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Study of the influence of added water and contained water on structural vibrations and acoustic radiation using different dynamic modeling methods

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Journal of Hydrodynamics 2023年第6期35卷 1157-1167页

作者： Li-bo Qi yue yu Huai-cheng Tang ming-song Zou China Ship Scientific Research Center Wuxi214082China State Key Laboratory of Deep-sea Manned Vehicles Wuxi214082China Taihu Laboratory of Deepsea Technological Science Wuxi214082China

Using the 3-D sono-elasticity method and the simplified nonstructural mass method,the different dynamic modeling methods of the added water for a single-hull structure are first analyzed in this ***,the complete internal flow field method and the simplified nonstructural mass method of the contained water between the double hulls of a double-hull structure are ***,based on the calculation and analysis under multiple conditions,a reasonable and simplified dynamic modeling method of added water and contained water is *** is indicated that the mass of added water for a single-hull structure is closely related to the mass of total underwater displacement of the *** the increase in the analysis frequency,the mass of added water is characterized by first decreasing rapidly and then decreasing gradually and *** contained water between the double hulls is distributed to the pressure hull and the light shell based on the ratio of the impedances of the double *** results can basically reflect the acoustic radiation characteristics of the double-hull structure.

关键词： Added water contained water vibration acoustic radiation dynamic modeling methods

A review on the structure-performance relationship of the catalysts during propane dehydrogenation reaction

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Petroleum Science 2022年第2期19卷 819-838页

作者： Bohan Feng yue-Chang Wei Wei-yu song Chun-ming Xu State Key Laboratory of Heavy Oil Processing College of ScienceChina University of PetroleumBeijing102249People's Republic of China

Dehydrogenation of propane(PDH)technology is one of the most promising on-purpose technologies to solve supply-demand unbalance of *** industrial catalysts for PDH,such as Pt-and Cr-based catalysts,still have their own limitation in expensive price and security ***,a deep understanding into the structure-performance relationship of the catalysts during PDH reaction is necessary to achieve innovation in advanced high-efficient *** this review,we focused on discussion of structure-performance relationship of catalysts in *** on analysis of reaction mechanism and nature of active sites,we detailed interaction mechanism between structure of active sites and catalytic performance in metal catalysts and oxide *** relationship between coke deposition,co-feeding gas,catalytic activity and nanostructure of the catalysts are also *** these discussions on the relationship between structure and performances,we try to provide the insights into microstructure of active sites in PDH and the rational guidance for future design and development of PDH catalysts.

关键词： Dehydrogenation of propane Metal catalysts Oxide catalysts Structure-performance relationship Active site Reaction mechanism

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农村诊所临床注射过程安全评价

安徽预防医学杂志 2003年第4期9卷 238-240页

作者：宋明宇魏强夏峰张义永周名松刘明霍邱县卫生防疫站安徽霍邱237400

目的　了解农村诊所临床注射过程中产生不安全注射的因素 ,为采取干预措施提供依据。方法　采用面对面问卷调查 ,现场观察和采样相结合的方法 ,对村医及周围群众进行调查 ,注射器进行检验。结果　 93.75 %诊所不使用碘酒和酒精进行二次... 详细信息

目的　了解农村诊所临床注射过程中产生不安全注射的因素 ,为采取干预措施提供依据。方法　采用面对面问卷调查 ,现场观察和采样相结合的方法 ,对村医及周围群众进行调查 ,注射器进行检验。结果　 93.75 %诊所不使用碘酒和酒精进行二次消毒 ,90 .2 2 %诊所不能正确配制 75 %酒精 ;一次性注射器细菌培养阳性率 8.2 4%,残留血阳性率 1.42 %,玻璃注射器细菌培养阳性率 17.39%,残留血阳性率 11.96 %;35 .2 3%居民反映诊所随意丢弃一次性注射器 ,0 .45 %居民反映孩子被丢弃注射器刺伤。结论　村医文化水平较低 ,安全注射意识淡薄 ,防病知识差 ,注射器存在着严重不安全隐患 ,管理不到位是目前主要不安全因素。培训村医 ,加强一次性医疗用品监督管理和用后处理是提高安全注射水平的重要措施。

关键词：农村诊所临床注射安全评价问卷调查注射器碘酒酒精消毒

Effect of ferromanganese additions on non-metallic inclusion characteristics in TRIP steel

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Journal of Iron and Steel Research International 2022年第9期29卷 1464-1473页

作者： Wei-sheng Wang Hang-yu Zhu ming-ming song Jian-li Li Zheng-liang Xue The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan 430081HubeiChina Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education Wuhan University of Science and TechnologyWuhan 430081HubeiChina

