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Chinese Chemical Letters 2011年第6期22卷 643-646页

作者： xiu juan Feng Mei Yan Xin Zhang Ming Bao State Key Laboratory of Fine Chemicals Dalian University of TechnologyDalian 116012China School Environmental Science & Technology Dalian University of TechnologyDalian 116023China

A new method for the preparation of SBA-15-supported palladium catalyst for Heck reaction in supercritical carbon dioxide was *** newly formed SBA-15-supported palladium catalyst（Ph-SBA-15-PPh_3-Pd） exhibited high catalytic activity for the Heck reaction of 4-nitrobromobenzene with methyl *** catalyst can be reused several times without a loss of activity.

关键词： SBA-15-supported palladium catalyst Heck reaction Supercritical carbon dioxide

Noncommutative Multi-Solitons in a Modified Chiral Model in 2+1 Dimensions

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Communications in Mathematical Research 2009年第4期25卷 349-360页

作者： ZHU xiu-juan School of Mathematical Sciences Yangzhou University Yangzhou Jiangsu 225002

Multi-soliton configurations of a Moyal-type noncommutative deformed modified 2＋1 chiral model have been constructed by dressing method several years ago. These configurations have no-scattering property. By making a second-order pole in the dressing ansatz, two-soliton configurations with genuine soliton-soliton interaction were constructed after that. We go on in this paper to construct a large family of multi-soliton configurations with scattering property by using the noncom- mutative extension of B/icklund transformations defined by Dai and Terng in a recent paper

关键词： noncommutative star product Moyal-Weyl map Baicklund transformation

Biodegradation of Pentachloronitrobenzene by Labrys portucalensis pcnb-21 Isolated from Polluted Soil

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Pedosphere 2011年第1期21卷 31-36页

作者： LI Rong zheng Jin-Wei NI Bin CHEN Kai YANG xiu-juan LI Shun-Peng JIANG Jian-Dong Key Laboratory of Microbiological Engineering of Agricultural Environment Ministry of Agriculture College of Life Sciences Nanjing Agricultural University Nanjing 210095 (China)

A bacterial strain, pcnb-21, capable of degrading pentaehloronitrobenzene （PCNB） under aerobic and anoxic conditions, was isolated from a long-term PCNB-polluted soil by an enrichment culture technique and identified as Labrys portucalensis based upon its morphological, physiological and biochemical properties, as well as 16S rRNA gene sequence analysis. Effects of different factors, such as temperature and pH, on PCNB biodegradation were studied. Strain pcnb-21 efficiently degraded PCNB at temperatures from 20 to 30 ℃ and initial pH values from 4 to 7, which might be the first time that a Labrys strain was found capable of eflClciently degrading PC1NB. The degradation of PCNB was affected by oxygen, and the degradation decreased with increasing aeration. Exogenous electron donors such as glucose, lactic acid and succinic acid promoted the biodegradation of PCNB, while electron acceptors such as sodium nitrite, sodium sulfate, sodium nitrate and sodium sulfate inhibited PCNB biodegradation. The degradation of PCNB in sterile and non-sterile soils by a green fluorescent protein （GFP）-labeled strain, pcnb-21-gfp, was also studied. Cells of pcnb-21-gfp efficiently degraded 100 mg kg-1 PCNB in sterile and non-sterile soils and could not be detected after 42 days. Strain pcnb-21 might be useful in bioremediating PCNB-polluted soils and environment.

关键词： aeration bacterial strain electron acceptors electron donors sterile soil

Silicon-erbium ytterbium silicate nanowire waveguides with optimized optical gain

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Frontiers of physics 2017年第1期12卷 57-63页

作者： Xiao-Xia Wang Wei-Hao zheng Qing-Lin Zhang Xiao-Li Zhu Hong Zhou xiu-juan Zhuang An-Lian Pan Xiang-Feng Duan Key Laboratory for Micro-Nano Physics and Technology of Hunan Province School of Physics and Electronic Science and State Key Laboratory of Chemo/Biosensing and Chemometrics Hunan University Changsha 410082 China Department of Chemistry and Biochemistry University of California Los Angeles CA 90095 USA

Single-crystal erbium silicate nanowires have attracted considerable attention because of their high optical gain. In this work, we report the controlled synthesis of silicon-erbium ytterbium silicate core- shell nanowires and fine-tuning the erbium mole fraction in the shell from x = 0.3 to x = 1.0, which corresponds to changing the erbium concentration from 4.8 ×10^21 to 1.6 ×10^22 cm^-3. By controlling and properly optimizing the composition of erbium and ytterbium in the nanowires, we can effectively suppress upeonversion photoluminescence while simultaneously enhancing near-infrared emission. The composition-optimized nanowires have very long photoluminescence lifetimes and large emission cross- sections, which contribute to the high optical gain that we observed. We suspended these concentration- optimized nanowires in the air to measure and analyze their propagation loss and optical gain in the near-infrared communication band. Through systematic measurements using wires with different core sizes, we obtained a maximum net gain of 20 ± 8 dB·mm^-1, which occurs at a wavelength of 1534 nm, for a nanowire with a diameter of 600 nm and a silicon core diameter of 300 nm.

