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| 1 | Estimation of internal nutrient release in large shallow Lake Taihu, China显示文摘Based on field investigation of wave, sediment suspension and the changes in nutrient concentration of the water column in Lake Taihu, China, we proposed two release models to quantify nutrient release under static and dynamic conditions, respectively. Under static conditions, nutrient release from sediments to the overlying water mainly depends on chemical diffusion induced by concentration gradient, in which the nutrient release is controlled by the temperature, dissolved oxygen concentration in the sediment-water interface, oxidation-reduction potential and the concentration difference between porewater and overlying water. Under dynamic condition (or disturbed condition),both dissolved and particulate nutrients in sediments are released into the water column because of wind-induced sediment suspension. The amount of nutrient release under dynamic conditions is larger than that under the static condition. The release of dissolved nutrients, however, does not increase because the wind induced turbulence made oxidation of metallic elements such as Fe (ferric iron), Mn which are capable of precipitating soluble reactive phosphate (SRP). Under dynamic conditions, therefore, the release of total phosphorus (TP) increases dramatically but the release of SRP is close to those under static conditions. In sediments of Lake Taihu, high Fe content leads to a high ratio of Fe to P contents in sediments (Fe:P ratio). Under dynamic conditions, therefore, nutrient release is controlled by the intensity of disturbance, sediment consolidation and nutrient content in sediments.As for dissolved nutrients, especially SRP, the release is also controlled by the intensity of dynamic re-oxidation, Fe content in sediments and nutrient concentration gradient between porewater and overlying water. Based on these two release modes, the release flux in Lake Taihu has been estimated. In the static condition (i.e. laboratory experimental condition), total release of NH4+-N for whole lake is ca. 10,000 ton/a, and PO43--P is ca. 900 ton/a. In the dynamic condition, nutrient release following sediment suspension was estimated according to three different intensities of wind forcing which were defined as 'calm' (wind speed is less than 2 m/s), 'gentle' (wind speed is greater than 2 m/s and less than 6 m/s) and 'gust' (wind speed is greater than 6 m/s). The release rate in the condition of 'calm' was estimated in terms of the nutrient release in the laboratory experimental static condition; whereas the release rate in conditions of 'gentle' and 'gust' was estimated in terms of measurement during sediment resuspension conducted in flume experiments. With the observation of wind velocity and frequency in 2001, each type of wind forcing took the frequency of 12%, 82% and 6% for 'calm', 'gentle' and 'gust', respectively. The yearly release of nitrogen was 81,000 ton and phosphorus was 21,000 ton, which is about 2-6 folds of annual external loading, respectively. | QIN Boqiang, ZHU Guangwei, ZHANG Lu, LUO Liancong, GAO Guang & GU Binhe Nanjing Institute of Geography & Limnology, Chinese Academy of Sciences, Nanjing 210008, China Everglades Department, South Florida Water Management District, 3301 Gun Club Road, West Palm Beach, FL 33406, USA | 2006 | Science China Earth Sciences2006，49，z1： | 37 |
| 2 | Effect of sediment resuspension on underwater light field in shallow lakes in the middle and lower reaches of the Yangtze River:A case study in Longgan Lake and Taihu Lake显示文摘Based on three continuous in situ underwater light field measurement under different wind waves conditions in Longgan Lake, Meiliang Bay of Taihu Lake in July 2003 and littoral zone near TLLER in July 2004, respectively, the effects of sediment resuspension caused by wind waves on PAR diffuse attenuation, absorption coefficients and euphotic depths are analyzed. In Longgan Lake, PAR diffuse attenuation coefficients during small, middle and large wind waves were 1.74, 2.02 and 2.45 m-1, respectively, and the corresponding PAR spectral diffuse attenuations ranged from 0.98 to 2.97, 1.34 to 3.95 and 1.80 to 5.40 m-1, respectively. In Meiliang Bay, PAR diffuse attenuation coefficients were 2.63, 3.72, 4.37 m-1 during small, middle and large wind waves. PAR diffuse attenuation coefficients increased by 41% and 66% from small to middle, large wind waves, respectively.Absorption coefficients integrated over the range of PAR of CDOM, phytoplankton were 0.26, 0.28 m-1;0.76, 0.49 m-1, respectively during middle and large wind waves. Absorption coefficients integrated over the range of PAR