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Triangle Area Representation for Profiled Fiber Shape

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Journal of Donghua University(English Edition) 2010年第3期27卷 293-299页

作者：唐莉萍曾培峰吴雄英徐步高 College of Information Science and Technology Donghua University School of Computer Science and Technology Donghua University Shanghai entry-exit inspection and quarantine bureau Department of Human Ecology The University of Texas at Austin

A multi-shape representation approach for measuring geometrical properties of profiled fibers was *** closed edge chains of a fiber cross section,three evenly spaced vertices were selected to form a triangle by changing the vertices' spacing,or the step length,the Triangle Area Representation(TAR)was calculated with a special *** bend direction of the two consecutive lines drawn by three vertices determined the sign of the *** and TARP were negative and positive extensions of TAR,and used to analyze concave and convex segments on the *** length of TARN measured the size of ***-scale TARPs together with TARN can help to detect fiber conglutinations.

关键词： fiber cross section concave edge convex edge fiber conglutination profiled fiber

Determination of Ultratrace Amounts of Copper(Ⅱ) in Water Samples by Electrothermal Atomic Absorption Spectrometry After Cloud Point Extraction

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Chemical Research in Chinese Universities 2007年第2期23卷 143-147页

作者： CHEN Jian-guo CHEN neng-wu CHEN Shao-hong LIN Li ZHONG Ying-ying Department of Chemistry Xixi Campus Zhejiang University Hangzhou 310028 P. R. China Ningbo entry-exit inspection and quarantine bureau Ningbo 315012 P. R. China

A novel approach was developed for the determination of ultratrace amounts of copper in water samples by using electrothermal atomic absorption spectrometry （ETAAS） after cloud point extraction （ CPE ）. 1-（ 2-Pyridylazo ） -2- naphthol was used as the chelating reagent and Triton X-114 as the mieellar-forming surfactant. CPE was conducted in a pH 8. 0 medium at 40 ℃ for 10 rain. After the separation of the phases by contrifugafion, the surfactant-rieh phase was diluted with 1 mL of a methanol solution of 0. 1 mol/L HNO3. Then 20μL of the diluted surfactant-rieh phase was injected into the graphite furnace for atomization in the absence of any matrix modifier. Various experimental conditions that affect the extraction and atomization processes were optimized. A detection limit of 5 ng/L was obtained after preconeentration. The linear dynamic range of the copper mass concentration was found to be 0-2.0 ng/mL, and the relative standard deviation was found to be less than 3. 1% for a sample containing 1.0 ng/mL Cu （ Ⅱ ）. This developed method was successfully applied to the determination of uhratraee amounts of Cu in drinking water, tap water, and seawater samples.

关键词： Cloud point extraction Preconeentration Electrothermal atomic absorption spectrometry Copper( Ⅱ) Water analysis

Carbon Emissions Embodied in China’s International Trade of Textiles and Clothing

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Journal of Donghua University(English Edition) 2012年第6期29卷 515-519页

作者：王来力丁雪梅孙菲菲 NDWIGA Duncan-Kariuki 吴雄英 Fashion Institute Donghua University School of Art and Design South-Central University for Nationalities International Cultural Exchange School Donghua University Shanghai entry-exit inspection and quarantine bureau

International trade of textiles and clothing has numerous environmental implications, such as carbon leakage. In order to estimate the CO2 emissions embodied in China's imports and exports of textiles and clothing, an empirical analysis was carried out with environmental input-output analysis (EIOA) method using the most recent data available. The results indicate that China is a net exporter of embodied CO2 emissions on account of its international trade of textiles and clothing. The amount of the net exported embodied CO2 emissions increases from 110 million metric tons(Mt) of CO2 in 2002 to 280 Mt of CO2 in 2011. In particular, United States, Japan, and European Union transfer to China 339 Mt of CO2, 291 Mt of CO2 and 396 Mt of CO2 respectively during the period of 2002 -2011.

