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Suppressing byproduct formation for high selective CO_(2) reduction over optimized Ni/TiO_(2) based catalysts

Journal of Energy Chemistry 2022年第9期31卷 465-478,I0013页

作者： Danyang Li Ruidong Xu Roong Jien Wong xing zhu Dong Tian Lei Jiang Qingjie Guo Hongcun Bai Linan Huang Wen Liu Hua Wang Kongzhai Li Engineering Research Center of Metallurgical Energy Conservation and Emission Reduction Ministry of EducationKunming University of Science and TechnologyKunming 650093YunnanChina School of Chemical and Biomedical Engineering Nanyang Technological UniversitySingapore 637459Singapore State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering Ningxia UniversityYinchuan 750021NingxiaChina Faculty of Metallurgical and Energy Engineering Kunming University of Science and TechnologyKunming 650093YunnanChina

One of the challenges for catalytic CO_(2)reduction is to control product selectivity,and new findings that can modify selectivity would be ***,two kinds of TiO_(2)(homemade and commercial)with the same crystal phase but different surface properties are chosen as supports to prepare Ni-based catalysts for CO_(2)reduction,which show distinctly different product selectivity for CO_(2)reduction to CH_(4) or CO,as well as the CO_(2)*** catalysts based on the homemade TiO_(2)support are highly selective for CH_(4) formation,while the latter ones are about 100%selective for CO formation under the same reaction *** addition,the former ones are much active(more than 3 times)than the latter *** found that the collaborative contribution of Ti^(3+)and Ni^(2+)species and the electronic metal-support interactions effect maybe the main driving force behind for determining the product *** is almost exclusively produced over the catalysts with abundant Ti^(3+)and Ni^(2+)species and greater electronic metal-support interaction,otherwise,it will give priority to CO *** addition of CeO_(2)can reduce the Ni particle size and improve the dispersion of Ni nanoparticles,as well as create more Ti^(3+)species,contributing to the enhancement of CO_(2)conversion,but shows a negligible effect on product ***,the in situ DRIFT experiments and kinetic experiments indicate that the CO route is probably involved in the CO_(2)reduction process over the homemade Ni-CeO_(2)/TiO_(2)-CO catalyst with abundant Ti^(3+)and Ni^(2+)species and a strong electronic transform effect.

关键词： CO_(2)reduction Ni-based catalysts TiO_(2)support Product selectivity Surface and interface properties

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Rare manifestation of familial vitreous amyloidosis caused by Gly103Arg transthyretin

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International Journal of Ophthalmology(English edition) 2023年第7期16卷 1093-1099页

作者： Yan-Bing Feng Yan-Bo Shi Yan-Yan He Zhen-Yi Ma Yi-xing zhu Wen-Qing Weng Department of Ophthalmology Jiaxing Traditional Chinese Medicine Hospital Affiliated to Zhejiang Chinese Medical UniversityJiaxing 314001Zhejiang ProvinceChina Jiaxing Key Laboratory of Diabetic Angiopathy Jiaxing 314001Zhejiang ProvinceChina Central Laboratory of Molecular Medicine Research Center Jiaxing Traditional Chinese Medicine Hospital Affiliated to Zhejiang Chinese Medical UniversityJiaxing 314001Zhejiang ProvinceChina Department of Pathology Jiaxing Traditional Chinese Medicine Hospital Affiliated to Zhejiang Chinese Medical UniversityJiaxing 314001Zhejiang ProvinceChina The Third Affiliated Hospital of Zhejiang Chinese Medical University Hangzhou 310005Zhejiang ProvinceChina

