科研成果

2007

King SM, Rosenoern T, Shilling JE, Chen Q, Martin ST. Cloud condensation nucleus activity of secondary organic aerosol particles mixed with sulfate. Geophysical Research Letters. 2007;34:L24806.Abstract

The cloud condensation nucleus (CCN) activity of organic-sulfate particles was investigated using a steadystate environmental chamber. The organic component consisted of secondary organic aerosol (SOA) generated in the dark from 24 +/- 2 ppb alpha-pinene for conditions of 300 +/- 5 ppb ozone, 40 +/- 2% relative humidity, and 25 +/- 1 degrees C, with the organic mass loading in the chamber ranging from 23 to 37 mu g m(-3). CCN analysis was performed for 80-to 150-nm particles having variable organic-sulfate volume fractions, which were estimated from the diameter of the organic-sulfate particle relative to that of the seed as well as independently from mass spectra. Critical supersaturation, which increased for greater SOA volume fraction and smaller particle diameter, was well predicted by a Kohler model having two components, one for ammonium sulfate and another for SOA. The entire data set could be successfully modeled by a single suite of effective chemical parameters for SOA. The results suggest that the effects of limited organic solubility in mixed SOA-sulfate particles may be reliably omitted in the treatment of cloud droplet formation.

Tu Y, Tersoff J. Coarsening, mixing, and motion: The complex evolution of epitaxial islands. Physical Review Letters. 2007;(9).

Si S, Lulu X, Lun W, Yu L. Cognitive distortions based on MDS configuration and sketch mapping: A case study in Beijing city, in Proceedings of SPIE - The International Society for Optical Engineering.Vol 6751.; 2007. 访问链接

Luo CX, Li H, Xiong CY, Peng XL, Kou QL, Chen Y, Ji H, Ouyang Q. The combination of optical tweezers and microwell array for cells physical manipulation and localization in microfluidic device. Biomedical MicrodevicesBiomedical Microdevices. 2007;9:573-578.

Luo C, Li H, Xiong C, Peng X, Kou Q, Chen Y, Ji H, Ouyang Q. The combination of optical tweezers and microwell array for cells physical manipulation and localization in microfluidic device. Biomedical Microdevices [Internet]. 2007;(4):573-578. 访问链接

Jozwiak K, Khalid C, Tanga MJ, Berzetei-Gurske I, Jimenez L, Kozocas JA, Woo A, Zhu W, Xiao R-P, Abernethy DR, et al. Comparative molecular field analysis of the binding of the stereoisomers of fenoterol and fenoterol derivatives to the β2 adrenergic receptor. Journal of Medicinal Chemistry [Internet]. 2007;(12):2903-2915. 访问链接

Tan X-J, Zhang Y-X, Qian M-P, Zhang Y-Y, Deng M-H. The comparison of different normalization methods in microarray data. Progress in Biochemistry and Biophysics. 2007;(6):625-633.

Michels II, Fang Y-X, Zhao D, Zhao L-Y, Lu L. Comparison of drug abuse in Germany and China. Acta Pharmacologica Sinica [Internet]. 2007;(10):1505-1518. 访问链接

Cheng T, Zhao Y, Li X, Lin F, Xu Y, Zhang X, Li Y, Wang R, Lai L. Computation of octanol-water partition coefficients by guiding an additive model with knowledge. Journal of Chemical Information and Modeling [Internet]. 2007;(6):2140-2148. 访问链接

Zhai H-F, Zhang Z-Y, Zhao M, Qiu Y, Ghitza UE, Lu L. Conditioned drug reward enhances subsequent spatial learning and memory in rats. Psychopharmacology [Internet]. 2007;(2):193-201. 访问链接

Zhang W, Lu W, Guo H, Wang EG. Conductance spectra of metallic carbon nanotube heterojunctions. Physical Review B - Condensed Matter and Materials Physics. 2007;(19).

Zhang X, Chen Y, Wang Z-yong, Chen Z, Gu H, Qu L-J. Constitutive expression of CIR1 (RVE2) affects several circadian-regulated processes and seed germination in Arabidopsis. Plant Journal [Internet]. 2007;(3):512-525. 访问链接

Gong L, Smith W, Zou H-fu. Consumption and Risk with hyperbolic discounting. Economics Letters. 2007;96:153-160.Abstract

Hyperbolic discounting is not observationally equivalent to exponential discounting. It is always possible to calibrate an exponential model so that it predicts the same level of consumption as a hyperbolic model. However, the two models have radically different comparative statics.

Lü R, Liu Z-R. Current and shot noise in a quantum dot coupled to ferromagnetic leads in the kondo regime. Chinese Physics Letters. 2007;(1):195-198.

Wu YQ, Lin HC, Ye PD, Wilk GD. Current transport and maximum dielectric strength of atomic-layer-deposited ultrathin Al2O3 on GaAs. Applied Physics Letters [Internet]. 2007;90. 访问链接

Wei X, Chen Q, Liu Y, Peng LM. Cutting and sharpening carbon nanotubes using a carbon nanotube 'nanoknife'. Nanotechnology. 2007;18.

Shuifa S, Keming F, Jiahui G, Qingcheng L, Furong X. Decay of 1.643 h 95Ru and its daughter's level structure. The European Physical Journal A [Internet]. 2007;32:149-158. 访问链接

Qiu X, Marvin CH, Hites RA. Dechlorane plus and other flame retardants in a sediment core from Lake Ontario. Environmental Science & Technology. 2007;41:6014-6019.Abstract

Our previous research on atmospheric samples suggested that Lake Ontario might receive significant amounts of Dechlorane Plus (DP), a highly chlorinated flame retardant, from the atmosphere and from inputs from DP's manufacturing facility in Niagara Falls, New York. To confirm this suspicion, a sediment core from the central basin of Lake Ontario was analyzed for the two isomers of DP, for polybrominated diphenyl ethers (PBDEs), and for 1,2-bis(2,4,6-tribromophenoxy)ethane (TBE). The results showed that the concentration of DP in sediment increased rapidly starting in the mid-1970s and reached its peak concentration (310 ng g(-1) dry weight) in the mid-1990s. The peak flux and total inventory of DP were estimated to be 9.3 ng cm(-2) yr(-1) and 120 ng cm(-2), respectively. These values suggest that the total burden of DP in Lake Ontario is similar to 20 tons and that the maximum load rate was similar to 2 tons per year. The highest concentrations of PBDEs and TBE were found in the surficial sediment, with average concentrations of 2.8, 14, and 6.7 ng g(-1) d.w. for PBDE3-7 (tri- through hepta-BDEs), BDE-209, and TBE, respectively. The surface fluxes were 0.08, 0.43, and 0.20 ng cm(-2) yr(-1), and the inventories were 0.87, 3.9, and 1.8 ng cm(-2) for PBDE3-7, BDE-209, and TBE, respectively. The concentration of DP in Lake Ontario sediment exceeds that of the brominated flame retardants combined.

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