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Strong Coupling of a Meta-Diatom to a Plasmonic Nanocavity

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Chinese Physics Letters 2013年第8期30卷 148-151页

作者： CHEN San lu hong-yan LIU Jian-Qiang ZHU Yong-Yuan School of Physics and Electronic Information Huaibei Normal UniversityHuaibei 235000 School of Science Jiujiang UniversityJiujiang 332005 National Laboratory of Solid State Microstructures and Department of PhysicsNanjing UniversityNanjing 210093

A strong coupling meta-diatom-plasmonic nanocavity is proposed and numerically *** the meta-diatomic sizes are gradually increased,the meta-diatomic electric dipole and quadrupole resonances could strongly couple to those of the *** characteristic anticrossing behaviors of three hybrid modes manifest the occurrence of the strong coupling from the transmission spectra,with Rabi-type splittings at about 40.8 meV and 128.4 meV for dipole interaction,and 11.8 meV and 72.7 meV for quadrupole interaction,*** also present the coupling strength dependence on meta-atomic positions,in which one meta-atomic position is fixed and the other is *** average Rabi-type splittings of three polariton modes are used to evaluate the coupling strength of the meta-atomic position *** corresponding Rabi-type oscillation in the time domain is also presented,which is obviously different from the one of a single meta-atom strongly coupling to a nanocavity.

关键词： coupling dipole splitting

Long-Term Effect of Fertilizer and Rice Straw on Mineral Composition and Potassium Adsorption in a Reddish Paddy Soil

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Journal of Integrative Agriculture 2013年第4期12卷 694-710页

作者： LIAO Yu-lin ZHENG Sheng-xian NIE Jun XIE Jian lu yan-hong QIN Xiao-bo Soil and Fertilizer Institute of Hunan Province Hunan Academy of Agricultural Sciences/Scientific Observing and Experimental Station of Arable Land Conservation (Hunan) Ministry of Agriculture Institute of Environment and Sustainable Development in Agriculture Chinese Academy of Agricultural Sciences/The Key Laboratory for Agro-Environment Ministry of Agriculture

Increasing K＋ adsorption can be an effective alternative in building an available K pool in soils to optimize crop recovery and minimize losses into the environment. We hypothesized that long-term fertilization might change K＋ adsorption because of changes in the chemical and mineralogical properties of a rice （Oryza sativa L.）. The aims of this study were （i） to determine clay minerals in paddy soil clay size fractions using X-ray diffraction methods and a numerical diagramdecomposition method; （ii） to measure K＋ adsorption isotherms before and after H202 oxidation of organic matter, and （iii） to investigate whether K＋ adsorption is correlated with changes in soil chemical and mineral properties. The 30-yr longterm fertilization treatments caused little change in soil organic C （SOC） but a large variation in soil mineral composition. The whole-clay fraction （〈5 Jam） corresponded more to the fertilization treatment than the fine-clay fraction （〈1 gin） in terms of percentage of illite peak area. The total percentage of vermiculite-chlorite peak area was significantly negatively correlated with the total percentage ofillite peak area in the 〈5 lam soil particles （R=-0.946, P〈0.0006）. Different fertilization treatments gave significantly different results in K＋ adsorption. The SOC oxidation test showed positive effects of SOC on K＋ adsorption at lower K＋ concentration （≤120 mg L-0 and negative effects at higher K＋ concentration （240 mg L-l）. The K＋ adsorption by soil clay minerals after SOC oxidization accounted for 60-158% of that by unoxidized soils, suggesting a more important role of soil minerals than SOC on K＋ adsorption. The K＋ adsorption potential was significantly correlated to the amount of poorly crystallized illite present （R--0.879, P=0.012）. The availability of adsorbed K＋ for plant growth needs further study.

关键词： long-term experiment mineral composition potassium adsorption reddish paddy soil

Key technique of a detection sensor for coal mine wire ropes

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Mining Science and Technology 2009年第2期19卷 170-175页

作者： WANG hong-yao XU Zhao HUA Gang TIAN Jie ZHOU Bing-bing lu yan-hong CHEN Feng-jun School of lnformation and Electrical Engineering China University of Mining ＆ Technology Xuzhou Jiangsu 221008 China School of Mechanical Electronic and Information Engineering China University of Mining ＆ Technology Beijing 100083 China School of Information and Technologies J12 University of Sydney NSW 2006 Australia

