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Journal of Wuhan University of Technology(Materials Science) 2024年第4期39卷 962-967页

作者：刘志刚 TANG Zezheng 杨立荣 WANG Chunmei XIE Yuantao liu yisen College of Materials Science and Engineering North China University of Science and TechnologyTangshan 063210China

The retarding effect of protein retarder on phosphorus building gypsum(PBG)and desulfurization building gypsum(DBG)was investigated,and the results show that protein retarder for DBG can effectively prolong the setting time and displays a better retarding effect,but for PBG shows a poor retarding ***,the deterioration reason of the retarding effect of protein retarder on PBG was investigated by measuring the pH value and the retarder concentration of the liquid phase from vacuum filtration of PBG slurry at different hydration time,and the measure to improve the retarding effect of protein retarding on PBG was *** pH value of PBG slurry(<5.0)is lower than that of DBG slurry(7.8-8.5).After hydration for 5 min,the concentration of retarder in liquid phase of DBG slurry gradually decreases,but in liquid phase of PBG slurry continually increases,which results in the worse retarding effect of protein retarder on *** liquid phase pH value of PBG slurry can be adjusted higher by sodium silicate,which is beneficial to improvement in the retarding effect of the *** adding 1.0%of sodium silicate,the initial setting time of PBG was efficiently prolonged from 17 to 210 min,but little effect on the absolute dry flexural strength was observed.

关键词： protein retarder phosphorus building gypsum deterioration reason improvement measure

Industrialization progress and challenges of cultivated meat

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Journal of Future Foods 2024年第2期4卷 119-127页

作者： Jiaqi Cai Shouwei Wang Yingying Li Shengyan Dong Jun Liang yisen liu Shilei Li China Meat Research Center Beijing 100068China Beijing Academy of Food Sciences Beijing 100068China College of Light Industry Science and Engineering Tianjin University of Science&TechnologyTianjin 300457China

With its more sustainable production mode and higher healthy food supplying,cultivated meat is gradually regarded as the promising alternative meat food in future by human *** of the countries in the planet had participated in the cut-throat competition for sustainable protein searching,especially for the regions with low food self-sufficiency *** this paper,by reviewing the commercial market participation,product development stage,and technical research progress related to cultivated meat in detail,we demonstrated the industrialization progress of cultivated meat and explored the challenges of cultivated meat in the near future.1)Seeded cell and serum free medium were the basic raw materials,which were directly related to the food safety regulation,production cost control and productivity improvement;2)Bioreactor and regulation were the cornerstone of industrialization,which were closely related to the capacity expansion,product marketing;3)Technological improvements in taste,texture,safety,scale,cost were the foundation of realizing product iterative upgrade and market acceptance.

关键词： Cultivated meat Industrialization Progress Challenge

舌骨会厌联合胸锁乳突肌锁骨瓣修复喉外伤感染后喉缺损1例

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临床耳鼻咽喉头颈外科杂志 2024年第7期38卷 671-672页

作者：刘义森吴开乐洪俊束维龙许星星庞仕秀合肥市第三人民医院(安徽医科大学合肥第三临床学院) 合肥230022 安徽医科大学第一附属医院

开放性喉外伤的初始救治需争分夺秒,以抢救生命为主,但后期可能会因各种因素导致喉结构及功能的改变,需要特别重视。本文报道1例抑郁症患者喉外伤的救治过程,因为后期伴有喉感染引起喉缺损行舌骨会厌联合胸锁乳突肌锁骨瓣修复,并行个体... 详细信息

开放性喉外伤的初始救治需争分夺秒,以抢救生命为主,但后期可能会因各种因素导致喉结构及功能的改变,需要特别重视。本文报道1例抑郁症患者喉外伤的救治过程,因为后期伴有喉感染引起喉缺损行舌骨会厌联合胸锁乳突肌锁骨瓣修复,并行个体化的功能锻炼,最后痊愈。

