, 差异均有统计学意义。Spearman相关性分析显示, ALI/ARDS患儿血清circ0054633水平与28 d生存情况和IL-6水平均呈正相关(r值分别为0.675和0.763, 均P<0.001), 与PCIS评分呈负相关(r=-0.626, P<0.001), 与LIPS评分无显著相关性(r=0.389, P=0.023)。结论血清circ0054633水平对重症肺炎患儿发生ALI/ARDS的早期诊断及预后预测价值均较高。

关键词： circ0054633 儿童重症肺炎急性肺损伤急性呼吸窘迫综合征

杭白菊提取物中辅料麦芽糊精的中红外快速定量分析

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药学研究 2022年第6期41卷 373-377页

作者：刘艳李燕青丁姗姗牟卫伟王磊冯帅烟台市食品药品检验检测中心山东烟台264003 烟台新时代健康产业有限公司山东烟台264006 山东中医药大学山东济南250355

目的建立一种对杭白菊提取物中麦芽糊精含量进行快速定量的中红外分析方法。方法以78份不同麦芽糊精含量的杭白菊提取物为实验对象,对采集到的已知麦芽糊精含量的样品谱图进行图谱预处理,以偏最小二乘法建立含量测定模型。结果所建含量... 详细信息

目的建立一种对杭白菊提取物中麦芽糊精含量进行快速定量的中红外分析方法。方法以78份不同麦芽糊精含量的杭白菊提取物为实验对象,对采集到的已知麦芽糊精含量的样品谱图进行图谱预处理,以偏最小二乘法建立含量测定模型。结果所建含量测定模型的决定系数R^(2)为0.9987,预测标准差为1.137。结论所建含量测定模型测定效果较好、稳定性强、检测精度高,可用于杭白菊提取物中麦芽糊精含量的快速分析。

关键词：麦芽糊精杭白菊提取物中红外光谱法偏最小二乘法

The Influence of Fuel-Air Swirl Intensity on Flame Structures of Syngas Swirl-Stabilized Diffusion Flame

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Journal of Thermal Science 2010年第3期19卷 276-283页

作者： weiwei Shao Yan Xiong Kejin mu Zhedian Zhang Yue Wang Yunhan Xiao Research Center for Energy and Power Chinese Academy of Sciences Beijing China Key Laboratory of Advanced Energy and Power Chinese Academy of Sciences (Institute of Engineenng Thermophysics) Beijing China P.O. Box 2706 Beijing 100190 China Nanjing TianLing Energy Tech. Co Ltd Jiangsu 210018 China

Flame structures of a syngas swirl-stabilized diffusion flame in a model combustor were measured using the OH-PLIF method under different fuel and air swirl *** flame operated under atmospheric pressure with air and a typical low heating-value syngas with a composition of 28.5% CO,22.5% H2 and 49% N2 at a thermal power of 34 *** indicate that increasing the air swirl intensity with the same fuel,swirl intensity flame structures showed little difference except a small reduction of flame length;but also,with the same air swirl intensity,fuel swirl intensity showed great influence on flame shape,length and reaction zone ***,compared with air swirl intensity,fuel swirl intensity appeared a key effect on the flame structure for the model *** OH-PLIF images showed that three distinct typical structures with an obvious difference of reaction zone distribution were found at low swirl intensity,while a much compacter flame structure with a single,stable and uniform reaction zone distribution was found at large fuel-air swirl *** means that larger swirl intensity leads to efficient,stable combustion of the syngas diffusion flame.

关键词： Diffusion Flame Swirl Intensity Flame Structure OH-PLIF

Attitudes Decoupling Control and Disturbance Compensation of the Hypersonic Vehicle

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Attitudes Decoupling Control and Disturbance Compensation of...

Reference values of carotid intima-media thickness and arterial stiffness in Chinese adults based on ultrasound radio frequency signal:A nationwide,multicenter study

第26届中国控制与决策会议

作者： Yan Zhiqiang mu Jianhua Qu Jishuang Xia weiwei Second Artillery Equipment Academe

ISBN: (纸本)9781479937066

For the nonlinear coupling control problem induced by the maneuver flying with high angle of attack of the hypersonic vehicle, the dynamic inversion is used to realize the decoupling of the attack angle and bank angle dynamics. For the model uncertainty, parameter perturbation and outer disturbance, the estimation and compensation of the disturbance moments is carried out by the extended state observer. The second order dynamics is developed for the controller outer loop to achieve the expected transitions with dynamic performance constraints. The simulation shows the feasibility of the method, which can maintain the command tracing quality of the attitude control system with deviation and disturbance.

