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Erosion and deuterium retention behavior of tungsten exposed to impurity-seeded deuterium plasma

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Tungsten 2021年第4期3卷 448-458页

作者： Hong zhang han-wen zhang Li Qiao Xue-Xi zhang Ran He Peng Wang State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China School of Nuclear Science and Technology Lanzhou UniversityLanzhou 730000China

The effect of plasma impurity seeding on erosion and deuterium(D)retention behavior of tungsten(W)is investigated on linear experimental plasma system(LEPS).The incident D energy is 38 and 71 eV per D,and the D fluence varies from 3×10^(23)to 1×10^(26)D·m^(-2).The results of erosion reveal that argon(Ar)seeding strongly enhances erosion,helium(He)seed-ing slightly increases sputtering yield depending on the ratio of He in plasma,while nitrogen(N)seeding inhibits erosion and reduces the sputtering ***,O impurity dominates the erosion behavior during pure D plasma exposure when the D incident energy is lower than the sputtering threshold of W by *** blistering and D retention behavior,compared with pure D exposure,Ar seeding reduces the amount and increases the size of blister,and leads to the increase of D *** seeding has the opposite result,showing almost no blisters at sample surface and a dramatic drop in D retention.D retention decreases with increasing N content,and ruptured blisters are observed at a high D fluence of 1×10^(26)D·m^(-2).

关键词： Tungsten Erosion Deuterium retention Impurity seeding

Evaluation of the GATIS score for predicting prognosis in rectal neuroendocrine neoplasms

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World Journal of Gastroenterology 2024年第42期30卷 4587-4590页

作者： Yu-Ning Feng Li-Hong Liu han-wen zhang Department of Radiology The First Affiliated Hospital of Shenzhen UniversityHealth Science CenterShenzhen Second People’s HospitalShenzhen 518000Guangdong ProvinceChina

The GATIS score,developed by Zeng et al,represents a significant advancement in predicting the prognosis of patients with rectal neuroendocrine neoplasms(RNENs).This study,which included 1408 patients from 17 major medical centres in China over 12 years,introduces a novel prognostic model based on the tumour grade,T stage,tumour size,age,and the prognostic nutritional *** with traditional methods such as the World Health Organization classification and TNM staging systems,the GATIS score has superior predictive power for overall survival and progression-free *** a C-index of 0.915 in the training set and 0.812 in the external validation set,the GATIS score’s robustness and reliability are *** study’s use of a large,multi-centre cohort and rigorous validation processes underscore its *** GATIS score offers clinicians a powerful tool to accurately predict patient outcomes,guide treatment decisions,and improve follow-up *** development represents a crucial step forwards in the management of R-NENs,addressing the complexity and variability of these tumours and setting a new benchmark for future research and clinical practice.

关键词： GATIS score Rectal neuroendocrine neoplasms Prognostic model Overall survival Multicentre study

Output Tracking for One-Dimensional Heat Equation subject to Boundary Control matched Disturbance 36

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Output Tracking for One-Dimensional Heat Equation subject to...

Morphological changes in Parkinson's disease based on magnetic resonance imaging:A mini-review of subcortical structures segmentation and shape analysis

第36届中国控制会议

作者： han-wen zhang Ling-Ling zhang Jun-Jun Liu Department of Mathematics Taiyuan University of Technology

ISBN: (纸本)9781538629185

In this paper, we are concerned with the performance output reference signal tracking for a heat equation with matched boundary disturbance. Firstly, we construct a state reference trajectory system based on the reference signal, and prove this observer system is bounded. Secondly, we design a performance output tracking controller, which can make the performance output is tracking the reference signal and cancel the external disturbance. In addition, the controller can also ensure all the internal-loops are bounded. Finally, the reference state is tracked by the state of the system, and it has been proved by Lyapunov functional method.

关键词： Heat Equation Disturbance Rejection Performance Output Tracking

来源： cnki会议评论

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World Journal of Psychiatry 2022年第12期12卷 1356-1366页

作者： Jin-Huan Deng han-wen zhang Xiao-Lei Liu Hua-Zhen Deng Fan Lin Department of Radiology The First Affiliated Hospital of Shenzhen UniversityHealth Science CenterShenzhen Second People’s HospitalShenzhen 518035Guangdong ProvinceChina

Parkinson's disease(PD)is a neurodegenerative disorder caused by the loss of dopaminergic neurons in the substantia nigra,resulting in clinical symptoms,including bradykinesia,resting tremor,rigidity,and postural *** pathophysiological changes in PD are inextricably linked to the subcortical *** analysis is a method for quantifying the volume or surface morphology of structures using magnetic resonance *** this review,we discuss the recent advances in morphological analysis techniques for studying the subcortical structures in PD in *** approach includes available pipelines for volume and shape analysis,focusing on the morphological features of volume and surface area.

