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Calculation Method and Simulation of Air Bleeding Loss for Aircraft Start System

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Calculation Method and Simulation of Air Bleeding Loss for A...

Clinical Study of Applying Enhanced Recovery after surgery Concept in Single-Segment Lumbar Spinal Stenosis surgery

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作者： San mai su Sen Li Jun Ma School of Power and Energy Northwestern Polytechnical University

The large aircraft air starting system is driven by compressed air from auxiliary power unit（APU）, which flow to air turbine starter（ATS） through air bleed pipeline to blows the air turbine starter and turns the main engine to start. As the basis of matching calculation and control of starting system components, at the same time, providing the basis for the exits air bleed flow rate and pressure control of APU, the calculation method of pressure and temperature loss of the bleed pipeline of aircraft starting system is analyzed, and aircraft start system air bleed model is established in Flowmaster environment, and under different operating parameters,the loss of total pressure and temperature is simulated.

关键词： Aircraft air turbine starting system Air bleed pipeline Total pressure and temperature loss Flowmaster

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Open Journal of Therapy and Rehabilitation 2024年第3期12卷 263-273页

作者： Yinwen mai Weikang Yang Yuanjian Huang Wanxia Lu Guosheng su Chengkua Huang Department of Spinal surgery Baise Peoples Hospital Southwest Hospital Affiliated to Youjiang Medical University for Nationalities Baise China Graduate School Youjiang Medical University for Nationalities Baise China School of Clinical Medicine Youjiang Medical University for Nationalities Baise China Department of Laboratory Medicine Peoples Hospital of Guangxi-ASEAN Economic and Technological Development Zone (Nanning Tenth Peoples Hospital) Nanning China

Objective: With the aging population and changes in lifestyle, lumbar spinal stenosis has become a common spinal disorder. Treatment modalities have been advancing, and the application of Enhanced Recovery After surgery (ERAS) principles provides a new approach to postoperative recovery in patients. This study aims to investigate the clinical application effects of ERAS principles in single-level lumbar spinal stenosis surgery. Methods: This study included 64 patients who underwent lumbar fusion surgery in the Spinal surgery Department of Baise People’s Hospital from July 2022 to July 2024. These patients were divided into an experimental group (ERAS group, 33 cases) and a control group (conventional group, 31 cases) based on perioperative care, receiving ERAS principles and traditional treatment, respectively. A comparison was made between the two groups in terms of gender, age, BMI, intraoperative blood loss, postoperative length of hospital stay, postoperative complications, hospital costs, VAS scores (preoperative/postoperative day 3), and ODI scores (preoperative/postoperative day 3). Results: There were no significant differences in gender, age, and BMI between the ERAS group and the conventional group (gender: χ2 = 0.5008, P = 0.4792;age: 54.55 ± 8.51 years vs. 57.39 ± 8.16 years, P = 0.0892;BMI: 25.11 ± 2.70 vs. 24.77 ± 2.75, P = 0.3098). However, during surgery, patients in the ERAS group had significantly less blood loss than those in the conventional group (197.58 ± 195.51ml vs. 438.71 ± 349.22 ml, P = 0.0006), and the postoperative length of hospital stay was significantly shorter (7.00 ± 2.24 days vs. 11.55 ± 5.23 days, P = 0.0000). On postoperative day 3, VAS scores were significantly better in the ERAS group compared to the conventional group (3.70 ± 0.88 vs. 4.32 ± 0.87, P = 0.0031), and the ODI scores showed significant improvement as well (46.00 ± 3.04 vs. 48.00 ± 3.39, P = 0.0078). Although there were no significant differences in postoperative co

关键词： Enhanced Recovery after surgery Concept Single-Segment Lumbar Spinal Stenosis Perioperative Period VAS Score ODI Score

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YOLOv5框架下的飞机蒙皮铆接缺陷检测

组合机床与自动化加工技术 2023年第7期 106-109页

作者：魏英姿苏迈沈阳理工大学信息科学与工程学院沈阳110159

飞机蒙皮制孔及铆接质量的视觉辅助检测是飞机装配过程的关键环节,为提高其智能检测效率和精度,提出改进YOLOv5模型的飞机蒙皮铆接装配缺陷的检测方法。研究蒙皮制孔、铆接质量等,执行多种特征缺陷检测。为减少数据增强过程中计算损耗,... 详细信息

飞机蒙皮制孔及铆接质量的视觉辅助检测是飞机装配过程的关键环节,为提高其智能检测效率和精度,提出改进YOLOv5模型的飞机蒙皮铆接装配缺陷的检测方法。研究蒙皮制孔、铆接质量等,执行多种特征缺陷检测。为减少数据增强过程中计算损耗,避免训练过程中过拟合现象,引入随机数据增强策略作数据增广,采用强化学习方法确定随机搜索策略的超参数,可提升深度学习的数据驱动性能;更改损失函数为α-CIoU函数,并使用非极大抑制软计算方法(soft-NMS)进行预测框的筛选,以避免漏检情况,提高多种缺陷检测判别的准确性;最后将YOLOv5改进前、后算法进行对比实验。实验结果表明,在检测速度上单张图片检测时间可达到1.78 s,检测平均精度均值提升了16.4%,达到94.6%,精确率提升18.8%,达到90.7%,满足飞机批量化检测的精度要求和实时检测需求。