Wire ropes,employed extensively in coal mine hoists and transportation systems are subject to damage due to wear,corrosion and *** extent of damage and the carrying capacity of ropes are closely related to the sense of safety by staff and *** flux leakage detection method(MFL),as an effective method,is these days widely used in detection of broken strands of wire *** order to improve the accuracy of detection of flaws in wire ropes by magnetic flux leakage(MFL),the effect of the distance between a sensor and the surface of a wire rope(i.e.,lift-off) on detection by magnetic flux leakage was *** analysis of the main principles for the choice of lift-off is described by us and a new method that improves the structure of the detector is proposed from the point of view of the design of a magnetic circuit,to restrain the impact of fluctuations of sensor *** effect of this kind of method is validated by simulation and *** results show that the detection sensitivity is markedly increased by this ***,the signal-to-noise ratio(SNR) can be increased by over 28%.This method will lend itself to offer reliable scientific information to optimize the structure of excitation devices and improve the accuracy of MFL detection.

关键词： coal mine wire rope magnetic flux leakage detection lift-off

Management of rice straw with relay cropping of Chinese milk vetch improved double-rice cropping system production in southern China

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Journal of Integrative Agriculture 2020年第8期19卷 2103-2115页

作者： ZHOU Xing LIAO Yu-lin lu yan-hong Robert MREES CAO Wei-dong NIE Jun LI Mei Crop Research Institute Hunan Academy of Agricultural SciencesChangsha 410125P.R.China Soil and Fertilizer Institute of Hunan Province Hunan Academy of Agricultural SciencesChangsha 410125P.R.China Scientific Observing and Experimental Station of Arable Land Conservation(Hunan) Ministry of Agriculture and Rural AffairsChangsha 410125P.R.China Scotland’s Rural College Edinburgh EH93JGUK Key Laboratory of Plant Nutrition and Fertilizer Ministry of Agriculture and Rural Affairs/Institute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing 100081P.R.China

Improved utilization of rice(Oryza sativa L.)straw and Chinese milk vetch(Astragalus sinicus L.,vetch)has positive effects on rice *** far,few studies have investigated the productivity of vetch under different residue management practices in double-rice cropping *** effects of rice straw on the growth and nutrient accumulation of vetch across seven years(2011–2017)and the subsequent effects of rice straw and vetch on two succeeding rice crops in a vetch–rice–rice cropping system,with the vetch established by relay cropping,were *** seven-year double-rice experiment consisted of the following treatments:(1)100%chemical fertilizer(F-F100);(2)only vetch without chemical fertilizer(M-Con);(3)80%chemical fertilizer plus vetch plus a low-cutting height(low-retained stubble)with the removal of straw(M-F80);(4)80%chemical fertilizer plus vetch plus a low-cutting height with the retention of straw(M-F80-LR);(5)80%chemical fertilizer plus vetch plus a high-cutting height(high-retained stubble)with the retention of straw(M-F80-HR);and(6)no fertilizer(F-Con).The yields of the two rice crops after vetch were not affected by either the cutting height of stubble with retention of straw or by the management of straw(retention ***)with low-cutting height of *** yields of the two rice crops after vetch were significantly higher for M-F80-HR than for M-F80-LR,but the relative contributions of the high-cutting height and straw retention to the higher rice yield could not be determined in this *** yield stability of the double-rice grain in M-F80-HR was also increased,as determined by a sustainable yield *** increases in vetch biomass and nutrient uptake were observed in the fertilized treatments during the rice season compared with the unfertilized *** M-F80-HR plots,improvements in the growing environment of the vetch by conserving soil water content were associated with the highest vetch biomass,nutrient uptake,a

关键词： double-rice cropping system Chinese milk vetch biomass productivity rice straw sustainable yield index

Substitution of chemical fertilizer by Chinese milk vetch improves the sustainability of yield and accumulation of soil organic carbon in a double-rice cropping system

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Journal of Integrative Agriculture 2019年第10期18卷 2381-2392页

作者： ZHOU Xing lu yan-hong LIAO Yu-lin ZHU Qi-dong CHENG Hui-dan NIE Xin CAO Wei-dong NIE Jun College of Resources and Environment Hunan Agricultural UniversityChangsha 410128P.R.China Soil and Fertilizer Institute of Hunan Province Hunan Academy of Agricultural SciencesChangsha 410125P.R.China Scientific Observing and Experimental Station of Arable Land Conservation (Hunan) Ministry of AgricultureChangsha 410125P.R.China College of Bioscience and Biotechnology Hunan Agricultural UniversityChangsha 410128P.R.China Longping Branch Graduate School of Hunan University Changsha 410125P.R.China Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural SciencesBeijing 100081P.R.China

