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HKUST-1颗粒对低浓度氙氪混合气体动态吸附分离性能的研究

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原子能科学技术 2024年第2期58卷 308-319页

作者：陈彬傅钰曹天伍岳张文祥韦冠一武山马和平西安交通大学化学工程与技术学院陕西西安710049 西北核技术研究所陕西西安710024

低浓度放射性氙(Xe)和氪(Kr)混合气的吸附分离对于其核数据的准确测量以及核设施放射性废气的净化具有重要意义。本文采用聚乙烯醇作为粘结剂制备了HKUST-1颗粒样品。HKUST-1颗粒样品的抗压测试结果表明,其具有较高的抗压强度。HKUST-1... 详细信息

低浓度放射性氙(Xe)和氪(Kr)混合气的吸附分离对于其核数据的准确测量以及核设施放射性废气的净化具有重要意义。本文采用聚乙烯醇作为粘结剂制备了HKUST-1颗粒样品。HKUST-1颗粒样品的抗压测试结果表明,其具有较高的抗压强度。HKUST-1粉末样品和颗粒样品的Xe(Kr)静态吸附数据表明,在0℃或25℃吸附温度下,HKUST-1粉末样品和颗粒样品低吸附压力下的Xe(Kr)吸附量、Xe(Kr)亨利系数以及Xe/Kr亨利选择性基本相同;造粒后颗粒样品的Xe(Kr)零点等量吸附热较造粒前减小。采用动态穿透曲线法研究了HKUST-1颗粒样品在25℃和100 kPa下分离低浓度Xe和Kr(Xe 50 ppm、Kr 50 ppm)的性能。结果表明,HKUST-1颗粒样品可实现低浓度的Xe/Kr分离,Xe穿透(c/c 0=0.02)时的Xe动态吸附量和相应的Xe/Kr动态吸附选择性随瞬时进样流量的增大而增大,Xe(Kr)饱和吸附量及相应的Xe/Kr动态吸附选择性在不同瞬时进样流量下基本保持不变。惠勒-琼斯方程对Xe穿透曲线初始部分(c/c 0≤0.02)的非线性拟合结果表明,该方程可用于预测Xe在HKUST-1颗粒吸附柱上穿透的初始阶段。

关键词： HKUST-1 造粒低浓度气体氙氪动态分离

EVIDENCE OF COMAGMATIC ORIGIN OF THE ENDMEMBER ROCKS OF THE ZHAHEBAR OPHIOLITIC SUITE, XINJIANG

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Scientia Geologica Sinica 1999年第3期 383-390页

作者： Wu Chunming Pan Y■sheng and wei guanyi(Institute of Geology,Chinese Academy of Sciences Beijing 100029)wei guanyi and Shi Shaoqing(Department of Geotogy,Chengdu Institute of Technotogy Chengdu 610059)

Located in the southem site and as One part of the Beitashan-Zhahebar-Almantai-Kokasentawu OphioliticZone, Northem Zunger, Northem Xinjiang, the Zhahebar Ophiolite is consisted mainly of metaperidotite,gabbro, diabasoid, basalt and siliceous rocks. There two kinds of metaperidotite, among which one is ofmagmatic origin, while another is of partial melting origin. The original sequence of the Zhahebarophiolite is destroyed due to later structural movement (e. g. the obduction process). Moreover, comparedto the well-developed ophiolites in the world, the Zhahebar Ophiolite has (a) no sheet-like dikes; (b) nomallc cumulative rocks, (c) no pillow-like basalts, (d) no radiolarian fossils in the siliceous rocks. But,Transition Elements (TE), REE distribution types clearly show that its end-merners-metaperidotite,gabbro, diabasoid, diorite and basalt-are (a) of comagmatic origin; (b) with very clear W-shaped TEdistribution curves and Cr, Ni negative anomay, and the linear relationship between logNi vs. logCo of theendmember rocks reflects their comagmatic evolutional characteristics; (c) with T-type basalt REEdistribution curves and Ce, Eu negative anomaly, and that not only the endmember rocks are comagmatic,but also the original magma came from T-type mantle (transitional). Pearce Element Ratios (PER) researchalso shows that the endmember rocks are comagmatic; Furthermore, the original magma evolved bycontinuos crystallization of standard minerals cpx+pl, this is confirmed by the actual occurrence ofclinopyroxene and plagioclase phenocrysts in almost all the ultramafic and esPecially the mafic rocks. Theexistence of two kinds ofmetaperidotite-one is of partial melting origin, another is ofcrystallization origin-is repeatedly confirmed by TE, REE and PER researches. So we can ascertain that the Zhahebar Ophioliteis actually a kind of sequential ophiolite.

