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Centrifuge modeling of a large-scale surcharge on adjacent foundation

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第8期16卷 3181-3191页

作者： Jinzhang Zhang Zhenwei Ye Dongming Zhang Hongwei Huang Shijie Han tong zou Le Zhang Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education and Department of Geotechnical Engineering Tongji UniversityShanghai200092China CCCC Third Harbor Consultants Co LtdShanghai200032China Qingdao Conson Jiaozhou Bay Second Subsea Tunnel Co. LtdQingdao266000China

This study investigates the ground and structural response of adjacent raft foundations induced by largescale surcharge by ore in soft soil areas through a 130g centrifuge modeling test with an innovative layered loading *** prototype of the test is a coastal iron ore yard with a natural foundation of deep soft ***,it is necessary to adopt some measures to reduce the influence of the large-scale surcharge on the adjacent raft foundation,such as installing stone columns for foundation *** an acceleration of 130 g,the model conducts similar simulations of iron ore,stone columns,and raft foundation *** tested soil mass has dimensions of 900 mm×700 mm×300 mm(lengthwidthdepth),which is remodeled from the soil extracted from the drilling *** test conditions are consistent with the actual engineering conditions and the effects of four-level loading conditions on the composite foundation of stone columns,unreinforced zone,and raft foundations are *** automatic layer-by-layer loading device was innovatively developed to simulate the loading process of actual engineering more *** composite foundation of stone columns had a large settlement after the loading,forming an obvious settlement trough and causing the surface of the unreinforced zone to *** 12 m surcharge loading causes a horizontal displacement of 13.19 cm and a vertical settlement of 1.37 m in the raft *** stone columns located on both sides of the unreinforced zone suffered significant shear damage at the sand-mud *** to the reinforcement effect of stone columns,the sand layer below the top of the stone columns moves ***,the horizontal earth pressure in the raft foundation zone increases *** stone columns will form new drainage channels and accelerate the dissipation of excess pore pressure.

关键词： Centrifuge modeling Stone column Composite foundation Ground movement Raft foundation

Effects of matrix metalloproteinase 9 inhibition on the blood brain barrier and inflammation in rats following cardiopulmonary resuscitation

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Chinese Medical Journal 2009年第19期122卷 2346-2351页

作者： HE Zhi-jie HUANG Zi-tong CHEN Xiao-tong zou Zi-jun Department of ICU the Second Affiliated Hospital of Sun Yat-sen University Guangzhou Guangdong 510120 China

Background Neuroprotective strategies following cardiopulmonary resuscitation （CPR） are an important focus in emergency and critical care medicine. Matrix metalloproteinases （MMPs）, especially MMP9 attracted much attention because of its function in focal brain ischemia/reperfusion injury. In the focal cerebral ischemia model in rats, SB-3CT can suppress the expression of MMP9, relieving brain edema, and there was no studies on global cerebral ischemiareperfusion injury after CPR. Methods One hundred and twenty rats were randomly assigned to sham-operated （n=40）, resuscitation treatment （n=40）, and resuscitation control （n= 40） groups. Sham-operated group rats were anesthetized only and intubated tracheally, while the resuscitation treatment and resuscitation control groups also received cardiac arrest by asphyxiation, In the resuscitation treatment group, SB-3CT was injected intraperitoneally after restoring spontaneous circulation （ROSC）, defined as restoration of supraventricular rhythm and mean arterial pressure （MAP）〉 60 mm Hg for more than 5 minutes. The resuscitation control group also implemented ROSC without injection of SB-3CT. The rats were executed and samples were taken immediately after death, then at 3, 9, 24, and 48 hours （n=-8）. Brain tissue expression of MMP9 protein, MMP9 mRNA, water content, Evans blue content, TNF-α, IL-1, and IL-6 was measured, and the brain tissue ultramicrostructure studied with electron microscopy. Results In the resuscitation control group, brain tissue expression of MMP9 protein and mRNA, water content, Evans blue content, TNF-α, IL-1, and IL-6 were significantly elevated at 3 hours, and peaked at 24 hours after resuscitation, when compared with the sham-operated group （P 〈0.05）. 1issue ultramicrostructure also changed in the resuscitation control group. By contrast, although all these indexes were increased in the resuscitation treatment group compared with the sham-operated group （P 〈0.05）, they were lower than in the r

关键词： cardiopulmonary resuscitation blood brain barrier inflammation matrix metalloproteinase 9 SB-3CT

Progress of the satellite laser ranging system TROS1000

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Geodesy and Geodynamics 2015年第1期6卷 67-72页

作者： Guo Tangyong Wang Peiyuan Li Xin Zhu Wei zou tong Li Shipeng Luo Qingshan Key Laboratory of Earthquake Geodesy Institute of Seismology CEA Wuhan Base of Institute of Crustal Dynamics CEA Space Research Institute Austrian Academy of Sciences

The mobile satellite laser ranging system TROS1000, successfully developed in 2010, achieves a high repetition rate and enables daytime laser ranging. Its measurement range has reached up to 36000 km with an accuracy as precise as 1 cm. Using recent observations in Wuhan, Jiufeng, Xianning, and Rongcheng, Shandong, we introduce the progress made using this mobile observation system.