The double-rice cropping system is a very important intensive cropping system for food security in China. There have been few studies of the sustainability of yield and accumulation of soil organic carbon (SOC) in the double-rice cropping system following a partial substitution of chemical fertilizer by Chinese milk vetch (Mv). We conducted a 10-year (2008–2017) field experiment in Nan County, South-Central China, to examine the double-rice productivity and SOC accumulation in a paddy soil in response to different fertilization levels and Mv application (22.5 Mg ha^–1). Fertilizer and Mv were applied both individually and in combination (sole chemical fertilizers, Mv plus 100, 80, 60, 40, and 0% of the recommended dose of chemical fertilizers, labeled as F100, MF100, MF80, MF60, MF40, and MF0, respectively). It was found that the grain yields of double-rice crop in treatments receiving Mv were reduced when the dose of chemical fertilizer was reduced, while the change in SOC stock displayed a double peak curve. The MF100 produced the highest double-rice yield and SOC stock, with the value higher by 13.5 and 26.8% than that in the F100. However, the grain yields increased in the MF80 (by 8.4% compared to the F100), while the SOC stock only increased by 8.4%. Analogous to the change of grain yield, the sustainable yield index (SYI) of double rice were improved significantly in the MF100 and MF80 compared to the F100, while there was a slight increase in the MF60 and MF40. After a certain amount of Mv input (22.5 Mg ha^–1), the carbon sequestration rate was affected by the nutrient input due to the stimulation of microbial biomass. Compared with the MF0, the MF100 and MF40 resulted in a dramatically higher carbon sequestration rate (with the value higher by 71.6 and 70.1%), whereas the MF80 induced a lower carbon sequestration rate with the value lower by 70.1% compared to the MF0. Based on the above results we suggested that Mv could partially replace chemical fertiliz

关键词： Chinese milk vetch fertilizer application levels,rice yield soil organic carbon double-rice cropping system

Relationship between AQP4 expression and structural damage to the blood-brain barrier at early stages of traumatic brain injury in rats

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Chinese Medical Journal 2013年第22期126卷 4316-4321页

作者： lu hong LEI Xiao-yan HU Hui HE Zhan-ping Department of Radiology Department of Nursing Affiliated Haikou Hospital Xiangya School of Medicine Central South University Haikou Hainan 570208 China

Background Although some studies have reported that aquaporin-4 （AQP4） plays an important role in the brain edema after traumatic brain injury （TBI）, little is known about the AQP4 expression in the early stage of TBI, or about the correlation between the structural damage to the blood-brain barrier （BBB） and angioedema. The aim of this project was to investigate the relationship between AQP4 expression and damage to the BBB at early stages of TBI. Methods One hundred and twenty healthy adult Wistar rats were randomly divided into two groups： sham operation group （SO） and TBI group. The TBI group was divided into five sub-groups according to the different time intervals： 1, 3, 6, 12, and 24 hours. The brains of the animals were taken out at different time points after TBI to measure brain water content. The cerebral edema and BBB changes in structure were examined with an optical microscopy （OM） and transmission electron microscopy （TEM）, and the IgG content and AQP4 protein expression in traumatic brain tissue were determined by means of immunohistochemistry and Western blotting. The data were analyzed with SPSS 13.0 statistical software. Results In the SO group, tissue was negative for IgG, and there were no abnormalities in brain water content or AQP4 expression. In the TBI group, brain water content significantly increased at 6 hours and peaked at 24 hours following injury. IgG expression significantly increased from 1 to 6 hours following injury, and remained at a high level at 24 hours. Pathological observation revealed BBB damage at 1 hour following injury. Angioedema appeared at 1 hour, was gradually aggravated, and became obvious at 6 hours. Intracellular edema occurred at 3 hours, with the presence of large glial cell bodies and mitochondrial swelling. These phenomena were aggravated with time and became obvious at 12 hours. In addition, microglial proliferation was visible at 24 hours. AQP4 protein expression were reduced at 1 hour, lowest at 6 hours, and

关键词： brain injury, edema, blood-brain barrier, aquaporins animal experiment

Two-Dimensional Cavity Resonant Modes of Si Based Bragg Reflection Ridge Waveguide

