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Field released transgenic papaya effect on soil microbial communities and enzyme activities

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Journal of Environmental Sciences 2006年第4期18卷 734-740页

作者： wei xiang-dong ZOU Hui-ling CHU Lee-min LIAO Bin YE Chang-min LAN Chong-yu School of Life Sciences Sun Yat-sen University Guangzhou 510275 China Department of Biology The Chinese University ofHong Kong Shatin Hong Kong China

Soil properties, microbial communities and enzyme activities were studied in soil amended with replicase （RP）-transgenic or non-transgenic papaya under field conditions. Compared with non-transgenic papaya, significant differences （P〈0.05） were observed in total nitrogen in soils grown with transgenic papaya. There were also significant differences （P〈0.05） in the total number of colony forming units （CFUs） of bacteria, actinomycetes and fungi between soils amended with RP-transgenic plants and non-transgenic plants. Compared with non-transgenic papaya, the total CFUs of bacteria, actinomycetes and fungi in soil with transgenic papaya increased by 0.43-1.1, 0.21-0.80 and 0.46-0.73 times respectively. Significantly higher （P〈0.05） CFUs of bacteria, actinomycetes and fungi resistant to kanamycin （Km） were obtained in soils with RP-transgenic papaya than those with non-transgenic papaya in all concentrations of Km. Higher resistance quotients for Km＇（kanamycin resistant） bacteria, actinomycetes and fungi were found in soil planted with RP-transgenic papaya, and the resistance quotients for Km＇ bacteria, actinomycetes and fungi in soils with transgenic papaya increased 1.6-4.46, 0.63-2.5 and 0.75-2.30 times. RP-transgenic papaya and non-transgenic papaya produced significantly different enzyme activities in arylsulfatase （5.4-5.9x）, polyphenol oxidase （0.7-1.4x）, invertase （0.5-0.79x）, cellulase （0.23-0.35x） and phosphodiesterase （0.16-0.2x）. The former three soil enzymes appeared to be more sensitive to the transgenic papaya than the others, and could be useful parameters in assessing the effects of transgenic papaya. Transgenic papaya could alter soil chemical properties, enzyme activities and microbial communities.

关键词： transgenic papaya soil microbes enzyme activity kanamycin resistance resistance quotient

L-Cysteine-assisted Synthesis of Copper Gallium Sulfide Microspheres

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Chemical Research in Chinese Universities 2012年第3期28卷 395-398页

作者： LIANG Xiao-juan ZHONG Jia-song CAI Qian HUANG Hai-yu LIU Hai-tao xiang wei-dong SUN Jun-cai College of Chemistry and Materials Engineering Wenzhou UniversityWenzhou 325035P.R.China Institute of Materials and Technology Dalian Maritime UniversityDalian 116026P.R.China College of Materials Science and Engineering Tongji UniversityShanghai 201804P.R.China

An effective L-cysteine-assisted synthetic route has been successfully developed to prepare copper gallium sulfide（CuGaS2） microspheres under solvothermal conditions with CuCI2.2HzO, GaC13 and L-cysteine as source materials, in which L-cysteine was used as the sulfide source and complexing molecule. The experiments revealed that the synthesized sample was of a typical CuGaS2 tetragonal structure. Moreover, the prepared CuGaS2 crystals consisting of microspheres made up of nanoflakes, and the diameter of the nanoflakes was about 20 nm. Raman spectrum of the obtained CuGaS2 exhibits a high-intensity peak of the A1 mode at 306 cm^-1. Meanwhile, a possible growth mechanism was proposed based on the investigations.

关键词： Copper gallium sulfide L-Cysteine Raman spectrum

L-cystine-Assisted Growth and Mechanism of CuInS_(2) Nanocrystallines via Solvothermal Process

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Chinese Physics Letters 2011年第5期28卷 245-248页

作者： LIU Hai-Tao ZHONG Jia-Song LIU Bing-Feng LIANG Xiao-Juan YANG Xin-Yu JIN Huai-dong YANG Fan xiang wei-dong College of Chemistry and Materials Engineering Wenzhou UniversityWenzhou 325035 College of Materials Science and Engineering Tongji UniversityShanghai 100092

L-cystine is successfully used as a kind of sulfur source to grow CuInS_(2) nanocrystallines at 200℃ for 18 h in a mixed solution made of 20mL ethylenediamine and 20mL distilled *** diameter of the CuInS_(2) nanocrystallines ranges from 300 to 500 *** structure of nanocrystallines is determined to be of the tetragonal phase of CuInS_(2).A reasonable possible mechanism for the growth of CuInS_(2) nanocrystallines is *** as-obtained CuInS_(2) products are examined using diverse techniques including x-ray powder diffraction,xray photoelectron spectroscopy,field-emission scanning electron microscopy,transmission electron microscopy,selected-area electron diffraction and high-resolution transmission electron microscopy.

