|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Influence of mesoscale eddies on primary production in the South China Sea during spring inter-monsoon period显示文摘Mesoscale eddies have been suggested to have an impact on biological carbon fixation in the South China Sea(SCS). However, their overall contribution to primary production during the spring inter-monsoon period is still unknown. Based on large-scale biological and environmental in situ observations and synchronous remote sensing data, the distribution patterns of phytoplankton biomass and the primary production, and the role of mesoscale eddies in regulating primary production in different eddy-controlled waters were investigated. The results suggested that the surface chlorophyll a concentrations and water column integrated primary production(IPP) are significantly higher in cyclonic eddies and lower in the anticyclonic eddies as compared to that in non-eddy waters. Although eddies could affect various environmental factors, such as nutrients, temperature and light availability, nutrient supply is suggested to be the most important one through which mesoscale eddies regulated the distribution patterns of phytoplankton biomass and primary production. The estimated IPP in cyclonic and anticyclonic eddies are about 29.5% higher and 16.6% lower than the total average in the whole study area, respectively, indicating that the promotion effect of mesoscale cold eddies on the primary production was much stronger than the inhibition effect of the warm eddies per unit area. Overall, mesoscale eddies are crucial physical processes that affect the biological carbon fixation and the distribution pattern of primary production in the SCS open sea, especially during the spring inter-monsoon period. | HU Zifeng TAN Yehui SONG Xingyu ZHOU Linbin LIAN Xiping HUANG Liangmin HE Yinghui | 2014 | Acta Oceanologica Sinica2014，33，3： | 16 |
| 2 | Design theory and experimental investigation of the low frequency and high power rare earth magnetostrictive flextensional transducer (Ⅰ). Theoretical part显示文摘The energy relationships among all the elements, by which the magnetostrictive transducers are manufactured, in Finite Element Method (FEM) are analyzed, then the expres- sions of FEM dynamics equations and performances formulas for magnetostrictive transducers are derived. The vibrating modes of the class VII transducer and its shell vibration are calcu- lated theoretically and the results point out that there is a breathing mode and if the transducer works at this mode, the transducer will vibrate with a greater volume speed and source level. | HE Xiping (Applied acoustic institute, Shaanxi Teachers University Xi’an 710072) (College of Marine Engineering Northwestern Polytechnic University Xi’an 710O72) SUN Jincai LI Bin (Colloge of Marine Engineering Northwestern Polytechnic University Xi’an 71 | 2001 | Chinese Journal of Acoustics2001，20，4： | 6 |
| 3 | Determination of complex Young's modulus of viscoelastic bars using forced longitudinal vibration of slender rods显示文摘A method to identify complex Young’s modulus of viscoelastic materials using forced longitudinal vibration of slender rods is proposed.The method differs from the beam one.Experimental tests were carried out at room temperature with different lengths in 108 mm, 100 mm,90 mm,83.5 mm,80 mm.74.5 mm,70 mm for the polycarbonate bars,and the curves of ratios A2/A1 between two ends of a viscoelastic bar versus frequencies are obtained, furthermore,the corresponding 3 dB bandwidth and the storage and loss modulus can be calculated.Sufficient number of obtained complex Young’s modulus at different frequency allows us to calculate other ones using the least square method.If the step of the tested frequency is 5 Hz,the maximum error of results can be less than 6%.By comparison with the measurement methods which the previous literature mentioned,this new method simplifies the calculation,and the physical meaning appears apparently and clearly. | HE Xiping Avraham Benatar | 2013 | Chinese Journal of Acoustics2013，32，1： | 4 |
