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| 1 | Adsorption of Dibenzothiophene on Modified Activated Carbons for Ultra-Deep Desulfurization of Fuel Oils显示文摘 | JIANGZongxuan LIUYan SUNXiuping SHENZhiqi HANChongren LICan | 2003 | 催化学报2003，24，9： | 22 |
| 2 | Preparation and properties of PVP-protected nanoparticles on zeolite Beta显示文摘Uniform shape platinum nanocrystals with narrow size distribution and controlled average dimension are successfully embedded in a polymeric matrix and sup-ported on zeolite Beta. The surface structure and reactivity of nanometalclusters are investigated by TEM, EXAFS, CO adsorption and methane activation. The results indicate that nanometalparticles in PVP-Pt/Beta materials have high sur-face activity and reactivity to activate methane even at tem-perature of 373K. | MAJinghong RENShuhua LIRuifeng LICan XIEKechang | 2003 | Chinese Science Bulletin2003，48，23： | 1 |
| 3 | Upstream proton cyclotron waves: occurrence and amplitude dependence on IMF cone angle at Mars——from MAVEN observations显示文摘Proton cyclotron waves(PCWs)can be generated by ion pickup of Martian exospheric particles in the solar wind.The solar wind ion pickup process is highly dependent on the“IMF cone angle”—the angle between the solar wind velocity and the interplanetary magnetic field(IMF),which also plays an important role in the generation of PCWs.Using data from 2.15 Martian years of magnetic field measurements collected by the Mars Atmosphere and Volatile Evolution(MAVEN)mission,we have identified 3307 upstream PCW events.Their event number distribution decreases exponentially with their duration.A statistical investigation of the effects of IMF cone angle on the amplitudes and occurrence rates of PCWs reveals a slight tendency of PCWs’amplitudes to decrease with increasing IMF cone angle.The relationship between the amplitude and IMF cone angle is weak,with a correlation coefficient r=–0.3.We also investigated the influence of IMF cone angle on the occurrence rate of PCWs and found that their occurrence rate is particularly high for intermediate IMF cone angles(~18°–42°)even though highly oblique IMF orientation occurs most frequently in the upstream region of the Martian bow shock.We also conclude that these variabilities are not artefacts of temporal coverage biases in MAVEN sampling.Our results demonstrate that whereas IMF cone angle strongly influences the occurrence of PCWs,IMF cone angle may also weakly modulate their amplitudes in the upstream region of Mars. | Di Liu ZhongHua Yao Yong Wei ZhaoJin Rong LiCan Shan Stiepen Arnaud Espley Jared HanYing Wei WeiXing Wan | 2020 | Earth and Planetary Physics2020，4，1： | 1 |
| 4 | Preparation of Sb - doped ZnO nanostructures and studies on some of their properties显示文摘 | SALIHA LICAN YASERMIN CAGLAR MUJDAT CAGLAR | 2008 | Physica E2008，，41： | 1 |
| 5 | Truncated L1 Regularized Linear Regression:Theory and Algorithm显示文摘Truncated L1 regularization proposed by Fan in[5],is an approximation to the L0 regularization in high-dimensional sparse models.In this work,we prove the non-asymptotic error bound for the global optimal solution to the truncated L1 regularized linear regression problem and study the support recovery property.Moreover,a primal dual active set algorithm(PDAS)for variable estimation and selection is proposed.Coupled with continuation by a warm-start strategy leads to a primal dual active set with continuation algorithm(PDASC).Data-driven parameter selection rules such as cross validation,BIC or voting method can be applied to select a proper regularization parameter.The application of the proposed method is demonstrated by applying it to simulation data and a breast cancer gene expression data set(bcTCGA). | Mingwei Dai Shuyang Dai Junjun Huang Lican Kang Xiliang Lu | 2021 | Communications in Computational Physics2021，30，6： | 0 |
| 6 | A case study of large-amplitude ULF waves in the Martian foreshock显示文摘Foreshock ultralow frequency (ULF) waves constitute a significant physical phenomenon in the plasma environment of terrestrial planets. The occurrence of these waves, associated with backstreaming particles reflected and accelerated at the bow shock, implies specific conditions and properties of the shock and its foreshock. Using magnetic field and ion measurements from MAVEN, we report a clear event of ULF waves in the Martian foreshock. The interplanetary magnetic field connected to the Martian bow shock, forming a shock angle of ~51°. Indicating that this was a fast mode wave is the fact that ion density varied in phase with perturbations of the wave field. The peak frequency of the waves was about 0.040 Hz in the spacecraft frame, much lower than the local proton gyrofrequency (~0.088 Hz). The ULF waves had a propagation angle approximately 34° from ambient magnetic field and were accompanied by the whistler mode. The ULF waves displayed left-hand elliptical polarization with respect to the interplanetary magnetic field in the spacecraft frame. All these properties fit very well with foreshock waves excited by interactions between solar wind and backstreaming ions through right-hand beam instability. | LiCan Shan YaSong Ge AiMin Du | 2020 | Earth and Planetary Physics2020，4，1： | 0 |
| 7 | Interannual variability of carbon cycle implied by a 2-D atmospheric transport model显示文摘A 2-dimensional atmospheric transport model is deployed in a simplified CO 2 inverse study. Calculated carbon flux distribution for the interval from 1981 to 1997 confirms the existence of a terrestrial carbon sink in mid-high latitude area of North Hemisphere. Strong interannual variability exists in carbon flux patterns, implying a possible link with ENSO and other natural episodes such as Pinatubo volcano eruption in 1991. Mechanism of this possible link was investigated with statistic method. Correlation analysis indicated that in North Hemisphere, climatic factors such as temperature and precipitation, to some extend, could influence the carbon cycle process of land and ocean, thus cause considerable change in carbon flux distribution. In addition, correlation study also demonstrated the possible important role of Asian terrestrial ecosystems in carbon cycle. | LICan XULi ZHANGRen-jian | 2004 | Journal of Environmental Sciences2004，16，5： | 0 |
| 8 | Comparison between magnetic coplanarity and MVA methods in determining the normal of Venusian bow shock显示文摘With the measurements of magnetic field of Venus Express (VEX), magnetic coplanarity and minimum variance analysis (MVA) methods are analyzed and their validity is tested to determine the normal of Venusian bow shocks. It is found that MVA method is the better than magnetic coplanarity, and 95% shock crossings can be accurately determined by the method. However, the occurrence of the shock normal which is not determined accurately by magnetic coplanarity increases with the decrease of the solar zenith angle (SZA). At the same time, compared with quasi-parallel shocks, there is more occurrence of the shock normal which cannot be determined accurately by magnetic coplanarity for quasi-perpendicular shocks. | SHAN LiCan LU QuanMing ZHANG TieLong GAO XinLiang HUANG Can SU YanQing WANG Shui | 2013 | Chinese Science Bulletin2013，58，20： | 0 |
| 9 | A Novel RAFT Polymerization under UV Radiation at Ambient Temperature显示文摘 | Nianfa Yang, Lican Lu, Yuanli Cai (College of Chemistry, Xiangtan University, Xiangtan, Hunan 411105, China) | 2005 | 复旦学报(自然科学版)2005，44，5： | 0 |
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