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Hypothesis testing for reliability with a three-parameter Weibull distribution using minimum weighted relative entropy norm and bootstrap

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Journal of Zhejiang University-Science C(Computers and Electronics) 2013年第2期14卷 143-154页

作者： Xin-tao XIA Yin-ping JIN yong-zhi xu Yan-tao SHANG Long CHEN School of Mechatronical Engineering Henan University of Science and Technology School of Mechatronical Engineering Northwestern Polytechnical University

With the help of relative entropy theory,norm theory,and bootstrap methodology,a new hypothesis testing method is proposed to verify reliability with a three-parameter Weibull *** on the relative difference information of the experimental value vector to the theoretical value vector of reliability,six criteria of the minimum weighted relative entropy norm are established to extract the optimal information vector of the Weibull parameters in the reliability experiment of product *** rejection region used in the hypothesis testing is deduced via the area of intersection set of the estimated truth-value function and its confidence interval function of the three-parameter Weibull *** case studies of simulation lifetime,helicopter component failure,and ceramic material failure indicate that the proposed method is able to reflect the practical situation of the reliability experiment.

关键词： Reliability Hypothesis testing Three-parameter Weibull distribution Weighted relative entropy Norm Bootstrap

Association between Serum Ferritin Levels and Metabolic-associated Fatty Liver Disease in Adults:a Cross-sectional Study Based on the NHANES

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Current Medical Science 2024年第3期44卷 494-502页

作者： Jiang-hui LI xue-yao MA Yun YI Lu-rao LI zhi-yong xu Ying CHANG Department of Gastroenterology Zhongnan Hospital of Wuhan UniversityWuhan430071China Hubei Clinical Center and Key Laboratory of Intestinal and Colorectal Diseases Wuhan430071China Endoscopy Center The People’s Hospital of YingshanHuanggang438799China

Objective Ferritin,initially acting as an iron-storage protein,was found to be associated with metabolic *** study was designed to investigate the association between serum ferritin and metabolic-associated fatty liver disease(MAFLD)using data from the National Health and Nutrition Examination Survey(NHANES)of the United State of *** A cross-sectional study was conducted,enrolling a total of 2145 participants from the NHANES in the 2017–2018 *** steatosis and liver fibrosis were assessed by ultrasound images and several non-invasive *** regression analysis was conducted to determine the associations between serum ferritin concentration and MAFLD and liver *** The analysis revealed that participants with higher serum ferritin levels(Q3 and Q4 groups)had a higher prevalence of MAFLD than those with the lowest serum ferritin levels[Q3 vs.Q1:OR=2.17(1.33,3.53),P<0.05 in fatty liver index(FLI);Q4 vs.Q1:OR=3.13(1.91,5.13),P<0.05 in FLI].Additionally,participants with the highest serum ferritin levels(Q4 group)displayed a higher prevalence of liver fibrosis[Q4 vs.Q1:OR=2.59(1.19,5.62),P<0.05 in liver stiffness measurement;OR=5.06(1.12,22.94),P<0.05 in fibrosis-4 index],with significantly increased risk observed in participants with concomitant diabetes[OR=7.45(1.55,35.72),P=0.012].Conclusion Our study revealed that elevated serum ferritin levels are associated with a higher prevalence of MAFLD and advanced liver fibrosis in *** serum ferritin levels combined with diabetes are important risk factors for liver fibrosis.

关键词： serum ferritin liver fibrosis metabolic-associated fatty liver disease National Health and Nutrition Examination Survey

Synthesis and Characterization of Reactive Poly(Aryl Ether Ketone Ketone) Containing Cyclohexene Ring

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Chinese Chemical Letters 1999年第12期10卷 0-0页

作者： Ying Nan xuAN Xi Gao JIAN zhi yong xu(Department of polymer Science, College of Chemical Engineering, Dalian University ofTechnology, Dalian 116012) Dalian Univ Technol Coll Chem Engn Dept Polymer Sci Dalian 116012 Peoples R China

A novel heterocyclic poly (aryl ether ketone ketone) (PPEKK) containing cyclohexenering was prepared from 1-methyl-cyclohex-1-ene-4, 5 -diyl-bis(4-chlorophenyl methanone) and 4 (4-hydroxyphenyl)(2H) phthalazin-1-one. ... 详细信息

关键词： Engineering thermoplastics poly(aryl ether ketone ketone) synthesis.

