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Metal complexes of a novel bis-β-diketone-type ligand and its copper(Ⅱ) complexes of two-photon biological imaging

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Science China Chemistry 2012年第3期55卷 334-340页

作者： ZHOU ShuangSheng xue xuan JIANG Bo TIAN YuPeng Anhui Engineering Research Center of Modernized Chinese Medicine Department of PharmacyAnhui University of Traditional Chinese MedicineHefei 230031China Key Laboratory of Functional Inorganic Materials Chemistry of Anhui Province Department of ChemistryAnhui UniversityHefei 230039China State Key Laboratory of Crystal Materials Shandong UniversityJinan 502100China

A curcumin derivative ligand,1,7-bis(3-methoxyl-4-acetoxyl)phenyl-1,6-heptadiene-3,5-diketone (diacetylcurcumin,abbreviated as HL),and its Cu and Ni complexes have been synthesized and fully characterized by elemental analyses,IR,1 HNMR and molar *** resulting complexes exhibit two-photon excited fluorescence (TPEF) in DMF,and have been proven to be potentially useful for two-photon microscopy imaging in living *** addition,cytotoxicity tests showed that the low-micromolar concentrations of ML 2 did not cause significant reduction in cell viability over a period of at least 24 h and should be safe for further biological studies.

关键词： diacetylcurcumin complexes two-photon fluorescence cell imaging

AN IMPROVED NUMERICAL METHOD FOR CALCULATIONS IN WAVE KINEMATICS

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Journal of Hydrodynamics 2009年第6期21卷 826-834页

作者： SUN Yi-yan LIU Shu-xue LI Jin-xuan State Kay Laboratory of Coastal and Offshore Engineering Dalian University of Technology Dalian 116024

The prediction of wave kinematics is a necessary basis for ocean engineering design. In this article, an improved method to calculate the wave kinematics especially in the crest region is presented. This method is based on the local approximation method. According to one measured wave surface, the proposed solution focuses on a Fourier series expansion in a somewhat larger segment of the wave surface record. The horizontal and vertical kinematics under the wave crest can be directly predicted. Good agreement between the numerical results and the theoretical Stokes waves verifies the validity of the numerical model. The effectiveness of the numerical method is also proved by the calculation of the wave kinematics of the laboratory focused wave groups.

关键词： Fourier series expansion wave kinematics focused wave

CAN Catalyzed Preparation of β-Enamino Ketones from Amines and Acetylacetone

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Chinese Chemical Letters 2006年第12期17卷 1566-1568页

作者： Zheng DUAN Ting LI xue Jie xuan Yang Jie WU Department of Chemistry The Key Lab of Chemical Biology and Organic Chemistry of Henan Province The Key and Open Lab of Applied Chemistry of Henan Universities Zhengzhou University Zhengzhou 450052

A variety of β-enamino ketones were synthesized in high to excellent yields by reacting acetylacetone with amines in the presence of a catalytic amount of cerium（IV） ammonium nitrate （CAN） under ultrasonic irradi... 详细信息

关键词： CAN catalyzed β-enamino ketone ultrasound.

Variations in aeolian landform patterns in the Gonghe Basin over the last 30 years

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Journal of Mountain Science 2021年第8期18卷 2034-2047页

作者： QI Yu-han PAN Mei-hui HAO Ze-wen YANG An-na xue Wen-xuan College of Geography and Environment Science Northwest Normal UniversityLanzhou730070China