AIM:To identify and analyze the genotype of the patients with special ocular manifestations of familial vitreous amyloidosis(FVA)in a Chinese Han ***:Pars plana vitrectomy(PPV)surgery was performed on a 52-year-old Chinese woman presented with vitreous amyloidosis and progressive visual impairment,without evidence of cardiac,renal,gastrointestinal,central nervous system or peripheral nervous system *** the surgery,the patient presented with a gray-white dense and thick cotton woollike change in the vitreous body,accompanied by complete retinal ***,hard,free and movable yellow-white deposits were observed in the posterior pole and surrounding retina,the vitreous and subretinal deposits were examined by Congo red staining and immunohistochemical pathological examination,and whole exome sequencing was performed on blood samples from the patient and her ***:During the operation,it was discovered that there was a complete detachment of the retina and a significant amount of hard,free-floating yellow-white deposits were observed beneath the posterior pole and surrounding *** is an exceedingly rare ocular *** examination of the vitreous and subretinal deposit specimens revealed positive Congo red staining,as well as elevated vascular endothelial growth factor(VEGF)expression in vascular endothelial cells within the sediment specimens upon immunohistochemical *** patient and her cousin both exhibited a heterozygous mutation in Glyl03Arg within the transthyretin(TTR)gene,resulting in a substitution of glycine(Gly)at position 103 with arginine(Arg).CONCLUSION:FVA may present with various ocular manifestations,but panretinal detachment is a rare *** cases where retinal detachment persists for an extended period of time,amyloid deposits may form under the retina through retinal tears,leading to subretinal deposits that can impede retinal reattachment and negatively impa

关键词： familial vitreous amyloidosis transthyretin gene Gly103Arg vascular endothelial growth factor

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Application of amphoteric polymers in the process of leather post-tanning

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Journal of Leather Science and Engineering 2021年第1期3卷 100-108页

作者： Xuechuan Wang Siwei Sun xing zhu Peiying Guo Xinhua Liu Chunlin Liu Meng Lei College of Bioresources Chemical and Materials Engineering Shaanxi University of Science and TechnologyXi’anShaanxi 710021People’s Republic of China College of Chemistry and Chemical Engineering Shaanxi University of Science and TechnologyXi’anShaanxi 710021People’s Republic of China Institute of Biomass and Functional Materials Xi’anShaanxi 710021People’s Republic of China National Demonstration Center for Experimental Light Chemistry Engineering Education Shaanxi University of Science and TechnologyXi’anShaanxi 710021People’s Republic of China College of Arts and Science Shaanxi University of Science and TechnologyXi’anShaanxi 710021People’s Republic of China

With the characteristics of controllable charge and environmental friendliness,amphoteric polymers can be used in post-tanning process to solve the problems that arise during leather making and are caused by the low absorption rate of single-charge chemicals,incompatibility with new tanning methods,and complex operation *** this review,the structure,performance,and preparation of amphoteric polymers are ***,the charge change of collagen during different tanning and pH treatments is ***,the application and development of amphoteric polymers during the post-tanning process of leather making are *** review has certain guiding significance to the preparation and application of amphoteric polymers for tanning system.

关键词： Amphoteric polymer Leather making Post-tanning Research and application Progress

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Clinical features and follow-up of Chinese patients with symptomatic hypogammaglobulinemia in infancy

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Chinese Medical Journal 2009年第16期122卷 1877-1883页

作者： QIAN Ji-hong zhu Jian-xing zhu Xiao-dong CHEN Tong-xin Department of Pediatrics Xinhua Hospital Shanghai Jiao Tong University School of Medicine Shanghai 200092 China Shanghai Institute for Pediatrics Research Shanghai Jiao Tong University School of Medicine Shanghai 200092 China

Background Hypogammaglobulinemia is common in infant humoral immunodeficiencies and has complicated causes and outcomes. We aimed to determine the clinical manifestations, immunological changes and outcomes of Shanghai infants with hypogammaglobulinemia. Methods Patients under 2 years old, having one or more warning signs of primary immunodeficiency disorders, serum immunoglobulin levels below the lower limit of reference range per age, and with normal numbers for lymphocyte subsets were analyzed and followed up for 2 to 3 years. Results A total of 91 children （male-to-female ratio： 2.25： 1） participated in the study. Initial clinical presentation was recurrent upper respiratory tract infection （46%）, invasive infection （3%）, atopic disease （32%）. IgA reduction （77%） was prevalent; 34% patients had more than one isotype reduced. During follow-up, 51 of 62 patients （82.25%） had immunoglobulins normalized at the age between 12-48 months; these were diagnosed as transient hypogammaglobulinemia of infancy （THI）. Long-term follow-up may reveal a diagnosis for the remaining 11 infants with persistent lower Jmmunoglobulin levels, who did not have antibody titers measured. Earlier onset was correlated with higher rates of normalization. More patients were diagnosed with isolated hypogammaglobulinemia in 2006 compared with the previous 4 years （2002-2005）. Conclusions The awareness of immunodeficiency among pediatricians has been greatly improved. Recurrent otitis media was not a major infection in our patients. THI is a relatively common condition associated with infant hypogammaglobulinemia. In the absence of specific antibody titers, the diagnosis of THI can be confirmed retrospectively with Ig levels normalized in follow-up visits. Therefore, long-term follow-up and frequent re-evaluation of these patients are necessary to distinguish them from true primary immunodeficiency.

