张掖市不同民族H型高血压与2型糖尿病冠状动脉硬化的相关性研究

研究张掖市不同民族H型高血压与2型糖尿病冠状动脉硬化的相关性。选择张掖市2型糖尿病冠状动脉硬化患者85例作为研究对象,其中32例合并H型高血压。将2型糖尿病冠状动脉硬化且非H型高血压的53例患者作为对照组,2型糖尿病冠状动脉硬化合并H型高血压的32例患者作为观察组。收集所有患者临床一般资料,对患者血液相关指标及血压进行检测并比较。两组患者一般资料相比,性别、年龄差异无统计学意义(P0.05),民族、2型糖尿病病程、BMI指数差异具有统计学意义(P0.05),两组患者FPG、Hb A1c、TC、TG、HDL、LDL、Hcy等血液相关指标及SBP、DBP等血压指标相比,对照组均明显优于观察组,差异具有统计学意义(P0.05)。张掖市H型高血压发病率与2型糖尿病冠状动脉硬化患病情况呈正相关,且裕固族H型高血压合并2型糖尿病冠状动脉硬化患病情况明显高于汉族。     

张掖市H型高血压发病现状分析

调查张掖市H型高血压发病情况,并分析其发病现状。选取张掖市1800例符合研究条件的H型高血压患者,经问卷调查、血压检查和实验室检查分析HG型高血压的发病情况及特点。本研究调查1800例H型高血压患者中,男性患者所占比例58.89%,稍高于女性患者的41.11%,比较差异无统计学意义(P0.05);年龄结构以60~70为主,所占比例达76.44%,均高于60岁及以下和70岁及以上所占比例,比较差异有统计学意义(P0.05);本研究调查1800例H型高血压患者中对H型高血压病情了解率14.61%,女性患者对H型高血压的了解率25.41%,高于男性患者的7.08%,差异有统计学意义(P0.05)。张掖市H型高血压男性发病率较高,且对H型高血压病情了解不足,应针对发病现状,采用针对性措施,以改善患者病情,提高生活质量。     

马来酸依那普利叶酸片治疗H型高血压的应用效果分析

探析H型高血压患者采取马来酸依那普利叶酸片治疗的效果。2016年6月～2018年6月随机选取100例在医院心血管内科接受诊治的H型高血压患者作为研究组,接受马来酸依那普利叶酸片治疗,2017年6月～2018年6月随机选取100例在医院心血管内科接受诊治的H型高血压患者作为对照组,接受马来酸依那普利片治疗,比较血压与Hcy水平变化情况、并发症发生情况。治疗12个月2组上述指标水平均明显降低(P0.05),且研究组明显低于对照组(P0.05),研究组治疗24个月上述指标水平明显低于治疗12个月(P0.05);对照组心脑血管事件发生率22.73%明显高于研究组6.82%(P0.05);研究组治疗24个月新发心肌梗死1例,与治疗12个月心脑血管事件发生率比较,差异无统计学意义(P0.05)。马来酸依那普利叶酸片治疗H型高血压,既可有效降压,使得患者拥有稳定血压,又可降Hcy水平,使得心脑血管疾病发生的概率降低,更好维持治疗效果。     

3-D Design and Numerical Simulation of Two-Phase Flow in the Laser Rapid Prototyping Coaxial Powder Delivery System

The metal powder direct and rapid prototyping technology is one of the most developing methods in the laser rapid prototyping technique. The coaxial powder delivery system is the key technique. The purpose of this paper is to introduce a new type of coaxial powder delivery system and simulate the metal powder and shield gas flow in the powder nozzle. 2-D and 3-D model of the new coaxial powder delivery system are established. Then gas-solid two-phase flow model and the k-ε turbulent model are selected to simulate the flow of metal powder in powder nozzle. The Euler-Lagrange method is used in the simulating computation. The results show that the new coaxial powder delivery system has stable performance, uniform powder flux, high cooling efficiency, and long useful life.     

以回转表面为基体的金属零件直接成型技术

基于快速原型制造技术、数控技术以及激光熔覆技术的原理,研究了以回转表面为基体的金属零件直接成型技术的基本理论。为实现基于回转表面的金属零件直接成型加工,在快速原型设备中引入回转轴,并推导了基于圆柱面分层的STL模型分层算法．基于所推导的分层算法,编制了用于回转表面金属零件直接成型加工的数据处理软件和加工过程控制软件,并且进行了金属零件直接成型加工实验．     

Functionally Gradient Material Laser Rapid Prototyping Technique

The functionally gradient material laser rapid prototyping system is developed based on the increasing material manufacture idea of the rapid prototyping. The system hardware is composed of a 5 kW CO2 laser, a three-dimensional numeric control table, a three-stock-bin coaxial powder delivery device, and an integration operation control desk. The system software is composed of the CAD slicing and scan filling module, materials component distributing design module, and hardware equipment integration drive module. The real time change proportion allocation technique of three metal powders, powder uniform mixing technique, and coaxial powder delivery technique are studied. According to the principle of the output powder cumulative volume invariable in unit time, the real time powder allocation formulae are deduced. The design method of the materials component distributing regularity in the part entity is studied. The gradient change regularity of the face gradient, line gradient, and point gradient is studied. A sort of the file layout of integrating material information and geometry information is brought forward.     

用于石油井下工具崩解压裂球的可溶铝基合金的性能分析

检测并分析了用于石油井下工具崩解压裂球材料的可溶铝基合金的元素构成,测试了可溶铝基合金的拉伸性能、压缩性能和硬度指标,并深入研究了可溶铝基合金的溶解性能,分析了其溶解原理。结果表明:可溶铝基合金含有1.28%Cu、0.16%Ti、0.12%Zr、0.02%B、1.90%Ga、3.19%Mg、0.02%Fe、0.22%Sn、0.35%In,其余为Al;可溶铝基合金为脆性材料,在T5状态下其抗拉强度Rm为252 MPa,伸长率为2.5%,维氏硬度为197 HV,抗压强度σ为839 MPa;可溶铝基合金在纯水中的溶解速率较慢,随着溶液温度和Na Cl含量的升高,其溶解速率不断加快。