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Effect of La on Partial Oxidation of Ethanol to Hydrogen over Ni/Fe Catalysts

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Chemical Research in Chinese Universities 2003年第2期19卷 206-210页

作者： wang Wei ping wang zhi fei DING Yan and LU Gong xuan State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000P.R.China

The partial oxidation of ethanol to hydrogen was investigated over Ni/Fe/La catalysts prepared by the co precipitation method. The effects of introduction of La promoter and the reaction temperature on the catalytic performance were studied. It was found that the introduction of La into Ni/Fe catalysts is helpful to increase the selectivity to hydrogen and the stability of the catalysts. The results of XRD and XPS characterization show that the structure of the catalyst was changed during the reaction. The existence of LaFeO 3 species is possibly the main reason of the increase of the catalyst stability.

关键词： Ethanol Ni/Fe/La catalyst Partial oxidation Production of hydrogen

Reinfection and Risk Factors of SARS-CoV-2 during an Omicron Wave 2022 in Shanghai

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Biomedical and Environmental Sciences 2024年第2期37卷 204-209页

作者： wang Pei Qin wang Xiao Hang wang Jian SHI zhi Wen CHU Dong Mei wang zhi fei ZHANG Mu Bai LIU Wei ZHOU Zi Jie XIE Wei Fen Department of Gastroenterology Changzheng HospitalNaval Medical UniversityShanghai 200003China Health examination center Changzheng HospitalNaval Medical UniversityShanghai 200003China

Multiple waves of coronavirus disease 2019(COVID-19) outbreaks have affected numerous countries worldwide. The first case of SARS-CoV-2 reinfection was reported in Hong Kong in August 2020^([1]), leading to increased interest in the effectiveness of natural immunity acquired from primary infection. While data reports vary across countries, all findings indicate that prior SARS-CoV-2 infection provides substantial protection against reinfection^([2]). However, natural immunity from infection with previous non-Omicron or early Omicron sub-lineages offers lower levels of protection against Omicron reinfection, with rates below 60%^([3]) and approximately 75%[4], respectively.

关键词： immunity infection Omi

Laparoscopic left hemihepatectomy under occlusion of the left inflow and outflow

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Chinese Medical Journal 2008年第20期121卷 2103-2106页

作者： CAI Xiu-jun wang zhi-fei YU Hong wang Yi-fan LIANG Xiao PENG Shu-you Department of General Surgery Sir Run Run Shaw Hospital College of Medicine Institute of Minimally Invasive Surgery Zhejiang University Hangzhou Zhejiang 310016 China Department of General Surgery Second Affiliated Hospital College of Medicine Zhejiang University Hangzhou Zhejiang 310009 China Department of General Surgery Fourth Affiliated Hospital of Harbin Medical University Harbin Heilongjiang 150001 China

Laparoscopic hepatectomy seems to be difficult because of the ease of bleeding from the liver parachyma during resection. This is not easily controlled under the laparoscope, especially during right or left hemihepatectomy, except for resection of the peripheral liver or left lateral segment when porta hepatis dissection is not indicated. Although both inflow and outflow control seems to be ideal in laparoscopic left hepatectomy, there have not been many reports of this. In addition to the high technical demands and the time required, any injury of the main hepatic veins or vena cava during the procedure will cause catastrophic bleeding and air embolism. Recently, we succeeded in achieving inflow and outflow occlusion during laparoscopic left hemihepatectomy in four cases, with satisfactory results.

关键词： vascular occlusion laparoscopic hepatectomy air embolism

黑腹果蝇吞噬细胞对金黄葡萄球菌与大肠埃希菌的不同吞噬作用

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浙江农林大学学报 2017年第3期34卷 381-388页

作者：王徵朱斐浙江农林大学动物科技学院浙江临安311300

吞噬作用是一种对抗微生物病原体的重要机制,但许多细菌均有抗吞噬作用。利用透射电镜和激光共聚焦显微镜结合细胞生物学技术,对黑腹果蝇Drosophila melanogaster S2细胞吞噬热灭活大肠埃希菌(heat inactivated Escherichia coli,HIEC)... 详细信息

吞噬作用是一种对抗微生物病原体的重要机制,但许多细菌均有抗吞噬作用。利用透射电镜和激光共聚焦显微镜结合细胞生物学技术,对黑腹果蝇Drosophila melanogaster S2细胞吞噬热灭活大肠埃希菌(heat inactivated Escherichia coli,HIEC)和热灭活金黄葡萄球菌(heat inactivated Staphylococcus aureus,HISA)的作用进行了研究。结果表明:S2细胞能够在接种后1 d内有效清除HIEC,但不能清除HISA;经聚肽糖(PG)或脂多糖(LPS)激活的S2细胞同样不能有效地清除HISA,HISA能够在S2细胞内至少存活4 d。在接种细胞酸性指示剂(p Hrodo)标记的细菌1h后,HIEC处于酸化环境中,而HISA没有;检测S2细胞的吞噬百分率显示S2细胞吞入活细菌与灭活细菌的敏感度没有显著差异。PG处理后的S2细胞防御素(defensin)与抗真菌肽(drosomycin)均显著上调表达,但仍无法消化HISA。结果证实:灭活金黄葡萄球菌表面具有抑制吞噬作用中消化步骤的成分,而灭活大肠埃希菌没有。研究揭示了在S2细胞对抗革兰氏阳性菌时,吞噬作用在清除该类病原体时所起到的重要作用以及金黄葡萄球菌抑制消化过程从而抵御细胞吞噬的策略。