关键词： Ni EVIDENCE OF COMAGMATIC ORIGIN OF THE ENDMEMBER ROCKS OF THE ZHAHEBAR OPHIOLITIC SUITE XINJIANG

采用MasterCAM9.0的西门子802D数控系统铣床后置处理程序的开发

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制造技术与机床 2008年第5期 131-133页

作者：魏保立魏冠义郑州铁路职业技术学院河南郑州450052

通过分析MasterCAM9.0的FANUC数控系统的后置处理程序,结合SINUMERIK802D数控系统的XKN714数控铣床的编程特点,开发了专用的后置处理程序,使MasterCAM9.0生成的程序能够直接应用于XKN714数控铣床的加工。

关键词： MasterCAM9.0 XKN714数控铣床后置处理程序

Monitoring of atmospheric radionuclides from the Fukushima nuclear accident and assessing their impact on Xi'an, China

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Chinese Science Bulletin 2013年第4期58卷 1585-1591页

作者： LIU LongBo WU Shan CAO JunJi XIE Feng SHI QuanLin ZHANG ChangYun TANG HanBing HE XiaoBin ZHANG Rong CHEN LiYun wei guanyi ZHANG ZhiHong ZHANG JiaMei DANG HaiJun Northwest Institute of Nuclear Technology Institute of Earth Environment Chinese Academy of Sciences

Aerosol radionuclides (131I, 134Cs, 137Cs) and gaseous radioactive xenon (133Xe) were monitored at Xi'an, China following the accident at the Fukushima nuclear power plant in March 2011. The additional annual effective dose attributable to the Fukushima emissions was much lower than the public annual effective dose from natural radiation, according to Chinese national standards. The monitoring results were compared with data from other countries as well as with the radionuclide concentrations observed in Xi'an after the Chernobyl nuclear accident in 1986. Possible transport pathways of the released radionuclides from Fukushima to Xi'an were investigated. The occurrence of an anticyclone in the Pacific Ocean region and the extended period over which the radionuclides were released made the determination transport pathways complex, but divergence in the plume and easterly flow evidently brought the initial suite of radionuclides to Xi'an.

关键词：切尔诺贝利核事故中国国家标准放射性核素监测结果西安年有效剂量评估大气

Network analysis of suicide ideation and depression-anxiety symptoms among Chinese adolescents

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General Psychiatry 2024年第2期37卷 216-223页

作者： Shuyin Xu Yumeng Ju Xiyu wei Wenwen Ou Mohan Ma guanyi Lv Xiaotian Zhao Yaqi Qin Yunjing Li Liang Li Mei Huang Siqi Yang Yimei Lu Yafei Chen Junwu Liu Jin Liu Bangshan Liu Yan Zhang Department of Psychiatry National Clinical Research Center for Mental Disordersand National Center for Mental DisordersThe Second Xiangya Hospital of Central South UniversityChangshaHunanChina Mental Health Institute of Central South University China National Technology Institute on Mental DisordersHunan Technology Institute of PsychiatryHunan Key Laboratory of Psychiatry and Mental HealthHunan Medical Center for Mental HealthChangshaHunanChina

Background The co-occurrence of depression and anxiety among adolescents is typically associated with suicide *** The study aimed to investigate the symptom-level relationship between suicide ideation and the comorbidity of depression and *** 1501 adolescents aged 12-19 years were assessed using the Patient Health Questionnaire(PHQ-9)and the Generalized Anxiety Disorder Scale,and 716 adolescents who scored≥5 on both scales were selected as *** analysis was used to identify the network structure of depressive symptoms and anxiety *** were categorised into either the suicide ideation or non-suicide ideation groups based on their scoring on the suicide-related item in PHQ-9.A comparison was made between the depression-anxiety symptom networks of the two ***‘Restlessness’,‘sad mood’and‘trouble relaxing’were the most prominent central symptoms in the depression-anxiety symptom network,and‘restlessness’,‘nervousness’and‘reduced movement’were the bridge symptoms in this network.‘Sad mood’was found to be directly related to‘suicide ideation’with the highest *** network structure was significantly different in properties between the suicide ideation group and the non-suicide ideation group,with‘restlessness’and‘sad mood’exhibiting significantly higher influence in the network of the suicide ideation group than that in the non-suicide ideation *** Restlessness and sad mood could be targeted for the intervention of depression-anxiety symptoms among adolescents with suicide ideation.