Wind erosion,or the transportation and deposition of sand into desert dunes and aeolian loess,is one of the most important aeolian *** progression of aeolian landforms expands arid and barren landscapes,leading to the degradation of adjacent *** Gonghe Basin,as a typical plateau with abundant sand sources,is highly sensitive to changes in the local climate *** order to quantify the spatial-temporal variations in the aeolian landforms in the Gonghe Basin,we conducted field surveys and also analyzed twelve remote sensing(Landsat5 TM and Landsat8 OLI)images that sample the Gonghe Basin from 1989 to *** the Gonghe Basin,we identified aeolian landforms such as climbing dunes on the windward slopes of the foothills,checkerboard dunes in the southeastern part of the basin,flat dunes,parabolic dunes and crescent dunes on the east and west sides of Longyangxia Reservoir,shrubby sandbanks on the valley slope in Shazhuyu,Tanggemu,and Indel,and sandy thickets at the bottom of the valley near the Dalian Sea,the Longyangxia Reservoir,and the tributaries of the Yellow *** 1989 to 2005,the area of the aeolian regions expanded by 816.7 km2,with an annual conversion rate of 0.05%.From 2015 to 2019,the area of the aeolian regions shrunk by 2411.9 km2,with an annual conversion rate of−0.15%.The number and size of the fixed and semi-fixed dunes(*** shrubby sandbanks on the valley slope and the sandy thickets at the bottom of the valley)were more stable than those of the mobile dunes(*** checkerboard dunes,the flat dunes,the crescent dunes,the parabolic dunes,and the climbing dunes).The fixed and semi-fixed dunes were arranged in an irregular ring shape,and the location of the center of gravity of this ring did not change significantly from 1989 to 2019;in this time,the mobile dunes migrated to the northwest.

关键词： Gonghe Basin Spatial-temporal variation Aeolian processes Remote sensing interpretation

Design of Waveguide Integrated Ge-Quantum-Well Electro-Absorption Modulators

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Chinese Physics Letters 2011年第1期28卷 102-105页

作者： ZHAO Hong-Wei HU Wei-xuan xue Chun-Lai CHENG Bu-Wen WANG Qi-Ming State Key Laboratory of Integrated Optoelectronics Institute of Semiconductors Chinese Academy of Sciences Beijing 100083

We present two designs for a waveguide Oe-quantum-well electro-absorption modulator. In our designs, the strip SOI waveguides are butt-coupled and evanescent-coupled to the modulator, respectively. The proposed Gequantum-weB electro-absorption modulator is based on quantum-confined Stark effect （QCSE）, having a 3-dB bandwidth above 50GHz, as well as a low switching power （around 60fJ/bit at 1435nm）. In the butt-coupled design, the optimized extinction ratio is up to 11.4 dB, while the insertion loss is only 6. 74 dB. For the second one, which utilizes evanescent coupling, the extinction ratio and insertion loss are 9.18 dB and 6. 72 dB, respectively.

关键词： Absorption Wells Design Losses

Investigation on performance of a solar thermophotovoltaic system

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Science China(Technological Sciences) 2008年第12期51卷 2285-2294页

作者： CHEN xue, xuan YiMin & HAN YuGe School of Power Engineering, Nanjing University of Science & Technology, Nanjing 210094, China School of Power Engineering Nanjing University of Science & Technology Nanjing China

In the light of the thermo-electric conversion principle, a model for predicting the performance of a solar thermophotovoltaic system is presented. The temperature distributions of the emitter for different concentrator ratios are numerically computed and the influence of the concentrator ratio on the system performance is analyzed. Numerical results show that the emitter temperature and the system efficiency increase with increase of the concentrator ratio. The effects of some other factors such as the spectral filter, cell temperature, and the reflectivity of the top and bottom surfaces of the emitter on the conversion performance of the STPV system are discussed.

关键词： STPV emitter temperature system efficiency

Novel Bis-β-diketone-type Ligand and Its Copper and Zinc Complexes for Two-photon Biological Imaging

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Chemical Research in Chinese Universities 2012年第4期28卷 647-651页

作者： ZHOU Shuang-sheng xue xuan WEI Dong JIANG Bo WANG Jia-feng LU Cheng-hua Anhui Engineering Research Center of Modernized Chinese Medicine Department of PharmacyAnhui University of Traditional Chinese MedicineHefei 230031P.R.China

A curcumin derivative ligand,1,7-bis（3-methoxyl-4-oxyethylacetate）phenyl-1,6-heptadiene-3,5-diketone（diethyl acetatecurcumin,abbreviated as HL）,and its Cu（II） and Zn（II） complexes have been synthesized and characterized by elemental analyses,infrared（IR）,1H NMR and molar *** experimental results show that the resulting complexes bear strong two-photon excited fluorescence（TPEF） in N,N-dimethyformamide solvent,which has been proven to be potentially useful for two-photon microscopy imaging in living *** addition,cytotoxicity tests show that the low-micromolar concentrations of metal-ligand complex（ML2） did not cause significant reduction in cell viability over a period of,at least,24 h and should be safe for further biological studies.