关键词：感染喉缺损临近组织瓣修复

中耳炎患者人工耳蜗植入术后双模式的效果分析

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中华耳科学杂志 2023年第1期21卷 47-51页

作者：庞仕秀刘义森童步升安徽医科大学合肥第三临床学院(合肥市第三人民医院) 合肥230022 安徽医科大学第一附属医院合肥230022

目的探讨患有慢性化脓性中耳炎或既往中耳炎术后残留乳突开放腔的双侧重度感音神经性聋患者行人工耳蜗植入术(cochlear implantation,CI)的安全性和有效性、保留非手术耳的助听功能,双模式助听优势。方法对4例慢性化脓性中耳炎伴鼓膜... 详细信息

目的探讨患有慢性化脓性中耳炎或既往中耳炎术后残留乳突开放腔的双侧重度感音神经性聋患者行人工耳蜗植入术(cochlear implantation,CI)的安全性和有效性、保留非手术耳的助听功能,双模式助听优势。方法对4例慢性化脓性中耳炎伴鼓膜穿孔的患者同期行CI+鼓膜修补术,4例既往行中耳乳突根治术、具有乳突开放腔且长期不干耳或中耳胆脂瘤复发的患者同期行CI+脂肪填塞术腔+外耳道及咽鼓管封闭术,8例患者对侧耳均继续佩戴助听器(Hearing-aid,HA),观察切口愈合、术后并发症等情况。在术后开机6月时,测试患者单纯CI状态下的听阈(T)和言语识别率(Word recognition score,WRS),同术前进行比较,同时比较单纯CI与CI-HA双模式下的WRS值。结果 1例患者术后切口感染,经加强换药10天后愈合。其余7例术区无感染、脑膜炎、迷路炎等并发症,手术安全,整个随访过程中未见中耳炎复发、电极脱落等异常;术后T明显降低、WRS明显增高,CI-HA状态下的WRS(双音节词和短句)高于单纯CI状态下的WRS,差异具有统计学意义(P<0.05)。结论慢性化脓性中耳炎或既往中耳炎术后残留乳突开放腔的患者同期行人工耳蜗植入术联合鼓膜修补(或脂肪填塞术腔、外耳道及咽鼓管封闭),手术安全、术后听觉言语效果明显改善;该类患者双模式人工耳蜗植入术后听觉言语效果优于非双模式,可发挥双模式优势。

关键词：慢性中耳炎双模式人工耳蜗植入术

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基于多分支空洞卷积网络的光谱定量分析

激光与光电子学进展 2023年第9期60卷 430-438页

作者：陈国喜刘忆森周松斌赵路路昆明理工大学信息工程与自动化学院云南昆明650500 广东省科学院智能制造研究所广东广州510070

卷积神经网络(CNN)近年来已经广泛应用在各种化学计量学任务中。然而,通过CNN从光谱中学习长程相关性仍然是一个挑战,为了避免过拟合,很多之前的工作中使用的CNN架构都很浅。本文提出了一种并行空洞卷积网络(ACPnet)的方法来学习定量光... 详细信息

卷积神经网络(CNN)近年来已经广泛应用在各种化学计量学任务中。然而,通过CNN从光谱中学习长程相关性仍然是一个挑战,为了避免过拟合,很多之前的工作中使用的CNN架构都很浅。本文提出了一种并行空洞卷积网络(ACPnet)的方法来学习定量光谱的长程相关性,该方法将具有不同空洞率的并行卷积分支组合在一起,以寻找近程和长程相关性的最佳平衡。并在片剂(拉曼光谱)、土壤(近红外光谱)和葡萄酒(核磁共振光谱)3个数据集上验证了该方法的通用性。结果表明,与偏最小二乘回归(PLS)、最小二乘支持向量机(LS-SVM)、常规CNN和级联模式空洞卷积网络(ACCnet)相比,ACPnet在3个数据集的回归精度都达到了最佳。此外,将ACPnet提取的特征输入到不同的回归器中进行分析,来评估该结构作为有监督特征提取器的性能。特征提取-回归模型的预测结果表明,ACPnet在3个数据集上提取的特征信息都要优于常规CNN。

