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High halogenated nitrobenzene hydrogenation selectivity over nano Ir particles

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Chinese Journal of Chemical Engineering 2017年第3期25卷 306-312页

作者： Lei Ma Jianguo wang hanbing wang Qunfeng Zhang Chunshan Lu Xiaobo He Xiaonian Li Industrial Catalysis Institute of Zhejiang University of Technology State Key Laboratory Breeding Base of Green Chemistry Synthesis TechnologyHangzhou 310032China

The selective hydrogenation of halogenated nitrobenzene over noble metal catalysts(Pd, Pt, and Ir) has attracted much attention owing to its high efficiency and environmental friendliness. However, the effect of size on the catalytic performance varies among different metal catalysts. In this study, sub-nano(<3 nm) Ir and Pd particles were prepared, and their catalytic properties for hydrogenation of halogenated nitrobenzene were *** show that high selectivity(N 99%) was achieved over small Ir nanoparticles, in which the selectivity over the Pd with same size was much lower than that on Ir nanoparticles. Meanwhile, Ir and Pd have different hydrogen consumption rates and reaction rates. Density functional theory calculations showed that p-chloronitrobenzene(CNB) has different adsorption properties on Ir and Pd. The distance between oxygen(cholorine) and Ir is much shorter(longer) than that between oxygen and Pd. The reaction barriers of dechlorination of p-CNB and p-chloroaniline over different Ir models are much larger than those on Pd. Especially,lower coordination of Ir leads to larger barriers of dechlorination reaction. These theoretical results explain the difference between Ir and Pd on hydrogenation of halogenated nitrobenzene.

关键词： Halogenated nitrobenzene Selective hydrogenation Sub-nano lr Density functional

Effect of process parameters on the recrystallization and size control of puerarin using the supercritical fluid antisolvent process

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Asian Journal of Pharmaceutical Sciences 2016年第2期11卷 281-291页

作者： Ying Li Yibin Yu hanbing wang Fengguang Zhao Department of Pharmacy School of MedicineShenzhen UniversityShenzhenChina Division of Life Science&Health Graduate School at ShenzhenTsinghua UniversityShenzhenChina School of Pharmacy Shenyang Pharmaceutical UniversityShenyangChina Research Institute of Joincare Pharmaceutical Group Industry Co.Ltd ShenzhenChina

The purpose of this study was to investigate the influence of the supercritical CO2 processing on the particle size and morphology of puerarin crystals. The process parameters included solvents, temperature, pressures, antisolvent times, addition volumes, antisolvent addition rates and solute concentrations. After being processed, the dramatic reduction of the dimensions and the change of the crystal shape were noticed. Decreasing the antisolvent addition rate, increasing the temperature and the addition volume below 50 ml led to a decrease in size. The new crystal of puerarin generated at the optimal conditions was 30.34 μ*** solvent of methanol and the concentration of 60 mg/ml were found to determine the type and degree of crystallinity of particles. These results showed that this process has the potential to produce a drug recrystallization product with newly generated crystal forms and the size of drug particles could be controlled through the tuning of various experimental conditions.

关键词： Puerarin Microparticles Supercritical fluid GAS Crystallization Particle size

T-type calcium channel expression in cultured human neuroblastoma cells

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Neural Regeneration Research 2011年第31期6卷 2410-2413页

作者： Xianjie Wen Shiyuan Xu Lingling wang Hua Liang Chengxiang Yang hanbing wang Hongzhen Liu Department of Anesthesiology Zhujiang Hospital of Southern Medical University Guangzhou 510282 Guangdong Province China Department of Anesthesiology Foshan Hospital of Sun Yat-sen University ＆ First People＇s Hospital of Foshan Foshan 528000 Guangdong Province China

Human neuroblastoma cells （SH-SY5Y） have similar structures and functions as neural cells and have been frequently used for cell culture studies of neural cell *** studies have revealed L-and N-type calcium channels in SH-SY5Y ***,the distribution of the low-voltage activated calcium channel （namely called T-type calcium channel,including Cav3.1,Cav3.2,and Cav3.3） in SH-SY5Y cells remains poorly *** present study detected mRNA and protein expres-sion of the T-type calcium channel （Cav3.1,Cav3.2,and Cav3.3） in cultured SH-SY5Y cells using real-time polymerase chain reaction （PCR） and western blot *** revealed mRNA and protein expression from all three T-type calcium channel subtypes in SH-SY5Y ***,Cav3.1 was the predominant T-type calcium channel subtype in SH-SY5Y cells.