The inclusion characteristics in extra low-carbon ferromanganese(ELC-FeMn),low-carbon ferromanganese(LC-FeMn),mid-carbon ferromanganese(MC-FeMn),and high-carbon ferromanganese(HC-FeMn)were evaluated by scanning electron microscopy coupled with energy dispersive *** effect of FeMn alloys on the cleanliness of transformation-induced plasticity(TRIP)steel was studied based on laboratory-scale experiments and thermodynamic *** results show that the main inclusions in ELC-FeMn are MnO-MnS and MnS,and the dominant inclusions in LC-FeMn and MC-FeMn are MnO,MnO-SiO_(2),and MnO-SiO_(2)-*** inclusions in HC-FeMn are *** MnO-SiO_(2)inclusion,a certain number of Al-,Si-,and Ti-containing inclusions and enrichment phases of Pb,Sn,and P are observed in *** FeMn alloy addition,the main inclusion in steel is *** alloying with the four different grades of FeMn alloy,the main inclusions in TRIP steel are Al_(2)O_(3),AIN,MnS,AlO3-AIN,AINMnS,and Al_(2)O_(3)-*** MnO and SiO_(2)inclusions from FeMn alloys are not detected in TRIP steel.

关键词： Non-metallic inclusion Ferromanganese TRIP steel.Cleanliness FeMn alloy High Al steel

3M Filtek^(TM)Z350 XT纳米树脂联合Nd:YAG激光填充楔状缺损疗效观察

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中国美容医学 2021年第12期30卷 140-142页

作者：宋明宇林江乔丽艳陈会珍首都医科大学附属北京同仁医院口腔科北京100176

目的:探讨3M Filtek^(TM)Z350 XT纳米树脂与Nd:YAG激光治疗楔状缺损的临床效果。方法:选择2018年6月-2019年3月来笔者医院口腔综合科就诊的楔状缺损患者80例,共152颗患牙,随机分为对照组和联合组。对照组40例患者,74颗患牙,直接使用3M F... 详细信息

目的:探讨3M Filtek^(TM)Z350 XT纳米树脂与Nd:YAG激光治疗楔状缺损的临床效果。方法:选择2018年6月-2019年3月来笔者医院口腔综合科就诊的楔状缺损患者80例,共152颗患牙,随机分为对照组和联合组。对照组40例患者,74颗患牙,直接使用3M Filtek^(TM)Z350 XT纳米树脂充填。联合组40例患者,78颗患牙,采用Nd:YAG激光脱敏后复合树脂充填治疗楔状缺损。观察比较两组治疗有效率。结果:对照组在术后随访分别有7颗牙和9颗牙充填体脱落。Nd:YAG激光联合树脂充填组在术后随访有1颗牙和3颗充填体脱落(P<0.05)。Nd:YAG激光联合树脂充填组在术后即刻和术后1、6、12个月的脱敏有效率分别为94.87%、91.06%、87.20%和84.46%,均显著高于对照组的81.08%、78.37%、70.27%和66.22%(P<0.05)。结论:Nd:YAG激光联合复合树脂充填治疗敏感型楔状缺损疗效良好,能明显改善牙敏感症状。

关键词： Nd:YAG激光 3M Filtek^(TM)Z350 XT纳米树脂楔状缺损治疗效果

基于数学形态学的鞋楦特征曲线骨架的提取方法

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青岛大学学报（自然科学版） 2012年第2期25卷 43-46页

作者：王广垒张维忠宋明玉杨飞张玉霞青岛大学信息工程学院山东青岛266071

利用数学形态学方法提取出特征曲线带的骨架,并将提取的特征曲线用于鞋楦模型的重建。先利用已标定相机拍摄多幅图像,将图像去噪、提取特征曲线骨架后,再重建出鞋楦的三维模型。实验结果表明,利用该方法重建的鞋楦模型达到了实际生产要... 详细信息

利用数学形态学方法提取出特征曲线带的骨架,并将提取的特征曲线用于鞋楦模型的重建。先利用已标定相机拍摄多幅图像,将图像去噪、提取特征曲线骨架后,再重建出鞋楦的三维模型。实验结果表明,利用该方法重建的鞋楦模型达到了实际生产要求,且重建所需设备比较经济。

关键词：特征曲线骨架化数学形态学三维重建鞋楦模型建模

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2023例革兰阳性菌的耐药性分析

中国药物滥用防治杂志 2010年第4期16卷 245-248页

作者：宋育明吴秀益黄宏黎邱素娟张彧梅福建医科大学附属厦门第一医院检验科厦门361022

目的:对我院分离出的革兰阳性菌的检测结果作回顾性分析,为临床合理选用抗菌药物提供依据。方法:应用VITEK2全自动微生物分析仪对菌株进行培养及药敏试验。结果:6205株分离菌中革兰阳性菌占32.6%,葡萄球菌属主要对青霉素类及红霉素耐药... 详细信息

