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Robust Machine learning Mapping of sEMG Signals to Future Actuator Commands in Biomechatronic Devices

Journal of Bionic Engineering 2024年第1期21卷 270-287页

作者： Ali Nasr Sydney bell Rachel l.Whittaker Clark R.Dickerson John McPhee Systems Design Engineering University of WaterlooWaterloo N2L 3G1Canada Kinesiology and Health Sciences University of WaterlooWaterloo N2L3G3Canada

A machine learning model for regression of interrupted Surface Electromyography(sEMG)signals to future control-oriented signals(e.g.,robot’s joint angle and assistive torque)of an active biomechatronic device for high-level myoelectric-based hierarchical control is proposed.A Recurrent Neural Network(RNN)was trained using output data,initially obtained from offline optimization of the biomechatronic(human–robot)device and shifted by the prediction *** input of the RNN consisted of interrupted sEMG signals(to mimic signal disconnections)and previous kinematic signals of the assistive *** RNN with a 0.1-s prediction horizon could predict the control-oriented joint angle and assistive torque with 92%and 86.5%regression accuracy,respectively,for the test *** proposed approach permits a fast,predictive,and direct estimation of control-oriented signals instead of an iterative process that optimizes assistive torque in the inverse dynamic simulation of a multibody human–robot *** with these interrupted input signals significantly improves the regression accuracy in the case of sEMG signal *** Robust Predictive Control-oriented Machine learning(Robust-MuscleNET)model can support volitional high-level myoelectric-based control of biomechatronic devices,such as exoskeletons,prostheses,and assistive/resistive *** work should study the application to prosthesis control as well as the repeatability of the high-level controller with electrode *** low-level hierarchical controller that manages the human–robot interaction,the assistance/resistance strategy,and the actuator coordination should also be studied.

关键词： Myoelectric-based control-Surface electromyography Machine learning Multibody system dynamics Exoskeleton Bionic

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The influence of various grease compositions and silver nanoparticle additives on electrically induced rolling-element bearing damage

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Friction 2024年第4期12卷 796-811页

作者： Samuel BOND robert l.JACKSON German MIllS Department of Chemistry and Biochemistry Auburn UniversityAuburn 36849-5412USA Department of Mechanical Engineering Auburn UniversityAuburn 36849-5412USA

leakage currents accelerate surface degradation of metal contacts via small scale arcing across lubricating films,but recent observations suggest that metallic nanoparticle additives in lubricants may be useful to improve contact *** findings prompted a study that examined electrically induced surface pitting of steel contacts in the presence of several lubricating greases including some containing nanometer-sized colloidal silver(Ag)*** rolling sphere-on-disk experiments were conducted under electro-tribological loads employing polyurea greases derived from mineral and synthetic base oils with and without *** forces and electrical resistance were monitored continuously during the tests;surface changes were characterized by means of optical spectroscopy,stylus profilometry,and scanning electron microscopy(SEM)including compositional analysis using energy dispersive spectroscopy(EDS).The observations demonstrate that surface pitting induced by arcing occurs mainly at the points were the rolling motion changes direction and that eroded metal is deposited along the wear ***-sized pits are formed which contain carbon and oxygen indicating that arcing causes decomposition of the hydrocarbon *** findings indicate a significant inhibition of pitting is induced by the Ag nanoparticles;some greases containing other additives exhibit a similar,although less pronounced,effect.

关键词： electric motor bearings wheel bearings electric vehicles arcing electrically induced bearing damage pitting leakage current stray current

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Assessment of portable FTIR and Raman spectroscopy for the detection of 2,3-dimethyl-2,3-dinitrobutane(DMDNB)in plastic explosives

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Defence Technology（防务技术） 2024年第4期34卷 11-18页

作者： Jacky Cailes robert Dunsmore Kathryn l.linge ChemCentre PO Box 1250PerthAustralia

