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Effect of vanadium on hydrogen embrittlement susceptibility of high-strength hot-stamped steel

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Journal of Iron and Steel Research International 2021年第2期28卷 211-222页

作者： Wei-jian Chen Peng-fei Gao Shuai Wang hong-zhou lu Zheng-zhi Zhao Collaborative Innovation Center of Steel Technology University of Science and Technology BeijingBeijing 100083China Beijing Laboratory for Modern Transportation Advanced Metal Materials and Processing Technology University of Science and Technology BeijingBeijing 100083China CITIC Metal Co. Ltd.Beijing 100004China

Based on the chemical composition of traditional hot-stamped steel(e.g.,22MnB5 and 30MnB5),Nb and V microalloying elements are added into 30MnB5 steel to meet the requirements of ultra-high strength,excellent ductility and potent resistance to hydrogen embrittlement(HE)at the same *** influence of hot-stamped steel on HE was studied by conducting a hydrogen permeation method and pre-charged hydrogen slow strain rate ***,the experimental steel microstructures and corresponding fracture surfaces are observed and analyzed to characterize HE *** results show that a finer microstructure,a lower apparent diffusion coefficient of hydrogen and a smaller percentage of strength and plasticity reduction are obtained due to the addition of the vanadium element into hot-stamped *** to the V free experimental steel,the steel with 0.14 wt.% V has a large number of dispersive precipitates and more grain boundary areas,which makes hydrogen atoms dispersedly distribute.

关键词： Hot-stamped steel Vanadium Hydrogen embrittlement Hydrogen permeation test Slow strain rate test Microstructure

Overviews of reviews on patient compliance with medication protocols used in highly active antiretroviral therapy

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International Journal of Nursing Sciences 2015年第1期2卷 61-65页

作者： Liang Fu Yan Hu hong-zhou lu School of Nursing Fudan UniversityShanghaiChina Department of Infectious Disease Shanghai Public Health Clinical Center Affiliated with Fudan UniversityShanghaiChina

Purpose:To provide evidence support for the development of clinical practice guidelines regarding patient adherence to medication protocols used in highly active antiretroviral therapy(HAART)in ***:We analyzed information contained in recent systematic reviews and metaanalyses regarding patient compliance with medication protocols used in ***:Nine systematic reviews and one meta-analysis were included in our study which involved three different aspects of patient compliance:influencing factors,assessment methods,and ***:The high quality data obtained from our study was suitable for use in developing clinically useful guidelines for patent compliance with HAART medication protocols.

关键词： Acquired immunodeficiency syndrome Drug therapy Patient compliance Overviews of reviews

Application potential of high performance steels for weight reduction and efficiency increase in commercial vehicles

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Advances in Manufacturing 2015年第1期3卷 27-36页

作者： Jian Bian Hardy Mohrbacher Jian-Su Zhang Yun-Tang Zhao hong-zhou lu Han Dong Niobium Tech Asia Singapore NiobelCon BVBA SchildeBelgium Central Research Institute Baoshan Iron & Steel Co.Ltd. Shougang Research Institute of Technology Shougang Group Citic Metal Co.Ltd. Central Iron and Steel Research Institute

The fast-growing economy and the gradually established highway system have boosted the road trans- portation for both passenger and cargo over the last decade in China. From 2000 to 2010 Chinese GDP increased by around 10.15% annually and the sales of medium and heavy trucks by around 18.87% （sales increased from 0.2 million in 2000 to 1.3 million in 2010） according to the National Bureau of Statistics of People＇s Republic of China. Today commercial vehicles consume almost the same amount of fuel as pas- senger cars in China although the number of commercial vehicles is only about one fourth of passenger cars. It is estimated that around 50% of imported fuel to China each year will be consumed by vehicle transportation. This si- tuation will worsen fuel shortage problems in the long run and at the same time it is partially responsible for the ever- worsening air pollution in China. Due to the widespread overloading in China, lightweight development in commer- cial vehicles has fallen far behind that of passenger cars with the consequences that Chinese commercial vehicles consume in average about 20% more fuel, especially the heavy trucks, compared to European models. Under these circumstances it is essential to reduce the vehicle fuel consumption and in- crease the transport efficiency. The key solution thereby is to implement lightweight design in commercial vehicles as it has been successfully practiced over the last decade in the passenger cars. This paper summarizes highlights given in presentations during the ＂International seminar on the ap- plication of high strength steels in light weight commercial vehicles＂ with the focus on the development and application of Nb alloyed high performance steels made for lightweight commercial vehicles.