关键词： Hypersonic Vehicle Dynamic Inversion Extended State Observer Decoupling Control

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Chinese Medical Journal 2024年第15期137卷 1802-1810页

作者： Changyang Xing Xiujing Xie Yu Wu Lei Xu Xiangping Guan Fan Li Xiaojun Zhan Hengli Yang Jinsong Li Qi Zhou Yuming mu Qing Zhou Yunchuan Ding Yingli Wang Xiangzhu Wang Yu Zheng Xiaofeng Sun Hua Li Chaoxue Zhang Cheng Zhao Shaodong Qiu Guozhen Yan Hong Yang Yinjuan Mao weiwei Zhan Chunyan Ma Ying Gu Wu Chen Mingxing Xie Tianan Jiang Lijun Yuan Department of Ultrasound Medicine Tangdu HospitalAir Force Medical UniversityXi’anShaanxi 710038China Department of Ultrasound Medicine The First Affiliated HospitalZhejiang University School of MedicineHangzhouZhejiang 310003China Department of Ultrasound Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubei 430022China Department of Ultrasound Xi’an Hospital of Traditional Chinese MedicineXi’anShaanxi 710021China Ultrasound Medical Diagnosis Center Shaanxi Provincial People’s HospitalXi’anShaanxi 710068China Department of Ultrasound Hospital of Northwestern Polytechnical UniversityXi’anShaanxi 710072China Department of Ultrasound Xi’an No.1 HospitalThe First Affiliated Hospital of Northwest UniversityXi’anShaanxi 710002China Department of Ultrasound Diagnosis The Second Affiliated HospitalXi’an Medical CollegeXi’anShaanxi 710038China Department of Ultrasound Xi’an Gem Flower ChangQing HospitalXi’anShaanxi 710201China Department of Ultrasound The Second Affiliated Hospital of Xi’an Jiaotong UniversityChinaXi’anShaanxi 710004China Department of Echocardiography First Affiliated Hospital of Xinjiang Medical UniversityUrumqiXinjiang 830011China Department of Ultrasound Renmin Hospital of Wuhan UniversityWuhanHubei 430060China Department of Ultrasound Yan’an HospitalThe Affiliated Hospital of Kunming Medical UniversityKunmingYunnan 650051China Department of Ultrasound Yan’an University Xianyang HospitalXianyangShaanxi 712000China Department of Function Examination Beijing University of Chinese Medicine Third Affiliated HospitalBeijing 100029China Department of Ultrasound Xi’an Central HospitalXi’anShaanxi 710004China Cadre’s Wards Ultrasound Department Diagnostic Ultrasound CenterFirst Hospital of Jilin UniversityChangchunJilin 130000China Department of Echocardiography Affiliated Hospital of Traditional Chinese Medicine of Xinjiang Medical UniversityUrumqiXinjiang 830002China Department of Ultrasound First Affiliated

Background:Carotid intima-media thickness(IMT)and diameter,stiffness,and wave reflections,are independent and important clinical biomarkers and risk predictors for cardiovascular *** purpose of the present study was to establish nationwide reference values of carotid properties for healthy Chinese adults and to explore potential clinical ***:A total of 3053 healthy Han Chinese adults(1922 women)aged 18-79 years were enrolled at 28 collaborating tertiary centers throughout China between April 2021 and July *** real-time tracking of common carotid artery walls was achieved by the radio frequency(RF)ultrasound *** IMT,diameter,compliance coefficient,βstiffness,local pulse wave velocity(PWV),local systolic blood pressure,augmented pressure(AP),and augmentation index(AIx)were then automatically measured and *** were stratified by age groups and *** relationships between age and carotid property parameters were analyzed by Jonckheere-Terpstra test and simple linear *** major clinical determinants of carotid properties were identified by Pearson’s correlation,multiple linear regression,and analyses of ***:All the parameters of carotid properties demonstrated significantly age-related *** showed thinner IMT,smaller carotid diameter,larger AP,and AIx than ***βstiffness and PWV were significantly higher in men than women before forties,but the differences reversed after *** increase rate of carotid IMT(5.5µm/year in women and 5.8µm/year in men)and diameter(0.03 mm/year in both men and women)were similar between men and *** the stiffness and wave reflections,women showed significantly larger age-related variations than men as demonstrated by steeper regression slopes(all P for age by sex interaction<0.05).The blood pressures,body mass index(BMI),and triglyceride levels were identified as major clinical determinants of carotid properties with adjustment of age and ***