关键词： embodied CO2 emissions international trade textiles and clothing

Synthesis and Photocatalytic Activity of One-Dimensional CdS@TiO_2 Core-Shell Hetero-structures

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Nano-Micro Letters 2011年第1期3卷 6-11页

作者： Hongwei Wei Le Wang Zhipeng Li Shouqing Ni Quanqin Zhao Key Laboratory for Colloid & Interface Chemistry of Education Ministry Department of Chemistry Shandong University State Key Laboratory of Ceramic Zibo entry and exit inspection and quarantine bureau

One-dimensional Cd S@TiO_2 core-shell heterostructures were fabricated via the hydrolysis of tetrabutyl titanate(TBT) on preformed Cd S nanowires. The as-prepared products were characterized by X-ray diffraction, transmission electron microscopy, selected area electron diffraction and diffuse reflectance spectroscopy techniques. Results demonstrated that the hydrolysis of TBT had a great influence on the morphology of the coated TiO_2 shell, resulting in the formation of TiO_2 nanoparticles and nanolayer-modified Cd S@TiO_2 heterostructures. Degradation of methylene blue using Cd S@TiO_2 core-shell heterostructures as photocatalysts under visible light irradiation was investigated. Comparative photocatalytic tests showed that the TiO_2 nanoparticles-modified heterostructure exhibited a superior activity due to the passivity of photogenerated charge carriers.

关键词： One-dimensional CdS@TiO2 heterostructures Photocatalysis Methylene blue Morphology Mechanism

Study on Shigella Detection by ATP Bioluminescence Magnetic Enzyme Immunoassay

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Meteorological and Environmental Research 2013年第2期4卷 18-21,25页

作者： Suzhen Zhu Xinghai Wu Liqing Zhao Jing Tang Weixing Ma Jian Zhang Shandong entry-exit inspection and quarantine bureau

[Objective] The research aimed to establish a rapid detection method for Shigella. [Method] Combining immunomagnetic separation technology with ATP bioluminescence technology, a new kind of fast and accurate ATP bioluminescence magnetic enzyme immunoassay technique for Shigella was established. [Result] Using ATP bioluminescence magnetic enzyme immunoassay technique to detect standard solution for Shigella （ATCC 25931 ）, result showed that correlation coefficient between relative light intensity detected by instrument and bacteria concentration detec- ted by culture counting method was 0.981 1. Moreover, relation curve between relative light intensity and Shigella concentration was drawn. [ Conclusion] The method had a high detection speed and accuracy, and could be used for the rapid detection of pathogen in food and environment.

关键词： Shigella Immunomagnetic beads separation techniques ATP bioluminescence technology ATP bioluminescence magnetic enzyme immunoassay China

Rapid Detection of Fox-derived Components using Mitochondrial COI Gene Sequence

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Animal Husbandry and Feed Science 2014年第6期6卷 345-347,352页

作者： Sun Min Gao Hongwei Gong Fang Liu Caixia Shandong entry-exit inspection and quarantine bureau

Fox is an important economic fur animal with a very promising prospect. The fox mitochondrial COl gene-specific primers and probes were used to opti- mize and develop a real time fluorescence PCR system for rapid detection of fox-derived components. The results showed that the real time fluorescence PCR gave a very high sensitivity, with the detection limit as low as 12 fg DNA, and it did not present any cross reaction with other common species like pig, cow, sheep, dog, soybean and maize. It could be concluded that this method can be used as an effective method for detecting the fox-derived components in food and feedstuff, and can also be applied for distinguishing the fox fur from adulterants.

