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Institution

Ocean University of China

EducationQingdao, China
About: Ocean University of China is a education organization based out in Qingdao, China. It is known for research contribution in the topics: Population & Sea surface temperature. The organization has 27604 authors who have published 27886 publications receiving 440181 citations. The organization is also known as: Zhōngguó Hǎiyáng Dàxué & OUC.


Papers
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Journal ArticleDOI
TL;DR: In this paper, a symmetric supercapacitor using carbon nanoflakes as electrodes yielded a normalized active mass of 24.4 Wh·kg−1 at a stable 1.8-V window in a 1 M Na2SO4 electrolyte.
Abstract: Achieving a satisfactory energy–power combination in a supercapacitor that is based on all-carbon electrodes and operates in benign aqueous media instead of conventional organic electrolytes is a major challenge. For this purpose, we fabricated carbon nanoflakes (20–100 nm in thickness, 5-μm in width) containing an unparalleled combination of a large surface area (3,000 m2·g−1 range) and mesoporosity (up to 72%). These huge-surface area functionalized carbons (HSAFCs) also had a substantial oxygen and nitrogen content (~10 wt.% combined), with a significant fraction of redox-active carboxyl/phenol groups in an optimized specimen. Their unique structure and chemistry resulted from a tailored single-step carbonization-activation approach employing (2-benzimidazolyl) acetonitrile combined with potassium hydroxide (KOH). The HSAFCs exhibited specific capacitances of 474 F·g−1 at 0.5 A·g−1 and 285 F·g−1 at 100 A·g−1 (charging time < 3 s) in an aqueous 2 M KOH solution. These values are among the highest reported, especially at high currents. When tested with a stable 1.8-V window in a 1 M Na2SO4 electrolyte, a symmetric supercapacitor device using the fabricated nanoflakes as electrodes yielded a normalized active mass of 24.4 Wh·kg−1 at 223 W·kg−1 and 7.3 Wh·kg−1 at 9,360 W·kg−1. The latter value corresponds to a charge time of <3 s. The cyclability of the devices was excellent, with 93% capacitance retention after 10,000 cycles. All the electrochemical results were achieved by employing electrodes with near-commercial mass loadings of 8 mg·cm−2.

101 citations

Journal ArticleDOI
TL;DR: The obtained results showed the enhancement of diethyl phthalate (DEP) decomposition by UV irradiation with the Fenton reaction, which provides an effective approach to the treatment of wastewater containing DEP.

101 citations

Journal ArticleDOI
TL;DR: In this paper, the relation between wind driven wave slope variance and sea surface wind speed was investigated using global satellite observations of lidar backscatter measurements acquired by the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) mission.
Abstract: Global satellite observations of lidar backscatter measurements acquired by the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) mission and collocated sea surface wind speed data from the Advanced Microwave Scanning Radiometer for the Earth Observing System (AMSR-E), are used to investigate the relation between wind driven wave slope variance and sea surface wind speed. The new slope variance – wind speed relation established from this study is similar to the linear relation from Cox-Munk (1954) and the log-linear relation from Wu (1990) for wind speed larger than 7 m/s and 13.3 m/s, respectively. For wind speed less than 7 m/s, the slope variance is proportional to the square root of the wind speed, assuming a two dimensional isotropic Gaussian wave slope distribution. This slope variance – wind speed relation becomes linear if a one dimensional Gaussian wave slope distribution and linear slope variance – wind speed relation are assumed. Contributions from whitecaps and subsurface backscattering are effectively removed by using 532 nm lidar depolarization measurements. This new slope variance – wind speed relation is used to derive sea surface wind speed from CALIPSO single shot lidar measurements (70 m spot size), after correcting for atmospheric attenuation. The CALIPSO wind speed result agrees with the collocated AMSR-E wind speed, with 1.2 m/s rms error. Ocean surface with lowest atmospheric loading and moderate wind speed (7–9 m/s) is used as target for lidar calibration correction.

101 citations

Journal ArticleDOI
TL;DR: In this paper, the generalized Darboux transformation is established to the AB system, which mainly describes marginally unstable baroclinic wave packets in geophysical fluids and ultra-short pulses in nonlinear optics.

101 citations

Journal ArticleDOI
TL;DR: It is concluded that beta-actin could be used as a reliable internal reference gene for real-time PCR based quantitation of gene expression studies in various tissue samples of C. semilaevis challenged with LPS or pathogenic bacteria.

101 citations


Authors

Showing all 27836 results

NameH-indexPapersCitations
Guangming Zeng1461676100743
Bin Wang126222674364
Simon A. Wilde11839045547
Yusuke Yamauchi117100051685
Xiaoming Li113193272445
Baoshan Xing10982348944
Peng Wang108167254529
Jun Yang107209055257
Shang-Ping Xie10544136437
M. Santosh103134449846
Qi Li102156346762
Wei Liu102292765228
Tao Wang97272055280
Wei Wang95354459660
Peng Li95154845198
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
2023103
2022515
20213,161
20202,814
20192,480
20182,068