HP阳性慢性浅表性胃炎患者采用益生菌联合铋剂四联治疗价值探讨

目的探究幽门螺旋杆菌阳性慢性浅表性胃炎患者应用益生菌联合铋剂四联治疗的效果。方法将福建省福清市医院自2021年2月至2023年10月收治的120例HP阳性慢性浅表性胃炎患者纳入研究。采用完全随机分组法均分为试验组及对照组,每组均为60例。对照组采用铋剂四联治疗,试验组加用益生菌治疗。比较两组的治疗效果、HP转阴率、临床症状改善情况、胃肠功能水平、炎性因子水平及安全性。结果试验组治疗效果高于对照组(P<0.05);试验组HP转阴率高于对照组(P<0.05);试验组临床症状改善情况中腹胀、恶心呕吐、反酸嗳气及上腹痛症状消失时间均少于对照组(P<0.05);试验组胃肠功能中PGⅠ、PGⅡ水平均低于对照组(P<0.05);试验组胃肠功能中GAS水平高于对照组(P<0.05);试验组不良反应率低于对照组(P<0.05)。结论对比单独应用铋剂四联治疗,益生菌联合治疗能够提高HP阳性慢性浅表性胃炎患者的疗效,改善临床症状及胃肠功能,降低炎性因子水平,且不良反应较少,安全性较好。

Flow Control for a Two-Stage Proportional Valve with Hydraulic Position Feedback

The current research mainly focuses on the flow control for the two-stage proportional valve with hydraulic position feedback which is named as Valvistor valve.Essentially,the Valvistor valve is a proportional throttle valve and the flow fluctuates with the change of load pressure.The flow fluctuation severely restricts the application of the Valvistor valve.In this paper,a novel flow control method the Valvistor valve is provided to suppress the flow fluctuation and develop a high performance proportional flow valve.The mathematical model of this valve is established and linearized.Fuzzy proportional-integral-derivative(PID)controller is adopted in the closed-loop flow control system.The feedback is obtained by the flow inference with back-propagation neural network(BPNN)based on the spool displacement in the pilot stage and the pressure differential across the main orifice.The results show that inference with BPNN can obtain the flow data fast and accurately.With the flow control method,the flow can keep at the set point when the pressure differential across the main orifice changes.The flow control method is effective and the Valvistor valve changes from proportional throttle valve to proportional flow valve.For the developed proportional flow valve,the settling time of the flow is very short when the load pressure changes abruptly.The performances of hysteresis,linearity and bandwidth are in a high range.The linear mathematical model can be verified and the assumptions in the system modeling is reasonable.

CONTROL STRATEGY FOR ELECTRO-HYDRAULIC POSITION SERVO SYSTEM WITH GENERALIZED PULSE CODE MODULATION

A hybrid control strategy has been designed and developed for the electro-hydraulic posi-tion servo control system with generalized Pulse code modulation （GPCM）, which is suitable for the area where the work condition is poor and a large flow rate is required. It is difficult to control the GPCM system because the system is discrete. With consideration of the stability and speediness of the GPCM position servo control system, a control strategy is developed through the theoretical and ex-perimental analyses. The control strategy integrates the merits of Bang-Bang control, PID control and fuzzy control. With this hybrid control strategy, the electro hydraulic control system has good per-formances, and the servo control is carried out with GPCM through on-off valves.

加味补中益气汤对脾胃虚弱型HP阳性慢性萎缩性胃炎患者的临床疗效

目的 探讨加味补中益气汤对脾胃虚弱型HP阳性慢性萎缩性胃炎患者的临床疗效。方法 132例患者随机分为对照组和观察组,每组66例,对照组给予常规治疗,观察组在对照组基础上加用加味补中益气汤,疗程12周。检测临床疗效、HP清除率、miR-32、TGF-β1、IL-6、PGⅠ、PGⅡ、EGF、生长抑素、胃泌素、胃动素、胃镜病理评分、中医证候评分变化。结果 观察组总有效率、HP清除率高于对照组(P<0.05)。治疗后,2组miR-32、TGF-β1、IL-6、胃镜病理评分、中医证候评分降低(P<0.05),PGⅠ、PGⅡ、EGF、生长抑素、胃泌素、胃动素升高(P<0.05),以观察组更明显(P<0.05)。结论 加味补中益气汤可减轻脾胃虚弱型HP阳性慢性萎缩性胃炎患者炎症反应,调节胃肠激素水平,改善症状,提高疗效。

NEW HYDRAULIC ACTUATOR'S POSITION SERVOCONTROL STRATEGY

A new hydraulic actuator-hydraulic muscle （HM） is described, and the actuator＇s features and applications are analyzed, then a position servocontrol system in which HM is main actuator is set up. The mathematical model of the system is built up and several control strategies are discussed. Based on the mathematical model, simulation research and experimental investigation with subsection PID control, neural network self-adaptive PID control and single neuron self-adaptive PID control adopted respectively are carried out, and the results indicate that compared with PID control, neural network self-adaptive PID control and single neuron self-adaptive PID control don＇t need controlled system＇s accurate model and have fast response, high control accuracy and strong robustness, they are very suitable for HM position servo control system.