The Marplex Convention was established to prevent the manufacture of unmarked plastic explosives and stipulates that a volatile detection agent must be added at the time of ***,to-date,laboratory testing remains the internationally accepted practice for identifying and quantifying the taggants stipulated in the *** this project,portable FTIR and Raman instruments were tested for their ability to detect 2,3-dimethyl-2,3-dinitrobutane(DMDNB),the chemical marker incorporated in plastic explosives that are manufactured within *** both FTIR and Raman instruments detected solid DMDNB(98%purity),field analysis of plastic explosives at an Australian Defence establishment showed that both FTIR and Raman spectra were matched the relevant explosive(RDX or PETN),rather than the DMDNB *** all three plastic explosives tested,the concentration of DMDNB was measured by SPME-GC-MS to be between 1.8 and 2%,greater than the minimum 1%concentration stipulated by the Marplex *** testing with a plastic explosive analogue confirmed that the minor absorption peaks that would characterize low concentrations of DMDNB were masked by absorption bands from other compounds within the ***,while both FTIR and Raman spectroscopy are suitable for detection of plastic explosives,neither rely on the presence of DMDNB for *** is likely that similar results would be found for other taggants stipulated by the Marplex Convention,given they are also present in concentrations less than 1%.

关键词： Explosive ICAO taggants 2,3-Dimethyl-2,3-dinitrobutane(DMDNB) Fourier transform infrared(FTIR) Raman

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Optimizing oncolytic virus design:a“Swiss army knife”approach to create a systemically delivered therapeutic

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Signal Transduction and Targeted Therapy 2024年第5期9卷 1791-1792页

作者： Carolina S.Ilkow John Cameron bell Ottawa Hospital Research Institute 501 Smyth RoadOttawaONK1H 8L6Canada

In a recent paper published in Nature Biotechnology,Chen et al.1 describe a multiplex oncolytic virus platform that coupled with adoptive T cell therapy could solve the problem of repeat,systemic delivery of virus based *** is widely accepted that multi-targeted therapeutic approaches attacking several facets of cancer biology are necessary to effectively deal with the tumor heterogeneity that exists within and between patients.

关键词： therapeutic al. targeted

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Choledocholithiasis: Evolving standards for diagnosis and management

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World Journal of Gastroenterology 2006年第20期12卷 3162-3167页

作者： Marilee l Freitas robert l bell Andrew J Duffy Department of Surgery Yale University School of Medicine 40 Temple StreetSuite 3 ANew HavenCT 06510United States

胆石病，导致外科的干预的最普通的医药条件之一，在美国影响成年人口的约 10 % 。胆总管石病与胆囊石头在大约病人的 10%-20% 发展，文学建议至少经历胆囊炎的病人的 3%-10% 将有胆总管(CBD ) 石头。CBD 石头可以外科手术前地， intrao... 详细信息

胆石病，导致外科的干预的最普通的医药条件之一，在美国影响成年人口的约 10 % 。胆总管石病与胆囊石头在大约病人的 10%-20% 发展，文学建议至少经历胆囊炎的病人的 3%-10% 将有胆总管(CBD ) 石头。CBD 石头可以外科手术前地， intraoperatively 或手术后地被发现多重形式为包括实验室测试，超声，计算断层摄影术扫描(CT ) ，和磁性的回声 cholangiopancreatography (MRCP ) 为胆总管石病估计病人是可得到的。Intraoperative 胆管造影术能习惯性地或有选择地在胆囊炎期间被使用诊断 CBD 石头。为 CBD 石头的最普通的干预是 ERCP。另外的通常使用的干预包括 intraoperative 胆汁管探索，任何一个 laparoscopic 或 open。经皮， transhepatic 石头移动胆汁的清理的另外的新奇技术被设计了。与这些技术灵巧的设备和有技能的专业人员的可获得性在机构之中变化。预定干预被临床的状况经常支配。

关键词：总胆管造口术诊断方法腹腔镜胆管造影

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Update on obesity surgery

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World Journal of Gastroenterology 2006年第20期12卷 3196-3203页

作者： Dan Eisenberg Andrew J Duffy robert l bell Department of Surgery Yale University School of Medicine 40 Temple St. Suite 3A New HavenCT 06510United States

在美国的肥胖的流行到达了流行比例。与超过 3000 万个美国人一起临床上肥胖，更年轻的人口也被影响了。外科的治疗应该被提供给对非外科的治疗倔强的严重地肥胖的病人，为严重肥胖在胃肠的外科上由 1991 NIH 一致会议建立了。外科当前... 详细信息

在美国的肥胖的流行到达了流行比例。与超过 3000 万个美国人一起临床上肥胖，更年轻的人口也被影响了。外科的治疗应该被提供给对非外科的治疗倔强的严重地肥胖的病人，为严重肥胖在胃肠的外科上由 1991 NIH 一致会议建立了。外科当前是为重量损失的最有效的治疗。它比任何另外的治疗形式更加有效，以重量损失的数量并且以在维持重量损失的耐久性。