关键词： Intima-media thickness Arterial stiffness Reference values Ultrasound radio frequency signal Wave reflections

An increase in corn resistant starch decreases protein fermentation and modulates gut microbiota during in vitro cultivation of pig large intestinal inocula

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Animal Nutrition 2017年第3期3卷 219-224页

作者： Xiangyu He weiwei Sun Ting Ge Chunlong mu Weiyun Zhu Jiangsu Key Laboratory of Gastrointestinal Nutrition and Animal Health Laboratory of Gastrointestinal MicrobiologyCollege of Animal Science and TechnologyNanjing Agricultural University

High-protein diet could cause an increase in protein fermentation in the large intestine, leading to an increased production of potentially detrimental metabolites. We hypothesized that an increase in corn resistant starch content may attenuate the protein fermentation. The aim of this study was to evaluate the effect of resistant starch on protein fermentation by inocula from large intestine of pigs using in vitro cultivation. Fermentation patterns were analyzed during a 24-h incubation of cecal and colonic digesta with varying corn resistant starch contents, using casein protein as sole nitrogen source. The results showed that the concentration of short-chain fatty acids(SCFA) and cumulative gas production were significantly increased(P < 0.05), while ammonia-nitrogen(NH_3-N) and branched-chain fatty acids(BCFA), which indicated protein fermentation, decreased when the corn resistant starch levels increased(P < 0.05). The copies of total bacteria, Bifidobacterium and Lactobacillus were significantly increased with the increased corn resistant starch levels after incubation(P < 0.05). The copies of the Bifidobacterium and Lactobacillus in cecum were significantly higher than those in colon(P < 0.05). We conclude that the addition of corn resistant starch weakens the protein fermentation by influencing microbial population and reducing protein fermentation in the cecum and colon in vitro.

关键词： Pig large intestine Corn resistant starch Protein Fermentation characteristics Gut microbiota

Effect of Long-Term Low-Salinity Culture on the Survival, Growth, and Nutrient Composition of mud Crab Scylla paramamosain

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Journal of Ocean University of China 2022年第1期21卷 179-185页

作者： JI Zilu LI Ronghua WANG Chunlin ZHANG Zhouyi ZHANG Weijia mu Changkao SONG weiwei Key Laboratory of Applied Marine Biotechnology Ministry of EducationNingbo UniversityNingbo 315211China Collaborative Innovation Center for Zhejiang Marine High-Efficiency and Healthy Aquaculture Ningbo UniversityNingbo 315211China

This study investigated the effects of long-term low-salinity on the growth performance,proximate composition,amino acid and fatty acid profiles of Scylla *** salinity of the low-salinity-culture group(LC)and maintained-salinity-cul-ture group(MC)were set at 5 and 25 *** rearing for 30 d,the survival rate(SR)of the LC group was significantly lower,whereas the average daily molting frequency(ADMF)was significantly higher than those in MC group(Pmuscle of *** total amino acids(TAA),essen-tial amino acids(EAA)and essential amino acid index(EAAI)had no significant difference between the two *** crabs from LC group had a significantly higher HUFA,including EPA,DHA,*** percentage of n-3 PUFA and the ratio of n-3/n-6 PUFA were significantly higher in the LC *** results indicated that *** rearing at low salinity had significantly de-creased SR;however,the low-salinity environment significantly promoted the accumulation of unsaturated fatty acids(UFAs),espe-cially the n-3 PUFA,which might be related to the osmoregulation mechanism.

关键词： Scylla paramamosain low salinity survival growth nutrient composition