An Adaptive Model and Algorithm for an Electro-hydraulic Position Servo System in Auto Gauge Control for Aluminum Hot Tandem Mill

The electro-hydraulic servo position control system(HPC) is the core of an auto gap control for a modern four-high continuous hot strip mill.The actuators are loaded with considerable external disturbances,rolling forces,and the system stiffness and position accuracy will become hypersensitive to the leakage and the compressibility of the oil.Many efforts have being made to increase the position accuracies.The conventional resources are proportion-integral-differential(PID) controller.But the PID controller is faint for a considerable external disturbance.In this paper,by introducing the adaptive control strategy of model reference the reciprocities of the system structure with the loads were analyzed.With the Lyapunov energy function,an adaptive control algorithm applied to improve the system accuracy was formulated.The system simulations and the selection of parameters of the model were also discussed.The simulations show the static state errors at 0.02%.Finally,the industrial experimental result was given.

枸橼酸铋钾治疗Hp阳性消化性溃疡的效果及对患者超敏C反应蛋白、白细胞介素-17等炎症因子水平的影响

目的探究和分析枸橼酸铋钾治疗幽门螺杆菌(helicobacter pylori,Hp)阳性消化性溃疡的效果及对患者超敏C反应蛋白、白细胞介素-17等炎症因子水平的影响。方法目的选取仁怀市人民医院2023年12月—2024年3月收治的80例Hp阳性消化性溃疡患者作为研究对象,根据治疗方式不同,分为对照组和观察组,每组40例。对照组治疗方法为三联疗法,观察组治疗方法为三联疗法联合枸橼酸铋钾,对比两组患者治疗前后的炎症因子水平、不良反应发生率及治疗总有效率。结果治疗后,观察组患者炎症因子低于对照组,观察组患者不良反应发生率低于对照组,差异有统计学意义(P均<0.05)。观察组治疗总有效率为95.00%(38/40)高于对照组的80.00%(32/40),差异有统计学意义(χ^(2)=4.114,P<0.05)。结论枸橼酸铋钾治疗Hp阳性消化性溃疡的效果较好,能改善患者机体炎症因子水平,且不良反应少,值得临床应用。

康复新液联合雷贝拉唑四联疗法治疗Hp阳性胃溃疡的有效性及安全性分析

目的探讨康复新液联合雷贝拉唑四联疗法治疗幽门螺杆菌(Hp)阳性胃溃疡的有效性及安全性。方法选择2021年8月—2023年11月邹城市人民医院收治的78例Hp阳性胃溃疡患者为研究对象,按随机数字表法将其分为对照组和观察组,各39例。对照组采用雷贝拉唑四联疗法,观察组在对照组基础上采用康复新液治疗。对比两组的临床疗效、Hp清除率、血脂水平、不良反应发生情况。结果观察组的治疗总有效率、Hp清除率均较对照组高,组间差异有统计学意义(P<0.05)。治疗后,观察组总胆固醇、三酰甘油、低密度脂蛋白胆固醇水平均低于对照组,高密度脂蛋白胆固醇水平高于对照组,组间差异有统计学意义(P<0.05)。两组不良反应发生率比较,差异无统计学意义(P>0.05)。结论在Hp阳性胃溃疡患者中使用康复新液联合雷贝拉唑四联疗法,可显著加强疗效,有效根除Hp,改善血脂水平,且用药安全性较高。