Using the SELDI ProteinChip System to Detect Changes in Protein Expression in Vero Cells after Infection

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中国病毒学 2007年第1期22卷 68-73页

作者： zhi-jun LIU Bin WANG zhi-yong YAN xu-xia SONG Dong-meng QIAN zhi-qiang BAI Department of Microbiology Qingdao Medical College and Key Laboratory of Medicine and Biotechnology of Qingdao Qingdao University Medical College Qingdao 266021China

人的疱疹单一的病毒(HSV-1 ) 1 引起美容，眼睛，并且 encephalitic 疾病并且与潜伏的感染和癌症被联系。这里，我们开发了由使用 SELDI 蛋白质薄片在在 vitro 有教养的 Vero 房间检测蛋白质表示的变化在蛋白质水平学习 HSV-1 感染的致... 详细信息

人的疱疹单一的病毒(HSV-1 ) 1 引起美容，眼睛，并且 encephalitic 疾病并且与潜伏的感染和癌症被联系。这里，我们开发了由使用 SELDI 蛋白质薄片在在 vitro 有教养的 Vero 房间检测蛋白质表示的变化在蛋白质水平学习 HSV-1 感染的致病的一个工具。在有为 12， 24 或 48 h 的 HSV-1 和文化的感染以后，房间被收获并且 lysed。IMAC3 数组被用于 SELDI-TOF-MS 在感染前后检测 proteomic 差别。薄片检测了一系列差别表示蛋白质山峰。有趣地，在 16 912 Da 的山峰和 17 581 Da 与 ISG15 的分子的团精确相应，它可以在感染的过程期间参予抗病毒的活动。因此，我们获得了的结果能用作一个基础学习在病毒和它的主人之间的 HSV-1 和相互作用的致病。另外，他们能为 HSV-1 感染的治疗在新治疗学的目标的发现帮助。关键词 SELDI 蛋白质薄片 - Vero 房间 - HSV-1 - 蛋白质表达式 CLC 数字 R373 基础项目：中国(30540075 ) 的国家自然科学基础；

关键词： SELDI Protein Chip Vero Cells HSV-1 Protein Expression

Effect of isoflurane on expression of NR4A1 in hypoxic pulmonary artery

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Journal of Hainan Medical University 2019年第17期25卷 25-28页

作者： Rong Liu zhi-yong xu Hao Weng Ding-Ding Huang Department of Anesthesiology Shanghai University of Medicine & Health Sciences Affiliated Sixth People's Hospital South Campus Shanghai Fengxian District Central Hospital Shanghai 201499 China

Objective: To investigate the effects of emulsified isoflurane on hypoxic pulmonary artery endothelial cells (HPAECs) injury and orphan nuclear receptor subfamily 4A1 (NR4A1) expression. Methods: HPAECs were divided into normal control group, model group and test group. Normal control group was cultured under normoxia. Cells in model group and test group were treated in a hypoxic chamber with oxygen concentration of about 3% (95% N2+ 5% CO2) for 2 h. The final concentration of 1 mmol·L-1 emulsified isoflurane was added to the test group, and 30% Intralipid? was added to the normal control group and the model group. MTT method was used to detect cell proliferation, Hoechst 33258 nuclear staining was used to detect cell apoptosis, Griess method was used to detect the production of NO in cell supernatant, and real-time fluorescence quantitative PCR (q-RT-PCR) was used to detect the expression of NR4A1 in cells. Results: After 12 h of intervention, the cell viability of normal control group, model group and test group were (98.45±2.41)%, (15.46±2.69)%, (79.52±4.16)%, the apoptosis rate were (2.51±0.36)%, (50.12±3.36)%, (22.15±3.42)%respectively, the concentration of NO in the culture supernatant were (59.52±4.1) μmol·L^-1, (25.16±4.85) μmol·L^-1, (43.58±6.19) μmol·L^-1, and the relative expression of NR4A1 were 1.00±0.09, 5.89±0.41, 2.39±0.24, respectively. The difference was statistically significant (P<0.05). Conclusion: Emulsified isoflurane can promote the proliferation, inhibit apoptosis and increase NO production of hypoxic HPAECs. NR4A1 may be involved in the endogenous protective mechanism of endothelial cell injury after hypoxia.

关键词： Emulsified isoflurane Hypoxia Endothelial cell injury Proliferation Apoptosis Orphan nuclear receptor subfamily 4A1

Recent Advances in Fibrous Materials for Hydroelectricity Generation

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Nano-Micro Letters 2025年第2期17卷 109-133页