关键词：肥胖手术治疗临床病理机制

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Controversies in the treatment of gastroesophageal reflux and achalasia

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World Journal of Gastroenterology 2006年第20期12卷 3155-3161页

作者： Kurt E roberts Andrew J Duffy robert l bell Department of Surgery Yale University School of Medicine 40 Temple St. Suite 3 ANew HavenCT 06510United States

胃的食道的倒流疾病(GERD ) 和弛缓不能的有效治疗为这二作为标准答案建立了最小的侵略外科的 laparoscopic 外科的巨大的成功与更低的病态和死亡调节，更短的医院停留，更快的康复，和不太手术后的疼痛。在 GERD 的处理的一争吵作为比... 详细信息

胃的食道的倒流疾病(GERD ) 和弛缓不能的有效治疗为这二作为标准答案建立了最小的侵略外科的 laparoscopic 外科的巨大的成功与更低的病态和死亡调节，更短的医院停留，更快的康复，和不太手术后的疼痛。在 GERD 的处理的一争吵作为比较喜欢的处理在 laparoscopic 反倒流外科(lARS ) 附近演变让 Barrett 的食管和过程的潜力减少食管的腺癌的风险。GERD 也与呼吸症状，气喘和喉的损害被联系了，并且第二争吵推动全部或部分的 fundoplication 是否是为 GERD 的更适当的处理的讨论。在 GERD 的处理的一种新、有希望的选择是 endoluminal 治疗。这种新处理选择的三种类型将被讨论：送到更低的食道的括约肌的射频精力，在胃的食道的连接的一个机械障碍的创造，并且更低的食道的括约肌的直接内视镜的紧缩。laparoscopic 外科为弛缓不能为 GERD 而且同样永久的痊愈作为很有效的治疗被讨论不仅。这评论为弛缓不能分析三种很重要的处理选择：药，灵魂膨胀，和外科的治疗。因为他们的短半衰期和可变吸收，在弛缓不能的处理的药同样唯一的真非侵略的选择由于穷人不象 lARS 一样有效食道的倒空。第二种处理选择，灵魂膨胀，包含拉长更低的食管并且是仍然为弛缓不能考虑了最有效的非外科的处理。最后，为弛缓不能的外科的治疗和有关这个 laparoscopic 处理的二主要争吵被讨论。第一包含肌切开术被扩大到到胃上的程度，并且第二使反倒流过程的必要性和类型担心在肌切开术以后阻止 GERD。lARS 和 laparoscopic Heller 肌切开术是同意了在之上作为为 GERD 和弛缓不能的外科疗法的标准答案分别地。在一位富有经验的 laparoscopic 外科医生的手里，两个是为有有至少 90% 耐心的满足的优秀主观、客观的长期的结果的病人的安全、有效的治疗。

关键词：胃食管反流疾病弛缓不能治疗方法胃底折叠术

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Evolution of surgical skills training

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World Journal of Gastroenterology 2006年第20期12卷 3219-3224页

作者： Kurt E roberts robert l bell Andrew J Duffy Department of Surgery Yale University School of Medicine 40 Temple StreetSuite 3ANew HavenCT 06510United Staets

外科的训练正在变化：100 年传统被法律、道德的担心为耐心的安全，工作小时限制，手术室时间的费用，和复杂并发症正在质问。训练的外科的模拟和技巧提供一个机会在在生活病人上尝试他们前在手术室环境外面教并且练习先进技巧。当使用... 详细信息

外科的训练正在变化：100 年传统被法律、道德的担心为耐心的安全，工作小时限制，手术室时间的费用，和复杂并发症正在质问。训练的外科的模拟和技巧提供一个机会在在生活病人上尝试他们前在手术室环境外面教并且练习先进技巧。当使用真实仪器和录像设备操作在一个盒子训练员模仿了“织物”，模拟训练能向前是同样直的。更先进的、虚拟现实模拟器现在为普遍使用可得到、准备好了。早系统表明了他们的有效性和歧视的能力。更新的系统启用全面课程和完整的程序的模拟的开发。医药教育是的毕业生的认证委员会(ACGME ) 要求了训练和评估的新奇方法的发展。外科的组织正在打电话让方法保证技巧的维护，并且，进展 surgical 训练信任外科医生作为技术上能干。在他们的当前的形式的模拟器被表明了改进外科的居民的手术室表演。训练课程标准化的开发仍然是一个迫切、重要的议程，特别地为最小的侵略外科。一条创新、进步的途径，从航空的域借经验，能为外科的训练的下一个世纪提供基础，保证产品的质量。当技术发展，我们练习的方法将继续演变，到医生和病人的利益。

