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基于DEMATEL-ISM的电动绳索升降机性能影响研究

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机械研究与应用 2024年第5期37卷 46-49,56页

作者：庞杰岳越谢磊王晓鹏中国民用航空飞行学院航空工程学院四川广汉618307

为了提高电动绳索升降机性能,该文采用集成决策实验室分析法和解释结构模型法来分析影响升降机性能的各个因素以及各因素的中心度和原因度,并从中找出关键原因因素(电机选型、抓绳机构、结构材料、电池设计和攀爬类型)及关键结果因素(... 详细信息

为了提高电动绳索升降机性能,该文采用集成决策实验室分析法和解释结构模型法来分析影响升降机性能的各个因素以及各因素的中心度和原因度,并从中找出关键原因因素(电机选型、抓绳机构、结构材料、电池设计和攀爬类型)及关键结果因素(载重、运行距离、减速机选型、最大速度和加减速)。再对系统层次进行划分,对影响升降机性能的深层因素和根本因素进行分析,从而得出系统的深层影响因素(结构材料、电池设计、电机选型和抓绳机构)及根本影响因素(攀爬类型)。所研究结果为提升升降机性能提供思路和方向。

关键词： DEMATEL ISM 电动绳索升降机

Laparoscopic liver resection for hepatocellular carcinoma complicated with significant portal hypertension:A propensity score-matched survival analysis

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Hepatobiliary & Pancreatic Diseases International 2023年第4期22卷 358-365页

作者： Zhang-You Guo Yuan Hong Bing Tu Yao cheng xiao-Mei Wang Department of Minimally Invasive Interventional Therapy Yunnan Cancer HospitalThe Third Affiliated Hospital of Kunming Medical UniversityYunnan Cancer CenterKunming 650118China Medical Laboratory The First Affiliated Hospital of Kunming Medical UniversityInstitute of Experimental Diagnostics of Yunnan ProvinceKey Laboratory of Laboratory Medicine of Yunnan ProvinceKunming 650032China Department of Hepatobiliary Surgery The Second Affiliated HospitalChongqing Medical UniversityChongqing 400010China

Background: Significant portal hypertension(SPH) is a relative contraindication for patients with resectable hepatocellular carcinoma(HCC). However, increasing evidence indicates that liver resection is feasible for HCC patients with SPH. Methods: HCC patients with cirrhosis who underwent laparoscopic liver resection(LLR) in two centers from January 2013 to April 2018 were included. Surgical and survival outcomes were analyzed to explore potential prognostic factors. Propensity score matching(PSM) analysis was performed to minimize bias. Results: A total of 165 patients were divided into two groups based on the presence(SPH, n = 76) or absence(non-SPH, n = 89) of SPH. Patients in the SPH group had longer operative time, more blood loss, and more advanced TNM stage than patients in the non-SPH group( P 0.05). After PSM, alpha-fetoprotein(AFP) ≥ 400 μg/L [hazard ratio(HR) = 4.71, 95% confidence interval(CI): 2.69-8.25], ascites(HR = 2.18, 95% CI: 1.30-3.66), American Society of Anesthesiologists(ASA) classification(Ⅲ vs. Ⅱ)(HR = 2.13, 95% CI: 1.11-4.07) and tumor diameter > 5 cm(HR = 3.91, 95% CI: 2.02-7.56) independently predicted worse OS. Conclusions: LLR for patients with HCC complicated with SPH appears feasible at the price of increasing operative time and blood loss. AFP, ascites, ASA classification and tumor diameter may predict the prognosis of HCC complicat

关键词： Hepatocellular carcinoma Significant portal hypertension Laparoscopic liver resection Propensity score matching analysis

Assessment of Snow Depth over Arctic Sea Ice in CMIP6 Models Using Satellite Data

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Advances in Atmospheric Sciences 2021年第2期38卷 168-186页

作者： Shengzhe CHEN Jiping LIU Yifan DING Yuanyuan ZHANG xiao cheng Yongyun HU Department of Atmospheric and Environmental Sciences University at AlbanyState University of New YorkAlbanyNY 12222USA College of Global Change and Earth System Science and State Key Laboratory of Remote Sensing ScienceBeijing Normal UniversityBeijing 100875China School of Geospatial Engineering and Science Sun Yat-sen UniversityZhuhai 519000China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519000China Department of Atmospheric and Oceanic Sciences School of PhysicsPeking UniversityBeijing 100871China University Corporation for Polar Research Beijing 100875China

