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Coupled Solitons in Alternating Heisenberg Ferromagnetic Chains with a Small Magnon Band Gap

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Chinese Physics Letters 2001年第10期18卷 1316-1318页

作者： ZHU shan-hua huaNG Guo-Xiang Key Laboratory for Optical and Magnetic Resonance Spectroscopy and Department of Physics East China Normal UniversityShanghai 200062 Physics Group Zhuzhou Institute of TechnologyZhuzhou 412008

The coupled soliton excitations in an alternating Heisenberg ferromagnetic chain with a small magnon band gap are considered. Based on a quasi-discrete multiple scale approach, a set of coupled mode equations is derived which describes the dynamics of strongly coupled acoustic upper cut-off and optical lower cut-off modes. Coupled magnetic band gap soliton solutions are explicitly provided and their frequency properties are discussed.

关键词： Heisenberg soliton magnetic

Effects of β-cyclodextrins on the enzymatical hydrolysis of chiral dichlorprop methyl ester

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Journal of Environmental Sciences 2005年第2期17卷 237-240页

作者： WENYue-zhong ZHOUshan-shan FANGZhao-hua LIUWei-ping InstituteofEnvironmentScience ZhejiangUniversityHangzhou310029China

The effect of β-cyclodextrins(β-CDs) on the enzymatical hydrolysis of chiral dichlorprop methyl ester (DCPPM) was studied. Four kinds of β-cyclodextrins(β-cyclodextrin, Partly methylated-CD(PM-β-CD), hydroxypropyl-cyclodextrin(HP-β-CD) and carboxymethyl-cyclodextrin(CM-β-CD)) were used. Compared with 100% DCPPM in the absence of β-cyclodextrins, the activity of lipase decreased with the increase of β-cyclodextrin and PM-β-cyclodextrin. However, CM-β-cyclodextrin stimulated the lipase activity. The inhibition effect of β-cyclodextrin and PM-β-cyclodextrin on the hydrolysis of DCPPM is affected by many factors other than degree of the methylation blocking the active site of lipase. UV-Vis and Fourier transform infrared(FTIR) spectroscopy studies of the complexation of aqueous DCPPM with β-CDs provide fresh insight into the molecular structure of the complex and explain the effects of β-CDs on enzymatical hydrolysis of chiral DCPPM. Data showed that inclusion complexes had formed by complexation of the CM-β-CD with DCPPM and the solubility of DCPPM was increased in water, which leaded to the increased lipase activity.

关键词： cyclodextrins enzyme hydrolysis chiral dichlorprop

Adjuvant chemotherapy after liver transplantation for hepatocellular carcinoma: a systematic review and a meta-analysis

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Hepatobiliary & Pancreatic Diseases International 2015年第3期14卷 236-245页

作者： hua-shan Lin Ren-hua Wan Liang-Hui Gao Jian-Feng Li Ren-Feng shan Jun Shi Department of Hepatobiliary and Pancreatic Surgery The First Affiliated Hospital College of Medicine Nanchang University

BACKGROUND： Hepatocellular carcinoma （HCC） is one of the most common tumors worldwide and liver transplanta- tion （LT） is considered as the best therapeutic option for patients with HCC combined with cirrhosis. However, tumor recurrence after LT for HCC remains the major obstacle for long-term survival. The present study was to evaluate the effi- cacy and necessity of adjuvant chemotherapy in patients with HCC who had undergone LT.

关键词： adjuvant chemotherapy liver transplantation hepatocellular carcinoma recurrence meta-analysis

Large and unusual presentation of gallbladder adenoma: A case report

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World Journal of Clinical Cases 2020年第21期8卷 5415-5419页

作者： Lin-Li Cao hua shan Department of Medical Imaging Jiangsu Second Hospital of Traditional Chinese MedicineNanjing 210017Jiangsu ProvinceChina

BACKGROUND Gallbladder adenoma is a relatively rare benign tumor with a potential for malignant transformation if found to be greater than 1 cm in *** SUMMARY Herein,we report a case of a 51-year-old female with large 3 cm×3 cm mass of gallbladder adenoma that was misdiagnosed as adenocarcinoma due to its clinical *** tomography and magnetic resonance imaging scans showed an irregularly shaped cauliflower-like lump in the gallbladder measuring 38 mm×32 mm corresponding to a malignant tumor and several gallbladder stones with low diffusion-weighted imaging and equisignal of T1-weighted imaging and T2-weighted imaging;moreover,the CA 19-9 levels were very high(184.1 U/mL).Pathology reports after tumor resection showed adenoma with moderate epithelial atypia and moderate atypia in the focal area with fine pedicle and no clear *** Computed tomography and magnetic resonance imaging scans need to be carefully scrutinized in certain rare cases of adenomas with abnormal imaging features.