关键词： Parkinson's disease Dopaminergic neurons Magnetic resonance imaging Substantia nigra Morphological

Prevalence and risk factors of stroke in China:a national serial cross-sectional study from 2003 to 2018

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Stroke & Vascular Neurology 2023年第3期8卷 238-248,I0086-I0095页

作者： Dai-Shi Tian Chen-Chen Liu Chao-Long Wang Chuan Qin Ming-Huan Wang wen-Hua Liu Jian Liu han-wen zhang Rong-Guo zhang Shao-Kang Wang Xiao-Xiang zhang Liang Wang Deng-Ji Pan Jian-Ping Hu Xiang Luo Sha-Bei Xu Wei Wang Department of Neurology Tongji Hospital of Tongji Medical College of Huazhong University of Science and TechnologyWuhanHubeiChina Department of Epidemiology and Biostatistics Tongji Medical College of Huazhong University of Science and TechnologyWuhanHubeiChina Department of Scientific Research Management Tongji Hospital of Tongji Medical College of Huazhong University of Science and TechnologyWuhanHubeiChina Infervision Medical Technology Co. LtdBeijingChina Department of Computer Center Tongji Hospital of Tongji Medical College of Huazhong University of Science and TechnologyWuhanHubeiChina Centre for Health Statistics Information National Health Commission of the People's Republic of ChinaBeijingChina

Stroke imposes a substantial burden *** the rapid economic and lifestyle transition in China,trends of the prevalence of stroke across different geographic regions in China remain largely *** on the data in the National Health Services Surveys(NHSS),we assessed the prevalence and risk factors of stroke in China from 2003 to *** this study,data from 2003,2008,2013,and 2018 NHSS were *** cases were based on participants’self-report of a previous diagnosis by *** estimated the trends of stroke prevalence for the overall population and subgroups by age,sex,and socioeconomic factors,then compared across different geographic *** applied multivariable logistic regression to assess associations between stroke and risk *** number of participants aged 15 years or older were 154,077,146,231,230,067,and 212,318 in 2003,2008,2013,and 2018,respectively,among whom,1435,1996,3781,and 6069 were stroke *** age and sex standardized prevalence per 100,000 individuals was 879 in 2003,1100 in 2008,1098 in 2013,and 1613 in *** per 100,000 individuals in rural areas increased from 669 in 2003 to 1898 in 2018,while urban areas had a stable trend from 1261 in 2003 to 1365 in *** geographic regions,the central region consistently had the highest prevalence,but the western region has an alarmingly increasing trend from 623/100,000 in 2003 to 1898/100,000 in 2018(Ptrend<0.001),surpassing the eastern region in *** age,male sex,rural area,central region,hypertension,diabetes,depression,low education and income level,retirement or unemployment,excessive physical activity,and unimproved sanitation facilities were significantly associated with *** conclusion,the increasing prevalence of stroke in China was primarily driven by economically underdeveloped *** is important to develop targeted prevention programs in underdeveloped *** traditional risk factors,more attenti

关键词： prevention sectional income

Efficient plasmon-enhanced perovskite solar cells by molecularly isolated gold nanorods

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Journal of Energy Chemistry 2022年第10期31卷 60-67,I0003页

作者： Yong Hui En-Ming You Qing-Peng Luo Tan Wang Zi-Ang Nan Yu Gu wen-han zhang Zhuan-Yun Cai Liang Chen Jian-zhang Zhou Jia-Wei Yan Zhao-Xiong Xie Bing-Wei Mao Zhong-Qun Tian State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry College of Chemistry and Chemical EngineeringInnovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM)Xiamen UniversityXiamen 361005FujianChina School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai 200241China

Perovskite solar cells(PSCs)are becoming a promising candidate for next-generation photovoltaic cells due to their attractive power conversion efficiency(PCE).Plasmonic enhancement is regarded as an optical tuning approach for further improving the PCE of single-junction PSCs toward Shockley-Queisser ***,we introduce molecularly isolated gold nanorods(Au NRs),bearing relatively stronger scattering ability and localized surface plasmonic resonance(LSPR)effect,in the rear side of perovskites in PSCs,for promoting light harvesting and for electrical *** to the larger refractive index and better matched energy level alignment,the 4-mercaptobenzoic acid molecules coated on Au NRs prove to play important dual roles:isolating the metallic Au NRs from contacting with perovskite,and facilitating more efficient charge separation and transport across the interface under the synergetic LSPR effect of Au *** work highlights the capability of the plasmonic approach by nanorods and by molecular isolation,extending nanoparticle-based plasmonic approaches,toward highly efficient plasmon-enhanced PSCs.