| 4 | Synthesis and light-emitting properties of 2-(N-phenyl-α-naphthylamino) and 2-dimesitylboron-7-(N-phenyl-α-naphthylamino)-9,9-diethylfluorene显示文摘A fluorescent organic triarylamine with a symmetric structure, 2,7-bis(N-α-naphthyl-phenylamino)-9,9- diethylfluorene (NPAEF) was synthesized using two methods, modified Ullmann coupling and modified palladium-catalyzed amination. An activated copper and a combination of Pd(OAc)2/P(t-Bu)3 and Pd(dba)2/P(t-Bu)3 were selected as catalysts to improve yields of reactions. These synthetic procedures were also successfully applied to an asymmetric 2-dimesitylboron-7-(N-phenyl-α-naphthylamino)-9,9-diethylfluorene (BNPEF). Photoluminescent emission peaks in solid film and in diluted solution of NPAEF were both observed at 461 nm, while the main emission peaks of BNPEF appeared at 422 nm in hexane, and at 480 nm in methanol. The double emission peaks of BNPEF in hexane reflected fine structure in the vibrational state. With an increasing polarity of solvent, the main PL emission peaks were red-shifted and vibrational fine structure disappeared. Additionally, energy levels of NPAEF were investigated and an electroluminescence (EL) device of ITO/PVK:NPAEF/Al was fabricated, which showed a turn-on voltage of 9 V and peaked at 462 nm. The EL spectrum was in good agreement with PL spectrum, which indicated that they were from the same emitting center in the device. | ZHANG WenGuan HE ZhiQun HUI GuanBao MU LinPing WANG YongSheng ZHAO ShengMin JING XiPing | 2009 | Science China Chemistry2009，52，7： | 3 |
| 5 | The silicothermic reduction of magnesium in flowing argon and numerical simulation of novel technology显示文摘The silicothermic reduction of magnesium was investigated by the non-isothermal thermoanalysis in flowing argon,while the traditional investigations of silicothermic process for magnesium reduction were carried out under vacuum conditions.Firstly,the thermal gravimetric(TG)and derivative thermogravimetric(DTG)characteristic of briquettes prepared with calcined dolomite,ferrosilicon and fluorite were characterized by the thermogravimetric analyzer(TGA)at different heating rates.The intrinsic chemical kinetic mechanism was identified as a formal chemical reaction with the Nth order type which showed apparent activation energy E and reaction order n were 290.168 kJ mol^(-1) and 1.076,respectively.Then,a novel technique of magnesium production without vacuum was put forward and a three-dimensional unsteady numerical model incorporating the chemical reaction,radiation,heat conduction and heat convection was established and simulated,which was verified by Pidgeon process and novel tech no logy.rIhe nu merical results showed that the cycle time of the novel technique could be reduced when the argon temperature was higher than 1343 K and the argon entrance velocity was over 0.05 m s^(-1).And the effect of the argon temperature on reduction degree was much larger than that of entrance velocity. | Yusi Che Chao Zhang Jianxun Song Xiaojia Shang Xiping Chen Jilin He | 2020 | Journal of Magnesium and Alloys2020，8，3： | 2 |
| 6 | Theory,preparation,properties and catalysis application in 2D graphynes-based materials显示文摘Carbon has three hybridization forms of sp^(-),sp^(2-)and sp^(3-),and the combination of diferent forms can obtain diferent kinds of carbon allotropes,such as diamond,carbon nanotubes,fullerene,graphynes(GYs)and graphdiyne(GDY).Among them,the GDY molecule is a single-layer two-dimensional(2D)planar structure material with highlyπ-conjugation formed by sp^(-)and sp^(2-)hybridization.GDY has a carbon atom ring composed of benzene ring and acetylene,which makes GDY have a uniformly distributed pore structure.In addition,GDY planar material have some slight wrinkles,which makes GDY have better self-stability than other 2D planar materials.The excellent properties of GDY make it attract the attention of researchers.Therefore,GDY is widely used in chemical catalysis,electronics,communications,clean energy and composite materials.This paper summarizes the recent progress of GDY research,including structure,preparation,properties and application of GDY in the field of catalysts. | Ning Zhang Jiayu Wu Taoyuan Yu Jiaqi Lv He Liu Xiping Xu | 2021 | Frontiers of physics2021，16，2： | 1 |
