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| 1 | Variability of the currents in the Luzon Strait during spring of 2002 obtained from observations and satellite geostrophic currents and spectral analyses显示文摘The structure and variability of the currents in the Luzon Strait during spring of 2002 are studied, based on the current measurements at the average position of the mooring station (20°49′57'N, 120°48′12'E) from March 17 to April 15, 2002, satellite geostrophic currents in the Luzon Strait, and the spectral analyses, using the maximum entropy method. The subtidal currents at the mooring station show de-creased amplitudes downward with an anti-cyclonic rotation, suggesting that the currents enter and exit the South China Sea in the upper and intermediate layers, respectively. The vertical structure of the currents in the Luzon Strait suggests strongly the sandwiched structure of the LST, even though the bottom part of the profile is not resolved by the observational grid. The spectral analyses show the following periods of significant spectral peaks: (1) the tidal currents variability in the vertical direction; (2) the period about 4-6 d for the two cases of frequency f >0 and f<0 at the 200 and 500 m levels, but at the 800 m level only for the case of f >0; (3) The fluctuation in the period range is about 2-3 days for the two cases of f >0 and f<0 at the 200, 500 and 800 m levels, namely the Luzon Strait currents exhibit significant synoptical variability throughout the water column up to 800 m deep. Both direct current measurements and in situ hydrographic and satellite survey suggest no Kuroshio loop current in the Luzon Strait during the spring of 2002. | YUAN YaoChu LIAO GuangHong WANG HuiQun LOU RuYun CHEN Hong | 2009 | Science China Earth Sciences2009，52，4： | 3 |
| 2 | Existence of Solutions of Nonlinear m-point Boundary Value Problems显示文摘 | RUYUN MA NELSON CASTANEDA | 2001 | J Math Anal Appl2001，255，： | 2 |
| 3 | Trace Nb-doped Na_(0.7)Ni_(0.3)Co_(0.1)Mn_(0.6)O_(2) with suppressed voltage decay and enhanced low temperature performance显示文摘The P2-type manganese-based Na_(0.7)MnO_(2) cathode materials attract great interest due to their high theoretical capacity.However,these materials suffer from rapid capacity fading,poor rate performance and severe voltage decay resulting from phase transition and sluggish reaction kinetics.In this work we report a novel Nb-doped Na_(0.7)[Ni_(0.3)Co_(0.1)Mn_(0.6)]_(1-x)Nb_(x)O_(2) with significantly suppre ssed voltage decay and enhanced cycling stability.The strong Nb-O bond can efficiently stabilize the TMO fra mework,and the as prepared material demonstrates much lower discharge midpoint voltage decay(0.132 V) than that of pristine one(0.319 V) after 200 cycles.Consequently,a remarkably improved cycling perfo rmance with a capacity retention of 87.9% after 200 cycle at 0.5 C is achieved,showing a 2.4 fold improvement as compared to the control sample Na_(0.7)Ni_(0.3)Co_(0.1)Mn_(0.6)O_(2)(~37% rotation).Even at 2 C,a capacity retention of 68.4% is retained after 500 cycles.Remarkably,the as prepared material can be applied at low temperature of-20℃,showing a capacity retention of 81% as compared to that at room temperature. | Ruyun Yue Fang Xia Ruijuan Qi Da Tie Shanshan Shi Zhiping Li Yufeng Zhao Jiujun Zhang | 2021 | Chinese Chemical Letters2021，32，2： | 2 |
| 4 | Existence of positive solutions of a nonlinear fourth-order boundary value problem 显示文摘 | MA RUYUN XU LING | 2010 | Applied Mathematics Letters2010，23，： | 1 |
| 5 | Positive solutions for a nonlinear three-point boundary value problem显示文摘 | Ma Ruyun | 1999 | Electron J Differential Equations1999，，34： | 1 |
| 6 | Positive solutions of a nonlinear three-point boundary value problems显示文摘 | Ma Ruyun | 1998 | Electron J Differential E- quations1998，，34： | 1 |
| 7 | Existence of positive radial solutions for elliptic systems显示文摘 | MA Ruyun | 1996 | J Math Anal Appl1996，201，： | 1 |
| 8 | Multiplicity of positive solutions for second-order three-point boundary value problems显示文摘 | Ruyun Ma | 2000 | Computers and Mathematics with Applications2000，，2： | 1 |
| 9 | Existence of positive solutions for second order m - piont boundary value problems 显示文摘 | Ma Ruyun | 2002 | Ann Polon Math2002，79，3： | 1 |
| 10 | Existence of Positive Solutions for a Nonlinear Fourth-Order Boundary Value Problem 显示文摘 | MA Ruyun XU Ling | 2010 | Applied Mathematics Letters2010，23，5： | 1 |
| 11 | Dual-mode broadcast encryption显示文摘Broadcast encryption (BE)is a technique to implement secure group-oriented communication.The concept of broadcast encryption was firstly introduced by Fiat and Naor [1].In a BE system,a broadcaster firstly chooses a receiver set and encrypts messages,and then broadcasts the ciphertext to all the users in the system while only the users in the chosen set can decrypt the ciphertext. | Yan ZHU Ruyun YU E CHEN Dijiang HUANG | 2018 | Science China(Information Sciences)2018，61，11： | 1 |
| 12 | Existence of solutions of nonlinear m-point boundary value problems 显示文摘 | Ruyun Ma | 2001 | J Math Anal Appl2001，256，2： | 1 |
| 13 | On the existence of positive solutions of fourth-order ordinary differential equations显示文摘 | Ma Ruyun Wang Haiyan | 1995 | Applicable Analysis1995，59，： | 1 |
| 14 | Existence of positive solutions for superlinear semipositone m-Point boundary-value problems\显示文摘 | MA Ruyun | 2003 | Proceedings at the Edmburgh Mathemat- ical Society2003，46，： | 1 |
| 15 | Positive solutions for a nonlinear three-point boundary value problem显示文摘 | Ma Ruyun | 1999 | Electronic Journal of Differential Equations1999，，34： | 1 |
| 16 | On the existence of positive solution of fourth order differential equation显示文摘 | Ma Ruyun Wan Haiyan | 1995 | Appl Anal1995，，59： | 1 |
| 17 | On the existence of positive solutions of fourth-order ordinary differential equations 显示文摘 | Ruyun Ma Haiyan Wang | 1995 | J Appl Anal1995，59，： | 1 |
| 18 | Multiplicity of positive solutions for second-order three-point boundary value problems显示文摘 | Ma Ruyun | 2000 | Computers and Mathematics with Applications2000，40，： | 1 |
| 19 | Existence theorem for a second order m-point boundary value problems显示文摘 | Ruyun Ma | 2001 | Applied Mathematics Letters2001，14，1： | 1 |
| 20 | Positive solutions for second-order three-point boundary value problems 显示文摘 | MA Ruyun | 2001 | Appl Math Lett2001，14，1： | 1 |
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