关键词： Gallbladder adenoma Computed tomography Magnetic resonance imaging Case report Imaging Misdiagnose

Physiological Responses of Two Wheat Cultivars to Nitrogen Starvation

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Agricultural Sciences in China 2011年第10期10卷 1577-1585页

作者： WANG Xiao-li shan Yu-hua WANG Su-hua DU Yan FENG Ke Key Laboratory of Crop Genetics and Physiology of Jiangsu Province Yangzhou University Yangzhou 225009 P.R. China Technical Service Center for Agro-Environmental Safety of Jiangsu Province Yangzhou University Yangzhou 225127 P.R. China

Plants need to be efficient in nutrient management, especially when they face the temporal nutrient defficiencies. Understanding how crops respond to nitrogen （N） starvation would help in the selection of crop cultivars more tolerant to N deficiency. In the present work, the physiological responses of two wheat cultivars, Yannong 19 （YN） and Qinmai 11 （QM）, to N starvation conditions were investigated. The two cultivars differed in biomass and N rearrangement between shoots and roots during N starvation. QM allocated more N to roots and exhibited higher root/shoot biomass ratio than YN. However, tissue measurement indicated that both cultivars had similar nitrate content in leaves and roots and similar remobilization rate in roots. Microelectrode measurement showed that vacuolar nitrate activity （concentration） in roots of QM was lower than that in roots of YN, especially in epidermal cells. Nitrate remobilization rates from root vacuoles of two cultivars were also identical. Moreover, vacuolar nitrate remobilization rate was proportional to vacuolar nitrate activity. During N starvation, nitrate reductase activity （NRA） was decreased but there were no significant differences between the two cultivars. Nitrate efflux from roots reduced after external N removal and QM seemed to have higher nitrate efflux rate.

关键词： nitrogen starvation wheat nitrate remobilization root/shoot ratio ion-selective microelectrodes

Saturated output feedback tracking control for robot manipulators via fuzzy self-tuning

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Journal of Zhejiang University-Science C(Computers and Electronics) 2010年第12期11卷 956-966页

作者： hua-shan LIU Shi-qiang ZHU Zhang-wei CHE State Key Lab of Fluid Power Transmission and Control Zhejiang University Hangzhou 310027 China College of lnformation Science and Technology Donghua University Shanghai 201620 China

This paper concerns the problem of output feedback tracking (OFT) control with bounded torque inputs of robot manipulators, and proposes a novel saturated OFT controller based on fuzzy self-tuning proportional and derivative (PD) gains. First, aiming to accomplish the whole closed-loop control with only position measurements, a linear filter is involved to generate a pseudo velocity error signal. Second, different from previous strategies, the arctangent function with error-gain is applied to ensure the boundedness of the torque control input, and an explicit system stability proof is made by using the theory of singularly perturbed systems. Moreover, a fuzzy self-tuning PD regulator, which guarantees the continuous stability of the overall closed-loop system, is added to obtain an adaptive performance in tackling the disturbances during tracking control. Simulation showed that the proposed controller gains more satisfactory tracking results than the others, with a better dynamic response performance and stronger anti-disturbance capability.

关键词： Robot Tracking systems Bounded torque input Fuzzy control Output feedback

Estimation of the Aerosol Radiative Effect over the Tibetan Plateau Based on the Latest CALIPSO Product

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Journal of Meteorological Research 2018年第5期32卷 707-722页

作者： Rui JIA Yuzhi LIU shan hua Qingzhe ZHU Tianbin SHAO Key Laboratory for Semi-Arid Climate Change of the Ministry of Education College of Atmospheric SciencesLanzhou University

Based on the CALIPSO （Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation） Version 4.10 products released on 8 November 2016, the Level 2 （L2） aerosol product over the Tibetan Plateau （TP） is evaluated and the aerosol radiative effect is also estimated in this study. As there are still some missing aerosol data points in the day-time CALIPSO Version 4.10 L2 product, this study re-calculated the aerosol extinction coefficient to explore the aer-osol radiative effect over the TP based on the CALIPSO Level 1 （L1） and CloudSat 2B-CLDCLASS-LIDAR products. The energy budget estimation obtained by using the AODs （aerosol optical depths） from calculated aerosol extinction coefficient as an input to a radiative transfer model shows better agreement with the Earth＇s Radiant En- ergy System （CERES） and CloudSat 2B-FLXHR-LIDAR observations than that with the input of AODs from aero- sol extinction coefficient from CALIPSO Version 4.10 L2 product. The radiative effect and heating rate of aerosols over the TP are further simulated by using the calculated aerosol extinction coefficient. The dust aerosols may heat the atmosphere by retaining the energy in the layer. The instantaneous heating rate can be as high as 5.5 K day^-1 de-pending on the density of the dust layers. Overall, the dust aerosols significantly affect the radiative energy budget and thermodynamic structure of the air over the TP, mainly by altering the shortwave radiation budget. The signific-ant influence of dust aerosols over the TP on the radiation budget may have important implications for investigating the atmospheric circulation and future regional and global climate.

