科研成果

1994

Barrett JC, Annab LA, Alcorta D, Preston G, Vojta P, Yin Y. Cellular senescence and cancer. Cold Spring Harbor Symposia on Quantitative Biology [Internet]. 1994:411-418. 访问链接

Cross MC, Meiron D, Tu Y. Chaotic domains: A numerical investigation. Chaos. 1994;(4):607-620.

Niggli E, Piston DW, Kirby MS, Cheng H, Sandison DR, Webb WW, Lederer WJ. A confocal laser scanning microscope designed for indicators with ultraviolet excitation wavelengths. AM.J.PHYSIOL. 1994;(1 part 1):C303-C310.

Rao Y. Conversion of a mesodermalizing molecule, the Xenopus Brachyury gene, into a neuralizing factor. Genes and Development [Internet]. 1994;(8):939-947. 访问链接

Niu Q, Wang T, Kirk WP. Deep centers as atomic-size quantum dot electron turnstiles. Superlattices and Microstructures. 1994;(4):399-401.

Kong D, Masker W. Deletion between direct repeats in T7 DNA stimulated by double-strand breaks. [Internet]. 1994;(19):5904-5911. 访问链接

谢新洲, 王益明. DIALOG的创始人──—萨米特. 情报理论与实践. 1994;(2):51-52.Abstract

ＤＩＡＬＯＧ的创始人──—萨米特谢新洲，王益明（北京大学信息管理系北京）罗杰．Ｋ．萨米特（ＲｏｇｅｒＫ．Ｓｕｍｍｉｔ）１９３０年１０月１４日出生于美国密西根州的底特律，后移居加利福尼亚。１９５２年，他获得了斯坦福大学心理学文学士；５年之后，他又获得了...

Du RR, Stormer HL, Tsui DC, Yeh AS, Pfeiffer LN, West KW. Drastic enhancement of composite fermion mass near landau level filling v = 1/2. Physical Review Letters. 1994;(24):3274-3277.

Xiao R-P, Cheng H, Lederer WJ, Suzuki T, Lakatta EG. Dual regulation of Ca²⁺/calmodulin-dependent kinase II activity by membrane voltage and by calcium influx. Proceedings of the National Academy of Sciences of the United States of America [Internet]. 1994;(20):9659-9663. 访问链接

Tang C, Feng S, Golubovic L. Dynamics and noise spectra of a driven single flux line in superconductors. Physical Review Letters. 1994;(8):1264-1267.

Wang EG, Su WP, Ting CS. Effect of the degree of disorder on electronic and optical properties in random superlattices. Journal of Applied Physics. 1994;(5):3004-3008.

Chang MC, Niu Q. Electron band structure in a two-dimensional periodic magnetic field. Physical Review B. 1994;(15):10843-10850.

Wang EG, Xu JH, Su WP, Ting CS. Electronic structures of Sb/Ga(Al)Sb (111) semimetal-semiconductor superlattices. Journal of Applied Physics. 1994;(9):5318-5326.

Wang EG, Xu JH, Su WP, Ting CS. Enhancement of optical absorption induced by disorder in three-dimensional random superlattices. Applied Physics Letters. 1994;(4):443-445.

Lee K-J, McCormick WD, Ouyang Q, Swinney HL. Erratum: Ferricyanide and pattern formation (Science (1994) (192-194)). Science. 1994;(5177):1348-.

Li QP, Xie XC. Erratum: Transport of one-dimensional interacting fermions through a barrier (Physical Review B (1994) 50, 7 (5021)). Physical Review B. 1994;(7):5021-.

Li SM, Anlauf KG, Wiebe HA, Bottenheim JW. ESTIMATING PRIMARY AND SECONDARY PRODUCTION OF HCHO IN EASTERN NORTH-AMERICA BASED ON GAS-PHASE MEASUREMENTS AND PRINCIPAL COMPONENT ANALYSIS. GEOPHYSICAL RESEARCH LETTERS. 1994;21:669-672.Abstract

Based on atmospheric measurements of multiple species at Egbert, a rural site in Ontario, Canada, during summer 1988, the emission ratios of HCHO/CO and HCHO/SIGMANO(y) for area sources and secondary production of HCHO have been estimated using a modified principal component analysis technique. The technique yields three principal components that represent a photochemically aged air mass, a diurnal cycle, and fresh area emissions. The area emission component has an emission ratio CO/SIGMANO(y) = 9 +/- 3 and SO2/CO = 0.005 +/- 0.003, in agreement with NAPAP area emission data for the eastern US [Buhr et al., 1992]. The emission ratios of HCHO/CO and HCHO/SIGMANO(y) in this component are 0.0056 +/- 0.0022 and 0.05 +/- 0.007, respectively. If these ratios are typical of eastern North American area emissions, the total primary HCHO emission for this region will be 8 x 10(9) moles HCHO annually based on the NAPAP CO emission inventories. Evidence of secondary HCHO production can be found in the photochemically aged component which has considerably higher HCHO/CO (0.016 +/- 0.004) and HCHO/SIGMANO(y) (0.29 +/- 0.03) ratios than the emission ratios. It is estimated that for every 1 ppb NO(x) converted to NO(y), 0.4 ppb HCHO are produced for the ratio (1-NO(x)/NO(y))<0.6; after which the relative HCHO production rate becomes smaller. Using this relative rate, the maximum total HCHO production over the eastern North America is estimated to be 1.3 x 10(11) moles year-1, or approximately 16 times that from primary emission.

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