关键词： Fox COI gene Real time fluorescence PCR

Determination of Rhodamine B in Food Using HPLCUV Method

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Chinese Food Science 2012年第2期1卷 37-39页

作者： WANG Yong WU Na Jining entry-exit inspection and quarantine bureau

[ Objective] The aim was to establish a method for the determination of Rhodamine B in food by HPLC-UV. [ Metkod] Rhodamine B was extracted with acetone/hexane from food samples. After concentrated and purified by alumina cartridge, the Rhodamine B content in the food was determined by using high performance liquid chromatography with ultraviolet visible detector. [ Result] Within tile concentration range of 0.005 - 2.000 mg/kg, the peak area of Rhodamine B presented good linear relation with the concentration, and the related coefficient was 0.999 98. With high average recovery rate, the detection limit of the method was 0.005 mg/kg[ Concision] It is a fast and accurate method with high sensitivity to detect Rhodamine B in food.

关键词： Food HPLC-UV Rhodamine B Detection China

Phylogenetic Relationships of Sorghum and Related Species Inferred from Sequence Analysis of the nrDNA ITS Region

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Agricultural Sciences in China 2006年第4期5卷 250-256页

作者： GUO Qiong-xia HUANG Ke-hui YU Yun HUANG Zhen WU Zhen-quan Fujian entry-exit inspection and quarantine bureau Fuzhou 350001 P.R.China Fujian Agriculture and Forestry University Fuzhou 350002 P.R. China

Analysis of phylogenetic and evolution in six species of Sorghum was based on internal transcribed spacer （ITS） sequences in nuclear ribosomal DNA. Results showed that the length of the ITS regions among the six species ranged from 588 to 589 bp and the contents of G＋C in ITS （ITS1 ＋5.8S＋ITS2） regions ranged from 60.27 to 61.05%; the length of ITS1 ranged from 207 to 208 bp and the contents of G ＋ C in the ITS 1 regions ranged from 53.91 to 61.54%. The length of the 5.8S rDNA and ITS2 regions in the six species was 164 and 217 bp respectively, and the contents of G ＋ C ranged from 56.10 to 58.54% in the 5.8S rDNA region and 66.36 to 67,28% in the ITS2 region. Among regions of ITS, ITS1, ITS2, and 5.8S, the best sequence for genetic relationship analysis in the six species was the ITS region. On the basis of the Jaccard coefficient and phylogentic tree, S. sp. was more related to S, propinguum than to other species. This was consistent with the fact that S. sp. is derived from S. propinguum. From the phylogenetic tree based on ITS1, S. halepense, silk sorghum and S. sudanense, are identical in the ITS 1 sequence, whereas the phylogenetic tree based one shows that S. sudanense has a closer genetic association with S. almum rather than with S. halepense and silk sorghum.

关键词： Sorghum ITS phylogenetic relationship

Built-up Effect of Core Material for Microencapsulated Flame Retardant Containing Dimethyl Methyl Phosphate

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Journal of Donghua University(English Edition) 2008年第2期25卷 159-163页

作者：林苗董凯杨勇 College of Chemistry and Chemical Engineering Key Laboratory of Science & Technology of Eco-Textile (Donghua University) Ministryof Education Donghua University inspection Center of Industrial Product & Raw Materials Shanghai Entry-Exit Inspection & Quarantine Bureau

The flame retardants containing organophosphorus compounds have extensively been used in the flame retarding of polymer materials. Among others, dimethyl methyl phosphate (DMMP) was applied in flame retarding of polyurethane owing to its so much merit. However, the water-soluble property of DMMP restricted its application in textile fabric. The flame retarding system containing DMMP will be microencapsulated to form a novel flame retardant that could be used in textiles. We have studied the built–up effect of DMMP with some inorganic compounds to improve the afterflame and afterglow suppression in the flame retarding system. The experimental data indicated that inorganic compounds containing various non-metal elements P, N, B and metal ions Mg2+, Al3+, Ca2+, Zn2+, Cu2+, Mn4+ could be applied in flame retarding systems as additives to effectively suppress afterflame or afterglow.

关键词： flame retardant dimethyl methyl phosphate inorganic compound built-up effect after flame suppression afterglow suppression