关键词： Satellite laser ranging k Hz ranging Mobile SLR Event timer Crustal deformation Observation technology Beidou second-generation

Optimization of dendritic TS-1/Silica micro–mesoporous composites for efficient hydrodesulfurization of dibenzothiophene and 4,6-dimethyldibenzothiophene

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Petroleum Science 2023年第4期20卷 2521-2530页

作者： Cheng-Kun Xiao Yu-tong zou Dong-Ze Li En-Hua Wang Ao-Cheng Wang Dao-Wei Gao Ai-Jun Duan Peng Zheng Xi-Long Wang State Key Laboratory of Heavy Oil Processing China University of PetroleumBeijing102249China School of Chemistry and Chemical Engineering University of JinanJinanShandong250022China

A novel composite material(TD)composed of TS-1 microcrystalline and dendritic mesoporous silica nanospheres(DMSNs)was successfully *** TD composite material had open pore structure and large specific surface area,which was conducive to the mass transfer of reactants and *** Ti element in TS-1 could be used as an electron assistant,and the spillover d-electrons were conducive to the improvement of the sulfidation and dispersion of MoS_(2),thereby forming more type II MoS_(2) active *** incorporation of Ti could bring more Brønsted(B)and Lewis(L)acid,which was conducive to the hydrogenation pathway(HYD)selectivity(41.2%)of dibenzothiophene(DBT)hydrodesulfurization(HDS)and isomerization(ISO)route selectivity(21.9%)of 4,6-dimethyldibenzothiophene(4,6-DMDBT)HDS,thus improve the HDS activity of DBT and 4,***/TD-70(Aging temperature=70℃)had the best HDS activities of DBT(99.0%)and 4,6-DMDBT(93.7%)due to its large open pore structure,good acidity,suitable metal-support interaction(MSI)and perfect dispersion of the metallic active sites.

关键词： Dendritic TS-1-DMSNs composites NiMo/TD catalysts Dibenzothiophene4,6-Dimethyldibenzothiophene Hydrodesulfurization

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真空槽内不同装载率对真空预冷效果的影响

天津大学学报 2007年第10期40卷 1171-1175页

作者：刘斌邹同华天津大学热能研究所天津300072 天津商业大学制冷系天津300134

当真空预冷设备结构一定时,预冷工艺过程主要由预冷果蔬品种及装载率决定.通过分析预冷过程中槽内压力的动态变化过程,讨论了质交换系数及装载率对槽内压力的影响.在此基础上,进行了多棵白菜、单棵白菜、生菜及蘑菇的真空预冷试验,装载... 详细信息

当真空预冷设备结构一定时,预冷工艺过程主要由预冷果蔬品种及装载率决定.通过分析预冷过程中槽内压力的动态变化过程,讨论了质交换系数及装载率对槽内压力的影响.在此基础上,进行了多棵白菜、单棵白菜、生菜及蘑菇的真空预冷试验,装载率分别为53.6%、3.76%、11.2%和20.5%.试验结果表明,装载率较大时,槽内压力能保持在一个较高的值,从而防止预冷果蔬表面结冰现象;对于质传递系数较大的果蔬,装载率可以低一些,从而缩小预冷时间.因此在进行真空预冷时要根据果蔬种类确定装载率.

关键词：园艺学贮藏保鲜预冷质传递系数

中国乡村旅游发展模式研究——成都农家乐与北京民俗村的比较与对策分析

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旅游学刊 2005年第3期20卷 63-68页

作者：邹统钎中国人民大学商学院

本文比较了成都农家乐与北京民俗村的发展历程、发展模式与政府规制办法,指出乡村性是乡村旅游的核心,乡村旅游的标准管理、规模经营与经营者的“飞地化”导致乡村性的消失,主张乡村旅游应从主题、地格与氛围三方面塑造与维系乡村性,应... 详细信息

