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Experimental Study on Wire Melting Control Ability of Twin-Body Plasma Arc

Chinese Journal of Mechanical Engineering 2024年第2期37卷 184-194页

作者： Ruiying Zhang fan jiang Long Xue School of Mechanical Engineering Beijing Institute of Petrochemical TechnologyBeijing 102617China Beijing Academy of Safety Engineering and Technology Beijing 102617China College of Mechanical and Energy Engineering Beijing University of TechnologyBeijing 100124China

The twin-body plasma arc has the decoupling control ability of heat transfer and mass transfer,which is beneficial to shape and property control in wire arc additive *** this paper,with the wire feeding speed as a characteristic quantity,the wire melting control ability of twin-body plasma arc was studied by adjusting the current separation ratio(under the condition of a constant total current),the wire current/main current and the position of the wire in the arc axial *** results showed that under the premise that the total current remains unchanged(100 A),as the current separation ratio increased,the middle and minimum melting amounts increased approximately synchronously under the effect of anode effect power,the first melting mass range remained constant;the maximum melting amount increased twice as fast as the middle melting amount under the effect of the wire feeding speed,and the second melting mass range was *** the wire current increased,the anode effect power and the plasma arc power were both factors causing the increase in the wire melting amount;however,when the main current increased,the plasma arc power was the only factor causing the increase in the wire melting *** average wire melting increment caused by the anode effect power was approximately 2.7 times that caused by the plasma arc *** minimum melting amount was not affected by the wire-torch distance under any current separation ratio *** the current separation ratio increased and reached a threshold,the middle melting amount remained constant with increasing wire-torch *** the current separation ratio continued to increase and reached the next threshold,the maximum melting amount remained constant with the increasing wire-torch *** effect of the wire-torch distance on the wire melting amount reduced with the increase in the current separation *** this study,the decoupling mechanism and ability of this innovative

关键词： Twin-body plasma arc Melting control ability Melting amount Current separation ratio

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Associative Tasks Computing Offloading Scheme in Internet of Medical Things with Deep Reinforcement Learning

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China Communications 2024年第4期21卷 38-52页

作者： jiang fan Qin Junwei Liu Lei Tian Hui School of Communications and Information Engineering Xi’an University of Posts and TelecommunicationsXi’an 710121China State Key Laboratory of Networking and Switching Technology Beijing University of Posts and TelecommunicationsBeijing 100876China

The Internet of Medical Things(Io MT) is regarded as a critical technology for intelligent healthcare in the foreseeable 6G era. Nevertheless, due to the limited computing power capability of edge devices and task-related coupling relationships, Io MT faces unprecedented challenges. Considering the associative connections among tasks, this paper proposes a computing offloading policy for multiple-user devices(UDs) considering device-to-device(D2D) communication and a multi-access edge computing(MEC)technique under the scenario of Io MT. Specifically,to minimize the total delay and energy consumption concerning the requirement of Io MT, we first analyze and model the detailed local execution, MEC execution, D2D execution, and associated tasks offloading exchange model. Consequently, the associated tasks’ offloading scheme of multi-UDs is formulated as a mixed-integer nonconvex optimization problem. Considering the advantages of deep reinforcement learning(DRL) in processing tasks related to coupling relationships, a Double DQN based associative tasks computing offloading(DDATO) algorithm is then proposed to obtain the optimal solution, which can make the best offloading decision under the condition that tasks of UDs are associative. Furthermore, to reduce the complexity of the DDATO algorithm, the cacheaided procedure is intentionally introduced before the data training process. This avoids redundant offloading and computing procedures concerning tasks that previously have already been cached by other UDs. In addition, we use a dynamic ε-greedy strategy in the action selection section of the algorithm, thus preventing the algorithm from falling into a locally optimal solution. Simulation results demonstrate that compared with other existing methods for associative task models concerning different structures in the Io MT network, the proposed algorithm can lower the total cost more effectively and efficiently while also providing a tradeoff between delay and energy co