关键词： erbium ytterbium silicate nanowire erbium concentration gain

Relative hepatic weight using body weight may be not accurate

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World Journal of Pediatrics 2017年第2期13卷 186-187页

作者： xiu-juan Yang Shao-Qing Ni Department of Pediatrics The First Affiliated Hospital of Zhejiang Chinese Medical UniversityHangzhouChina The National Clinical Trial Institute Children's HospitalZhejiang University School of MedicineHangzhou 310020China

We read the paper entitled'A high-fat highenergy diet influences hepatic CYP3A expression and activity in low-birth-weight developing female rats'published in the recent issue of the Journal.[1]The authors investigated the effects of a high-fat,high-energy diet(HFHE diet)on the hepatic expression of CYP3A in low-birth-weight developing female *** they concluded that an HFHE diet can result in alterations of CYP3A expression in a developmental low birth-weight rat model.

关键词： Relative CYP3A Birth-weight

Carbon and Nitrogen Contents in Typical Plants and Soil Profiles in Yanqi Basin of Northwest China

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Journal of Integrative Agriculture 2014年第3期13卷 648-656页

作者： ZHANG juan WANG xiu-jun WANG Jia-ping WANG Wei-xia State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences University of Chinese Academy of Sciences Earth System Science Interdisciplinary Center University of Maryland College ParkMD 20740 USA

Carbon and nitrogen are the most important elements in the terrestrial ecosystem. Studying carbon and nitrogen distributions in plant and soil is important for our understanding of the ecosystem dynamics and carbon cycle on arid lands. A study was conducted in a typical arid area, the Yanqi Basin, Northwest China. Carbon and nitrogen distributions in plant tissues and soil profiles were determined at 21 sites with typical native plants and crops. Our results indicated that carbon content was similar between crops and native plants, and the average carbon contents in aboveground （42.4%） and belowground （42.8%） tissues were almost the same. Average nitrogen contents in crops were nearly the same （~0.7%） in aboveground and belowground tissues whereas mean nitrogen content was approximately 100% higher in aboveground （2.2%） than in belowground （1.2%） tissues for native species. Soil organic carbon （SOC） and total nitrogen （TN） in cropland （9.4 and 0.9 g kg^-1） were significantly higher than those in native land （6.2 and 0.7 g kg^-1）. Multiple regression analyses indicated that carbon content in belowground tissue and nitrogen content in aboveground tissue were key factors connecting plant and soil in native land. However, there was no significant relationship for carbon or nitrogen between soil and crop, which might reflect human disturbance, such as plowing and applications of various organic materials.

关键词： carbon nitrogen native land cropland arid land

Efficacy and safety of subthreshold micropulse laser in the treatment of acute central serous chorioretinopathy

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International Journal of Ophthalmology(English edition) 2023年第6期16卷 921-927页

作者： Jian-Jie Guo xiu-juan Li Jing-Jing Wan Department of Ophthalmology the First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450000Henan ProvinceChina

·AIM:To analyze the efficacy and safety of subthreshold micropulse laser(SML)in the treatment of acute central serous chorioretinopathy(CSC).·METHODS:This is a retrospective case analysis *** 58 eyes of 58 patients were enrolled,and they were divided into different *** 39 patients were treated with SML(SML group)and 19 patients were only observed(observation group).The follow-up period was 3mo after *** best corrected visual acuity(BCVA),central retinal thickness(CRT),superficial retinal vascular density(SRVD),deep retinal vascular density(DRVD),the superficial and deep foveal avascular zone(FAZ)area,retinal light sensitivity(RLS),perfusion area of choroidal capillary layer(CCL),subfoveal choroidal thickness(SFCT)and fundus autofluorescence(FAF)were investigated.·RESULTS:The BCVA,CRT,SRVD,DRVD,the superficial and deep FAZ area,RLS,SFCT of SML group were significantly improved at 3mo(all P0.05).At the last follow-up,the BCVA and RLS in the SML group were better than those in the observation group,and CRT was lower,SRVD and DRVD,perfusion area of CCL were larger(all P<0.05).On FAF,no change of treatment spots was found after *** structural laser damage was observed on optical coherence tomography(OCT)and optical coherence tomography angiography(OCTA),and no choroidal neovascularization was observed.·CONCLUSION:SML treatment of acute CSC can improve BCVA,RLS,and perfusion area of CCL,reduce CRT,increase SRVD and DRVD,and is safe.

