检索结果-南通市图书馆

Preparation and characterization of Fe_2O_3-CeO_2-TiO_2/γ-Al_2O_3 catalyst for degradation dye wastewater

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2006年第6期18卷 1189-1192页

作者： LIU Yan sun De-zhi cheng lin LI Yan-ping School of Municipal and Environmental Engineering Harbin Institute of Technology Harbin 150090 China

In order to develop a catalyst with high activity for catalytic wet oxidation （CWO） process at room temperature and atmospheric pressure, Fe2O3-CeO2-TiO2/γ-Al2O3 catalyst was prepared by consecutive impregnation method and the prepared parameters were optimized. The structure of the catalyst was characterized by BET, XRF, SEM and XPS technologies, and the actual wastewater was used to investigate the catalytic activity of Fe2O3-CeO2-TiO2/γ-Al2O3 in CWO process. The experimental results showed that the prepared catalyst exhibited good catalytic activity when the doping amount of Ti was 1.0 wt% （the weight ratio of Ti to carriers）, and the middle product, Fe2O3-CeO2-TiO2/γ-Al2O3, was calcined in 450℃ for 2 h. The CWO experiment for treating actual dye wastewater indicated that the COD, color and TOC of actual wastewater were decreased by 62.23%, 50.12% and 41.26% in 3 h, respectively, and the ratio of BOD5/COD was increased from 0.19 to 0.30.

关键词： catalytic wet oxidation (CWO) Fe2O3-CeO2-TiO2/γ-Al2O3 catalyst dye wastewater treatment

Enhancement of Two-photon Absorption by Ce^(3+) Sensitization in Organic Dyes

在线全文

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2007年第5期23卷 571-573页

作者： LI Jian-fu sun cheng-lin ZHOU Hai-ling XU Li-hua YANG Qing-xin JIANG Zhan-kui Department of Physics Linyi Normal University Linyi 276005 P. R. China College of Physics Jilin University Changchun 130021 P. R. China Department of Physics Yantai University Yantai 246005 P. R. China

The two-photon absorption（TPA）and TPA-induced frequency upconversion emission properties of the dyes 4-[P-（dicyanoethylamino）crystal]-N-methypyrdinium iodide and the complex of 4-[P-（dicyanoethylamino）crystal]-N-methypyrdinium iodide and Ce（NO3）3 were experimentally *** was found that the TPA cross section for the dye sensitized by Ce3＋ is two factors larger than that of the dye without being sensitized.A three-level system model of the dye molecules was used to analyze the enhancement of TPA by the sensitizer Ce3＋,which indicated that the sensitizer results in the increase of the transition dipole moment from the one-photon allowed excited state（1Bu）to the two-photon allowed excited state（2Ag）.

关键词： Two-photon absorption Frequency upconversion Organic dye

Spectra of linear Polyene Molecule-canthaxanthin

在线全文

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2011年第4期27卷 661-663页

作者： OUYANG Shun-li LI Zuo-wei CHEN Yuan-zheng MEN Zhi-wei WU Nan-nan sun cheng-lin State Key Laboratory of Superhard Materials College of Physics Jilin University Changehun 130012 P. R. China State Key Laboratory of Theoretical and Computational Chemistry Institute of Theoretical Chemistry Jilin University Changehun 130021 P. R. China

Raman spectra and ultraviolet-visible（UV-Vis） absorption spectra of linear polyene molecule-canthaxan-thin in n-hexane are measured and *** addition,the optimized structure of canthaxanthin was calculated via density functional theory（DFT） functional *** decreasing the concentration,Raman scattering cross section （RSCS） of fundamental frequency is extremely high,and the UV-Vis absorption bands become *** results of coherent weakly damped electron-Lattice vibration model were analyzed.

关键词： Raman spectroscopy Ultraviolet-visible absorption spectrum Canthaxanthin

Effect of CC Coherent Vibration on Relative Raman Scattering Cross Sections of All-trans β-Carotene

在线全文

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2010年第4期26卷 608-611页

作者： LI Zhan-long LI Dong-fei sun cheng-lin LI Zuo-wei ZHOU Qiang CAO Jun-sheng GAO Feng-li State Key Laboratory of Superhard Materials Jilin University Changchun 130012 P. R. China College of Physics Jilin Universty Changchun 130021 P. R. China Lab of Excited State Processes Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences Changchun 130033 P R. China State Key Laboratory of lntegrated Optoelectronics College of Electronic Science and Engineering Jilin University Changchun 130012 P R. China

We have determined the Raman scattering cross sections（RSCSs） of fl-carotene for C=C and C-C stretching modes, with the 1444 cm^-1 Raman band of cyclohexane as internal standard, in different solvents at low concentrations by measuring Raman intensity. The results show that RSCSs of β-carotene were 10^6-10^7 times larger than the general RSCSs, we analyzed that this enhancement was caused not only by the resonance Raman effect but also by nonlinear coherent CC vibration in aqueous β-carotene. Moreover, overtone and combinations of it were also observed and their intensities were 10%-20% of those of their fundamentals when β-carotene was dissolved in non-polar solvents, respectively.