关键词：光谱学空洞卷积神经网络定量光谱分析短程和长程相关性

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基于自监督特征提取的机械异常声音检测

激光与光电子学进展 2022年第12期59卷 351-361页

作者：薛英杰陈颀周松斌刘忆森韩威昆明理工大学信息工程与自动化学院云南昆明650500 广东省科学院智能制造研究所广东省现代控制技术重点实验室广东广州510070

基于声音诊断的机械设备异常状态检测在工业自动化领域具有重要意义。当前,无监督机械设备异常声音检测主要基于人工构造算法提取声音信号特征,再以此特征进一步进行异常检测,人工提取方法存在人为因素影响较大、通用性不强等问题。针... 详细信息

基于声音诊断的机械设备异常状态检测在工业自动化领域具有重要意义。当前,无监督机械设备异常声音检测主要基于人工构造算法提取声音信号特征,再以此特征进一步进行异常检测,人工提取方法存在人为因素影响较大、通用性不强等问题。针对这些问题,提出一种自监督特征提取新方法,并将提取的特征输入自编码器(AE)进行机械设备异常声音检测。该方法首先将声音样本转换为时频谱图,采用设备正常声音的时频谱图作为训练样本,然后使用正常时频谱图和人为构造异常时频谱图构建自监督特征提取器(SSFE),以SSFE提取的正常样本特征训练AE,实现无监督机械设备异常声音识别。使用MIMII公开数据集进行实验,结果表明所提方法能够自适应提取滑轨、阀门、水泵和风扇等4种机械设备的声音特征,最终获得的平均曲线下面积(AUC)检测结果为88.5%,相较于线性声谱图、对数梅尔谱、梅尔频率倒谱系数等人工特征提取方法的结果有显著提升。

关键词：机器视觉自监督学习无监督学习自编码器异常检测

Frequency Regulation of VSC-MTDC System with Offshore Wind Farms

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Journal of Modern Power Systems and Clean Energy 2024年第1期12卷 275-286页

作者： Haoyu liu Chongru liu North China Electric Power University Beijing 102206China

Frequency regulation of voltage source converter-based multi-terminal high-voltage direct current(VSC-MTDC)system with offshore wind farms enhances the frequency stability by compensating the power for a disturbed AC ***,it is difficult to reasonably allocate frequency-regulation resources due to a lack of coordination mechanisms between wind farms and the MTDC ***,it is difficult for the frequency control of the wind farms to manage changes in wind speed;and the risk of wind-turbine stalls is ***,based on the kinetic energy of wind turbines and the power margin of the converters,the frequency-regulation capability of wind turbines is evaluated,and a dynamic frequency-support scheme considering the real-time frequency-support capability of the wind turbines and system frequency evolution is proposed to improve the frequency-support performance.A power adaptation technique at variable wind speeds is developed;the active power in the frequency-support stage and restoration stage is switched according to the wind speed.A hierarchical zoning frequency-regulation scheme is designed to use the frequency-regulation resources of different links in the MTDC system with wind *** simulation results show that the novel frequency-regulation strategy maintains frequency stability with wind-speed changes and avoids multiple frequency dips.

关键词： Wind generation voltage source converter-based multi-terminal high-voltage direct current(VSC-MTDC) frequency regulation cooperative control adaptive control variable wind speed

A Novel Design of a Pre-separation Panel Structure to Protect Against the Impact of an Explosion in an Aircraft Plenum Chamber

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Acta Mechanica Solida Sinica 2024年第1期37卷 166-180页

作者： Zongxing liu Xiang Yang Jun liu School of Aeronautics Northwestern Polytechnical UniversityXi'an 710072China COMAC Shanghai Aircraft Design and Research Institute Shanghai 201210China

To reduce the damage of the pressurizing panel structure of a fuselage caused by an explosion at the“least risk bomb location”in an aircraft structure,a new pre-separation panel structure was designed to resist blast ***,the dynamic strain response and morphology of impact damage of the new pre-separation panel were measured in an impact damage ***,the commercial software LS-DYNA was used to calculate the propagation of the blast shock wave,and the results were compared with empirical equations to verify the rationality of the numerical calculation ***,the fluid–structure coupling method was used to calculate the damage process of the pre-separation panel structure under the impact of an explosion wave and an impact *** calculated results were in good agreement with the test results,which showed the rationality of the calculation method and the *** residual strength of the damaged pre-separation panel was significantly higher than that of the original damaged *** results show that the new pre-separation panel structure is reasonable and has certain significance for guiding the design of plenum chambers with strong resistance to implosion for aircraft fuselages.