关键词： symptoms adolescent assessed

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液态挤压工艺参数对铝基复合材料质量的影响

热加工工艺 2018年第3期47卷 163-166页

作者：魏冠义齐晓华张勇郑州铁路职业技术学院

铝基复合材料通常采用液态挤压成形。本文针对硼酸铝晶须增强铝基复合材料的液态挤压过程,分析了铝合金基体温度、模具温度、保压时间以及冷却速率四个重要的工艺参数对液态挤压铝基复合材料质量的影响,得到了工艺参数与液态挤压铝基复... 详细信息

铝基复合材料通常采用液态挤压成形。本文针对硼酸铝晶须增强铝基复合材料的液态挤压过程,分析了铝合金基体温度、模具温度、保压时间以及冷却速率四个重要的工艺参数对液态挤压铝基复合材料质量的影响,得到了工艺参数与液态挤压铝基复合材料质量的关系。结果表明：对液态挤压以6061铝合金为基材的硼酸铝晶须增强铝基复合材料,其最佳的工艺参数为模具预热温度430~500℃,铝合金基体温度690~730℃、保压时间20~30 min、冷却速率1.4~1.6℃/min。制件的气孔率0.24%~0.78%,抗拉强度最大达到240 MPa,伸长率达到12.3%。该研究结果能为铝基复合材料液态挤压工艺参数优化提供参考。

关键词：铝基复合材料液态挤压工艺参数

基于QForm的6082铝合金吊耳锻造工艺优化

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热加工工艺 2019年第17期48卷 113-116页

作者：魏冠义杨峰齐晓华郑州铁路职业技术学院河南郑州451460 石家庄铁道大学机械工程学院河北石家庄050043

铝合金吊耳外形复杂、强度要求高。分析了6082铝合金吊耳的锻造工艺,运用专业锻造有限元仿真软件QForm建立了吊耳锻造的有限元仿真模型,分析了不同成形时间下的成形和金属流动特征。根据仿真结果对模具进行了优化,对优化前后的成形件外... 详细信息

铝合金吊耳外形复杂、强度要求高。分析了6082铝合金吊耳的锻造工艺,运用专业锻造有限元仿真软件QForm建立了吊耳锻造的有限元仿真模型,分析了不同成形时间下的成形和金属流动特征。根据仿真结果对模具进行了优化,对优化前后的成形件外形进行了比较。结果表明:使用优化前的模具锻造的铝合金吊耳,在复杂部位存在折叠缺陷;使用优化后的模具锻造,锻件可避免折叠缺陷,且单件节约原材料19.96%。

关键词：铝合金吊耳锻造工艺模具优化 QForm软件

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液态模锻工艺对机械活塞低温性能的影响

热加工工艺 2018年第1期47卷 181-184页

作者：齐晓华魏冠义张勇郑州铁路职业技术学院

采用不同的压力和浇注温度进行了Al-12Si-1Cu-1Mg-0.5Ce新型铝合金机械活塞的液态模锻成形,并进行了试样的冲击性能和耐磨损性能的测试与分析。结果表明：随浇注温度从650℃提高至800℃、压力从10 MPa增加至50 MPa,活塞的冲击性能和耐... 详细信息

采用不同的压力和浇注温度进行了Al-12Si-1Cu-1Mg-0.5Ce新型铝合金机械活塞的液态模锻成形,并进行了试样的冲击性能和耐磨损性能的测试与分析。结果表明：随浇注温度从650℃提高至800℃、压力从10 MPa增加至50 MPa,活塞的冲击性能和耐磨损性能均先提高后下降。优化的浇注温度和压力分别为725℃、30 MPa。

关键词：液态模锻工艺机械活塞冲击性能耐磨损性能

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飞行时间质谱宽能量聚焦反射器设计

质谱学报 2018年第1期39卷 28-35页

作者：袁祥龙李志明翟利华韦冠一徐江汪伟沈小攀王文亮岳东宁西北核技术研究所陕西西安710024

离子的能量分散是影响飞行时间质谱分辨率的主要因素之一。本研究在Vlasak提出的宽能量聚焦反射器设计方法的基础上,通过同时优化飞行时间反射器各电极间的距离和电压的方法,使宽能量分布的离子具有更好的时间聚焦性能,并采用SIMION软... 详细信息

离子的能量分散是影响飞行时间质谱分辨率的主要因素之一。本研究在Vlasak提出的宽能量聚焦反射器设计方法的基础上,通过同时优化飞行时间反射器各电极间的距离和电压的方法,使宽能量分布的离子具有更好的时间聚焦性能,并采用SIMION软件建立的仿真模型验证该方法的有效性。理论计算和仿真实验表明,本设计方法对极板加工和装配的误差可通过微调极板电压补偿,这有效地降低了仪器研制过程中的机械加工和装配精度的要求,从而进一步提高了方法的实用性。

关键词：飞行时间质谱仪能量聚焦反射器分辨率电场渗透