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Embryonic and larval development of Babylonia formosae habei (Altena and Gittenberger, 1981) (Gastropoda:Buccinidae) on china’s coast

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Acta Oceanologica Sinica 2004年第3期23卷 521-531页

作者： CHEN Yan, KE Caihuan, ZHOU Shiqiang, LI FuxueDepartment of Oceanography, key laboratory for Marine Environmental {2. of the ministry of education, xiamen university, xiamen 361005, china xiamen Univ Dept Oceanog Key Lab Marine Environm Sci Minist Educ Xiamen 361005 Peoples R China

The development of embryos and larvae of Babylonia formosae habei living along the southeast coast of china is observed under laboratory conditions. The egg masses are laid by females on hard substrate at night and each capsule contains 100-500 eggs. Each egg is 2.0-2.0 mm in diameter. The first two cleavages of the embryo are meridional and equal, and a polar lobe is produced. Larval kidney, which only consists of a single cell, appears during the gastrula stage on each side of the embryo. The right tentacle develops prior to the left one. At 2.-2.℃, an intracapsulate veliger stage is reached about 4.5 d after deposition. The larvae hatch on the fifth day as swimming veligers with a shell length of 360 -500 mm. The newly hatched larva can ingest suspended algal cells from the water column and remains in the pelagic stage for 8-10 d. The newly settled juveniles are 900-1 2.0 mm in shell length.

关键词： Babylonia formosae habei embryo larva juvenile development

Simultaneous Determination of Fluorescein, Rhodamine 6G and Rhodamine B in Turbid Solution by Polarization Variable-Angle Synchronous Fluorescence Spectrometry

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Chinese Chemical Letters 2000年第7期11卷 613-614页

作者： Yao Qun LI Fang QIAN Xian Zhi HUANG(Department of Chemistry and key laboratory of {2. sciences of the ministry of education,xiamen university, xiamen 361005) xiamen Univ Dept Chem Xiamen 361005 Peoples R China xiamen Univ Key Lab Analyt Sci Minist Educ Xiamen 361005 Peoples R China

Polarization variable-angle synchronous fluorescence spectrometry was proposed to determine samples in turbid solution. A mixture of fluorescein, rhodamine 6G and rhodamine B was used to evaluate the technique. The background caused by scattering light was decreased remarkably. The limits of detection were 0.6 ng/ml for fluorescein, 2.3 ng/ml for rhodamine 6G and 4.1 ng/ml for rhodamine B, respectively.

关键词： variable-angle synchronous fluorescence polarization fluorescein rhodamine 6G rhodamine B

Guided elastic waves in infinite free-clamped hollow cylinders

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Progress in Natural science:Materials International 2009年第3期19卷 313-320页

作者： Liguo Tang a,b,*, Shengxing Liu a,b a Department of Oceanography, xiamen university, xiamen 361005,{2. b key laboratory of Underwater Acoustic Communication and Marine Information Technology of the ministry of education, xiamen university, xiamen 361005,{2. [a]Department of Oceanography Xiamen University Xiamen 361005 China [b]Key Laboratory of Underwater Acoustic Communication and Marine Information Technology of the Ministry of Education Xiamen University Xiamen 361005 China

Guided elastic-wave-inspection technique for hollow cylinders has received plenty of attention in recent years because of its high effciency and low cost. To apply guided elastic waves to defects detection, it is necessary to investigate the propagation of guided waves in the hollow cylinders under all kinds of boundary conditions. In this paper, the dispersion equations of torsional, longitudinal and flexural guided waves in the hollow cylinders with traction-free and clamped lateral boundaries are derived by elastodynamic theory, based on which the phase and group velocity dispersion curves of the guided waves mentioned above are obtained. And the dispersion properties of these waves are discussed in detail. The transient wave in a free-clamped hollow cylinder is simulated by the finite element method (FEM). The time-frequency distribution of the transient wave agrees well with the theoretical group velocity dispersion curves.