关键词：飞机蒙皮制孔质量铆接阶差缺陷检测数据增强 YOLOv5模型

创伤致截肢患者术前焦虑的护理干预及效果评价

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中国实用护理杂志 2012年第23期28卷 3-5页

作者：苏麦针吴立青山东省滨州市滨城区人民医院山东省滨州市滨城区256651

目的探讨护理干预对减轻创伤致肢体截除患者术前焦虑的效果。方法对30例创伤致肢体截除患者自入院至手术时由专人对患者存在的心理问题进行针对性护理干预，分别向患者告知病情，在向患者通知手术10min后及术前10min内采用焦虑自评量表... 详细信息

目的探讨护理干预对减轻创伤致肢体截除患者术前焦虑的效果。方法对30例创伤致肢体截除患者自入院至手术时由专人对患者存在的心理问题进行针对性护理干预，分别向患者告知病情，在向患者通知手术10min后及术前10min内采用焦虑自评量表（SAS）测评并比较干预前后的焦虑水平。结果经护理干预后，患者的焦虑程度较入院时减轻。结论加强护理干预能有效降低创伤致肢体截除患者术前的焦虑程度，提高治疗的主动性和依从性。

关键词：肢体截除术焦虑护理

Public Opinions on ChatGPT:An Analysis of Reddit Discussions by Using Sentiment Analysis,Topic Modeling,and SWOT Analysis

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Data Intelligence 2024年第2期6卷 344-374页

作者： Shwe Zin su Naing Piyachat Udomwong International College of Digital Innovation and Financial Technology 239 Nimmanhaemin Road SuthepMuangChiang Mai 50200Thailand

The sudden arrival of AI(Artificial Intelligence) into people's daily lives all around the world was marked by the introduction of ChatGPT, which was officially released on November 30, 2022. This AI invasion in our lives drew the attention of not only tech enthusiasts but also scholars from diverse fields, as its capacity extends across various fields. Consequently, numerous articles and journals have been discussing ChatGPT, making it a headline for several topics. However, it does not reflect most public opinion about the product. Therefore, this paper investigated the public's opinions on ChatGPT through topic modelling, Vader-based sentiment analysis and SWOT analysis. To gather data for this study, 202905 comments from the Reddit platform were collected between December 2022 and December 2023. The findings reveal that the Reddit community engaged in discussions related to ChatGPT, covering a range of topics including comparisons with traditional search engines, the impacts on software development, job market, and education industry, exploring ChatGPT's responses on entertainment and politics, the responses from Dan, the alter ego of ChatGPT, the ethical usage of user data as well as queries related to the AI-generated images. The sentiment analysis indicates that most people hold positive views towards this innovative technology across these several aspects. However, concerns also arise regarding the potential negative impacts associated with this product. The SWOT analysis of these results highlights both the strengths and pain points, market opportunities and threats associated with ChatGPT. This analysis also serves as a foundation for providing recommendations aimed at the product development and policy implementation in this paper.

关键词： ChatGPT Sentiment analysis Topic modeling SWOT analysis Public opinion Reddit

慢性心力衰竭患者血清基质金属蛋白酶9的变化及辛伐他汀干预对其的影响

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中国煤炭工业医学杂志 2008年第12期11卷 1834-1835页

作者：苏迈王宁广西南宁市红十字会医院内科 530021

MMP-9又称明胶酶B(gelatinase B),是MMP家族中分子结构最复杂者,主要功能是降解破坏细胞外基质中最主要的组成Ⅳ、Ⅴ型胶原和明胶[1].本研究采用测定慢性心力衰竭(CHF)患者血清的MMP-9水平及治疗前后血清MMP-9的变化的方法,探讨MMP-9在... 详细信息

MMP-9又称明胶酶B(gelatinase B),是MMP家族中分子结构最复杂者,主要功能是降解破坏细胞外基质中最主要的组成Ⅳ、Ⅴ型胶原和明胶[1].本研究采用测定慢性心力衰竭(CHF)患者血清的MMP-9水平及治疗前后血清MMP-9的变化的方法,探讨MMP-9在CHF发生和发展机制中的作用和意义,以及辛伐他汀在CHF治疗中的作用,报告如下.

关键词：心力衰竭基质金属蛋白酶9 辛伐他汀

Fenton试剂处理抗生素厌氧处理出水的试验研究

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水处理技术 2010年第4期36卷 79-81页

作者：沈小华买文宁苏涛郑州大学水利与环境学院河南郑州450002

采用Fenton试剂处理经厌氧处理后的抗生素废水,通过正交试验确定其主要影响因素的最佳水平组合为:FeSO·47H2O投加量为3mmol(200mL厌氧出水中),进水pH为3.0,[H2O2]:[Fe2+]为12:1,反应时间为2h。在正交试验基础上,通过单因子分析确定了... 详细信息

采用Fenton试剂处理经厌氧处理后的抗生素废水,通过正交试验确定其主要影响因素的最佳水平组合为:FeSO·47H2O投加量为3mmol(200mL厌氧出水中),进水pH为3.0,[H2O2]:[Fe2+]为12:1,反应时间为2h。在正交试验基础上,通过单因子分析确定了系统的最佳运行条件。在FeSO·47H2O投加量为3mmo(l200mL厌氧出水中)、进水pH为3.0、[H2O2]:[Fe2+]为8:1、反应时间为2h的条件下,对COD的去除率可以达到72%,处理出水BOD5/COD为0.45。

关键词： Fenton试剂抗生素正交试验