关键词： aerosol radiative effect Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) Version 4.10 product Tibetan Plateau

Quantitative analysis of the effect of the PAY1 gene on rice canopy structure during different reproductive stages

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Journal of Integrative Agriculture 2022年第12期21卷 3488-3500页

作者： WEI Cui-lan CAO Bing-shuai hua shan LI Bao-guo College of Environment and Ecology Jiangsu Open UniversityNanjing 210036P.R.China Nanjing Institute of Environmental Sciences Ministry of Ecology and EnvironmentNanjing 210042P.R.China Institute of Agricultural Equipment Zhejiang Academy of Agricultural SciencesHangzhou 310021P.R.China College of Land Science and Technology China Agricultural UniversityBeijing 100193P.R.China

The leaf and stem types are core structural characteristics of the rice phenotype that determine the light interception ability of the canopy and directly affect crop *** PLANT ARCHITECTURE AND YIELD 1(PAY1)gene has been shown to alter the prostrate growth habit of wild rice and to inhibit the wild rice prostrate growth gene PROSTRATE GROWTH 1(PROG1).In this paper,the wild rice introgression line YIL55,which contains the PROG1 gene;its mutant,PAY1;and its parent,TQ,were used as test varieties to construct three-dimensional(3D)canopy structure models based on 3D digital assay *** this basis,quantitative analyses of the PAY1 gene and the plant leaf and stem types at the jointing,heading and filling stages were *** the influence of the PAY1 gene,the plant stem and leaf angles from vertical decreased significantly;the plants were upright,with larger leaves;the culm angle changed from loose to compact;and the average tiller angle during the three key reproductive stages decreased from 44.9,28.5 and 21.3°to 17.6,8.4 and 10.5°,***,the PAY1 mutant retained the PROG1 gene characteristic of exhibiting dynamic changes in the tiller angle throughout the growth period,and its culm angle changed from loose during the jointing stage to compact during the heading *** measurements of photosynthetically active radiation(PAR)in the canopy also showed that the mutant PAY1 allowed more PAR to reach the bottom of the canopy than the other *** light-extinction coefficients for PAY1 at the jointing,heading and filling stages were 0.535,0.312 and 0.586,respectively,which were lower than those of the other two *** this study,the influence of the PAY1 gene on rice canopy structural characteristics was quantitatively analyzed to provide effective canopy structure parameters for breeding the ideal plant type.

关键词： rice plant type 3D digitization technology canopy structure

Effectivity and safety of trifocal intraocular lenses and capsular tension rings implantation for cataract patients with axial high myopia

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International Journal of Ophthalmology(English edition) 2024年第3期17卷 499-508页

作者： shan hua Qiu-Xia Xie Hu Wang Jing-Xiang Zhong Dongguan Aier Eye Hospital Jinan UniversityDongguan 523106Guangdong ProvinceChina Department of Ophthalmology the First Affiliated Hospital of Jinan UniversityGuangzhou 510630Guangdong ProvinceChina Department of Ophthalmology the Sixth Affiliated Hospital of Jinan UniversityDongguan 523576Guangdong ProvinceChina

●AIM:To assess effectivity and safety of trifocal intraocular lenses(IOLs)and capsular tension rings in treating cataract patients with axial high myopia.●METHODS:A prospective nonrandomized controlled clinical trial was *** 98 eyes(74 patients)who underwent femtosecond laser-assisted cataract surgery(FLACS)with trifocal IOLs were enrolled in the study and followed up for 2y after surgery:46 eyes(33 patients)with capsular tension ring implantation in the long axial lengths(AL)group(260.05).The dysfunctional lens index and total modulation transfer function(MTF)average height were similar between the two *** postoperative internal coma aberrations in the axial high myopia eyes were significantly higher than that in the normal AL group(P<0.05).The total satisfaction score in the long AL group(91.32±2.76)was slightly higher than that in the normal AL group(90.36±3.47),but there was no difference(P=0.136).A statistically negative correlation was found between corrected distance visual acuity(CDVA)and dysfunctional lens index(r=-0.382,P=0.009),and between CDVA and the total MTF average height(r=-0.374,P=0.01).But there was no significant correlation between CDVA and total satisfaction score(r=0.059,P=0.696).Postoperative complications mainly presented as posterior capsular opacity(PCO),retinal detachment and cystoid macular *** was no difference in the incidenc

关键词： trifocal intraocular lenses capsular tension ring axial high myopia cataract visual quality