Snow depth over sea ice is an essential variable for understanding the Arctic energy *** this study,we evaluate snow depth over Arctic sea ice during 1993-2014 simulated by 31 models from phase 6 of the Coupled Model Intercomparison Project(CMIP6)against recent satellite *** CMIP6 models capture some aspects of the observed snow depth climatology and *** observed variability lies in the middle of the models’*** the models show negative trends of snow depth during ***,substantial spatiotemporal discrepancies are *** to the observation,most models have late seasonal maximum snow depth(by two months),remarkably thinner snow for the seasonal minimum,an incorrect transition from the growth to decay period,and a greatly underestimated interannual variability and thinning trend of snow depth over areas with frequent occurrence of multi-year sea *** models are unable to reproduce the observed snow depth gradient from the Canadian Arctic to the outer areas and the largest thinning rate in the central *** projections suggest that snow depth in the Arctic will continue to decrease from 2015 to *** the SSP5-8.5 scenario,the Arctic will be almost snow-free during the summer and fall and the accumulation of snow starts from *** investigation into the possible causes of the issues for the simulated snow depth by some models based on the same family of models suggests that resolution,the inclusion of a hightop atmospheric model,and biogeochemistry processes are important factors for snow depth simulation.

关键词： snow depth Arctic sea ice CMIP6 satellite projection

A Chinese family with Axenfeld-Rieger syndrome:report of the clinical and genetic findings

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International Journal of Ophthalmology(English edition) 2017年第6期10卷 847-853页

作者： Da-peng Sun Yun-Hai Dai xiao-Jing Pan Tao Shan Dian-Qiang Wang peng Chen Qingdao University Qingdao 266071 Shandong Province China State Key Laboratory Cultivation Base Shandong Provincial Key Laboratory of Ophthalmology Shandong Eye Institute Shandong Academy of Medical Sciences Qingdao 266071 Shandong Province China

AIM： To describe a Chinese family affected by a severe form of Axenfeld-Rieger syndrome （ARS） and characterize the molecular defect in PITX2 in the family. METHODS： Patients presented with typical ARS from a Chinese family were investigated. We performed genome- wide linkage scan and exome sequencing to identify the pathogenic mutations, Candidate mutations were verified for co-segregation in the whole pedigree using Sanger sequencing, Real-time polymerase chain reaction （RT- PCR） and Western blotting were performed to verify the expression of the pathogenic gene. RESULTS： Genome-wide linkage and exome sequencing analyses showed PITX2 as the disease candidate gene. A〉G substitution at position -11 of 3＇ss of exon 5 （IVS5- 11A〉G） that co-segregated with the disease phenotype was discovered in the family. The PITX2 messenger ribonucleic acid and protein levels were about 50% lower in patients with ARS than in unaffected family members in the family, CONCLUSION： Our findings implicate the first intronic mutation of the PITX2 gene in the pathogenesis of a severe form of ARS in a Chinese family. This study highlights the importance of a systematic search for intronic mutation in ARS cases for which no mutations in the exons of PITX2 have been found.

关键词： Axenfeld-Rieger syndrome exome sequencing linkage analysis PITX2 intronic mutation

Evaluating and Constraining Hardware Assertions with Absent Scenarios

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Journal of Computer Science & Technology 2020年第5期35卷 1198-1216页

作者： Hui-Na Chao Hua-Wei Li xiaoyu Song Tian-cheng Wang xiao-Wei Li State Key Laboratory of Computer Architecture Institute of Computing TechnologyChinese Academy of Sciences Beijing 100190China University of Chinese Academy of Sciences Beijing 100049China peng cheng Laboratory Shenzhen 518052China Department of Electrical and Computing Engineering Portland State UniversityPortlandOR 97207U.S.A.

Mining from simulation data of the golden model in hardware design verification is an effective solution to assertion *** the simulation data is inherently incomplete,it is necessary to evaluate the truth values of the mined *** paper presents an approach to evaluating and constraining hardware assertions with absent scenarios.A Belief-fail Rate metric is proposed to predict the truth/falseness of generated *** considering both the occurrences of free variable assignments and the conflicts of absent scenarios,we use the metric to sort true assertions in higher ranking and false assertions in lower *** Belief-failRate guided assertion constraining method leverages the quality of generated *** experimental results show that the Belief-failRate framework performs better than the existing *** addition,the assertion evaluating and constraining procedure can find more assertions that cover new design functionality in comparison with the previous methods.

