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Application of Rare Earth Oxides in Diesel Exhaust Purification Catalysts

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Journal of Rare Earths 2004年第z1期22卷 194-196页

作者： Zhang zhaoliang Yu Pengfei wang Shilong Li Chunfeng Dai Hua College of Chemistry and Chemical Engineering Jinan University Jinan 250022 China Hainan Liuhe Enviromental Protection Catalysts Co. Ltd. Jinpan Industrial Development Zone Haikou 570216 China College of Chemistry and Chemical Engineering Jinan University Jinan 250022 China College of Chemistry and Chemical Engineering Jinan University Jinan 250022 China College of Chemistry and Chemical Engineering Jinan University Jinan 250022 China Hainan Liuhe Enviromental Protection Catalysts Co. Ltd.Jinpan Industrial Development Zone Haikou 570216 China

Diesel oxide catalysts and soot combustion catalysts were reported in this *** former was manufactured in mass last year, and enhanced performance is under development *** later is screened out and further research is under *** best soot combustion catalyst could ignite soot combustion even at 350 ℃, which is within the range of temperatures reached in diesel exhaust, and shows the catalytic combustion velocity nearly one time faster compared with non-catalytic combustion of soot, which is of benefit to rapid regeneration of diesel particulate filter, thus it might be an excellent practicable catalyst.

关键词： diesel oxidation catalyst soot combustion catalyst perovskite rare earths

New Early Triassic paleo-magnetic data from Huangben section,Guangdong and its tectonic implications

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Chinese Science Bulletin 2006年第15期51卷 1894-1902页

作者： SHEN Zhongyue DING Jinghai YE Changhe WEN Junwei wang zhaoliang CHEN Zhifei Department of Earth Sciences Zhejiang University Hangzhou 310027 China

A paleomagnetic study was carried out on a total of 122 oriented cores from Daye Formation of the Huangben section, Guangdong Province. Rock magnetic investigations show that low-titanium magnetite is a dominant carrier. Detailed progressive thermal demagnetization isolated 2―3 components. The low temperature component clusters around the present geomagnetic field direction. An intermediate temperature component is isolated at 100―400℃ and is interpreted as a Yanshanian remagnetization. A high-temperature characteristic remanent mag- netization (ChRM) is obtained at 400―530℃ with D = 51.1°,I = 15.3°,α95 = 5.0° and passes generalized fold test and reversal test, suggesting high tempera- ture component is a primary remanence. Its corre- spondent pole position is 38.5°N, 212.7°E (dp = 2.6, dm = 5.1), which overlaps contemporaneous pole of Yangtze Block at 95% confidence level. Therefore, we believe that Huanan and Yangtze blocks were not separated in the Early Triassic. Compared to other published Early Triassic paleomagnetic data from Huanan Block, the inclinations are very close but the declinations are greatly variable. In stereo-projection, all the Early Triassic poles from Huanan Block lie along a small circle around the Huanan Block, im- plying that local micro-blocks rotations lead to the inconsistence of Early Triassic paleomagnetic direc- tions.

关键词：早三叠纪古磁学华南板快扬子江板快

Conceptual design and heat transfer performance of a flat-tile water-cooled divertor target

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Plasma Science and Technology 2021年第9期23卷 194-205页

作者： Lei LI Le HAN Pengfei ZI Lei CAO Tiejun XU Nanyu MOU zhaoliang wang Lei YIN Damao YAO Institute of Plasma Physics Chinese Academy of SciencesHefei 230031People's Republic of China

