Showing papers by "Ocean University of China published in 1999"
TL;DR: Results of this study support the previous finding that oysters tolerate a number of aneuploid conditions without obvious growth retardation and certain aneuPLoids such as monosomics and trisomics should be useful for genomic dissection and QTL analyses.
51 citations
TL;DR: A new scheme of the ordering by magnitude is proposed to analyze the vibration-torsion-rotation (VTR) interactions, in which the importance of the torsional problem is emphasized.
26 citations
TL;DR: Experiments indicated that the addition of a very small amount of double-stranded DNA quenched the fluorescence of the THAQ–Al complex, and the method was applied to the determination of DNA or RNA in synthetic samples.
18 citations
TL;DR: In this paper, the relationship between the mean wavelength and mean wave period of wind waves is derived for fetch-limited and fully developed seas, starting from the Rice solution of zero-crossing problem and using the JONSWAP and Pierson-Moscowitz spectra, respectively.
7 citations
TL;DR: The effects of selected environmental variables on the production of dim methylsulfide and dimethylsulfoniopropionate by laboratory batch cultures of microalgae were studied.
Abstract: The effects of selected environmental variables on the production of dimethylsulfide (DMS) and dimethylsulfoniopropionate (DMSP) by laboratory batch cultures of microalgae were studied The variations of DMS and DMSP output with algae growth and variations in nutrients and salinity are reported
3 citations
TL;DR: In this paper, the least median of squared orthogonal distance (LMD) method is used to fit various SR relationship curves to the data and then the least squares method is applied to the SR data with defined outliers being down weighted.
Abstract: Analysis of stock-recruitment (SR) data is most often done by fitting various SR relationship curves to the data. Fish population dynamics data often have stochastic variations and measurement errors, which usually result in a biased regression analysis. This paper presents a robust regression method, least median of squared orthogonal distance (LMD), which is insensitive to abnormal values in the dependent and independent variables in a regression analysis. Outliers that have significantly different variance from the rest of the data can be identified in a residual analysis. Then, the least squares (LS) method is applied to the SR data with defined outliers being down weighted. The application of LMD and LMD-based Reweighted Least Squares (RLS) method to simulated and real fisheries SR data is explored.
1 citations
TL;DR: In this paper, the nonlinear Kelvin wave equations with positive-only nonlinear (conditional) heating at the equator are reduced to a sixth-order nonlinear ordinary differential equation by using the Galerkin spectral truncated method.
Abstract: In this paper, the nonlinear Kelvin wave equations with “positive-only” nonlinear (conditional) heating at the equator are reduced to a sixth-order nonlinear ordinary differential equation by using the Galerkin spectral truncated method. The stability analysis indicates that when the heating parameter increases, the supercritical pitchfork and Hopf bifurcations can occur for the prescribed three heating profiles. Numerical calculations are made with the help of the fourth-order Rung-Kutta method. It is found that the convection heating-related Hopf bifurcation can lead to limit cycle and chaotic solutions. In a wide range of heating parameter, the solutions possess 30–60-day periods, and are dominated by wavenumbers one and two, especially by wavenumber-one. In addition, the zonal winds of the low-frequency solutions have a phase reversal between the upper and lower tropospheres. Thus, it appears that the convection heating-related Hopf bifurcation might be a possible mechanism of 30–60-day oscillation in the tropical atmosphere.
TL;DR: In this paper, the coupling equations describing nonlinear three-wave interaction among Rossby waves including the forcing of an external vorticity source are obtained, and the stability analysis indicates that when the amplitude of the external forcing increases to a certain extent, a pitchfork bifurcation occurs.
Abstract: In this paper, the coupling equations describing nonlinear three-wave interaction among Rossby waves including the forcing of an external vorticity source are obtained. Under certain conditions, the coupling equations with a constant amplitude forcing, the stability analysis indicates that when the amplitude of the external forcing increases to a certain extent, a pitchfork bifurcation occurs. Also, it is shown from numerical results that the bifurcation can lead to chaotic behavior of “ strange≓ attractor. For the obtained three-variable equation, when the amplitude of modulated external forcing gradually increases, a period-doubling bifurcation is found to lead to chaotic behavior. Thus, in a nonlinear three-wave coupling model in the large-scale forced barotropic atmospheric flow, chaotic behavior can be observed. This chaotic behavior can explain in part 30-60-day low-frequency oscillations observed in mid-high latitudes.