关键词： associative tasks cache-aided procedure double deep Q-network Internet of Medical Things(IoMT) multi-access edge computing(MEC)

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Cisplatin-based miRNA delivery strategy inspired by the circCPNE1/miR-330-3p pathway for oral squamous cell carcinoma

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Acta Pharmaceutica Sinica B 2024年第6期14卷 2748-2760页

作者： Hua-yang fan Ming-da Zhao Hong-jie jiang Zhen-wei Yu Yu-jiang fan Xin-hua Liang Ya-ling Tang Yong Sun State Key Laboratory of Oral Diseases&National Center for Stomatology&National Clinical Research Center for Oral Diseases&Department of Oral and Maxillofacial Surgery West China Hospital of StomatologySichuan UniversityChengdu 610041China National Engineering Research Center for Biomaterials Sichuan UniversityChengdu 610065China State Key Laboratory of Oral Diseases&National Center for Stomatology&National Clinical Research Center for Oral Diseases&Department of Oral Pathology West China Hospital of StomatologySichuan UniversityChengdu 610041China

Circular RNAs(circRNAs)are ideal biomarkers of oral squamous cell carcinoma(OSCC)because of their highly stable closed-loop structure,and they can act as microRNA(miRNA)sponges to regulate OSCC *** analyzing clinical samples,we identified circCPNE1,a dysregulated circRNA in OSCC,and its expression level was negatively correlated with the clinical stage of OSCC ***-of-function assays revealed the tumor-suppressive effect of circCPNE1,which was then identified as a miR-330-3p ***-330-3p was recognized as a tumor promoter in multiple studies,consistent with our finding that it could promote the proliferation,migration,and invasion of OSCC *** results indicated that selective inhibition of miR-330-3p could be an effective strategy to inhibit OSCC ***,we designed cationic polylysine-cisplatin prodrugs to deliver antagomiR-330-3p(a miRNA inhibitory analog)via electrostatic interactions to form PP@miR nanoparticles(NPs).Paratumoral administration results revealed that PP@miR NPs effectively inhibited subcutaneous tumor progression and achieved partial tumor elimination(2/5),which confirmed the critical role of miR-330-3p in OSCC *** findings provide a new perspective for the development of OSCC treatments.

关键词： Oral squamous cell carcinoma CircRNA MiRNA sponge Antagomir MiRNA delivery Cisplatin-based nanoparticles Drug delivery systems Tumor elimination

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Childhood sleep:physical,cognitive,and behavioral consequences and implications

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World Journal of Pediatrics 2024年第2期20卷 122-132页

作者： jianghong Liu Xiaopeng Ji Susannah Pitt Guanghai Wang Elizabeth Rovit Terri Lipman fan jiang School of Nursing University of Pennsylvania418 Curie Blvd.Room 424Claire M.Fagin HallPhiladelphiaPA 19104USA College of Health Sciences University of DelawareNewarkDE 19716USA Geisinger Commonwealth School of Medicine ScrantonPA 18510USA Pediatric Translational Medicine Institute Department of Developmental and Behavioral PediatricsSchool of MedicineShanghai Jiao Tong UniversityShanghaiChina

Background Sleep problems in children have been increasingly recognized as a major public health *** research has extensively studied and presented many risk factors and potential mechanisms for children’s sleep *** this paper,we aimed to identify and summarize the consequences and implications of child sleep *** sources A comprehensive search for relevant English language full-text,peer-reviewed publications was performed focusing on pediatric sleep studies from prenatal to childhood and adolescence in a variety of indexes in PubMed,SCOPUS,and Psych Info published in the past two *** relevant data-based articles and systematic reviews are *** Many adverse consequences are associated with child sleep deficiency and other sleep problems,including physical outcomes(e.g.,obesity),neurocognitive outcomes(e.g.,memory and attention,intelligence,academic performance),and emotional and behavioral outcomes(e.g.,internalizing/externalizing behaviors,behavioral disorders).Current prevention and intervention approaches to address childhood sleep problems include nutrition,exercise,cognitive–behavioral therapy for insomnia,aromatherapy,acupressure,and *** interventions may be particularly important in the context of coronavirus disease *** research and policy strategies can target the risk factors of child sleep as well as the efficacy and accessibility of *** Given the increasing prevalence of child sleep problems,which have been shown to affect children’s physical and neurobehavioral wellbeing,understanding the multi-aspect consequences and intervention programs for childhood sleep is important to inform future research direction as well as a public health practice for sleep screening and intervention,thus improving sleep-related child development and health.