关键词： Commercial vehicle .Fuel consumptionLight weighting . High performance steel. Nb-basedmetallurgy

Deep learning-based lung sound analysis for intelligent stethoscope

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Military Medical Research 2024年第4期11卷 567-588页

作者： Dong-Min Huang Jia Huang Kun Qiao Nan-Shan Zhong hong-zhou lu Wen-Jin Wang Department of Biomedical Engineering Southern University of Science and TechnologyShenzhen 518055GuangdongChina The Third People’s Hospital of Shenzhen Shenzhen 518112GuangdongChina Guangzhou Institute of Respiratory Health China State Key Laboratory of Respiratory DiseaseNational Clinical Research Center for Respiratory Diseasethe First Affiliated Hospital of Guangzhou Medical UniversityGuangzhou 510120China

Auscultation is crucial for the diagnosis of respiratory system ***,traditional stethoscopes have inherent limitations,such as inter-listener variability and subjectivity,and they cannot record respiratory sounds for offline/retrospective diagnosis or remote prescriptions in *** emergence of digital stethoscopes has overcome these limitations by allowing physicians to store and share respiratory sounds for consultation and *** this basis,machine learning,particularly deep learning,enables the fully-automatic analysis of lung sounds that may pave the way for intelligent *** review thus aims to provide a comprehensive overview of deep learning algorithms used for lung sound analysis to emphasize the significance of artificial intelligence(AI)in this *** focus on each component of deep learning-based lung sound analysis systems,including the task categories,public datasets,denoising methods,and,most importantly,existing deep learning methods,i.e.,the state-of-the-art approaches to convert lung sounds into two-dimensional(2D)spectrograms and use convolutional neural networks for the end-to-end recognition of respiratory diseases or abnormal lung ***,this review highlights current challenges in this field,including the variety of devices,noise sensitivity,and poor interpretability of deep *** address the poor reproducibility and variety of deep learning in this field,this review also provides a scalable and flexible open-source framework that aims to standardize the algorithmic workflow and provide a solid basis for replication and future extension:https://***/contactless-healthcare/Deep-Learning-for-lung-Sound-Analysis.

关键词： Deep learning lung sound analysis Respiratory sounds

Hydrogen Embrittlement of Advanced High-Strength Steel for Automobile Application:A Review

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Acta Metallurgica Sinica(English Letters) 2023年第7期36卷 1144-1158页

作者： Ming-Tu Ma Ke-Jian Li Yu Si Peng-Jun Cao hong-zhou lu Ai-Min Guo Guo-Dong Wang State Key Laboratory of Vehicle NVH and Safety Technology Chongqing 401122China China Automotive Engineering Research Institute Co. Ltd.Chongqing 401122China School of Metallurgy and Materials Engineering Chongqing University of Science&TechnologyChongqing 401331China CITIC Metal Co.Ltd Beijing 100004China RAL of Dongbei University Shenyang 110819China

The hydrogen embrittlement(HE)fracture of advanced high-strength steels used in lightweight automobiles has received increasing public *** source,transmission,and movement of hydrogen,characterization parameters,and test methods of HE,as well as the characteristics and path of HE fractures,are *** mechanisms and modes of crack propagation of HE and hydrogen-induced delayed fracture are *** recent progress surrounding micro and macro typical fracture characteristics and the influencing factors of HE are ***,methods for improving HE resistance can be summarized as follows:(1)reducing crystalline grain and inclusion sizes(oxides,sulfides,and titanium nitride),(2)controlling nano-precipitates(niobium carbide,titanium carbide,and composite precipitation),and(3)increasing residual austenite content under the reasonable tension strength of steel.

关键词： Hydrogen embrittlement High-strength steel Hydrogen-induced delayed cracking Hydrogen trapping Residual austenite

Disseminated nontuberculous mycobacteria infection in human immunodeficiency virus-infected patients

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Chinese Medical Journal 2021年第23期134卷 2838-2840页

作者： Li Liu Jing-Jing Hu hong-zhou lu Department of Infectious Diseases and Immunology Shanghai Public Health Clinical CenterFudan UniversityShanghai 201508China School of Public Health Bengbu Medical CollegeBengbuAnhui 233000China.

Nontuberculous mycobacteria(NTM)infection can occur in both immunocompetent and immunocompromised patients,but disseminated NTM infection is mostly occurred in immunocompromised patients such as people using long-term immunosuppressants or patients with human immunodeficiency virus(HIV)infection,particular-ly in those with CD4+T lymphocyte count<50 cells/*** infection by NTM is considered a fatal acquired immunodeficiency syndrome(AIDS)-defining opportunistic infection with high mortality in this population.