关键词： Diethyl acetatecurcumin Photophysical property Cell imaging

The Finding and Phylogenetic Evolution Analysis of Bovine Piroplasms in the Rasǒn Area of North Korea

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Journal of Integrative Agriculture 2013年第10期12卷 1847-1854页

作者： JIA Li-jun ZHANG Shou-fa CAO Shi-nuo QIAN Nian-chao YU Long-zheng xuan xue-nan Laboratory of Veterinary Microbiology Department of Veterinary MedicineYanbian University National Research Center for Protozoan Diseases Obihiro University of Agriculture and Veterinary MedicineInada-choObihiroHokkaido080-8555Japan

The objective of this study was to investigate the epidemiology of bovine Piroplasms infections in the Rasǒn area of North *** survey was carried out by light microscopic examination of Giemsa-stained blood smears,PCR,and phylogenetic evolution analysis of 128 blood samples collected from the Rasǒn *** results showed that the infection rates of the small and large parasites were about 2.5 and 1.5% on average,respectively,in all Theileria sergenti and Babesia ovatapositive blood smears by microscopic examination of blood *** detection rate of *** Giemsa-stained smears was 43.75%,while that with PCR was 67.97%.The detection rate of *** Giemsa-stained smears was 49.21%,while that with PCR was 71.88%.The sequence and phylogenetic analysis of DNA showed 98.84% homology between the 18S rRNA gene sequences of *** isolates from North Korean and that of Yanbian state from China,indicating the closest genetic relationship between both of ***,100% homology was shown between the 18S rRNA gene sequence of *** isolates from North Korea and the published sequence AY081192 of GenBank,indicating the closest genetic relationship between both of *** survey confirmed that Ras n is the endemic area of *** and *** in North Korea.

关键词： Rasǒn area of North Korea bovine Piroplasms phylogenetic trees

Performance of Sewage Sludge Treatment and Electricity Generation by Different Configuration Microbial Fuel Cells

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Journal of Harbin Institute of Technology(New Series) 2013年第4期20卷 1-6页

作者： Jun-Qiu Jiang Kun Wang xue-xuan Peng Qing-Liang Zhao Yun-Shu Zhang Xiu-Dong Zhou Dept.of Municipal and Environmental & Engineering Harbin Institute of Technology Institute of Fuzhou Electric Power Design

This paper compared the degradation efficiency of sludge organic matters and electric-production by two typical microbial fuel cells——dual-chamber microbial fuel cell(DMFC)and single chamber air cathode microbial fuel cell(SAMFC),and the variations of sludge protein,polysaccharide and ammonia nitrogen within the systems were also *** results showed that the concentration of sludge soluble chemical oxygen demand,protein and carbohydrate of DMFC are higher than these of SAMFC during the systems operation,while DMFC can achieve a better ammonia nitrogen removal than *** the same operation condition,the stable voltage output of DMFC and SAMFC is 0.61 V and 0.37 V;the maximum power density of DMFC and SAMFC is 2.79 W/m3and 1.25 W/m3;TCOD removal efficiency of DMFC and SAMFC is 34.14%and 28.63%for 12 d,***,DMFC has a higher coulomb efficiency than SAMFC,but both are less than5%.The results showed that DMFC present a better performance on sludge degradation and electric-production.

关键词： sewage sludge dual-chamber microbial fuel cell(DMFC) single chamber air cathode microbial fuel cell(SAMFC) degradation electricity production