伏诺拉生联合标准四联疗法治疗Hp阳性胃食管反流病患者的效果

目的:观察伏诺拉生联合标准四联疗法治疗幽门螺杆菌(Hp)阳性胃食管反流病患者的效果。方法:选取2021年2月至2023年3月该院收治的80例Hp阳性胃食管反流病患者进行前瞻性研究,按照随机数字表法将其分为研究组与对照组各40例。对照组采用标准四联疗法治疗,研究组在对照组基础上联合伏诺拉生治疗,比较两组临床疗效、Hp根除率及治疗前后食管括约肌静息压[食管上括约肌(UES)静息压、食管下括约肌(LES)静息压]水平、胃肠激素指标[胃蛋白酶原I(PGI)、胃泌素-17(G-17)]水平和胃肠黏膜屏障功能指标[二胺氧化酶(DAO)、D-乳酸、内毒素]水平。结果:研究组治疗总有效率为97.50%(39/40),高于对照组的77.50%(31/40),差异有统计学意义(P<0.05);研究组Hp根除率为87.50%(35/40),高于对照组的67.50%(27/40),差异有统计学意义(P<0.05);治疗后,两组USE静息压、LES静息压水平均高于治疗前,且研究组高于对照组,差异有统计学意义(P<0.05);两组PGI、G-17水平均低于治疗前,且研究组低于对照组,差异有统计学意义(P<0.05);两组DAO、D-乳酸、内毒素水平均低于治疗前,且研究组低于对照组,差异有统计学意义(P<0.05);两组不良反应发生率比较,差异无统计学意义(P>0.05)。结论:伏诺拉生联合标准四联治疗Hp阳性胃食管反流病患者可提高临床疗效、Hp根除率、食管括约肌静息压水平,改善胃肠激素指标和胃肠黏膜屏障功能指标水平,其效果优于单纯标准四联疗法治疗。

Angular Position Controller and Its Design Model Verification for the Electro-Hydraulic Servo Control System

The angular position controller is system （EHSAS） to control the output of the rotary applied to electro-hydraulic servo actuator actuator. It works as a compensator based on the frequency response of the EHSAS. Its design model is verified on the state-space model of EHSAS by using simulation program SIMULINK. Real data used to test the system. Simulation results give a good agreement for the controller and also for the state-space model.

康复新液联合四联疗法对Hp阳性胃溃疡患者炎症因子及胃肠道激素水平的影响

目的:探讨幽门螺杆菌(Hp)阳性胃溃疡(GU)患者应用康复新液联合四联疗法治疗的效果。方法:采用随机数字表法将2020年5月-2022年5月于九江市第一人民医院就诊的92例Hp阳性GU患者分为两组,每组46例。对照组予以四联疗法治疗,观察组在对照组基础上加用康复新液治疗,均连续治疗2周。比较两组临床疗效、炎症因子水平、胃肠道激素水平、生活质量、Hp根除率及不良反应。结果:治疗后,观察组总有效率、生活质量评分及Hp根除率均较对照组高,肿瘤坏死因子-α(TNF-α)、白介素-6(IL-6)、C反应蛋白(CRP)、胃泌素(GAS)、胃动素(MTL)水平均较对照组低,差异均有统计学意义(P<0.05)。两组不良反应发生率比较,差异无统计学意义(P>0.05)。结论:Hp阳性GU患者应用康复新液联合四联疗法治疗,利于减轻炎症反应,调节胃肠道激素,提高生活质量,效果显著,安全可靠。

基于Simulink/SimHydraulics的阀控二级液压缸系统的建模与仿真

介绍SimHydraulics软件的特点和二级双作用液压缸的基本工作原理,利用Simulink/SimHydraulics软件,采用两个单级双作用液压缸级联的方式建立二级双作用液压缸的模型,对阀控二级液压缸位置控制系统进行仿真分析。仿真结果表明了模型的有效性,为多级液压缸的建模提供了方法。

Application of Simple Adaptive Control to Water Hydraulic Servo Cylinder System

Although conventional model reference adaptive control （MRAC） achieves good tracking performance for cylinder control, the controller structure is much more complicated and has less robustness to disturbance in real applications. This paper discusses the use of simple adaptive control （SAC） for positioning a water hydraulic servo cylinder system. Compared with MRAC, SAC has a simpler and lower order structure, i.e., higher feasibility. The control performance of SAC is examined and evaluated on a water hydraulic servo cylinder system. With the recent increased concerns over global environmental problems, the water hydraulic technique using pure tap water as a pressure medium has become a new drive source comparable to electric, oil hydraulic, and pneumatic drive systems. This technique is also preferred because of its high power density, high safety against fire hazards in production plants, and easy availability. However, the main problems for precise control in a water hydraulic system are steady state errors and overshoot due to its large friction torque and considerable leakage flow. MRAC has been already applied to compensate for these effects, and better control performances have been obtained. However, there have been no reports on the application of SAC for water hydraulics. To make clear the merits of SAC, the tracking control performance and robustness are discussed based on experimental results. SAC is confirmed to give better tracking performance compared with PI control, and a control precision comparable to MRAC （within 10 μm of the reference position） and higher robustness to parameter change, despite the simple controller. The research results ensure a wider application of simple adaptive control in real mechanical systems.