关键词： Perovskite solar cells Plasmon-enhanced Gold nanorods Molecular isolation Scattering

Investigating the relationship between intracranial atherosclerotic plaque remodelling and diabetes using high-resolution vessel wall imaging

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World Journal of Diabetes 2024年第1期15卷 72-80页

作者： Yong-Qian Mo Hai-Yu Luo han-wen zhang Yu-Feng Liu Kan Deng Xiao-Lei Liu Biao Huang Fan Lin Department of Radiology Peking University Shenzhen HospitalShenzhen 518000Guangdong ProvinceChina Department of Ultrasound Peking University Shenzhen HospitalShenzhen 518000Guangdong ProvinceChina The Second School of Clinical Medicine Southern Medical UniversityGuangzhou 510282Guangdong ProvinceChina Department of Radiology The First Affiliated Hospital of Shenzhen UniversityHealth Science CenterShenzhen Second People’s HospitalShenzhen 518036Guangdong ProvinceChina Research Department Philips HealthcareGuangzhou 518000Guangdong ProvinceChina Department of Radiology Guangdong Provincial People’s HospitalGuangdong Academy of Medical SciencesGuangzhou 510000Guangdong ProvinceChina

BACKGROUND Intracranial atherosclerosis,a leading cause of stroke,involves arterial plaque *** study explores the link between plaque remodelling patterns and diabetes using high-resolution vessel wall imaging(HR-VWI).AIM To investigate the factors of intracranial atherosclerotic remodelling patterns and the relationship between intracranial atherosclerotic remodelling and diabetes mellitus using *** Ninety-four patients diagnosed with middle cerebral artery or basilar artery INTRODUCTION Intracranial atherosclerotic disease is one of the main causes of ischaemic stroke in the world,accounting for approx-imately 10%of transient ischaemic attacks and 30%-50%of ischaemic strokes[1].It is the most common factor among Asian people[2].The adaptive changes in the structure and function of blood vessels that can adapt to changes in the internal and external environment are called vascular remodelling,which is a common and important pathological mechanism in atherosclerotic diseases,and the remodelling mode of atherosclerotic plaques is closely related to the occurrence of *** remodelling(PR)is an outwards compensatory remodelling where the arterial wall grows outwards in an attempt to maintain a constant lumen *** a long time,it was believed that the degree of stenosis can accurately reflect the risk of ischaemic stroke[3-5].Previous studies have revealed that lesions without significant luminal stenosis can also lead to acute events[6,7],as summarized in a recent meta-analysis study in which approximately 50%of acute/subacute ischaemic events were due to this type of lesion[6].Research[8,9]has pointed out that the PR of plaques is more dangerous and more likely to cause acute ischaemic *** studies[10-13]have found that there are specific vascular remodelling phenomena in the coronary and carotid arteries of diabetic ***,due to the deep location and small lumen of intracranial arteries and limitations of i

关键词： High-resolution vessel wall imaging Intracranial atherosclerosis Vascular remodelling Magnetic resonance imaging

Phenylalanine Hydroxylase Deficiency and Citrin Deficiency in a Chinese Infant

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Chinese Medical Journal 2015年第21期128卷 2979-2980页

作者： Jun Ye wen-Juan Qiu Lian-Shu han Hui-wen zhang Xue-Fan Gu Department of Pediatric Endocrinology/Genetics Shanghai Institute for Pediatric Research Xin Hua Hospital Shanghai Jiao Tong University School of Medicine Shanghai 200092 China

To the Editor： Tandem mass spectrometry （MS/MS）-based expanded newborn screening was first introduced in Pediatric Endocrinology/ Genetics of Xin Hua Hospital in 2003. The screening is expected to detect genetic disorders leading to a secondary increase in blood phenylalanine （Phe） in newborns. We reported a rare case in a Chinese infant with hyperphenylalaninemia （HPA） caused by phenylalanine hydroxylase （PAH） deficiency and neonatal intrahepatic cholestasis caused by citrin deficiency （NICCD）. This constellation of two different metabolic pathway defects in one patient has not been reported previously.

关键词： p-氨基马尿酸苯丙氨酸羟化酶串联质谱法胆汁淤积肝内内分泌学普查下丘脑-垂体系统亚洲大陆世系人群人类婴儿婴儿新生

Overview of Camera Calibration

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科技信息 2013年第7期 293-295页

作者： YANG Fei zhang Wei-zhong han wen-xi zhang Feng College of Information Engineering Qingdao University Qingdao Shandong 266071

This paper introduce several commonly used camera calibration method include their advantages and *** traditional methods of camera calibration need to know precise structural information of calibration object and they are *** calibration based on active vision get the camera calibration through the controlling of some parameters of ***-calibration of camera don't need to use the calibration block and get the camera calibration through the corresponding relationship among multiple images.

关键词：英语学习学习方法阅读知识阅读材料