关键词：手术治疗技术培训模拟技术课程设置

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Epidemiology of insertional and midportion Achilles tendinopathy in runners:A prospective cohort study

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Journal of Sport and Health Science 2024年第2期13卷 256-263页

作者： Wenbo Chen Kyra l.A.Cloosterman Sita M.A.Bierma-Zeinstra Marienke van Middelkoop robert-Jan de Vos Department of Orthopaedic Surgery and Sports Medicine Erasmus MC University Medical CenterRotterdam 3015GDthe Netherlands Department of General Practice Erasmus MC University Medical CenterRotterdam 3015GDthe Netherlands Department of Sports Medicine Huashan HospitalFudan UniversityShanghai 200040China

Background:Achilles tendinopathy(AT)is a common problem among *** is only limited evidence for risk factors for AT,and most studies have not defined the AT *** study has compared the incidence and risk factors between insertional AT and midportion AT,though they are considered *** study aimed to assess incidence and risk factors of AT based on data from a large prospective *** secondary aim was to explore differences in risk factors between insertional and midportion ***:Participants were recruited from among registered runners at registration for running *** were completed at baseline,1 month before the event,1 week before the event,and 1 month after the *** concerning demographics,training load,registered events,and running-related injuries were collected at *** follow-up questionnaires collected information about new injuries.A pain map was used to diagnose midportion and insertional *** primary outcome was the incidence of *** logistic regression analysis was applied to identify risk factors for the ***:We included 3379 participants with a mean follow-up of 20.4 *** incidence of AT was 4.2%.The proportion of insertional AT was 27.7%and of midportion AT was 63.8%;the remaining proportion was a combined type of insertional and midportion *** had a significantly higher incidence(5%,95%confidence interval(95%CI):4.1%-6.0%)than women(2.8%,95%CI:2.0%-3.8%).AT in the past12 months was the most predominant risk factor for new-onset AT(odds ratio(OR)=6.47,95%CI:4.27-9.81).This was similar for both subcategories of AT(insertional:OR=5.45,95%CI:2.51-11.81;midportion:OR=6.96,95%CI:4.24-11.40).Participants registering for an event with a distance of 10/10.55 km were less likely to develop a new-onset AT(OR=0.59,95%CI:0.36-0.97)or midportion AT(OR=0.47,95%CI:0.23-0.93).Higher age had a significant negative association with insertional AT(OR=0.97,95%CI:0.9

关键词： Achilles tendon injury Incidence Risk factor Running-related injury

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水基Ag-SiO纳米流体分频光伏/光热集热器功能单元性能实验研究

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新能源进展 2024年

作者：刘仙萍田东 TAYlOR robert A 湖南科技大学土木工程学院新南威尔士大学机械与制造工程学院

以纳米流体分频的光伏/光热（PV/T）集热器能使光伏和光热模块的工作温度解耦，从而获得更高的太阳能综合利用效率。以水基Ag-SiO2纳米流体为分频液和集热工质，设计新型的分频PV/T集热器结构，研究在Ag-SiO2纳米流体4种质量浓度和运行... 详细信息

以纳米流体分频的光伏/光热（PV/T）集热器能使光伏和光热模块的工作温度解耦，从而获得更高的太阳能综合利用效率。以水基Ag-SiO2纳米流体为分频液和集热工质，设计新型的分频PV/T集热器结构，研究在Ag-SiO2纳米流体4种质量浓度和运行条件下，分频PV/T集热器功能单元的热、电性能。结果表明：Ag-SiO2纳米流体的质量浓度显著影响PV/T集热器功能单元的性能，质量浓度为0.025%时，综合效率约为63.21%，比水为分频流体时的综合效率提升约38.04%；得出水基Ag-SiO2纳米流体分频时PV/T集热器功能单元的热、电效率和综合效率与不同纳米颗粒质量浓度的拟合关系式，为通过控制纳米流体质量浓度参数从而调节PV/T集热器的热、电输出提供理论依据。

关键词：太阳能纳米流体光谱分频光伏/光热系统质量浓度

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