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Chinese Physics Letters 2011年第6期28卷 225-228页

作者： CHEN San lu hong-yan CHEN Kun-Ji XU Jun MA Zhong-Yuan LI Wei HUANG Xin-Fan School of Physics and Electronic Information Huaibei Normal UniversityHuaibei 235000 State Laboratory of Solid State Microstructures and Department of Physics Nanjing UniversityNanjing 210093

Si-based ridge-waveguides with Bragg reflectors are fabricated based on our *** resonant peaks could be obviously identified from the photoluminescence spectra,and field patterns of these resonant peaks,simulated by the finite difference time domain(FDTD)method,confirm that these peaks originate from cavity *** resonant wavelengths and spatial angular distribution are given by the resonant models,which agree well with the experimental ***,a simple method is proposed to testify the experimental and theoretical *** devices based on Bragg reflectors may have potential applications in light-emitting diodes,lasers and integrated photonic circuits.

关键词： Waveguide resonant diodes

The effects of co-utilizing green manure and rice straw on soil aggregates and soil carbon stability in a paddy soil in southern China

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Journal of Integrative Agriculture 2023年第5期22卷 1529-1545页

作者： ZHANG Zi-han NIE Jun LIANG Hai WEI Cui-lan WANG Yun LIAO Yu-lin lu yan-hong ZHOU Guo-peng GAO Song-juan CAO Wei-dong College of Resources and Environmental Sciences Nanjing Agricultural UniversityNanjing 210095P.R.China Soil and Fertilizer Institute of Hunan Province Hunan Academy of Agricultural SciencesChangsha 410125P.R.China College of Environment and Ecology Jiangsu Open UniversityNanjing 210036P.R.China Key Laboratory of Plant Nutrition and Fertilizer Ministry of Agriculture and Rural Affairs/Institute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing 100081P.R.China

The co-utilization of green manure (GM) and rice straw (RS) in paddy fields has been widely applied as an effective practice in southern ***,its effects on soil aggregate and soil organic carbon (SOC) stability remain *** the present study,the effect of GM,RS,and co-utilization of GM and RS on particle size distribution of soil aggregates and SOC density fractions were measured in a field *** experiment included six treatments,i.e.,winter fallow (WF) without RS return (Ctrl),WF with 50%RS return (1/2RS),WF with 100%RS return (RS),GM without RS return (GM),GM with 50%RS return (GM1/2RS) and GM with 100%RS return (GMRS).The results showed that the proportion of small macro-aggregates (0.25–2 mm) and the mean weight diameter (MWD) of aggregates in the GMRS treatment was greater (by 18.9 and 3.41%,respectively) than in the RS treatment,while the proportion of silt+clay particles (lusion,co-utilizing green manure and rice straw cultivated the SOC pool by increasing the concentration of fLOC and improved soil carbon stability by promoting the sequestration of organic carbon in iPOC as a form of physical protection.

关键词： soil aggregation milk vetch rice straw SoC density fractions C stability paddy soil

多孔介质平板通道与空通道的速度分布和温度分布的解析解

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工程热物理学报 2018年第3期39卷 633-639页

作者：逯彦红段国林河北工业大学机械工程学院天津300132 天津职业大学机电工程与自动化学院天津300410

建立了平板通道内填充多孔介质和空通道两种情况传热模型,求解动量方程和能量方程的解析解,获得速度分布和温度分布,分析Da数、Bi数、有效导热系数比和孔隙率等参数对温度分布、局部非热平衡程度以及Nu数的影响。计算求解表明,通道内填... 详细信息

建立了平板通道内填充多孔介质和空通道两种情况传热模型,求解动量方程和能量方程的解析解,获得速度分布和温度分布,分析Da数、Bi数、有效导热系数比和孔隙率等参数对温度分布、局部非热平衡程度以及Nu数的影响。计算求解表明,通道内填充多孔介质后流体的速度分布和温度分布更均匀,速度边界层更薄;随着Bi数和有效导热系数比k的增大,θ_s-θ_f的值减小,局部非热平衡程度减弱,Bi越大,θ_s与θ_f越接近,即越接近局部热平衡状态。孔隙率对局部非热平衡程度和Nu数的影响不明显;Nu数随着有效导热系数比k和Da数的减小而增大,随着Bi数和孔隙率的增大而增大,当k1时,变化不明显.

关键词：多孔介质非局部热平衡模型速度分布温度分布解析解