关键词： Behavior Child sleep Consequences Implications Neurocognitive Physical Prevention/intervention

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Developmental Patterns and Gender Differences of Vocal Production in Marmoset Monkeys

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Neuroscience Bulletin 2024年第1期40卷 133-138页

作者： Ruixin An Chaocheng Lu Chen Wang Liangtang Chang Junfeng Huang fan jiang Tian-Le Xu Neng Gong Center for Brain Science Shanghai Children's Medical CenterShanghai Jiao Tong University School of MedicineShanghai 200127China Department of Anatomy and Physiology Shanghai Jiao Tong University School of MedicineShanghai 200025China Department of Critical Care Medicine Huashan HospitalFudan University12 Middle Wulumuqi RoadShanghai 200040China Institute of Neuroscience Key Laboratory of Primate NeurobiologyCAS Center for Excellence in Brain Science and Intelligence TechnologyChinese Academy of SciencesShanghai 200031China Lingang Laboratory Shanghai 200031China Shanghai Center for Brain Science and Brain-Inspired Technology Shanghai 201210China

Dear Editor,The common marmoset(Callithrix jacchus),a small New World monkey species,is considered an ideal non-human primate model for studying the evolution and neural mechanism of vocal behavior due to their rich call repertoire and vocal communication[1-3].Especially,the early vocal development of marmoset monkeys has attracted much attention,because newborn marmosets have been shown to exhibit a vocal development *** two months after birth,marmosets'vocalizations undergo dramatic changes from cries to adult-like mature calls,a process that is influenced not only by inner physical maturation but also by parental care and feedback[4].

关键词： parental birth Pattern

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Development and Evaluation of a Promising Biomarker for Diagnosis of Latent and Active Tuberculosis Infection

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Infectious Diseases & Immunity 2024年第1期4卷 10-24页

作者： Cong Peng fan jiang Yinping Liu Yong Xue Peng Cheng Jie Wang Liang Wang Wenping Gong Hebei North University Zhangjiakou 075000Hebei ProvinceChina Beijing Key Laboratory of New Techniques of Tuberculosis Diagnosis and Treatment Senior Department of TuberculosisEighth Medical Center of PLA General HospitalBeijing 100091China Department of Geriatrics Eighth Medical Center of PLA General HospitalBeijing 100091China Section of Health No.94804 Unit of the Chinese People's Liberation ArmyShanghai 200434China