HYBRID CONTROL OF HYDRAULIC PRESS MACHINE BASED ON ROBUST CONTROL

A robust control algorithm is proposed to focus on the non-linearity and variables of the hydraulic press machine with the proportional vatve. The proposed robust controller does not need to design stable compensator in advance, which is simple in design and has large scope of uncertainty applications. The feedback gains of the proposed robust controller are small, so it is easily implemented in engineering applications. The theoretical and experimental research on the position and speed control of the hydraulic press machine is carried out. The control requirements of the hydraulic press machine during the working process are met in the position and speed at the same time. Experimental results show that the proposed controller has better robustness subject to load variables and adaptability of parameter variations of the hydraulic press machine with the proportional valve.

藿香消痞汤联合泮托拉唑四联方案治疗Hp阳性慢性胃炎效果分析

目的:探究藿香消痞汤联合泮托拉唑四联方案治疗Hp阳性慢性胃炎的治疗效果。方法:选择2020年2月—2022年1月接受治疗的86例Hp阳性慢性胃炎患者,按随机数字表法分为2组,各43例。对照组采用泮托拉唑四联方案治疗,观察组在此基础上结合藿香消痞汤治疗,2组均为连续治疗4周。比较2组临床疗效、Hp根治率、随访复发情况、临床症状变化及不良反应发生情况。结果:观察组有效率为90.70%显著高于对照组的74.42%;观察组治疗后Hp根除率、3个月复发率和6个月的复发率均显著低于对照组;观察组治疗后主症积分、次症积分、总积分均显著低于对照组,差异均有统计学意义。结论:Hp阳性慢性胃炎给予藿香消痞汤联合泮托拉唑四联方案治疗可提高临床疗效,有助于改善临床症状,提高Hp根除率,预防病情再次复发,且安全可靠。

标准四联联合荆花胃康胶丸对Hp阳性慢性萎缩性胃炎病人血清胃泌素17、PG及免疫功能的影响

目的:分析标准四联联合荆花胃康胶丸对幽门螺旋杆菌(Hp)阳性慢性萎缩性胃炎病人血清胃泌素17(gastrin 17,G-17)、胃蛋白酶原(pepsinogen,PG)及免疫功能的影响。方法:选择120例Hp阳性慢性萎缩性胃炎病人作为研究对象。按随机数字表法分为2组,其中对照组60例,采用标准四联疗法;观察组60例,在对照组基础上联合荆花胃康胶丸进行治疗。比较2组临床疗效、Hp根除率、治疗前后血清G-17、PGⅠ、PGⅡ、CD4^(+)、CD8^(+)、CD4^(+)/CD8^(+)水平及不良反应发生情况。结果:观察组临床总有效率为93.33%,Hp清除率为96.67%,高于对照组的75.00%和81.67%,差异均有统计意义(P<0.01);2组治疗后血清G-17、PGⅠ水平均明显上升,PGⅡ水平明显下降,且观察组血清G-17、PGⅠ水平高于对照组,PGⅡ水平低于对照组,差异均有统计意义(P<0.05~P<0.01);2组治疗后CD4^(+)和CD4^(+)/CD8^(+)水平均明显升高,CD8^(+)明显降低,且观察组CD4^(+)、CD8^(+)、CD4^(+)/CD8^(+)水平明显优于对照组,差异均有统计意义(P<0.05~P<0.01);2组不良反应率差异无统计意义(P>0.05)。结论:标准四联联合荆花胃康胶丸能够有效改善Hp阳性慢性萎缩性胃炎病人血清G-17、PG及免疫功能水平,提高Hp清除率及临床总有效率,值得临床予以推广应用。