The divertor target components for the Chinese fusion engineering test reactor(CFETR)and the future experimental advanced superconducting tokamak(EAST)need to remove a heat flux of up to20 MW *** view of such a high heat flux removal requirement,this study proposes a conceptual design for a flat-tile divertor target based on explosive welding and brazing *** water-cooled channels with a special thermal transfer structure(TTS)are designed in the heat sink to improve the flat-tile divertor target’s heat transfer performance(HTP).The parametric design and optimization methods are applied to study the influence of the TTS variation parameters,including height(H),width(W*),thickness(T),and spacing(L),on the *** research results show that the flat-tile divertor target’s HTP is sensitive to the TTS parameter changes,and the sensitivity is T>L>W*>*** HTP first increases and then decreases with the increase of T,L,and W*and gradually increases with the increase of *** optimal design parameters are as follows:H=5.5 mm,W*=25.8 mm,T=2.2 mm,and L=9.7 *** HTP of the optimized flat-tile divertor target at different flow speeds and tungsten tile thicknesses is studied using the numerical simulation method.A flat-tile divertor mock-up is developed according to the optimized *** addition,high heat flux(HHF)tests are performed on an electron beam facility to further investigate the mock-up *** numerical simulation calculation results show that the optimized flat-tile divertor target has great potential for handling the steady-state heat load of 20 MW m-2under the tungsten tile thickness<5 mm and the flow speed7 m s^(-1).The heat transfer efficiency of the flat-tile divertor target with rectangular cooling channels improves by13%and30%compared to that of the flat-tile divertor target with circular cooling channels and the ITER-like monoblock,*** HHF tests indicate that the flat-tile divertor mock-up can successfully withstand

关键词： CFETR heat transfer performance parametric design and optimization HHF tests flat-tile divertor target

MONOPHASIC ACTION POTENTIAL CHANGES OF RIGHT VENTRICULAR MYOCARDIUM INDUCED BY RADIOFREQUENCY CURRENT IN DOGS

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中国介入心脏病学杂志 1998年第4期6卷 168-169页

作者： Shan zhaoliang wang Sirang wang Yutang General Hospital of PLA Beijing 100853,China

To investigate the monophasic action potential changes of myocardiuminduced by radiofrequency catheter ablation in dogs,the right ventricularepicardium were ablated with radiofrequency(RF)energy(20 w,30 sac)via a 7 *** tip catheter in 8 *** catheter was used to record at8 different sites and at 3 different time before and after *** APA,APD90 and Vmax at the ablation site,marginal siteand reference site(20 mm from the ablation site)were measured beforeand after(immediately,30 min)*** interval from stimulationspike(S)(stimulated at right ventricular apex)to the [0] phase of localMAP were also ***:*** to 10 mm from the ablationsite,APA decreased to different *** was no change in the APDafter *** of ablation site and marginal zone decreased afterablation(P0.05).3.S-[0] phase interval increasedfrom ablation site to marginal site after ablation(ablation site 22.50±6.55ms vs 35.63±7.76 ms,P<0.001;marginal site 23.75±7.91 ms vs31.88+9.61 ms,P<0.01).Conclusion:RF energy can destroy or injuremyocardial tissue,and modificate cellular electrophysiology ofperinecrosis *** findings provide electrophyiologic basisfor sevasal clinincal observations following RFCA. Background:Most AV node reentrant tachycardia are easily induced duringelectrophysiologic ***,some could not be induced despite long *** to deal with such patients properly is practically *** thissituation,the radiofrequency ablation may provide a good results,but the experience *** clinical effect need further ***:To assess the clinicalefficacy of slow pathway ablation in patients with clinical documented but noninducibleAV node reentrant ***:The criteria of presumed diagnosis of common-type AV node reentrant tachycardia included tachycardia with pseudo-r’

关键词： tachycardia ablation retrograde sinus recurrence ventricle ACTION satisfactory radiofrequency myocardium

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微结构表面封闭式喷雾冷却传热特性

强激光与粒子束 2012年第9期24卷 2053-2058页

作者：张伟王照亮徐明海中国石油大学储运与建筑工程学院山东青岛266555

以蒸馏水为工质,在闭式循环喷雾冷却系统上,变化喷雾流量,研究了表面几何结构对喷雾传热性能的影响。从对流换热和相变换热比例关系的角度,对喷雾换热机理进行了实验研究。结果表明:与光滑表面相比,微结构表面可明显增强喷雾换热强度,... 详细信息