| 7 | Image de - noi- sing based on the dyadic wavele! transtonn and improved threshold 显示文摘 | Huang Zhenghnng Fang Bin He Xiping | 2009 | Muhiresolution and Information Processing2009，7，3： | 1 |
| 8 | Study on the radiated acoustic field of the curved vibrating plate 显示文摘 | ZHENG Ke HE Xiping ZHANG Pin | 2008 | Journal of Shaanxi Normal University (NATURAL SCIENCE EDITION)2008，36，3： | 1 |
| 9 | Research on the acoustic field directivity of the radiation field of the rectangular thin plate with free boundary 显示文摘 | ZHANG Yong HE Xiping LI Wei etal | 2010 | Journal of Shaanxi Normal University (NATURAL SCIENCE EDITION)2010，，04： | 1 |
| 10 | Study on the broadband tonpilz transducer with a single hole显示文摘 | He Xiping Hu Jing | 2009 | Ultrasonics2009，49，： | 1 |
| 11 | Image Enhancement and Minutia Matching in Fingerprint Verification显示文摘 | Yuliang He Jie Tian Xiping Luo | 2003 | Pattern Recognition Letter2003，24，： | 1 |
| 12 | Image enhancement and minutia matching in fingerprint verification显示文摘 | He Yuliang Tian Jie Luo Xiping | 2003 | Pattern Recognition Letter2003，24，： | 1 |
| 13 | Image enhancement and minutiae matching in fingerprint verification显示文摘 | TIAN Jie LUO Xiping | 2003 | Pattern Recognition Letters2003，24，9： | 1 |
| 14 | Image Enhancement and Minutia Matching In Fingerprint Verification显示文摘 | Jie Tian Xiping Luo | 2003 | Pattern Recognition Letter2003，24，： | 1 |
| 15 | Image enhancement and minutiae matching in fingerprint verification显示文摘 | He Yuliang Tian Jie Luo Xiping Zhang Tanghui | 2003 | Pattern Recognition Letters2003，24，910： | 1 |
| 16 | Image enhancement and minutiae matching in fingerprint verification显示文摘 | Yuliang He JieTian Xiping Luo | 2002 | IEEE2002，，12： | 1 |
| 17 | Fingerprint matching based on global comprehensive similarity 显示文摘 | HE Yuliang TIAN Jie LUO Xiping | 2006 | IEEE Transactions on Pattern Analysis and Machine Intelli- gence2006，28，6： | 1 |
| 18 | Image Enhancement and Minutia Matching in Fingerprint Verification显示文摘 | He Yuliang Tian Jie Luo Xiping | 2003 | Pattern Recognition Letters2003，24，911： | 1 |
| 19 | Perspectives on water science: transport and application of confined water显示文摘The confinements of water can be divided into two main categories,namely,the confinements on surface or interface and the confinements in bulk water.By adding ions or applying electric field,the intensity and distribution of the hydrogen bonds can be greatly affected.These are collectively known as confinement on water surface or interface,which has potential applications in life science and industries involving evaporation control.Confined bulk water could be found everywhere in nature,such as in granular and porous materials,macromolecules and gels,etc.The investigation of the physical properties and the transports of the confined bulk water will contribute to understanding certain types of life activities such as the water transport in plant and in new application of extracting the shale oil and water. | ZENG XiPing WU JinBo LI ShunBo CHAU YeungYeung HE GuangHong WEN WeiJia YANG GuoZhen | 2014 | Science China(Physics,Mechanics & Astronomy)2014，57，5： | 0 |
| 20 | Colloidal Gold Test Strip for the Detection of Fluoroquinolones in Foods Using an Analyzer显示文摘A test strip was developed to rapidly detect fluoroquinolones in foods by colloidal gold immunochromatography method in combination with a food safety analyzer. The results showed that the test strip has the detection sensitivity of 20 μg/L for enrofloxacin, sarafloxacin, difloxacin, ofloxacin, norfloxacin, ciprofloxacin, pefloxacin, flumequine and danofloxacin, and the detection sensitivity of 40 μg/L for enoxacin and oxolinic acid. The test strip consumes only 10 min for detection, and the false positive rate and the false negative rate are both zero. The test strip can accurately, reliably and easily detect residual fluoroquinolones in foods, and is suitable for on-site detection of a large number of samples. | Fangfang JIA Yuping WAN Linchen WANG Xiping WANG Zhaoqin WANG Fangyang HE Haifeng CUI Jing LI | 2019 | Agricultural Biotechnology2019，8，2： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员