关键词： Guided elastic waves Free-clamped hollow cylinders Dispersion

Extended detection range for an optical enzymatic glucose sensor coupling with a novel data-processing method

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science china Chemistry 2010年第6期53卷 1385-1390页

作者： GUO GuangMei1,WANG XuDong2.ZHOU TingYao2.& CHEN Xi2.1College of sciences,Hebei university of science and Technology,Shijiazhuang 050018,china 2.epartment of Chemistry,College of Chemistry and Chemical Engineering,xiamen university key laboratory of analytical sciences of xiamen university,xiamen {12.,china 1. College of sciences Hebei University of Science and Technology Shijiazhuang 050018 China2. Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University key laboratory of {2. sciences of xiamen university Xiamen 361005 China

A new data-processing method was established and applied for optical enzymatic glucose sensing,in which oxygen and glucose were simultaneously *** oxygen level remaining in the detection system,which was equal to the difference between the initial and consumed oxygen concentrations,could be measured using fluorescent oxygen indicators immobilized in the sensing *** was deduced that the ratio of I0 and I was inversely proportional to glucose concentration,where I0 is the maximum fluorescence intensity in various glucose solutions,and I is the fluorescence intensity at various concentrations of *** the new data-processing method,the detection range of the calibration curve method was extended from 0 to 1.2.mmol L-1,which was enlarged about 2.3 folds over that in ordinary *** prepared glucose sensor could be directly applied to detect high concentrations of glucose.

关键词： optical glucose sensor glucose oxidase extended detection range

An eigenfunction expansion method for the elastodynamic response of an elastic solid with mixed boundary surfaces

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Progress in Natural science:Materials International 2008年第9期18卷 1063-1068页

作者： Liguo Tang a,b,*, Jianchun Cheng c a Department of Oceanography, xiamen university, xiamen 361005,{2. b key laboratory of Underwater Acoustic Communication, and Marine Information Technology, ministry of education, xiamen university, xiamen 361005,{2. c laboratory of Modern Acoustics and Institute of Acoustics, Nanjing university, Nanjing 2.0093,{2. Department of Oceanography Xiamen University Xiamen 361005 China key laboratory of Underwater Acoustic Communication and Marine Information Technology Ministry of Education Xiamen University Xiamen 361005 China laboratory of Modern Acoustics and Institute of Acoustics Nanjing University Nanjing 210093 China

The method of eigenfunction expansion is one of the most elegant methods for solving elastodynamic problems. The solution obtained from it is more concise than that obtained from the integral transform technique. Traditional eigenfunction expansion method is used for the elastodynamic problems with displacement and traction boundary conditions. In this paper, the method is generalized to study the elastodynamic response of an elastic solid with mixed boundary surfaces, and the exact analytical solution is derived. The dynamic response of a finite-length solid aluminum cylinder with two mixed end boundaries is numerically evaluated. The result com- puted from the analytical solution agrees very well with that obtained from finite element method (FEM).

关键词： Eigenfunction expansion Elastodynamic response Mixed boundary

Heavy metals in surface sediments from Minjiang Estuary-Mazu and xiamen-Jinmen sea areas

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Journal of Environmental sciences 2003年第1期15卷 116-122页

作者： HONG Li\|yu\+*, HONG Hua\|sheng, CHEN Wei\|qi, WANG Xin\|hong, ZHANG Luo\|ping (key laboratory for Marine Environmental {2. of ministry of education/Environmental {2. Research Center, xiamen university, xiamen 361005, china. Enviromental science Reserach Center Xiamen University Key Laboratory for Marine Environmental Science of Ministry of Education Xiamen 361005

The concentrations of Cu, Pb, Zn and Cd in surface sediments from Minjiang Estuary\|Mazu and xiamen\|Jinmen sea areas of china were investigated during 1995—1996. The concentration ranges of Cu, Pb, Zn and Cd in the Minjiang Estuary\|Mazu sea area were 16.4\ 37.2. 33.4\69.6, 92.1\12., 0.087\0.336 mg/kg（dry wt.）, respectively; those for xiamen\|Jinmen sea area were 11.0\2..5, 36.0\80.3, 77.5\161, 0.135\0.2.5 mg/kg（dry wt.）, respectively. The concentrations and distributions of Cu, Pb, Zn and Cd in surface sediments of Minjiang Estuary\|Mazu and xiamen\|Jinmen sea areas were analyzed and evaluated. The results showed that the values of Zn and Pb exceeded those of sediment quality criteria. The average concentration of Cu in Minjiang Estuary\|Mazu sea area was higher than that in xiamen\|Jinmen sea area. The obviously higher concentrations of Cu, Pb, Zn and Cd were found at outlets of Minjiang and Jiulong River. From the estuaries to open sea, the concentrations of Cu, Pb, Zn and Cd had a decreasing trend, and then elevated in the sea areas near Mazu and Jinmen, suggesting that Cu, Pb, Zn and Cd in Minjiang Estuary\|Mazu and xiamen\|Jinmen sea areas may come from both the mainland and Taiwan of china.