关键词： calcium ion channel calcium signaling cell culture neural regeneration real-time PCR T-type calcium channel western blot neural regeneration

Righteous Dopefiend:公共人类学摄影民族志

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民族学刊 2021年第4期12卷 97-100,121页

作者：王晗冰中央民族大学北京100081

Righteous Dopefiend是一本对海洛因成瘾的流浪汉群体进行研究的公共人类学摄影民族志代表作,作者Philippe Bourgois和Jeff Schonberg历经12年,来展现和描绘城市边缘中人们“视而不见”但却有感情、讲义气的流浪汉群体,立体而鲜活的呈... 详细信息

Righteous Dopefiend是一本对海洛因成瘾的流浪汉群体进行研究的公共人类学摄影民族志代表作,作者Philippe Bourgois和Jeff Schonberg历经12年,来展现和描绘城市边缘中人们“视而不见”但却有感情、讲义气的流浪汉群体,立体而鲜活的呈现他们的苦难和挣扎。本文从民族志研究和抱团取暖的群体,“灰色地带”中的摄影民族志、个人生命历程的书写等方面对本书进行评述。

关键词：海洛因成瘾摄影民族志公共人类学毒品人类学

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论民事执行改革研究中的若干理论偏误与缺失

广东社会科学 2006年第6期 183-188页

作者：汪汉斌南京师范大学法学院

当前民事执行改革研究中的若干理论偏误与缺失值得反思与警惕:民事执行权的性质定位没有从宪法规范出发并在宪政语境中思考问题,研究方法难免有盲人摸象、以偏概全之虞;“执行当事人主义”的提法无论在理论逻辑还是在实践逻辑上都难以自... 详细信息

当前民事执行改革研究中的若干理论偏误与缺失值得反思与警惕:民事执行权的性质定位没有从宪法规范出发并在宪政语境中思考问题,研究方法难免有盲人摸象、以偏概全之虞;“执行当事人主义”的提法无论在理论逻辑还是在实践逻辑上都难以自洽,可能导致生效裁判的执行难上加难;而“民事执行程序的人性化”,本可以用来弱化现行执行程序中的“职权主义”,克服其可能产生的负面影响,民诉法学界却无人论及,形成理论缺失。

关键词：执行权的性质执行当事人主义执行程序人性化

3-9 Calculations about the Production Rate of H-and Li-like Uranium for DR Experiments on HIAF

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IMP & HIRFL Annual Report 2016年第1期 84-85页

作者： wang Shuxing Wen Weiqiang Huang Zhongkui wang hanbing Xuxin Ma Xinwen Zhu Linfan Department of Modern Physics University of Science and Technology of ChinaHeifei 230026China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China

A new project,High Intensity heavy ion Accelerator Facility(HIAF)is under design now in China,which will provide stable and unstable ion beams with high energy,high intensity and high quality[1].Dielectronic recombination(DR)experiments of very heavy highly charged ions and radioactive ions are considered as the main motivation for atomic physics at HIAF[2].The spectroscopy of very heavy H-and Li-like ions is a powerful tool to test quantum electrodynamics(QED)in strong fields and to investigate the generalized Breit interaction(GBI)[3,4].In addition,the isotope shift and the hyperfine splitting can be researched with DR experiments of Li-like ions.