以蒸馏水为工质,在闭式循环喷雾冷却系统上,变化喷雾流量,研究了表面几何结构对喷雾传热性能的影响。从对流换热和相变换热比例关系的角度,对喷雾换热机理进行了实验研究。结果表明:与光滑表面相比,微结构表面可明显增强喷雾换热强度,这主要归因于相变换热的增强。表面温度较低时,直肋面换热效果最好;增大流量,光面换热增强,而直肋面变化不明显。表面温度较高时,方肋面换热效果最好;随着流量增大,所有面换热均增强。对于微结构表面,相变换热份额均大于50%,故而以相变换热为主;而光滑表面,即使在温度较低时,相变换热份额也大于20%。临界热流密度与三相接触线长度正相关,流量为15.9mL/min时,方肋面、直肋面和光面的临界热流密度依次为159.1,120.2,109.8W/cm2,蒸发效率分别为96.0%,72.5%,67.1%。

关键词：喷雾冷却微结构表面相变换热临界热流密度

电厂CO_2捕集工艺夹点分析与过程集成节能

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化工学报 2012年第2期63卷 593-598页

作者：王照亮王成运李清方张建中国石油大学(华东)储运与建筑工程学院山东青岛266555 胜利油田勘察设计研究院有限公司山东东营257026

电厂一乙醇胺(MEA)法烟气CO2捕集(CCS)工艺换热网络能量流密集,固有能耗高,对该工艺进行过程集成节能研究,具有重要意义。对CO2捕集工艺换热网络的夹点分析说明该换热网络存在跨越夹点的热量传递。冷热物流的总复合曲线特征说明了CO2捕... 详细信息

电厂一乙醇胺(MEA)法烟气CO2捕集(CCS)工艺换热网络能量流密集,固有能耗高,对该工艺进行过程集成节能研究,具有重要意义。对CO2捕集工艺换热网络的夹点分析说明该换热网络存在跨越夹点的热量传递。冷热物流的总复合曲线特征说明了CO2捕集工艺固有能耗高的特性。对换热网络进行调优并提出了节能技术方案:①在夹点之上利用MEA贫液的部分高温位热量加热预吸附塔再生气;②采用MEA再生塔产生的湿CO2混合物作为驱动热源,跨越夹点设置一台氨吸收式制冷机以替代CO2液化所需部分制冷量。基于过程集成节能提出的换热集成节能措施可有效降低CO2捕集工艺固有能耗,使蒸汽耗量降低21%,冷却水耗量降低17.2%,CO2液化所需低温冷却公用工程降低43.4%。

关键词： CO2捕集夹点分析过程集成节能固有能耗

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封闭式喷雾冷却系统启动时间

强激光与粒子束 2011年第9期23卷 2356-2360页

作者：王照亮马永张伟赵欣中国石油大学(华东)热能与动力工程系山东青岛266555

以蒸馏水为冷却工质,对冷凝器内置的封闭式光滑表面喷雾冷却系统进行了启动时间变化规律的实验研究,结果表明喷雾系统不同模块最优启动顺序为冷凝器、泵和加热器。采取6种不同的启动顺序,启动后加热表面的温度不均匀度均小于0.25℃。在... 详细信息

以蒸馏水为冷却工质,对冷凝器内置的封闭式光滑表面喷雾冷却系统进行了启动时间变化规律的实验研究,结果表明喷雾系统不同模块最优启动顺序为冷凝器、泵和加热器。采取6种不同的启动顺序,启动后加热表面的温度不均匀度均小于0.25℃。在最优启动顺序下,研究了冷却水流量、泵高度、加热功率和喷雾流量对启动时间的影响。随冷却水流量和喷雾流量增加启动时间缩短,随泵高度增加启动时间略微增大,随加热功率增大启动时间先增大后减小。启动时间影响程度由大到小的因素依次为喷雾流量、冷却水流量、加热功率及泵相对于加热表面的高度。喷雾工质流量由10mL/min增大到35mL/min时,封闭式喷雾系统的启动时间缩短了5 000s。同样操作条件下,封闭式系统的启动时间比开放式系统延长15%～20%。