Background:Diagnosing latent tuberculosis(TB)infection(LTBI)and active TB(ATB)is crucial for preventing disease progression and ***,current diagnostic tests have limitations in terms of accuracy and sensitivity,making it challenging to diagnose these different infection ***,this study intends to develop a promising biomarker for LTBI and ATB diagnosis to overcome the limitations of the current diagnostic ***:We developed a novelmultiepitope-based diagnostic biomarker(MEBDB)fromLTBI region of differentiation antigens using bioinformatics and *** responses induced byMEBDM were detected using enzyme-linked immunosorbent spot and cytometric bead *** study was conducted from April 2022 to December 2022 in the SeniorDepartment of Tuberculosis at the 8thMedical Center of PLA General Hospital,*** samples were collected from participants with ATB,individuals with LTBI,and healthy controls(HCs).The diagnostic efficacy of MEBDB was evaluated using receiver operating characteristic ***:A novel MEBDB,designated as CP19128P,was ***19128P comprises 19 helper T lymphocyte epitopes,12 cytotoxic T lymphocyte epitopes,and 8 B-cell *** silico simulations demonstrated that CP19128P possesses strong affinity for Toll-like receptors and elicits robust innate and adaptive immune ***19128P generated significantly higher levels of tumor necrosis factor(TNF-α),interleukin 4(IL-4),and IL-10 in ATB patients(n=7)and LTBI(n=8)individuals compared with HCs(n=62)(P<0.001).Moreover,CP19128P-induced specific cytokines could be used to discriminate LTBI and ATB from healthy subjects with high sensitivity and *** IL-2 with IL-4 or TNF-α could differentiate LTBI from HCs(the area under the receiver operating characteristic curve[AUC],0.976[95% confidence interval[CI],0.934-1.000]or 0.986[0.956-1.000]),whereas combining IL-4 with IL-17A or TNF-α could differentiate ATB from

关键词： Tuberculosis Latent tuberculosis infection Active tuberculosis Multiepitope-based diagnostic biomarker Bioinformatics:Immunoinformatics

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Targeting the adenosine A2A receptor for neuroprotection and cognitive improvement in traumatic brain injury and Parkinson's disease

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Chinese Journal of Traumatology 2024年第3期27卷 125-133页

作者： Yan Zhao Yuan-Guo Zhou jiang-fan Chen Department of Army Occupational Disease State Key Laboratory of TraumaBurns and Combined InjuryResearch Institute of SurgeryDaping HospitalArmy Medical University.Chongqing400042China The Molecular Neuropharmacology Laboratory and the Eye-Brain Research Center The State Key Laboratory of OphthalmologyOptometry and Vision ScienceWenzhou Medical UniversityWenzhou325035Zhejiang ProvinceChina Oujiang Laboratory(Zhejiang Lab for Regenerative Medicine Vision and Brain Health)Wenzhou325035Zhejiang ProvinceChina

Adenosine exerts its dual functions of homeostasis and neuromodulation in the brain by acting at mainly 2 G-protein coupled receptors,called A1 and A2A *** adenosine A2A receptor(A2AR)antagonists have been clinically pursued for the last 2 decades,leading to final approval of the istradefylline,an A2AR antagonist,for the treatment of OFF-Parkinson's disease(PD)*** approval paves the way to develop novel therapeutic methods for A2AR antagonists to address 2 major unmet medical needs in PD and traumatic brain injury(TBI),namely neuroprotection or improving *** this review,we first consider the evidence for aberrantly increased adenosine signaling in PD and TBI and the sufficiency of the increased A2AR signaling to trigger neurotoxicity and cognitive *** further discuss the increasing preclinical data on the reversal of cognitive deficits in PD and TBI by A2AR antagonists through control of degenerative proteins and synaptotoxicity,and on protection against TBI and PD pathologies by A2AR antagonists through control of ***,we provide the supporting evidence from multiple human prospective epidemiological studies which revealed an inverse relation between the consumption of caffeine and the risk of developing PD and cognitive decline in aging population and Alzheimer's disease ***,the convergence of clinical,epidemiological and experimental evidence supports the validity of A2AR as a new therapeutic target and facilitates the design of A2AR antagonists in clinical trials for disease-modifying and cognitive benefit in PD and TBI patients.