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近断层地震动对短肢剪力墙高层结构地震反应的影响

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地震工程与工程振动 2008年第6期28卷 106-115页

作者：杨迪雄王汉兵李刚大连理工大学工程力学系工业装备结构分析国家重点实验室辽宁大连116023

近断层地震动具有独特的上盘效应、破裂方向性效应和速度脉冲特征。本文分组考察具有这些运动特征的地震动对短肢剪力墙高层建筑结构地震反应的影响。选择台湾集集近断层地震动记录作为地震动输入,利用ANSYS软件对一幢12层短肢剪力墙结... 详细信息

近断层地震动具有独特的上盘效应、破裂方向性效应和速度脉冲特征。本文分组考察具有这些运动特征的地震动对短肢剪力墙高层建筑结构地震反应的影响。选择台湾集集近断层地震动记录作为地震动输入,利用ANSYS软件对一幢12层短肢剪力墙结构建立空间杆件-壳元组合有限元模型,进行弹塑性时程分析。计算结果表明,近断层地震动上盘效应和破裂方向性效应明显增大短肢剪力墙结构体系的地震反应,短肢剪力墙高层结构的最大层间位移角发生在中部第5层,为0.98%,说明该结构已经达到中等破坏状态;脉冲型地震动效应与结构周期长短密切相关,对长周期结构脉冲效应显著。

关键词：近断层地震动运动特征短肢剪力墙结构弹塑性时程分析

LIBS结合自由定标法对钢液中多元素成分定量分析

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激光杂志 2017年第11期38卷 38-41页

作者：马翠红王汉炳华北理工大学电气工程学院河北唐山063210

应用激光诱导击穿光谱技术定性分析钢液中多元素的成分,并且结合自由定标法定量分析各元素的含量。为使检测结果更准确,加入一个平面镜反射装置,来减小自吸收现象。采集标准钢液样品中各元素的光谱,提取光谱强度,结合自由定标法建立样... 详细信息

应用激光诱导击穿光谱技术定性分析钢液中多元素的成分,并且结合自由定标法定量分析各元素的含量。为使检测结果更准确,加入一个平面镜反射装置,来减小自吸收现象。采集标准钢液样品中各元素的光谱,提取光谱强度,结合自由定标法建立样品中各元素的波尔兹曼平面,通过计算得到样品中各元素的含量,其中Mn元素的含量相对误差为22.178%,Fe元素含量相对误差为2.900%。实验表明实验值可以表征样品值,LIBS结合自由定标法可以对钢液中多元素成分进行定量分析。

关键词：激光诱导击穿光谱技术钢液成分自由定标法定量分析

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能力谱方法的混沌动力学分析

世界地震工程 2008年第2期24卷 42-49页

作者：杨迪雄李刚王汉兵大连理工大学工程力学系工业装备结构分析国家重点实验室大连116023

能力谱方法是一种简化的结构抗震非线性分析方法,ATC-40等文件采用它来预测结构的力和位移需求。然而,ATC-40能力谱方法对一些非弹性系统的求解出现不收敛现象。现利用混沌动力学理论对ATC-40能力谱方法的收敛问题进行分析。ATC-40能力... 详细信息

能力谱方法是一种简化的结构抗震非线性分析方法,ATC-40等文件采用它来预测结构的力和位移需求。然而,ATC-40能力谱方法对一些非弹性系统的求解出现不收敛现象。现利用混沌动力学理论对ATC-40能力谱方法的收敛问题进行分析。ATC-40能力谱方法等效线性化迭代求解非弹性体系的位移,形成一个离散非线性映射或差分方程。对于这一离散动力系统,随着控制参数的变化,给出了动力系统迭代解的分岔图,展示了解的周期振荡、倍周期分岔、混沌等复杂动力学现象,阐明了能力谱方法迭代过程周期振荡解产生的原因。计算了动力系统的Lyapunov指数,从而判定系统解的运动状态和稳定性。最后指出了实现能力谱法等迭代算法收敛振荡控制的途径———混沌控制。

关键词：能力谱方法收敛性混沌动力学周期振荡分岔图 Lyapunov指数