关键词：封闭式系统喷雾冷却启动性能驱动力温度不均匀度操作条件

基于电子-声子耦合的GaN HEMT产热和输运模拟研究

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中国科学：技术科学 2024年第11期54卷 2107-2121页

作者：胡宝义王照亮徐科唐大伟中国石油大学(华东)新能源学院青岛266580 中国科学院苏州纳米技术与纳米仿生研究所苏州215123 大连理工大学能源与动力学院大连116024

随着晶体管制程减小,器件的自热问题逐渐受到重视.为了精确描述晶体管器件内部电子-声子耦合产生局部热点的过程,本文以GaN HEMT为研究对象,提出了一种迭代求解的电子-声子耦合蒙特卡罗方法.该方法采用电子蒙特卡罗方法模拟电子输运过程... 详细信息

随着晶体管制程减小,器件的自热问题逐渐受到重视.为了精确描述晶体管器件内部电子-声子耦合产生局部热点的过程,本文以GaN HEMT为研究对象,提出了一种迭代求解的电子-声子耦合蒙特卡罗方法.该方法采用电子蒙特卡罗方法模拟电子输运过程,采用声子蒙特卡罗模拟声子输运过程,通过传递热源和温度场信息实现二者迭代求解.在电子蒙特卡罗方法中施加不同温度场,研究了热点产热的温度效应.发现温度上升后,峰值热点处发射声子减少,高频声子贡献增加,峰值热点处产热功率密度线性增大,每1 K温升导致产热功率密度上升1×10^(16)W/m^(3).迭代求解收敛后,产热功率密度和峰值温度有所上升,上升幅度受到初值影响.对热点作用下的声子输运进行分解,由于较大的比热容和群速度,低频声子的热流贡献更大.在热点影响下,高频声子热流贡献增加,最高可达35%,这种选择性激发造成了声子模式间的非平衡现象,阻碍了热输运过程.本文展现了电子-声子耦合过程中温度迭代的重要性,为晶体管自热效应模拟提供了参考.

关键词： GaN HEMT 电子-声子耦合蒙特卡罗方法温度效应非平衡输运

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哈尔滨市某桩锚支护深基坑工程监测

建筑结构学报 2016年第7期37卷 144-150页

作者：崔高航刘守花王兆亮东北林业大学土木工程学院黑龙江哈尔滨150040 云南建工基础工程有限责任公司云南昆明650000

地处北纬44°04＇-46°40＇的哈尔滨地区冬季有6个月,但对该地区工程建设中的基坑开挖及其监测理论的研究较少,对于严寒地区跨越寒冷冬季基坑开挖技术的研究成果更是匮乏。通过对越冬施工的哈尔滨一基坑工程开挖监测的数据统计分析,归... 详细信息

地处北纬44°04＇-46°40＇的哈尔滨地区冬季有6个月,但对该地区工程建设中的基坑开挖及其监测理论的研究较少,对于严寒地区跨越寒冷冬季基坑开挖技术的研究成果更是匮乏。通过对越冬施工的哈尔滨一基坑工程开挖监测的数据统计分析,归纳了坑壁变形特征并对坑壁护壁桩破损原因进行了探讨。锚杆轴力检测结果表明,基坑中间层锚杆轴力设计值偏大,具有一定的优化空间。基坑周边路面下沉,最大沉降值为8.2mm,远小于警戒值25mm;排桩最大水平位移为13.7mm,远小于警戒值45 mm;锚杆轴力最大值127kN,小于其锚杆轴力设计值。该基坑支护方案可行、整体稳定性良好。

关键词：深基坑桩锚支护开挖监测冻胀空间效应冻融循环锚索轴力