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Chinese Physics Letters 2013年第6期30卷 29-33页

作者： li feng-bo ZONG feng-De WANG Ying Institute of Nonlinear Physics Zhejiang Normal UniversityJinhua 321004

We study bose–Einstein condensate vortical solitons under both a bichromatic optical lattice and anharmonic *** vortical solitons are built in the form of a layer-chain structure made up of two fundamental vortices along the bichromatic optical lattice direction,which have not been reported before in the three-dimensional bose–Einstein condensate.A variation approach is applied to find the optimum initial solutions of vortical *** stabilities of the vortical solitons are confirmed by the numerical simulation of the time-dependent Gross–Pitaevskii *** particular,stable bose–Einstein condensate vortical solitons with fundamental vortices of different atomic numbers in the external potential within a range of experimentally achievable timescales are *** further manipulate the vortical solitons to an arbitrary position by steadily moving the bichromatic optical lattice,and find a stable region for the successful manipulation of vortical solitons without *** results provide insight into controlling and manipulating the bose–Einstein condensate vortical solitons for macroscopic quantum applications.

关键词： equation. Einstein solitons

Impacts of the north migration of China＇s rice production on its ecosystem service value during the last three decades (1980-2014)

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Journal of Integrative Agriculture 2017年第1期16卷 76-84页

作者： FANG Fu-ping feng Jin-fei li feng-bo PENG Shao-bing Huazhong Agricultural University Wuhan 430070 P.R. China China National Rice Research Institute Hangzhou 310006 P.R. China

The ecosystem services value （ESV） of rice system has received increasing attention in agricultural policy decision. Over the last three decades, China＇s rice production presented an obviously trend that moving towards north locations. However, the impacts of this migration on the ESV of rice production have not been well documented. In this paper, we analyzed the change of the ESV of rice production in China under ＂north migration＂ and ＂no migration＂ scenarios during 1980-2014 based on long-term historical data. The results showed that both the positive and negative ESVs of rice production were lower under ＂north migration＂ than under ＂no migration＂ scenarios. The total ESV during 1980-2014 was reduced by 15.8%. ＂North migration＂ significantly reduced the area-scaled ESV since the early 1990s; while its impact on yield-scaled ESV was not significant. The effects of＂north migration＂ on ESV showed great spatial variation. The greatest reduction in total and area-scaled ESV was observed in south locations. While the yield-scaled ESVs of most south locations were enhanced under ＂north migration＂ scenario. These results indicated that ＂north migration＂ has generated adverse effects on the ESV of rice production. An adjustment in the spatial distribution is essential to protecting the non-production benefits of rice ecosystem.

关键词： ecosystem service value north migration rice ecosystem spatial variation historical change

Spatial and temporal changes of paddy rice ecosystem services in China during the period 1980–2014

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Journal of Integrative Agriculture 2022年第10期21卷 3082-3093页

作者： CHEN Zhong-du li feng-bo XU Chun-chun JI Long feng Jin-fei FANG Fu-ping China National Rice Research Institute Hangzhou 310006P.R.China

The ecological systems services or multi-functionality of paddy rice cultivation are critical to the functioning of the Earth’s life-support *** estimated the ecosystem services value(ESV)of paddy rice during 1980-2014 across *** results indicated that the ESV of the paddy field in China showed an upward trend during this *** share of ESV on CO_(2)sequestration was the highest,followed by ESV on temperature cooling and greenhouse gas(GHG)*** yield-scaled ESVs of ZonesⅡ(southern rice-upland crops rotation regions)andⅢ(southern double rice production regions)were similar and significantly higher than the ESVs of ZonesⅠ(northeastern single rice production regions)and IV(Southwest rice-upland crops rotation regions).Between 1980 and 2014,the ESV of each region increased to varying degrees,except for the ESVs of Guangxi,Zhejiang,Fujian,and *** effects suggest the existence of a significant spatial-temporal variation in the total amount,structure,and density of ESV of paddy fields in China,which can further guide the development of future options for the adaptation of healthy rice production in China.

关键词： ecosystem services value economic evaluation rice production rice ecosystem spatial–temporal variation historical change

Antitumor activity of anti-type IV collagenase monoclonal antibody and its lidamycin conjugate against colon carcinoma

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World Journal of Gastroenterology 2005年第29期11卷 4478-4483页

作者： liang li Yun-Hong Huang Yi li feng-Qiang Wang bo-Yang Shang Yong-Su Zhen Institute of Medicinal Biotechnology Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100050 China