双歧杆菌四联活菌片联合四联疗法对HP阳性胃溃疡患者临床症状分析

目的探究双歧杆菌四联活菌片联合四联疗法对幽门螺旋杆菌(Helicobacter pylori HP)阳性胃溃疡患者临床症状及血清炎性因子、胃泌素的影响。方法选取2021年8月至2022年9月本院收治的HP阳性胃溃疡患者62例,按随机数字表法分为对照组和观察组各31例。对照组采用四联疗法治疗,观察组在对照组的基础上加用双歧杆菌四联活菌片治疗,两组患者均持续治疗14 d。对比两组临床疗效、临床症状消失时间、血清炎性因子及胃泌素水平、不良反应。结果观察组临床总有效率为96.77%,高于对照组的70.96%,差异有统计学意义(P<0.05)。观察组腹胀症状消失时间、反酸症状消失时间、嗳气症状消失时间、腹痛症状消失时间短于对照组,差异有统计学意义(P<0.05)。治疗前,两组血清炎性因子、GAS比较,差异无统计学意义(P>0.05);治疗后,观察组血清白介素-6(IL-6)、C反应蛋白(CRP)、胃泌素均低于对照组,差异有统计学意义(P<0.05)。两组不良反应发生率比较差异无统计学意义(P>0.05)。结论双歧杆菌四联活菌片联合四联疗法在HP阳性胃溃疡患者中疗效确切,能够缩短反酸、嗳气等症状消失时间,降低IL-6、CRP等炎性因子水平,且安全性高,值得临床推广应用。

替普瑞酮对老年HP阳性慢性萎缩性胃炎患者胃肠道激素及血清PGⅠ、PGⅡ的影响

目的 评估替普瑞酮应用在老年幽门螺杆菌(helicobacter pylori, HP)阳性慢性萎缩性胃炎(chronic atrophic gastritis, CAG)患者中的效果及对胃肠道激素、血清胃蛋白酶原Ⅰ(serum pepsinogen Ⅰ, PG Ⅰ)、胃蛋白酶原Ⅱ(serum pepsinogen Ⅱ, PG Ⅱ)的影响。方法 选取2021年1月-2022年4月中国人民解放军海军第971医院收治的80例老年HP阳性CAG患者为研究对象,参照随机数表法分为两组,各40例。对照组采用叶酸+三联疗法,观察组加用替普瑞酮,评价两组胃肠道激素[表皮生长因子(epidermal growth factor, EGF)、生长抑素(somatostatin, SS)、降钙素基因相关肽(calcitonin gene-related peptide, CGRP)]、PGⅠ、PGⅡ、胃蛋白酶原比值(PGⅠ/PGⅡ, PGR)、炎性因子[肿瘤坏死因子-α(tumor necrosis factor-alpha, TNF-α)、白细胞介素-11(interleukin-11, IL-11)、白细胞介素-8(interleukin-8, IL-8)]及不良反应发生率。结果 治疗3个月后,相比于对照组,观察组EGF、PGⅡ、TNF-α、IL-11、IL-8更低,SS、CGRP、PGⅠ、PGR更高,差异有统计学意义(P<0.05);观察组不良反应发生率(12.50%)与对照组(10.00%)相比,差异无统计学意义(χ2=0.000,P>0.05)。结论 对老年HP阳性CAG患者行替普瑞酮治疗,可以减轻炎症反应,改善胃蛋白酶原分泌情况及胃肠道激素,不良反应少。

不同疗程双歧杆菌四联活菌片辅助治疗Hp阳性胃溃疡患者的效果

目的:探讨不同疗程双歧杆菌四联活菌片辅助治疗Hp阳性胃溃疡患者的效果。方法:将2020年4月—2022年5月恩施市中心医院收治的204例Hp阳性胃溃疡患者作为研究对象,按照计算机分组法将其分为三组,A组(n=68)予以14 d铋剂四联方案,B组(n=68)在A组方案治疗的第2周同时服用双歧杆菌四联活菌片(后半疗程7 d双歧杆菌四联活菌片辅助铋剂四联方案),C组(n=68)在A组方案基础上同时服用双歧杆菌四联活菌片(14 d双歧杆菌四联活菌片辅助铋剂四联方案)。对比分析两组溃疡愈合率、胃黏膜指标、Hp根除率及不良反应发生率。结果:三组溃疡愈合率对比,差异无统计学意义(P>0.05)。治疗结束后,三组溃疡直径、底部厚苔面积、溃疡周围黏膜充血面积均缩小,再生上皮面积均增大,差异有统计学意义(P<0.05),但三组上述指标组间对比,差异无统计学意义(P>0.05)。三组Hp根除率对比,差异无统计学意义(P>0.05)。C组不良反应发生率低于A组、B组,差异有统计学意义(P<0.017)。结论:14 d及后半疗程7 d双歧杆菌四联活菌片辅助铋剂四联方案治疗Hp阳性胃溃疡效果相当,均可有效根除Hp,促进胃黏膜形态恢复,提高溃疡愈合率,但14 d内同期使用双歧杆菌四联活菌片不良反应较少,安全性更高。