关键词： hypogammaglobulinemia immunoglobulin normalization infant primary immune deficiency transient hypogammaglobulinemia of infancy follow-up

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锁固段边坡模型破坏前兆特征

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地球科学 2022年第6期47卷 1957-1968页

作者：朱星唐垚成都理工大学地质灾害防治与地质环境保护国家重点实验室成都610059 成都理工大学计算机与网络安全学院成都610059 成都理工大学环境与土木工程学院成都610059

为探究花岗岩锁固段边坡模型损伤破坏过程中的微震信号能量、频率分布特征及临界慢化现象,开展了花岗岩锁固段边坡模型的破坏试验研究,利用单轴加载系统对不同岩桥角度的花岗岩锁固段边坡模型进行加载,采用应变片、微震(microseismic,MS... 详细信息

为探究花岗岩锁固段边坡模型损伤破坏过程中的微震信号能量、频率分布特征及临界慢化现象,开展了花岗岩锁固段边坡模型的破坏试验研究,利用单轴加载系统对不同岩桥角度的花岗岩锁固段边坡模型进行加载,采用应变片、微震(microseismic,MS)监测系统对其加载全过程进行同步观测.试验结果表明:(1)岩桥角对边坡模型的破坏形式产生影响,当岩桥角为70°和90°时破坏形式以拉张破坏为主;当岩桥角为110°时为拉压混合破坏;当岩桥角为130°时为压剪破坏,前缘蠕滑段为锁固型边坡变形最大的部位.(2)在加载过程中,当存在微小损伤破裂时,主要以高频、低能的微震信号为主,当产生大尺度损伤破裂时会伴随着低频、高能的微震信号.(3)在锁固段边坡模型处于临界破坏状态时会出现明显的临界慢化现象,表现为微震信号的方差、自相关系数产生突增现象,且突增点所对应的时间均达到失稳时间的80%,具有较好的时效性,可将微震信号的方差、自相关系数的突增作为边坡模型的失稳破坏前兆信息.(4)能量比方法与临界慢化理论形成联合预测判据,可克服单一判据的缺点,提高预测的准确性.该研究可为突发型的岩质边坡监测预警提供可用的参考价值.

关键词：锁固段单轴加载累积能量小波变换临界慢化理论岩土工程

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Temperature dependent Raman and photoluminescence of vertical WS2/MoS2 monolayer heterostructures

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Science Bulletin 2017年第1期62卷 16-21页

作者： Zhijian Hu Yanjun Bao Ziwei Li Yongji Gong Rui Feng Yingdong Xiao Xiaochun Wu Zhaohui Zhang xing zhu Pulickel M. Ajayan Zheyu Fang State Key Laboratory for Mesoscopic Physics School of PhysicsPeking UniversityCollaborative Innovation Center of Quantum MatterBeijing 100871China Key Laboratory of Nanoscale Measurement and Standardization National Center for Nanoscience and Technology Beijing 100190China Department of Materials Science and NanoEngineering Rice UniversityHouston7X 77005USA

Heterostructures from two-dimensional transition-metal dichalcogenides MX2 have emerged as a hot topic in recent years due to their various fascinating properties. Here, we investigated the temperature dependent Raman and photoluminescence （PL） spectra in vertical stacked WS2/MoS2 monolayer heterostructures. Our result shows that both E^g and Alg modes of WS2 and MoS2 vary linearly with tem- perature increasing from 300 to 642 K. The PL measurement also reveals strong temperature dependencies of the PL intensity and peak position. The activation energy of the thermal quenching of the PL emission has been found to be equal to 69.6 meV. The temperature dependence of the peak energy well follows the band- gap shrinkage of bulk semiconductor.