关键词： Receptor,Adenosine A2A Adenosine A2 receptor antagonists Parkinson's disease Brain injuries,traumatic

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“双减”背景下教师工作负担与教学热情的关系研究——基于身心健康的中介作用

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湖南师范大学教育科学学报 2024年第1期23卷 112-122,F0003页

作者：蒋帆华东师范大学教育学部上海200062

基于2210位教师的截面数据调查,从教育政策执行“自下而上”成效反馈的视角出发,实证检验了“双减”改革背景下教师工作负担对教学热情的影响机制。研究表明:其一,不同性别、年龄、职称、教龄、职务、学科教师的教学热情存在显著差异,... 详细信息

基于2210位教师的截面数据调查,从教育政策执行“自下而上”成效反馈的视角出发,实证检验了“双减”改革背景下教师工作负担对教学热情的影响机制。研究表明:其一,不同性别、年龄、职称、教龄、职务、学科教师的教学热情存在显著差异,在是否担任班主任、学历、户籍地等维度上,教师教学热情无显著差异。其二,较高的工作负担会对教师教学热情产生抑制作用,但不同类型的教师工作负担对教学热情影响有所差异,行政负担显著负向影响教学热情,角色负担显著正向影响教师工作负担,而技术负担对教学热情的直接影响不显著。其三,机制检验表明,心理健康在行政负担和教学热情之间发挥着部分中介作用,身体健康在行政负担和教学热情之间不发挥中介作用,身体健康在角色负担和教学热情间发挥遮掩作用,身体健康在技术负担和教学热情间发挥遮掩作用。为促进“双减”政策深入推进,建议教育行政部门和学校积极消解教师行政负担存量,扩大多元服务供给增量;重视教师身心健康,为教师赋权增能;关注不同类型教师的教学热情差异,精准发力完善评价与激励机制。

关键词：教师健康教育政策执行教师减负教育治理结构方程模型工作绩效

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新型农村集体经济促进农民共同富裕:理论机理、实践成效与政策构想

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改革 2024年第3期 142-155页

作者：高鸣江帆农业农村部农村经济研究中心中国农业大学国家农业农村发展研究院

作为社会主义公有制经济在农村的重要实践形式,新型农村集体经济的本质与农民共同富裕的目标高度契合。新型农村集体经济主要通过增加农民收入、加强农村基础设施和基本公共服务体系建设等具体路径,助力推动农民共同富裕。面对集体经营... 详细信息

作为社会主义公有制经济在农村的重要实践形式,新型农村集体经济的本质与农民共同富裕的目标高度契合。新型农村集体经济主要通过增加农民收入、加强农村基础设施和基本公共服务体系建设等具体路径,助力推动农民共同富裕。面对集体经营性收入有待进一步提高、集体补助性收入仍然较低、地区间集体经济发展差距较大、组织运行和集体资产的监督管理亟待加强等现存问题,对标发展新型农村集体经济促进农民共同富裕的基本目标,未来应重点关注创新集体经济发展模式,促进集体资产保值增值,着力构建合理公平的利益分配机制,因地制宜发展新型农村集体经济。

关键词：新型农村集体经济共同富裕农民收入集体资产

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从儿科临床视角看脑科学研究的重大意义

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中华儿科杂志 2024年第5期62卷 393-395页

作者：董素贞江帆国家儿童医学中心上海交通大学医学院附属上海儿童医学中心放射科上海200127 国家儿童医学中心上海交通大学医学院附属上海儿童医学中心发育行为儿科上海脑科学与类脑研究中心上海200127

随着全球各国启动了脑研究计划,胚胎期至儿童期这一大脑发育关键阶段的研究逐渐成为脑科学研究的重要任务之一。本文从儿科临床视角,通过目前脑科学研究中儿童脑智发育规律、脑疾病相关研究以及脑科学研究技术在儿童中的应用3个层面,论... 详细信息

随着全球各国启动了脑研究计划,胚胎期至儿童期这一大脑发育关键阶段的研究逐渐成为脑科学研究的重要任务之一。本文从儿科临床视角,通过目前脑科学研究中儿童脑智发育规律、脑疾病相关研究以及脑科学研究技术在儿童中的应用3个层面,论述儿童脑科学研究的重要意义。

关键词：儿科临床大脑发育脑疾病脑科学研究胚胎期关键阶段发育规律儿童期

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