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二通插装阀压力失调分析 被引量:2
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作者 杨国来 冀宏 傅新 《液压与气动》 北大核心 2002年第7期42-44,共3页
从二通插装阀的结构及工作原理入手 ,指出先导电磁换向阀的内泄漏是造成插装式电磁溢流阀压力失调 (压力不能调节 )的主要原因。提出了压力阀最高可控压力这一新概念 ,导出了最高可控压力与结构参数之间的数学关系式。提出了解决二通插... 从二通插装阀的结构及工作原理入手 ,指出先导电磁换向阀的内泄漏是造成插装式电磁溢流阀压力失调 (压力不能调节 )的主要原因。提出了压力阀最高可控压力这一新概念 ,导出了最高可控压力与结构参数之间的数学关系式。提出了解决二通插装阀压力失调的措施 。 展开更多
关键词 二通插装阀 压力失调分析 最高可控压力 型材机
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虚共焦非稳腔腔内失调因素分析及实验研究 被引量:3
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作者 张翔 许冰 杨伟 《红外与激光工程》 EI CSCD 北大核心 2007年第2期171-174,共4页
在腔内失调理论分析基础上,采用Hartmann-Shack波前传感器实验研究了无源正支共焦非稳腔失调后输出光束像差特性,结果表明,腔内倾斜像差对光束强度分布有显著的影响,但小的腔内倾斜扰动不会使输出光束的相位分布中的高阶像差发生变化。... 在腔内失调理论分析基础上,采用Hartmann-Shack波前传感器实验研究了无源正支共焦非稳腔失调后输出光束像差特性,结果表明,腔内倾斜像差对光束强度分布有显著的影响,但小的腔内倾斜扰动不会使输出光束的相位分布中的高阶像差发生变化。当腔镜垂轴移动偏离光轴时,可能引起某些Zernike高阶像差,如彗差和像散的增大,但首先带来的是Zernike倾斜像差,类似于引入腔内倾斜扰动时的结果。因此在做腔内像差自适应校正时,应首先考虑腔内倾斜像差的校正。该方法为腔内像差特性的研究和像差校正提供了一定参考。 展开更多
关键词 信息光学 正支共焦非稳腔 失调分析 H-S波前传感器 Zernike像差特性
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调谐滤波器的失谐分析及调谐方法 被引量:1
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作者 姚毅 贾金玲 《四川轻化工学院学报》 1999年第4期6-8,共3页
详细分析了同轴滤波器的失谐原因,提出了多腔同轴滤波器的分腔调谐法和增加补偿结构的连动调谐法。此两种调谐法能使UHF频段同轴滤波器调谐范围达800MHz以上。
关键词 滤波器 失调分析 同轴调谐 调谐方法
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Inflammation and nutrition in children with chronic kidney disease 被引量:3
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作者 Juan Tu Wai W Cheung Robert H Mak 《World Journal of Nephrology》 2016年第3期274-282,共9页
Chronic infammation and nutritional imbalance are impor-tant comorbid conditions that correlate with poor clinical outcomes in children with chronic kidney disease (CKD). Nutritional disorders such as cachexia/prote... Chronic infammation and nutritional imbalance are impor-tant comorbid conditions that correlate with poor clinical outcomes in children with chronic kidney disease (CKD). Nutritional disorders such as cachexia/protein energy wasting, obesity and growth retardation negatively impact the quality of life and disease progression in children with CKD. Inadequate nutrition has been asso-ciated with growth disturbances in children with CKD. On the other hand, over-nutrition and obesity are associated with poor outcomes in children with CKD. The exact mechanisms leading to these unfavorable conditions are not fully elucidated and are most likely multifactorial. In this review, we focus on the pathophysiology of nutrition disorders and infammation and their impact on clinical outcomes in children with CKD. 展开更多
关键词 NUTRITION INFLAMMATION Chronic kidney disease Protein energy wasting CACHEXIA OBESITY Growth failure Maternal nutrition
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Failure mode and effect analysis of the risk management of non-integral-dosage drug dispensing in PIVAS
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作者 Kuikui Geng Juan He +3 位作者 Sheng Rong Zhaohu Jia Xiangxiang Zhang Tianlu Shi 《Journal of Chinese Pharmaceutical Sciences》 CAS CSCD 2024年第7期597-608,共12页
To mitigate risks associated with the prescription examination,marking,dispensing,checking,and review of non-integral-dosage drugs in Pharmacy Intravenous Admixture Service(PIVAS),we formed a project team.Employing th... To mitigate risks associated with the prescription examination,marking,dispensing,checking,and review of non-integral-dosage drugs in Pharmacy Intravenous Admixture Service(PIVAS),we formed a project team.Employing the failure mode and effect analysis(FMEA)management method,we identified potential risks in four critical steps of the non-integral-dosage drug dispensing process within PIVAS drug management:prescription verification,mixed allocation,and verification.For each step,we assigned scores for severity,incidence,and detectability,subsequently calculating the Risk Priority Number(RPN)to prioritize identified risks.Targeted measures for improvement were developed for steps with the highest RPN values.A total of 31 risk factors were documented in the management of non-integral-dosage drugs,with the dispensing process being particularly vulnerable.Specific measures were devised for eight high RPN risks.Following a 3-month optimization and improvement period,RPN values and incidences of internal differences were significantly reduced.The implemented measures demonstrated effective risk control.Notably,we established a comprehensive conversion system for partial-dose drug dispensing,directly translating into a volume of suction fluid for dispensing personnel based on doctor orders.This eliminated the need for manual secondary calculations,thereby standardizing and automating the dispensing of non-integral-dosage drugs in PIVAS.Simultaneously,our project team conducted a dissolution test on 23 types of drugs with non-integral dosage,revealing that the solvent volume increased for 11 types after dissolution.The dosage conversion for partial dosage was recalibrated based on the volume of the final solution to ensure dosage accuracy.Through the application of failure mode and effect analysis,we systematically managed the risks associated with non-integral-dosage drugs in PIVAS.This approach addressed safety concerns in the dispensing process,reduced errors,and ensured the safe and precise administration of medication to patients. 展开更多
关键词 PIVAS FMEA The non-integral-dosage drugs Risk management DISPENSING
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