关键词： central serous chorioretinopathy subthreshold micropulse laser optical coherence tomography angiography microperimetry

Mechanism study of electrochemical oxidation in the terylene diaphragm cell

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Journal of Environmental Sciences 2006年第1期18卷 33-39页

作者： YU xiu-juan WANG Hui SUN De-zhi SONG Lai-wen WU Lan Department of Environmental Science and Engineering Heilongjiang University Harbin 150086 China School of Municipal and Environmental Engineering Harbin Institute of Technology Harbin 150090 China

By using a self-made carbon/polytetrafluoroethylene （C/PTFE） O2-fed as cathode and Ti/IrO2/RuO2 as anode, the effects of electrochemical oxidation of phenol and the coal-gas wastewater containing phenol were studied. The terylene diaphragm which kept pH〉12 in cathodic compartment and pH〈1 in the anodic compartment was selected in the experiment in comparison with the other types of diaphragm. Furthermore, hydroxyl radical （HO·） was determined in the cathodic compartment of the diaphragm cell by electron spin resonance spectrum（ESR） and the fluorescence spectra. Compared with pH, the accumulated HzO2 and the COD removal of the no-diaphragm cell, the mechanism of electrochemical oxidation in the terylene diaphragm cell was supposed. The degradation of phenol was supposed to be cooperative oxidation by direct or indirect electrochemical oxidation at the anode and H2O2, HO· produced by oxygen reduction at the cathode. The mineralization of phenol in the diaphragm cell was better than that in the no-diaphragm cell. When the coal-gas wastewater was treated by the electrolysis system with terylene diaphragm, the average removal efficiency of the volatile phenol and COD were 100% and 79.6%, respectively.

关键词： electrochemical oxidation C/PTFE O2-fed cathode terylene diaphragm hydroxyl radical

Effects of basicity and MgO content on the viscosity of the SiO_2-CaO-MgO-9wt%Al_2O_3 slag system

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International Journal of Minerals,Metallurgy and Materials 2014年第4期21卷 353-362页

作者： Yun-ming Gao Shao-bo Wang Chuan Hong xiu-juan Ma Fu Yang Key Laboratory for Ferrous Metallurgy and Resources Utilization of the Ministry of Education Wuhan University of Science and Technology

The effects of basicity and MgO content on the viscosity of SiO2-CaO-MgO-9wt%Al2O3 slags with basicity from 0.4 to 1.0 and MgO content from 13wt%to 19wt%were investigated using the rotating cylinder method. A correlation between the viscosity and the slag structure was determined by Fourier transform infrared （FTIR） spectroscopy. It is indicated that the complex network structure of the slag melt is depolymerized into simpler network units with increasing basicity or MgO content, resulting in a continuous decrease in viscosity of the slag. The viscosity is strongly dependent on the combined action of basic oxide components in the slag. Under the present experimental conditions, increasing the basicity is found to be more effective than increasing the MgO content in decreasing the viscosity of the slag. At higher temperatures, the increase of basicity or MgO content does not appreciably decrease the viscosity of the slag, as it does at lower tem-peratures. The calculated activation energy of viscous flow is between 154 and 200 kJ＆#183;mol-1, which decreases with an increase in basicity from 0.4 to 1.0 at a fixed MgO content in the range of 13wt%to 19wt%.

关键词： slags viscosity basicity magnesia activation energy Fourier transform infrared spectroscopy

Analysis of blade vibration response induced by rotating stall in axial compressor

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航空动力学报 2012年第10期27卷 2269-2277页

作者： Zhang, Ming-Ming Hou, An-Ping Li, Jian-Xiong Yao, juan Chen, Ying-xiu School of Jet Propulsion Beijing University of Aeronautics and Astronautics Beijing 100191 China

An experimental and numerical study was conducted to investigate the forced response of blade vibration induced by rotating stall in a low speed axial *** have been made of the transient stalling process in a low speed axial compressor *** CFD study was performed using solution of 3-dimensional Navier-Stokes equations,coupled with structure finite element models for the blades to identify modal shapes and structural deformations *** between fluid and structure were managed in a coupled manner,based on the interface information exchange until convergence in each time *** on the rotating stall measurement data obtained from a low speed axial compressor,the blade aeroelastic response induced by the rotating stall flow field was analyzed to study the vibration characteristics and the correlation between the *** this approach,good agreement between the numerical results and the experimental data was *** flow phenomena were well captured,and the results indicate that the rotating field stall plays a significant role in the blade vibration and stress affected by the flow excitation.

关键词： compressor rotating stall blade forced response CFD fluid-structure interaction