AIM： Type IV collagenase including MMP-2 and -9 plays an important role in cancer cell invasion and metastasis and is an attractive target for rnAb-directed therapy. The irnrnunoreactivity of rnAb 3G11, a rnAb directed against type Ⅳ collagenase in human colorectal carcinomas, was studied by irnrnuno-histochernical （IHC） staining, rnAb 3G11 was conjugated to an antiturnor antibiotic lidarnycin （LDM）. The antiturnor activity of 3G11-LDM conjugate against colon carcinoma was investigated in mice. METHODS： EliSA, gelatin zyrnography, and Western blot assay were used for the biological characterization of rnAb 3G11. The irnrnunoreactivity of rnAb 3G11 with human colorectal carcinomas was detected by IHC staining. The cytotoxicity of LDM and 3G11-LDM conjugate to human colon carcinoma HT-29 cells was examined by clonogenic assay and MTT assay. The therapeutic effect of conjugate 3G11-LDM was evaluated with colon carcinoma 26 in mice. RESULTS： As shown in EliSA, mAb 3Gll reacted specifically with type IV collagenase, while 3G11-LDM conjugate also recognized specifically its respective antigen. In IHC assay, mAb 3G11 showed positive irnrnunoreactivity in most cases of colorectal carcinoma, and negative irnrnunoreactivity in the adjacent non-malignant tissues. By gelatin zyrnography, the inhibition effect of rnAb 3G11 on the secretion activity of type IV collagenase was proved. In terms of IC50 values in MTT assay, the cytotoxicity of LDM to human colon carcinoma HT-29 cells was 10 000-fold more potent than that of rnitornycin C （MMC） and adriarnycin （ADM）. 3G11- LDM conjugate also displayed extremely potent cytotoxicity to human colon carcinoma HT-29 cells with an IC50 value of 5.6× 10^-19 mol/L. 3G11-LDM conjugate at the doses of 0.05 and 0.1 mg/kg inhibited the growth of colon carcinoma 26 in mice by 70.3 and 81.2%, respectively. CONCLUSION： mAb 3G11 is immunoreactive with human colorectal carcinoma and its conjugate with LDM is highly effective against colon carcinoma i

关键词： Type IV collagenase Monoclonal antibody lidarnycin Colon carcinoma

Treatment of advanced rectal cancer after renal transplantation

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World Journal of Gastroenterology 2011年第15期17卷 2058-2060页

作者： Hai-Yi liu Xiao-bo liang Yao-Ping li Yi feng Dong-bo liu Wen-Da Wang Department of Anal and Colorectal Surgery Shanxi Cancer Hospital Affiliated Cancer Hospital of Shanxi Medical University Taiyuan 030013 Shanxi Province China

Renal transplantation is a standard procedure for endstage renal disease today. Due to immunosuppressive drugs and increasing survival time after renal transplantation, patients with transplanted kidneys carry an increased risk of developing malignant tumors. In this case report, 3 patients with advanced rectal cancer after renal transplantation for renal failure were treated with anterior resection or abdominoperineal resection plus total mesorectal excision, followed by adjuvant chemotherapy. One patient eventually died of metastasized cancer 31 mo after therapy, although his organ grafts functioned well until his death. The other 2 patients were well during the 8 and 21 mo followup periods after rectal resection. We therefore strongly argue that patients with advanced rectal cancer should receive standard oncology treatment, including operation and adjuvant treatment after renal transplantation. Colorectal cancer screening in such patients appears justified.

关键词： Rectal cancer Renal transplantation Endstage renal disease Treatment Screening

Three-dimensional bose Einstein condensate vortex solitons under optical lattice and harmonic confinements

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Chinese Physics B 2013年第3期22卷 184-191页

作者：王莹宗丰德李峰波 Institute of Nonlinear Physics Zhejiang Normal University

We predict three-dimensional vortex solitons in a bose-Einstein condensate under a complex potential,which is the combination of a two-dimensional parabolic trap along the transverse radial direction and a one-dimensional optical-lattice potential along the z axis *** vortex solitons are built in the form of a layer-chain structure made of several fundamental vortices along the optical-lattice *** has not been reported before in the three-dimensional bose-Einstein *** using a combination of the energy density functional method with direct numerical simulation,we find three-dimensional vortex solitons with topological charges χ=1,χ=2,and χ=***,the macroscopic quantum tunneling and chirp phenomena of the vortex solitons are shown in the ***,the occurrence of macroscopic quantum tunneling provides the possibility for the experimental realization of quantum ***,we successfully manipulate the vortex solitons along the optical lattice *** stability limits for dragging the vortex solitons from an initial fixed position to a prescribed location are further pursued.

关键词： bose-Einstein condensates Gross-Pitaevskii equation vortex soliton manipulation

Elevation and Land Use Types Have Significant Impacts on Spatial Variability of Soil Organic Matter Content in Hani Terraced Field of Yuanyang County,China

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Rice science 2015年第1期22卷 27-34页

作者： li feng-bo LU Guang-de ZHOU Xi-yue NI Hui-xiang XU Chun-chun YUE Chao YANG Xiu-mei feng Jin-fei FANG Fu-ping Rice Science & Technology Information Center China National Rice Research Institute Agro-Tech Extension Center of Yuanyang