关键词：免疫生物学吞噬作用黑腹果蝇金黄葡萄球菌大肠埃希菌防御素抗真菌肽

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R^N中带不定线性项的椭圆方程解的存在性

兰州大学学报（自然科学版） 2007年第3期43卷 127-130页

作者：王非之烟台大学数学与信息科学学院山东烟台264005

证明了RN中一类带不定线性项的椭圆方程非平凡解的存在性．所得结论是通过使用Lyapunov- Schmidt约化方法和山路引理获得的．

关键词：临界点椭圆方程 Lyapunov-Schmidt约化山路引理

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聚苯硫醚熔体的压致凝固行为

物理学报 2020年第9期69卷 197-203页

作者：王志飞王路王菊刘秀茹西南交通大学物理科学与技术学院材料先进技术教育部重点实验室成都610031

采用施加压力的方法将聚苯硫醚熔体凝固,凝固后获得的聚苯硫醚样品经过降温和卸压后在常温常压下回收. X射线衍射和差示扫描量热分析表明:约20 ms时间的快速压缩过程可以抑制熔体结晶,制备出非晶态聚苯硫醚块材,样品的表面及中心都是非... 详细信息

采用施加压力的方法将聚苯硫醚熔体凝固,凝固后获得的聚苯硫醚样品经过降温和卸压后在常温常压下回收. X射线衍射和差示扫描量热分析表明:约20 ms时间的快速压缩过程可以抑制熔体结晶,制备出非晶态聚苯硫醚块材,样品的表面及中心都是非晶态.非晶态聚苯硫醚的玻璃化转变温度和晶化温度分别为318和362 K.常压下的退火实验表明,非晶态聚苯硫醚在425 K等温结晶的产物为正交相晶型.压致凝固法中熔体的凝固不是靠温度变化,而是靠压力变化,样品表面和内部处在一致的温度下同时受压凝固,避免了热传导对非晶尺寸的影响,因此非常有利于获得结构均匀的大尺寸非晶态材料.

关键词：压致凝固非晶态聚苯硫醚玻璃化转变晶化

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涡轮导向叶片热冲击数值模拟研究

推进技术 2016年第10期37卷 1938-1945页

作者：关鹏艾延廷王志王腾飞沈阳航空航天大学辽宁省航空推进系统先进测试技术重点实验室辽宁沈阳110136

研究热冲击作用下涡轮导向叶片的热应力及振动模态,旨在从热-结构影响角度揭示静子叶片损伤机理,对其热疲劳寿命分析及抗热疲劳设计具有重要意义。基于瞬态热/流耦合理论,采用有限元/边界元方法,实现某型航空发动机涡轮导向叶片在热冲... 详细信息

研究热冲击作用下涡轮导向叶片的热应力及振动模态,旨在从热-结构影响角度揭示静子叶片损伤机理,对其热疲劳寿命分析及抗热疲劳设计具有重要意义。基于瞬态热/流耦合理论,采用有限元/边界元方法,实现某型航空发动机涡轮导向叶片在热冲击作用下的温度场计算,在此基础上求解出叶片的热应力及振动模态。研究表明,采用瞬态流/热耦合可以有效预测叶片的温度分布,其结果与试验误差为6%;依据计算所得热应力及模态振型,可以推断出叶片出现热损伤的位置,且与实验结果吻合较好;根据数值模拟结果,固有频率随温度的升高而下降,前六阶频率平均下降24.7%。

关键词：涡轮导向叶片瞬态流/热耦合热应力场模态分析

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关于辽宁三大区域互动发展的思考

东北师大学报（哲学社会科学版） 2011年第1期 36-40页

作者：王知非东北师范大学城市与环境科学学院吉林长春130024

区域经济一体化是衡量区域开放开发水平的重要标尺。结合辽宁实际,笔者提出了辽宁三大区域互动、一体化发展的内涵,即构建一体化的交通网络、港口群、产业群、城镇群和市场体系。同时对辽宁三大区域互动发展的条件进行了分析,在此基础上... 详细信息

区域经济一体化是衡量区域开放开发水平的重要标尺。结合辽宁实际,笔者提出了辽宁三大区域互动、一体化发展的内涵,即构建一体化的交通网络、港口群、产业群、城镇群和市场体系。同时对辽宁三大区域互动发展的条件进行了分析,在此基础上,提出了辽宁三大区域互动发展的具体建议。

关键词：省域经济一体化辽宁沿海经济带沈阳经济区、突破辽西北

Status and Development Trend of Evaluation of Post-Marketing Traditional Chinese Medicines in China

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World Journal of Integrated Traditional and Western Medicine 2020年第6期6卷 15-22页

作者： WEI Rui-li wang zhi-fei XIE Yan-ming Institute of Basic Research on Clinical Medicine China Academy of Chinese Medical SciencesBeijing 100700China

Evaluation of traditional Chinese medicines after the market has achieved fruitful results after years of *** real-world research concept has been first proposed by Chief Researcher Xie Yanming in 2010 and to 2020 with the approval of the National Medical Products Administration to use real-world evidence to support drug development and review in ***-world data application and transformation continue to cause heated discussions in the ***-world research concepts have been added new motivation into the evaluation of Chinese medicines after they are *** development of the Chinese patent medicine industry is facing unprecedented opportunities and challenges.

关键词： Evaluation of traditional Chinese medicines after marketing Real world research Clinical safety evaluation Pharmacovigilance