目的:对我院分离出的革兰阳性菌的检测结果作回顾性分析,为临床合理选用抗菌药物提供依据。方法:应用VITEK2全自动微生物分析仪对菌株进行培养及药敏试验。结果:6205株分离菌中革兰阳性菌占32.6%,葡萄球菌属主要对青霉素类及红霉素耐药,链球菌属主要对四环素耐药,而肠球菌属的耐药率差异较大。结论:革兰阳性菌对抗菌药物的耐药率严重,且不同菌属甚至同一菌属不同的菌种对抗菌药物的耐药率差异都很大,临床医师宜合理选用抗菌药物进行治疗。

关键词：革兰阳性菌抗菌药物耐药率

DAO媒介:驱动未来社会算法化与自组织的元媒介

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新疆师范大学学报（哲学社会科学版） 2025年第1期46卷 132-141页

作者：喻国明苏健威北京师范大学新闻传播学院北京师范大学传播创新与未来媒体实验平台北京100875

DAO媒介是以区块链算法等技术为基础,支持数字社群协同自治的媒介,具有区块链、智能合约与投票等功能特性和要素确权、技术信任、规则构架以及场景聚合等价值禀赋。对于数字生态显露的各种问题,“算法化”是重构数字生态、降解社会系统... 详细信息

DAO媒介是以区块链算法等技术为基础,支持数字社群协同自治的媒介,具有区块链、智能合约与投票等功能特性和要素确权、技术信任、规则构架以及场景聚合等价值禀赋。对于数字生态显露的各种问题,“算法化”是重构数字生态、降解社会系统复杂性的关键机制,DAO媒介是支撑“自组织式”算法化的元媒介。DAO媒介与数字文明时代喷发的微粒个体、微资源、微价值、微需求、微场景等相匹配,能够深度匹配人的个性与自我,形成有效的趣缘连接,进而极大地释放数字文明的生产力。DAO媒介将深刻影响社会系统的构造,将微粒个体与相关社会要素“包裹”为闭环子系统,支持其准开放的系统边界、有效的异质性整合、可持续的规则重构、子系统与父级系统的持续分化和快速进化,等等。在数字文明时代,DAO媒介将使“重新部落化”的“地球村”变为现实,其驱动构筑的DAO社会将更加多元、更加富有创造力,不断拓展人类群体实践的自由度,使人类在高度异质性聚合基础上更加和谐有序地整合协同。

关键词： DAO 数字媒介算法自组织社会系统

Molecular mechanism of pancreatic ductal adenocarcinoma:The heterogeneity of cancer-associated fibroblasts and key signaling pathways

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World Journal of Clinical Oncology 2025年第2期16卷 18-28页

作者： Zhong-yuan Hu Ding Ding yu song Ya-Feng Deng Cheng-ming Zhang Tao yu First School of Clinical Medicine Shaanxi University of Chinese MedicineXianyang 712000Shaanxi ProvinceChina College of Acupuncture and Massage Shaanxi University of Chinese MedicineXianyang 712000Shaanxi ProvinceChina Graduate School Guangzhou University of Chinese MedicineGuangzhou 510000Guangdong ProvinceChina Digestive Department I Shaanxi Provincial Hospital of Traditional Chinese MedicineXi’an 710000Shaanxi ProvinceChina

Pancreatic ductal adenocarcinoma stands out as an exceptionally fatal cancer owing to the complexities associated with its treatment and diagnosis,leading to a notably low five-year survival *** study offers a detailed exploration of epidemiological trends in pancreatic cancer and key molecular drivers,such as mutations in CDKN2A,KRAS,SMAD4,and TP53,along with the influence of cancer-associated fibroblasts(CAFs)on disease *** particular,we focused on the pivotal roles of signaling pathways such as the transforming growth factor-βand Wnt/β-catenin pathways in the development of pancreatic cancer and investigated their application in emerging therapeutic *** study provides new scientific perspectives on pancreatic cancer treatment,especially in the development of precision medicine and targeted therapeutic strategies,and demonstrates the importance of signaling pathway research in the development of effective therapeutic *** studies should explore the subtypes of CAFs and their specific roles in the tumor microenvironment to devise more effective therapeutic methods.

关键词： Pancreatic cancer Fibroblasts Signaling pathways Tumor microenvironment