Soil organic matter （SOM） content is one of the most important indicators of the sustainability of soil. To maintain sustainable soil utilization and management in fragile Hani terraced field, it is meaningful to investigate the effects of topography and land use type on SOM content. Descriptive statistics and geostatistics were used to analyze the data and the kriging method was applied to map the spatial patterns of SOM content. The results showed that the mean SOM content was 32.76 g/kg, with a variation coefficient of 40%. The SOM content was affected by elevation and land use type. As the increase of elevation, the SOM content in Hani terraced field also increased obviously. The SOM content in tea garden, which is almost at high elevation, was the highest in all six land use types, and the SOM content decreased in a following sequence： tea garden 〉 paddy field 〉 corn field 〉 banana garden 〉 cassava field 〉 sugarcane field. In addition, at the same elevation, the paddy field had the highest SOM content compared with other land use types. All these results demonstrate that paddy field is the most efficient and suitable land use type for SOM conservation at high, middle or low elevations in the fragile Hani terraced field. In order to protect soil quality and maintain the sustainable agricultural development, it is necessary to maintain or even to enlarge the area of paddy field in Yuanyang county, Yunnan Province, China.

关键词： Hani terraced field elevation land use type geostatistics soil organic matter content

Application of robust estimation to pit deformation monitoring

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中国有色金属学会会刊：英文版 2005年第S1期15卷 62-64页

作者： li Ming-feng, YUAN bo (Nanjing University of Technology, Nanjing 210009, China)

To guarantee the safety and the quality of the deep pit construction of a high building, it is necessary to monitor the deformation of the supporting structure of the pit. At present, there are mainly two methods to monitor the geometric deformation of the supporting structure of the pit. One is to monitor the displacements of the tops of the piles; the other is to monitor the deep displacements of the piles. Based on the analysis of the characteristics of both the top monitoring data and the deep monitoring data, a united data processing method was put forward. A model of conicoid fitting model was chosen to describe the deformation surface of the pit, and then the robust estimation was adopted to avoid the influence of the gross errors existing in the observations. It was proved effective and accurate to analyze the deformation of the monitoring surface with this method. The steps of the method were concluded in detail.

关键词： pit displacement monitoring conicoid fitting model gross error robust estimation.

Effects of Rhizosphere Dissolved Oxygen Content and Nitrogen Form on Root Traits and Nitrogen Accumulation in Rice

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Rice science 2011年第4期18卷 304-310页

作者： ZHAO feng XU Chun-mei ZHANG Wei-jian ZHANG Xiu-fu li feng-bo CHEN Jian-ping WANG Dan-ying China Nationa l Rice Resea rch Institute Hangzhou 310006China Institute of Applied Ecology Nanjing Agricultura l Univer sityNanjing 210095China Institute of Food Crops Hubei Academy of Agricultura l SciencesWuhan 430064China

Dissolved oxygen and nitrogen form have important effects on rice root growth and nitrogen *** indica hybrid rice,Guodao 1,and a conventional japonica rice,Xiushui 09,were cultured in hypoxic nutrient solution with NH4NO3 or(NH4)2SO4 as the nitrogen source for six weeks in pools.A portion of the Guodao 1 seedlings after treatment in the pools for four weeks were transferred to a split-root system at different dissolved oxygen contents and cultured for an additional two ***,root morphological traits and nitrogen accumulation were *** the low rhizosphere dissolved oxygen content(0-1.0 mg/L),plant biomass was significantly increased under NH4NO3-N supply by about 69% in Guodao 1 and 41% in Xiushui 09 compared with those under NH4+-N *** results were observed for root number,maximum root length,root dry weight and root *** accumulations in roots and shoots were increased by 60% and 52% for Guodao 1,and by 41% and 33% for Xiushui 09,respectively,in the NH4NO3-N *** the split-root system,the high rhizosphere dissolved oxygen content(8.0-9.0 mg/L) promoted root growth and *** biomass was increased by 21.6%,root number by 27%,maximum root length by 14%,and root volume by 10%.Moreover,nitrogen accumulation in roots was increased by 11% under high rhizosphere oxygen *** conclusion,enhanced dissolved oxygen content and combined ammonium-nitrate nitrogen source have positive effects on root growth and nitrogen accumulation of rice plants.

关键词： nitrogen form dissolved oxygen rice root nitrogen accumulation

Algorithm of Dynamic Operation Process of Hydraulic Automatically Operated Canals with Constant-Downstream Level Gates

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Wuhan University Journal of Natural Sciences 2005年第6期10卷 1074-1080页

作者： ZHANG li-wei feng Xiao-bo WANG Chang-de Department of Water Conservancy Engineering and Hydropower Engineering Wuhan University Wuhan 430072 HubeiChina

On the basis of analysis the governing process of downstream water level gates AVIO and AVIS, a mathematical model for simulation of dynamic operation process of hydraulically automated irrigation canals instalied with AVIO and AVIS gates is presented, the main point of this rnathematical model is firstly applying a set of unsteady flow equations （St. Venant equations here） and treating the condition of gate movement as its dynamic boundary, and then deeoupling this interaction of gate movement with the change of canal flow. In this process, it is necessary to give the gateg open-loop transfer function whose input is water level deviation and output is gate discharge. The result of this simulation for a practical reach has shown it has satisfactory accuracy.

关键词： algorithm, hydraulically automatic gate AVIO gate AVIS gate downstream level control system unsteady flow dynamic process