关键词： hardware formal verification assertion generation data mining assertion evaluation assertion coverage

Low cyclic fatigue performance of concrete-filled steel tube columns

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Journal of Central South University 2015年第10期22卷 4035-4042页

作者：秦鹏谭杨肖岩 College of Civil Engineering Hunan University

Eight concrete-filled steel tubular(CFT) columns were tested subjected to cyclic loading under constant axial load. Experimental parameters included axial compression ratio, loading sequences, and strength of concrete and steel. The seismic performance of CFT columns and failure modes were analyzed. The test results show that different axial load ratios and loading sequences have effects on the load carrying capacity, ductility and energy dissipation capacity of CFT columns, as well as the failure modes of the CFT columns. The failure pattern can be categorized into two types: local buckling failure of steel tube in compression zone, and low cycle fatigue tearing rupture failure of steel tube. The seismic behavior was evaluated through the energy index obtained from each cycle.

关键词： concrete-filled steel tubular columns low cyclic fatigue seismic performance failure mode

Integrated study of the water–ecosystem–economy in the Heihe River Basin

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National Science Review 2014年第3期1卷 413-428页

作者： Guodong cheng Xin Li Wenzhi Zhao Zhongmin Xu Qi Feng Shengchun xiao Honglang xiao Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences

The ecological water diversion project in the Heihe River Basin is the irst successful case in China in which the ecological systems in a river basin have been rescued. his project serves as a valuable example for the management of ecosystems in other inland river basins. his paper reviews the integrated studies of the water–ecosystem–economy relationship in the Heihe River Basin and concludes that sustainable development in inland river basins requires the basin to be considered as a whole, with the relationships between the upstream, midstream and downstream areas of the basin coordinated appropriately. Successful development in these basins will be relected in an improved output per cubic meter of water and the implementation of integrated river basin management practices.

关键词： Heihe River Basin water–ecosystem–economy integrated study climate change human activity ecological water diversion

Massive abiotic methane production in eclogite during cold subduction

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National Science Review 2023年第1期10卷 143-153页

作者： Lijuan Zhang Lifei Zhang Ming Tang xiao Wang Renbiao Tao cheng Xu Thomas Bader Ministry of Education Key Laboratory of Orogenic Belts and Crustal Evolution School of Earth and Space SciencesPeking University

Methane（CH4） is a critical but overlooked component in the study of the deep carbon *** CH4produced by serpentinization of ultramafic rocks has received extensive attention,but its formation and flux in mafic rocks during subduction remain poorly ***,we report massive CH4-rich fluid inclusions in well-zoned garnet from eclogites in Western Tianshan,*** characteristics and carbon-hydrogen isotopic compositions confirm the abiotic origin of this *** P-T-fO2-fluid trajectories and Deep Earth Water modeling imply that massive abiotic CH4was generated during cold subduction at depths of 50-120 km,whereas CO2was produced during *** massive production of abiotic CH4in eclogites may result from multiple mechanisms during prograde high pressure-ultrahigh pressure *** flux calculation proposes that abiotic CH4that has been formed in HP-UHP eclogites in cold sub duction zones may represent one of the largest,yet overlooked,sources of abiotic CH4on Earth.

关键词： abiotic CH4 fluid inclusion prograde HP-UHP metamorphism CO2 Western Tianshan

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废弃矿山生态环境修复分区与修复方案研究

世界有色金属 2024年第12期 131-133页

作者：张玲燕罗小平杨朔鹏宁夏回族自治区国土资源调查监测院宁夏银川750000

宁夏矿产资源丰富,开发历史悠久,是国家重要的能源化工基地,支撑着宁夏工业化和城镇化快速发展的半壁江山。在20世纪90年代发展时期,矿产资源的大规模开发利用,为宁夏较大破坏,威胁着黄河的健康安澜。因此对废弃矿山进行生态修复是现阶... 详细信息

宁夏矿产资源丰富,开发历史悠久,是国家重要的能源化工基地,支撑着宁夏工业化和城镇化快速发展的半壁江山。在20世纪90年代发展时期,矿产资源的大规模开发利用,为宁夏较大破坏,威胁着黄河的健康安澜。因此对废弃矿山进行生态修复是现阶段刻不容缓的工作。在矿山生态环境修复过程中,通过对矿区的土壤因子指数进行分析后划分矿区土壤带,从而进行废弃矿山生态环境修复分区指标体系的建设,更好实现生态环境恢复。本文将对废弃矿山生态环境修复分区进行研究,并充分结合废弃矿山生态恢复原则开展废弃矿山生态环境恢复方案的研究,有效提升废弃矿山生态环境恢复的效果。

关键词：废弃矿山生态环境修复修复分区修复方案

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