关键词： patients infection immunodeficiency

The implementation and evaluation of HIV symptom management guidelines: A preliminary study in China

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International Journal of Nursing Sciences 2018年第4期5卷 315-321页

作者： Zheng Zhu Yan Hu Hui-wen Li Mei-juan Bao Lin Zhang Li-jun Zha Xue-hong Hou hong-zhou lu Fudan University School of Nursing ShanghaiChina Fudan University Centre for Evidence-based Nursing:A Joanna Briggs Institute Centre of Excellence ShanghaiChina Shanghai Public Health Clinical Center Affiliated to Fudan University ShanghaiChina

Objective:The overarching objective of this study was to examine the effectiveness of HIV symptom management guidelines in China in reducing the incidence and severity of symptoms and improving patients'quality of ***:We conducted a controlled,pre-and post-implementation design in the HIV/AIDS inpatient unit in *** recruited from November 2014 to February 2015 were in the intervention group and those from October 2013 to February 2014 were in the control *** were 74 patients in each *** in the intervention group received interventions based on the HIV symptom management *** symptom severity,depression,and quality of life were measured in two groups at baseline,week 4,and week ***:Totally 126 patients completed the research,65 in the intervention group and 61 in the control *** total symptom severity scores showed a statistically significant difference between groups across time(P0.05)in the intervention group were lower than those in the control group in week 8 without statistical *** multilevel growth mixture model indicated a greater increase in the total score of quality of life for the group treated according to the symptom management guidelines(P=0.04).Conclusion:The evidence-based HIV symptom management guidelines can improve a patient's quality of life and relieve negative *** guidelines can be applied in a similar context to other HIV/AIDS units or clinics.

关键词： Acquired immunodeficiency syndrome Evidence-based nursing Evidence-based practice HIV Symptom management

Dynamic effects of high-pressure pulsed water jet in low-permeability coal seams

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Journal of Coal Science & Engineering(China) 2009年第3期15卷 284-288页

作者： LI Xiao-hong zhou Dong-ping lu Yi-yu KANG Yong ZHAO Yu WANG Xiao-chuan Key Lab for the Exploitation of Southwestern Resources ＆ Environmental Disaster Control Engineering Chongqing University Chongqing 400030 China

Mine gas extraction in China is difficult due to the characteristics such as micro-porosity,low-permeability and high adsorption of coal *** pulsed mechanismof a high-pressure pulsed water jet was studied through theoretical analysis,experimentand field *** results show that high-pressure pulsed water jet has threedynamic ***'s more,the three dynamic effects can be found in low-permeabilitycoal seams.A new pulsed water jet with 200-1 000 Hz oscillation frequency andpeak pressure 2.5 times than average pressure was *** bubble collapsing,sound vibration and instantaneous high pressures over 100 MPa enhanced the cuttingability of the high-pressure *** high-pressure pulsed water jet drilling and slotting,the exposure area of coal bodies was greatly enlarged and pressure of the coal seamsrapidly ***,the permeability of coal seams was improved and gas absorptionrate also *** results show that gas adsorption rate decreasedby 30%-40%and the penetrability coefficient increased 100 *** proves that high-pressurepulsed water is more efficient than other conventional methods.

关键词： high-pressure pulsed water jet gas desorption penetrability dynamic effects

从“强起来”到“美起来”——中国式现代化新道路的美学审思

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理论探讨 2021年第6期 39-46页

作者：周红路黑龙江省社会科学院社会学所哈尔滨150028

站在“两个一百年”辉煌的历史交汇点,抚今追昔:在以毛泽东同志为主要代表的中国共产党人的坚强领导下,中华民族从政治上“站起来”了;在以邓小平同志为主要代表的中国共产党人的坚强领导下,中华民族从经济上“富起来”了;在以习近平同... 详细信息

站在“两个一百年”辉煌的历史交汇点,抚今追昔:在以毛泽东同志为主要代表的中国共产党人的坚强领导下,中华民族从政治上“站起来”了;在以邓小平同志为主要代表的中国共产党人的坚强领导下,中华民族从经济上“富起来”了;在以习近平同志为核心的党中央的团结带领下,中华民族从强党、强国、强军的政党治理、国家治理和军队治理的实践中“强起来”了。从理论逻辑、历史逻辑和实践逻辑的视角出发对中国社会发展进行美学审思,认为:在实现中华民族伟大复兴不可逆转的历史进程中,中国式现代化新道路的未来发展路向将是从“强起来”到“美起来”,展现出中华民族美好发展的全新图景。

关键词：中国式现代化新道路强起来美起来