关键词： tetragonal photoelectron sulfur

Automatic determination of stellar atmospheric parameters and construction of stellar spectral templates of the Guoshoujing Telescope (LAMOST)

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Research in Astronomy and Astrophysics 2011年第8期11卷 924-946页

作者： Yue Wu A-Li Luo Hai-Ning Li Jian-Rong Shi Philippe Prugniel Yan-Chun Liang Yong-Heng Zhao Jian-Nan Zhang Zhong-Rui Bai Peng wei wei-xiang dong Hao-Tong Zhang Jian-Jun Chen National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 China Universitede Lyon Universite Lyon 1 Villeurbanne F-69622 France CRAL Observatoire de Lyon CNRS UMR 5574 69561 Saint-Genis Laval France Key Laboratory of Optical Astronomy NAOC Chinese Academy of Sciences Graduate University of Chinese Academy of Sciences Beijing 100049 China Shandong University at weihai Weihai 264209 China

A number of spectroscopic surveys have been carried out or are planned to study the origin of the Milky Way. Their exploitation requires reliable automated methods and softwares to measure the fundamental parameters of the stars. Adopting the ULySS package, we have tested the effect of different resolutions and signal-to- noise ratios （SNR） on the measurement of the stellar atmospheric parameters （effective temperature Teff, surface gravity log g, and metaUicity [Fe/H]）. We show that ULySS is reliable for determining these parameters with medium-resolution spectra （R ～2000）. Then, we applied the method to measure the parameters of 771 stars selected in the commissioning database of the Guoshoujing Telescope （LAMOST）. The results were compared with the SDSS/SEGUE Stellar Parameter Pipeline （SSPP）, and we derived precisions of 167 K, 0.34dex, and 0.16dex for Teff, logg and [Fe/H] respectively. Furthermore, 120 of these stars are selected to construct the primary stellar spectral template library （Version 1.0） of LAMOST, and will be deployed as basic ingredients for the LAMOST automated parametrization pipeline.

关键词： astronomical data bases: atlases -- stars: fundamental parameters techniques: spectroscopic -- surveys

Investigation on Co-Combustion Kinetics of Anthracite and Waste Plastics by Thermogravimetric Analysis

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Journal of Iron and Steel Research International 2012年第10期19卷 30-35页

作者： LIU Zheng-jian, REN Shan, ZHANG Jian-liang, LIU wei-jian, XING xiang-dong, SU Bu-xin (State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China) State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing Beijing China

In order to effectively recycle resource for the benefit of the global environment, the utilization of waste plastics as auxiliary injectant for blast furnaces is becoming increasingly important. Combustion kinetics of plastics-coal blends with 0, 10%, 20% and 40% waste plastics (WP) are investigated separately by thermogravimetric analysis (TGA) from ambient temperature to 900 ℃ in air atmosphere. These blends are combusted at the heating rates of 5, 10 and 20 ℃/min. The results indicate that, with the increase of waste plastics content, the combustion processes of blends could be divided into one stage, two stages and three stages. The waste plastics content and heating rates have important effects on the main combustion processes of blends. With the increase of waste plastics content, the ignition temperature and the final combustion temperature of blends tend to decrease, while the combustion reaction becomes fiercer. With the increase of the heating rate, the ignition temperature, the mass loss rate of the peaks and the final combustion temperature of blends combustion tend to increase. The Flynn-Wall-Ozawa (FWO) iso-conversional method is used for the kinetic analysis of the main combustion process. The results indicate that, when the waste plastics content varied from 0 to 40%, the values of activation energy increase from 126.05 to 184.12 kJ /mol.