关键词： Raman scattering cross section Electron-phonon coupling Coherent vibration

Relationship between Fermi Resonance and Solvent Effects

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 2011年第5期28卷 88-91页

作者： JIANG Xiu-Lan LI Dong-Fei sun cheng-lin LI Zhan-Long YANG Guang ZHOU Mi LI Zuo-Wei GAO Shu-Qin State Key Laboratory of Superhard Materials College of PhysicsJilin UniversityChangchun 130021 School of Science Qingdao Technological UniversityQingdao 266033 College of Physics Jilin UniversityChangchun 130021

We theoretically and experimentally study the relationship between Fermi resonance and solvent effects and investigate the Fermi resonance of p-benzoquinone and cyclopentanone in different solvents and the Fermi resonance of CS_(2)in C_(6)H_(6)at different ***,we investigate the Fermi resonance of C_(6)H_(6)and CCl_(4)in their solution at different *** is found that solvent effects can be utilized to search Fermi resonance parameters such as coupling coefficient and spectral intensity ratio,etc.,on the other hand,the mechanism of solvent effects can be revealed according to Fermi resonance at high pressure.

关键词： Fermi resonance utilized

Treatment of pituitary prolactinoma reverses unresponsiveness to PDE5 inhibitor therapy in men with ED and SHPRL

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Journal of Andrology 2013年第6期15卷 847-849页

作者： Tao Jiang Lei Zheng Xiao-Ming Su Jin-Qiang Peng Dong-cheng sun Quan-lin Li Zhi-Wei Zhang Fa-Peng Wang Hui Jiang Department of Urology First AffiLiated Hospital of Dalian Medical University Dalian 116011 China

Dear Editor, Four patients with erectile dysfunction （ED） induced by pituitary prolactinoma presented to our clinic from 2007 to 2008. The patients had been misdiagnosed nearly 2 years earlier at other hospitals because severe ED was the initial symptom. None of these patients had experi-enced successful and satisfactory intercourse in approximately 2 years despite being treated with numerous medications, including the repeated administration of phosphodiesterase-5 inhibitors （PDE5is）（sildenafil 100 mg and/or tadalafil 20 mg）. However, after successful treatment for pituitary prolactinoma, the response to PDE5is improved dramatically. The four cases are described in this report.

关键词：

警惕空气污染诱发“逆城市化”:基于流动人口城市居留意愿的经验分析

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

华南师范大学学报（社会科学版） 2018年第5期 134-141,192页

作者：孙中伟孙承琳华东理工大学应用社会学研究所华东理工大学社会与公共管理学院

城市空气污染可能会导致流动人口居留意愿下降,进而阻碍城市化进程。基于2014年全国地级市—流动人口匹配数据,分析空气污染与流动人口城市居留意愿的关联,发现:雾霾与流动人口的城市长期居留意愿负相关,年龄越大受雾霾冲击越大;在地区... 详细信息

城市空气污染可能会导致流动人口居留意愿下降,进而阻碍城市化进程。基于2014年全国地级市—流动人口匹配数据,分析空气污染与流动人口城市居留意愿的关联,发现:雾霾与流动人口的城市长期居留意愿负相关,年龄越大受雾霾冲击越大;在地区层面,南方地区和东部沿海省份流动人口的城市居留意愿受雾霾冲击更大;与省内流动者相比,跨省流动者的城市居留意愿受雾霾负面影响更大。此外,南方籍贯者对雾霾容忍度更低,其城市居留意愿受雾霾负面影响更大。上述发现意味着,如果中国城市空气污染不能得到有效遏制,将可能导致大量流动人口离开城市,过早出现"逆城市化"现象,阻碍新型城镇化战略的推进。

关键词：空气污染流动人口居留意愿逆城市化雾霾

DEVELOPMENT OF CATALYSTS FOR SYNTHESIZING DIMETHYL ETHER FROM SYNTHESIS GAS

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 1996年第4期 287-295页

作者： SHI Ren-Min CAI Guang-Yu LIU Zhong-Min sun cheng-lin(Dalian Institute of Chemical Physics, The Chinese Academy of Sciences Dalian, Liaoning 116023)

Atype of Cu-based and solid acid-containing catalyt named SD219series for the direct synthesis of dimethyl ether from synthesis gas was developed They exhibited high aetivities at mild reaction conditions and were smt... 详细信息

关键词： dimethyl ether direct synthesis gas catalyst

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

维、柯、塔女性日常休闲体育的参考特征研究

成都体育学院学报 2008年第11期34卷 20-24页

作者：孙成林新疆喀什师范学院新疆喀什844000

以经济欠发达地区新疆维、柯、塔女性日常休闲体育行为为研究对象,探究维、柯、塔女性日常休闲体育行为的参与特征和制约维、柯、塔女性参与休闲体育的因素,从而透视经济欠发达地区少数民族女性日常休闲体育的现状和参与特点,并在此基... 详细信息

以经济欠发达地区新疆维、柯、塔女性日常休闲体育行为为研究对象,探究维、柯、塔女性日常休闲体育行为的参与特征和制约维、柯、塔女性参与休闲体育的因素,从而透视经济欠发达地区少数民族女性日常休闲体育的现状和参与特点,并在此基础上提出可行性建议。

关键词：休闲体育少数民族女性参与特征