作者： Can Ge Duo xu Xiao Feng Xing Yang Zheheng Song Yuhang Song Jingyu Chen Yingcun Liu Chong Gao yong Du Zhe Sun Weilin xu Jian Fang College of Textile and Clothing Engineering Soochow UniversitySuzhou 215123People’s Republic of China National Engineering Laboratory for Modern Silk Soochow UniversitySuzhou 215123People’s Republic of China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan 430200People’s Republic of China Institute of Functional Nano&Soft Materials(FUNSOM) Soochow UniversitySuzhou 215123People’s Republic of China Department of Electrical and Computer Engineering University of MassachusettsAmherstMA 01003USA Department of Materials Imperial College LondonSouth Kensington CampusLondon SW72AZUK College of Textile Science and Engineering Zhejiang Sci-Tech UniversityHangzhou 310018People’s Republic of China School of Materials Science and Engineering Shanghai Institute of Technology100 Haiquan RoadShanghai 201418People’s Republic of China

Depleting fossil energy sources and conventional polluting power generation pose a threat to sustainable *** generation from ubiquitous and spontaneous phase transitions between liquid and gaseous water has been considered a promising strategy for mitigating the energy *** materials with unique flexibility,processability,multifunctionality,and practicability have been widely applied for fibrous materials-based hydroelectricity generation(FHG).In this review,the power generation mechanisms,design principles,and electricity enhancement factors of FHG are first ***,the fabrication strategies and characteristics of varied constructions including 1D fiber,1D yarn,2D fabric,2D membrane,3D fibrous framework,and 3D fibrous gel are ***,the advanced functions of FHG during water harvesting,proton dissociation,ion separation,and charge accumulation processes are analyzed in ***,the potential applications including power supply,energy storage,electrical sensor,and information expression are also ***,some existing challenges are considered and prospects for future development are sincerely proposed.

关键词： Hydroelectricity Fibrous material Streaming potential Ion diffusion

基于KPI理论的铁路基层站段关键绩效指标研究

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铁道运输与经济 2017年第10期39卷 84-88页

作者：师永郭志敏许红太原铁路局财务处山西太原030013

为使铁路运输企业将精力集中于影响企业经营目标的关键活动上,并最终完成总体绩效目标,在概述关键绩效指标(KPI)理论的基础上,根据铁路运输企业的总体考核要求,运用KPI方法工具,对影响经营业绩的安全、运输收入、利润、运量及周转量、... 详细信息

为使铁路运输企业将精力集中于影响企业经营目标的关键活动上,并最终完成总体绩效目标,在概述关键绩效指标(KPI)理论的基础上,根据铁路运输企业的总体考核要求,运用KPI方法工具,对影响经营业绩的安全、运输收入、利润、运量及周转量、客户等关键成功因素进行分析,在关键成功因素的基础上确定铁路运输企业下属基层站段的关键绩效指标,将关键绩效指标与每位员工的具体工作挂钩,以有效地对其工作情况进行评价。

关键词：铁路运输企业经营业绩关键绩效指标绩效管理考核体系

A low redox potential and long life organic anode material for sodium-ion batteries

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Journal of Energy Chemistry 2025年第1期100卷 557-564页

作者： zhi Li Yang Wei Kang Zhou Xin Huang Xing Zhou Jie xu Taoyi Kong Junwei Lucas Bao Xiaoli Dong yonggang Wang Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Institute of New Energy Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) Fudan University Department of Chemistry Boston College School of Materials Science and Engineering Anhui University of Technology

Sodium-ion batteries （SIBs） with organic electrodes are an emerging research direction due to the sustainability of organic materials based on elements like C,H,O,and sodium ***,organic electrode materials for SIBs are mainly used as cathodes because of their relatively high redox potentials（>1 V）.Organic electrodes with low redox potential that can be used as anode are ***,a novel organic anode material （tetrasodium 1,4,5,8-naphthalenetetracarboxylate,Na4TDC） has been developed with low redox potential （<0.7 V） and excellent cyclic *** three-sodium storage mechanism was demonstrated with various in-situ/ex-situ spectroscopy and theoretical calculations,showing a high capacity of 208 mAh/g and an average decay rate of merely 0.022%per ***,the Na4TDC-hard carbon composite can further acquire improved capacity and cycling stability for 1200 cycles even with a high mass loading of up to 20 mg *** pairing with a thick Na3V2（PO4）3cathode (20.6 mg cm-2),the as-fabricated full cell exhibited high operating voltage （2.8 V）,excellent rate performance and cycling stability with a high capacity retention of 88.7% after 200 cycles,well highlighting the Na4TDC anode material for SIBs.

关键词： Organic anode material Low redox potential Composite anode Sodium-ion batteries

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橄榄球运动员身体素质测试方法

解放军体育学院学报 2003年第2期22卷 48-49页

作者：刘勇徐志解放军体育学院橄榄球队广东广州510500

橄榄球运动员具备全面的身体素质是非常重要的 ,而测定和评估运动员全面的身体素质需要掌握必要的方法 ,才能在身体素质方面为比赛做好充分的准备。

关键词：橄榄球身体素质测试