关键词： heavy metal sediment concentration distribution Minjiang Estuary\|Mazu and xiamen\|Jinmen sea areas

Progress in the development of techniques based on light scattering for single nanoparticle detection

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science china Chemistry 2011年第8期54卷 1244-1253页

作者： ZHU ShaoBin, WANG Shuo, YANG LingLing, HUANG TianXun & YAN XiaoMei Department of Chemical Biology, College of Chemistry and Chemical Engineering key laboratory for Chemical Biology of Fujian Province key laboratory of analytical science, xiamen university, xiamen 361005, china 1. Department of Chemical Biology College of Chemistry and Chemical Engineering key laboratory for Chemical Biology of Fujian Province key laboratory of {2. science Xiamen University Xiamen 361005 China

Nanoparticles have recendy attracted extensive attention in view of their great potential in biomedicine and bioanalytical applications. Single particle detection via light scattering offers a simple and efficient approach for the size, size distribution, and concentration analysis of nanoparticles. In particular, intrinsic heterogeneity or rare events masked by ensemble averaging can be revealed. However, the sixth power dependence of Rayleigh scattering on particle size makes it very challenging to detect individual nanoparficles of small sizes. This article is intended to provide an overview of recent progress in the development of techniques based on light scattering for the detection of single nanoparticles.

关键词： light scattering single particle detection nanoparticles confocal correlation spectroscopy flow cytometry

Detection of cyclonic eddy generated by looping tropical cyclone in the northern South china Sea: a case study

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Acta Oceanologica Sinica 2004年第2期23卷 213-224页

作者： HUJianyu KAWAMURAHiroshi keylaboratoryofMarineEnvironmental{2.ofministryofeducation InstituteofSubtropicalOceanography XiamenUniversityXiamen361005China CenterforAtmosphericandOceanicStudies FacultyofScienceTohokuUniversitySendai980-8578Japan

A case study on the cyclonic eddy generated by the tropical cyclone looping over the northern South china Sea (NSCS) is presented, using TOPEX/POSEIDON altimeter data and AVHRR sea surface temperature (SST) data. Three cases relating to the tropical cyclone events (Typhoon Kai-Tak in July 2.00, Tropical Storm Russ in June 1994 and Tropical Storm Maria in August-September 2.00) over the NSCS have been analyzed. For each looping tropical cyclone case, the cyclonic eddy with an obvious sea level depression appears in the sea area where the tropical cyclone takes a loop form, and lasts for about 2.weeks with a slight variation in location. The cold core with the SST difference greater than 2.against its surrounding areas is also observed by the satellite-derived SST data.

关键词： cyclonic eddy looping tropical cyclone northern South china Sea TOPEX/POSEIDON altimeter data

Study of colloidal phosphorus variation in estuary with salinity

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Acta Oceanologica Sinica 2010年第1期29卷 17-25页

作者： CHEN Ding ZHENG Airong CHEN Min Department of Oceanography and Institute of Subtropical Oceanography Xiamen University Xiamen 361005 China State key laboratory of Marine Environmental {2.. xiamen university Xiamen 361005. China

The variation of colloidal phosphorus with salinity in estuary was studied in this paper, which was compared with those of particle and truly dissolved phosphorus with the purpose of finding out the similarities and differences between their behaviors in the estuary. Distribution patterns of phosphorus in particle, colloidal and truly dissolved phase at different salinities and their relationships with suspended particulate matter were also studied to understand the transformation and transporta- tion of colloidal phosphorus in estuarine area. The result showed that the concentrations of total colloidal phosphorus, organic colloidal phosphorus and inorganic colloidall phosphate all descended from river-end to sea-end, illustrating their terrigenous source. *** of organic to total colloidal phosphorus decreased with salinity＇s increment, indicating that organic phosphorus was influenced by scavenging process of colloid more significantly as compared with inorganic phosphate. Both of the phosphorus variation tendencies and the proportion between organic and inorganic phosphorus in colloidal phase was similar with that in truly dissolved phase while different from that in particle phase.

关键词： truly dissolved phase colloidal phosphorus salinity