本文比较了成都农家乐与北京民俗村的发展历程、发展模式与政府规制办法,指出乡村性是乡村旅游的核心,乡村旅游的标准管理、规模经营与经营者的“飞地化”导致乡村性的消失,主张乡村旅游应从主题、地格与氛围三方面塑造与维系乡村性,应该强化特色分类管理、合理规划、坚持“本地化”

关键词：乡村旅游农家乐民俗村发展模式

高尔基体蛋白73与甲胎蛋白对肝癌诊断价值的研究

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海南医学 2014年第16期25卷 2398-2400页

作者：邹同会汪永强邹军内江市第二人民医院泸州医学院附属内江医院检验科四川内江641100

目的探讨甲胎蛋白(AFP)与高尔基体蛋白73(GP73)对肝癌早期诊断的价值。方法采用酶联免疫法(Enzyme linked immunosorbent assay,ELISA)对肝癌患者80例、肝硬化患者30例血清中AFP、GP73进行检测,30例健康体检者作为对照。结果 1肝癌组、... 详细信息

目的探讨甲胎蛋白(AFP)与高尔基体蛋白73(GP73)对肝癌早期诊断的价值。方法采用酶联免疫法(Enzyme linked immunosorbent assay,ELISA)对肝癌患者80例、肝硬化患者30例血清中AFP、GP73进行检测,30例健康体检者作为对照。结果 1肝癌组、肝硬化组、正常对照组AFP平均浓度为64.5μg/L、50.1μg/L、21.9μg/L(肝癌组vs对照组P<0.01,肝硬化组vs对照组P<0.01,肝硬化组vs肝癌组P<0.01),肝癌组、肝硬化组、正常对照组GP73平均浓度为268.4μg/L、192.3μg/L、49.8μg/L(P<0.01)。2AFP诊断肝癌的ROC曲线下面积为0.729,P=0.000,GP73诊断肝癌的ROC曲线下面积为0.892,P=0.000。AFP联合GP73对肝癌诊断的ROC曲线下面积为0.902。结论 GP73诊断肝癌的价值高于AFP,AFP+GP73联合检测不能提高诊断效率。

关键词：肝细胞癌甲胎蛋白高尔基体蛋白73 ROC曲线

A correction method of encoder bias in satellite laser ranging system

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Geodesy and Geodynamics 2013年第3期4卷 61-64页

作者： Wang Peiyuan Zhu Wei zou tong Guo Tangyong Key Laboratory of Earthquake Geodesy Institute of SeismologyChina Earthquak Administration Wuhan Base of Institute of Crustal Dynamics China Earthquake Administration

In a satellite laser ranging telescope system, well-aligned encoders of the elevation and azimuth axes are essential for tracking objects. However, it is very difficult and time-consuming to correct the bias between the absolute-position indices of the encoders and the astronomical coordinates, especially in the absence of a finder scope for our system. To solve this problem, a method is presented based on the phenomenon that all stars move anti-clockwise around Polaris in the northern hemisphere. Tests of the proposed adjustment procedure in a satellite laser ranging （SLR）system demonstrated the effectiveness and the time saved by using the approach, which greatly facilitates the optimization of a trackin~ svstem.

关键词： correction encoder index telescope satellite laser ranging

公共产品供给、社会资本与获得感--基于灾区重建调查数据的实证分析

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中南民族大学学报（人文社会科学版） 2023年第2期43卷 127-137,186,187页

作者：张惠邹彤彤广州大学公共管理学院广东广州510006 北京航空航天大学公共管理学院北京100191

灾后恢复是一个资源重整和再生的社会过程,政府通过公共产品供给进行资源调度,增强灾民的获得感,以达到有效治理的目的。考察灾民对公共产品供给的评价在何种程度上影响获得感有助于避免无效治理,具有重要的现实意义。基于2018年汶川地... 详细信息

灾后恢复是一个资源重整和再生的社会过程,政府通过公共产品供给进行资源调度,增强灾民的获得感,以达到有效治理的目的。考察灾民对公共产品供给的评价在何种程度上影响获得感有助于避免无效治理,具有重要的现实意义。基于2018年汶川地震灾民调查数据,主要运用多元回归分析法和调节效应模型,研究社会公平性产品评价对获得感的影响机制,结果表明:(1)社会公平性产品评价对获得感有显著影响,影响效果在不同性别、受教育情况和婚姻状况的个体之间具有明显差异;(2)社会资本对社会公平性产品评价与获得感间关系具有显著负向调节作用,存在挤出效应。研究结果意味着政府在灾后重建中应更关注公共产品供给规划,从更精细的角度考虑不同灾民群体需求的差异与变化,从而不断提升其获得感。

关键词：灾后重建获得感公共产品社会资本脆弱群体灾害韧性

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