关键词： Temperature-dependent Raman spectra Photoluminescence Transition metal dichalcogenides Heterostructures

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Laser Induced Light-Force Interaction in the Optical Near-Field Region

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Chinese Physics Letters 1998年第3期15卷 165-167页

作者： zhu xing LING Yong HUANG Gui-song ZHOU He-tian DAI Yuan-dong WU Ke GAN Zi-zhao Department of Physics and State Key Laboratory for Mesoscopic Physics Peking UniversityBeijing 100871

Laser light can induce many effects on the vicinity of the sample surface due to the proximity effects,such as the field enhancement at the surface of a small conducting particle;plasma exchange effect between the metallic tip and substrate *** have observed a new optical tip-sample interaction:laser induced force as the results of light pressure in the near-field *** the side illumination of a laser light,an additional attractive force was observed between a dielectric tip and various samples of C60,optical glass,YBa_(2)Cu_(3)O_(7-d)(YBCO)thin *** such effect was observed in metallic *** optical binding force is due to the multiple scattering of light between two close *** results are in good agreement with the recent theoretical *** effects of the optical refraction index,thermal expansion of probe tip due to laser radiation are discussed.

关键词： scattering metallic effect

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一类脉冲随机系统的有限时间有界性分析与H_∞控制

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控制理论与应用 2018年第3期35卷 291-298页

作者：姚凤麒朱行行安徽工业大学电气与信息工程学院安徽马鞍山243032

本文研究一类线性脉冲随机系统的有限时间有界性及H_∞控制问题.首先,利用Lyapunov函数和平均脉冲区间条件,建立了系统有限时间均方有界定理;其次,基于H_∞控制理论,获得了保证系统有限时间有界且满足一定的H_∞性能指标的判据;再次,针... 详细信息

本文研究一类线性脉冲随机系统的有限时间有界性及H_∞控制问题.首先,利用Lyapunov函数和平均脉冲区间条件,建立了系统有限时间均方有界定理;其次,基于H_∞控制理论,获得了保证系统有限时间有界且满足一定的H_∞性能指标的判据;再次,针对有限时间H_∞控制问题,给出了状态反馈控制器存在的充分条件.最后,用一个数值例子表明了理论结果的有效性.

关键词：有限时间有界 H∞控制脉冲随机系统平均脉冲区间

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可控气氛箱式渗氮(氮碳共渗)炉自动生产线

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金属热处理 2008年第5期33卷 109-111页

作者：朱星爱协林工业炉工程(北京)有限公司北京102206

对可控气氛箱式渗氮(氮碳共渗)炉自动生产线设计需要注意的问题进行了分析说明,对生产线的组成、箱式渗氮炉结构、供气系统、温度和氮势控制、安全和环境保护、清洗、预氧化等的设计作了说明,并介绍了其在生产应用中的实例。

关键词：可控气氛渗氮(氮碳共渗) 氮势氢传感器

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框架-摇摆墙结构阻尼优化设计方法研究

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振动与冲击 2014年第24期33卷 112-122页

作者：裴星洙王佩江苏科技大学土木工程与建筑学院江苏镇江212003 陕西省建筑设计研究院有限责任公司西安710000

摇摆墙体与主体框架之间存在较大的竖向变形,可于此变形集中部位增设耗能构件,实现保护主体结构的基本损伤机制。提出附加阻尼的框架-摇摆墙结构,并基于等效线性化理论初步计算结构仅附加单一类型阻尼器的阻尼置放量,而后通过定义目标函... 详细信息

摇摆墙体与主体框架之间存在较大的竖向变形,可于此变形集中部位增设耗能构件,实现保护主体结构的基本损伤机制。提出附加阻尼的框架-摇摆墙结构,并基于等效线性化理论初步计算结构仅附加单一类型阻尼器的阻尼置放量,而后通过定义目标函数,确定可使目标函数最小的同时附加粘滞阻尼与金属阻尼的阻尼器布置方式,得到结论如下:1于弯剪型结构,当仅考虑结构加速度控制时,可沿结构总高布置粘滞阻尼器,而需综合考虑结构楼层位移、加速度时及层间位移角时,可于结构2/3处下部安装金属阻尼器,与其上部1/3处安装粘滞阻尼器;2于剪切型结构,当仅考虑结构层间位移角时,可于结构楼层1/2处下部安装金属阻尼器,与其上部1/2处安装粘滞阻尼器,而需综合考虑结构楼层位移、加速度及层间位移角时,则可于结构1/3处下部安装金属阻尼器,与其上部2/3处安装粘滞阻尼器。

关键词：框架-摇摆墙结构抗震设计方法金属阻尼器粘滞阻尼器时程分析

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