关键词： waste plastics anthracite co-combustion kinetics TGA iso-conversional method

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国际旅游城市评价指标体系的构建及应用研究

经济地理 2011年第1期31卷 170-176页

作者：朱梅魏向东苏州大学旅游系中国江苏苏州215021

近年国内不少城市提出建立国际旅游城市,并进行了相关实践,而学术界在此领域的研究较有限。文章借鉴国内外理论与实践经验,构建了一套包含10个二级指标和70个三级指标的国际旅游城市评价指标体系,通过AHP模型测算了指标权重,并运用该指... 详细信息

近年国内不少城市提出建立国际旅游城市,并进行了相关实践,而学术界在此领域的研究较有限。文章借鉴国内外理论与实践经验,构建了一套包含10个二级指标和70个三级指标的国际旅游城市评价指标体系,通过AHP模型测算了指标权重,并运用该指标体系对南京和苏州两市做了初步实证研究。结果表明,苏州多项指标略高于南京,两市均初步达到旅游国际化水平,国际旅游业总体特征表现为"一流的资源,二流的服务,三流的营销",经济、社会和生态环境基本符合国际标准,但国际交流能力较为薄弱。

关键词：国际旅游城市指标体系层次分析法南京苏州

城市青少年居民旅游影响感知及参与机制——以江苏省海门市为例

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桂林理工大学学报 2014年第1期34卷 198-206页

作者：朱梅魏向东苏州大学旅游系苏州215123

旅游影响感知研究多以旅游地居民总体为研究对象,忽略了各居民群体的差异性。以海门为例,探讨了青少年居民的旅游经济、社会文化、环境影响感知和该群体参与城市旅游发展的机制。研究表明:(1)受海门所处旅游地生命周期早期阶段和青少年... 详细信息

旅游影响感知研究多以旅游地居民总体为研究对象,忽略了各居民群体的差异性。以海门为例,探讨了青少年居民的旅游经济、社会文化、环境影响感知和该群体参与城市旅游发展的机制。研究表明:(1)受海门所处旅游地生命周期早期阶段和青少年个性心理特征影响,受访者积极感知强烈,消极感知不太明显,经济影响感知强于其他感知;(2)城市青少年旅游参与机制,由依托单位、场地、资金、辅导员、管委会、参与活动、规章制度等各项软硬件保障机制组成,是大中尺度旅游地社区参与的有益尝试;(3)该机制运行应形成政府主导、共青团带动、管委会负责、多元主体参与的协作模式,并实现对青少年的增权。

关键词：城市青少年居民旅游影响感知参与机制海门

Discovery of a new family member of arsenic–vanadium polyoxometalates with high catalytic performance for one-pot coupling of CO2, epoxides and amines

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Tungsten 2025年第1期7卷 80-87页

作者： Fang-Qian Wang Yin Zhang wei-wei Wang Mei-Qian Fu Hong-Bing Mo wei-dong Yu Chao Liu Jun Yan College of Chemistry and Chemical Engineering Central South University Junior Education Department Changsha Normal University School of Science Hunan University of Technology and Business

Arsenic-vanadium polyoxometalates（POMs） represent a family of tremendous potential catalysts owing to their peculiar physical and chemical *** in CO2conversion,using POMs to catalyze the conversion of CO2and epoxide into chemical intermediates is the research ***,A new family number of arsenic-vanadium POMs,[N（CH3）4]4[As8V12O38（H2O）]·2H2O({As8V12O38}),was reported and characterized by single-crystal X-ray diffraction,fourier transform infrared spectroscopy,X-ray photoelectron spectroscopy,*** from other allotropicity,{As8V12O38}shows a different structure pattern with an I-43d *** obtained {As8V12O38} was employed as a catalyst for the *** initial catalytic reaction confirmed that {As8V12O38} can catalyze the formation of epoxy carbonate by using 1.01 kPa CO2and epoxide at 70℃.Furtherly,when added amine in the catalytic system,oxazolidinone could be obtained by high yields,which provides an efficient way to convert CO2into profitable ***,a possible catalytic reaction mechanism was proposed by using different characterization analyses.{As8V12O38} first catalyzes the epoxide and CO2to form an epoxy carbonate and then catalyzes epoxy carbonate and benzylamine into oxazolidinone.

关键词： Arsenic CO2 conversion Oxazolidinone Polyoxometalates Vanadium

Quantum public-key crypto via EPR pairs

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 58-63页

作者： xiang-Qun Fu Hong-wei Li Jian-Hong Shi Tan Li Wan-Su Bao Henan Key Laboratory of Quantum Information and Cryptography Information Engineering University Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of China

With the development of quantum computing technology, quantum public-key cryptography is gradually becoming an alternative to the existing classical public-key cryptography. This paper designs a quantum trapdoor one-way function via EPR pairs and quantum measurements. Based on this, a new quantum public-key cryptosystem is presented, which offers forward security,and can resist the chosen-plaintext attack and chosen-ciphertext attack. Compared with the existing quantum public-key cryptos,eavesdropping can be automatically detected in this new quantum public-key cryptosystem under a necessary condition, which is also detailed in the paper.

关键词： quantum public-key crypto trapdoor one-way function EPR pairs