关键词： Pre-separation panel structure Explosive response Residual strength Aircraft plenum chamber Least risk bomb location

Effectiveness and safety of acupuncture in treatment of pregnancyrelated symptoms:a systematic review and Meta-analysis

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Journal of Traditional Chinese Medicine 2024年第1期44卷 16-26页

作者： liu Tingting liu Tongou liu Mingfu School of Traditional Chinese Medicine Clinical Medicine Hubei University of Traditional Chinese MedicineWuhan 430000China First Clinical College of Hubei University of Traditional Chinese Medicine Wuhan 430000China Department of Acupuncture and Tuina Affiliated Hospital of Hubei University of Traditional Chinese MedicineHubei Provincial Hospital of Traditional Chinese MedicineWuhan 430000China

OBJECTIVE:To systematically evaluate the efficacy and safety of acupuncture(AM)in the treatment of pregnancyrelated symptoms such as acute vomiting during ***:We comprehensively searched the available literature up to November 2021,including Pub Med,Embase,Cochrane Library,Chinese Biomedical Literature Database,and China National Knowledge Infrastructure Database,for randomized controlled trials(RCTs)on AM for the treatment of severe vomiting,insomnia,pharyngeal and pelvic pain,mood abnormalities,and dyspepsia during ***:Sixteen RCTs with a cumulative sample size of 1178 cases were *** these,964 patients were included in the *** Meta-analysis results showed that AM was more efficient than Western medicine in treating discomfort during pregnancy[odds ratio(OR)=1.19,95%confidence interval(CI)(1.11,1.28),P<0.01].AM was better than the control group in improving the visual analog scale scores[standard mean difference(SMD)=0.62,95%CI(0.53,0.71),P<0.01].AM was superior to the control group in improving Numerical Rating Scale(NRS)symptom scores[OR=7.31,95%CI(3.36,15.94),P<0.01].There was no significant difference in adverse effects between the AM and sham-AM groups and the analgesic drug group[OR=0.70,95%CI(0.39,1.28),P=0.25],but the treatment and control groups had mild adverse effects with a low ***:AM is more effective than other treatments or pharmacotherapy alone in the treatment of pregnancy-related symptoms,and is relatively ***,the quality of the included trials was rather poor,and high-quality studies are required to confirm our findings.

关键词： acupuncture pregnancy nausea vomiting sleep initiation and maintenance disorders low back pain pelvic pain mood abnormalities Meta-analysis systematic review

Stochastic Unit Commitment with High-Penetration Offshore Wind Power Generation in Typhoon Scenarios

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Journal of Modern Power Systems and Clean Energy 2024年第2期12卷 535-546页

作者： Yanqi liu Dundun liu Hongcai Zhang State Key Laboratory of Internet of Things for Smart City and Department of Electrical and Computer Engineering University of MacaoMacao 999078China University of Macao Zhuhai UM Science and Technology Research Institute ZhuhaiChina

To tackle the energy crisis and climate change,wind farms are being heavily invested in across the *** China's coastal areas,there are abundant wind resources and numerous offshore wind farms are being *** secure operation of these wind farms may suffer from typhoons,and researchers have studied power system operation and resilience enhancement in typhoon ***,the intricate movement of a typhoon makes it challenging to evaluate its spatial-temporal *** published papers only consider predefined typhoon trajectories neglecting *** address this challenge,this study proposes a stochastic unit commitment model that incorporates high-penetration offshore wind power generation in typhoon *** adopts a data-driven method to describe the uncertainties of typhoon trajectories and considers the realistic anti-typhoon mode in offshore wind farms.A two-stage stochastic unit commitment model is designed to enhance power system resilience in typhoon *** formulate the model into a mixed-integer linear programming problem and then solve it based on the computationally-efficient progressive hedging algorithm(PHA).Finally,numerical experiments validate the effectiveness of the proposed method.

关键词： Unit commitment two-stage stochastic programming offshore wind farm typhoon