of non-algal particulate matter and total suspended particulate matter increased from 0.94 to 1.73 m-1, and from 1.70 to 2.22 m-1, respectively during middle and large wind waves. Relative contributions of absorption coefficients of non-algal particulate matter to total absorption coefficient integrated over the range of PAR were 44.14%, 65.05%, respectively, during middle and large wind waves. PAR euphotic depths decreased by 0.40, 0.19, 0.20 m from middle to large wind waves in Longganhu Lake, Meliang Bay and littoral zone near TLLER. Significant correlations were found between transparency, PAR diffuse attenuation coefficients, euphotic depths and total suspended particulate matter, wind velocity, wave height. Most significant correlations were found between transparency, PAR diffuse attenuation coefficients, euphotic depths and inorganic suspended particulate matter but low correlations for chlorophyll a, dissolved organic carbon. Increase of total suspended particulate matter, especially inorganic suspended particulate matter caused by wind waves was the dominant factor affecting underwater light field in shallow lakes in the middle and lower reaches of the Yangtze River based on observations at three stations. | ZHANG Yunlin, QIN Boqiang, ZHU Guangwei, GAO Guang, LUO Liancong & CHEN Weimin Nanjing Institute of Geography & Limnology, Chinese Academy of Sciences, Nanjing 210008, China Graduate School of Chinese Academy of Sciences, Beijing 100039, China | 2006 | Science China Earth Sciences2006，49，z1： | 14 |
| 3 | Experimental study on phosphorus release from sediments of shallow lake in wave flume显示文摘Influence of wave on sediment resuspension and nutrients release from sediments, collected from Lake Taihu and Lake Chaohu, was studied in flume experiments. Under strong-wave conditions, concentrations of suspended solids (SS), total phosphorus (TP) and dissolved total phosphorus (DTP) in overlying water were increased significantly following the sediments re-suspension. During the experiments on sediments of Lake Taihu and Lake Chaohu, TP concentrations increased 6 times and 3 times, and DTP concentration increased 100% and 70% more than it in presuspension, respectively. Concentration of soluble reactive phosphorus (SRP) of experiment on sediment of Lake Taihu increased 25%. During the massive sediment suspension, the dissolved phosphorus in pore water and much of the phosphorus adsorbed by the sediment particles were released into overlying water. The phenomena in this wave flume experiment are quite similar to the situation observed in situ of Lake Taihu. The critical wave stresses of sediment re-suspension are nearly equal. The change of concentrations of SS, TP, and SRP was the same as that in situ situation.This study showed that concentrations of TP and SRP in lake water could be increased significantly by wave disturbance. Phosphorus release was significantly enhanced by wave disturbance at the beginning of massive sediment re-suspension, but decreased later. | SUN Xiaojing,ZHU Guangwei, LUO Liancong & QIN Boqiang Nanjing Institute of Geography & Limnology, Chinese Academy of Sciences, Nanjing 210008, China Graduate School of Chinese Academy of Sciences, Beijing 100039, China | 2006 | Science China Earth Sciences2006，49，z1： | 12 |
| 4 | Nutrient fluxes induced by disturbance in Meiliang Bay of Lake Taihu显示文摘A wave flume experiment was conducted to study nutrient fluxes at water-sediment interface of Meiliang Bay under different hydrodynamic conditions. The results reveal that hydrodynamics has remarkable effects on nutrient fluxes in this area. With a bottom wave stress of 0.019 N m-2 (equivalent to disturbance caused by wind SE 5-7 m s-1 at the sediment sample site of Meiliang Bay), the fluxes of TN, TDN and NH4+-N were separately 1.92× 10-3, -1.81 × 10-4 and 5.28× 10-4 mg m-2 s-1(positive for upward and negative for downward), but for TP, TDP and SRP, the fluxes were 5.69 × 10-4, 1.68 × 10-4 and -1.29 × 10-4 mgm-2 s-1. In order to calculate the released amount of nutrients based on these results, statistic analysis on the long-term meteorological data was conducted.The result shows that the maximum lasting time for wind SE 5-7 m s-1 in this area is about 15 h in summer. Further calculation shows that 111 t TN, 32 t NH4+-N, 34 t TP and 10 t TDP can be released into water (the sediment area was 47.45% of the whole surface area), resulting in concentration increase of 0.025, 0.007, 0.007 and 0.002 mg L-1 separately. With stronger disturbance (bottom wave stress is 0.217 N m-2 which is equivalent to disturbance caused by wind SE 10-11 m s-1 at the same site), there has been significant increase of nutrient fluxes (1.16× 10-2, 6.76×10-3, 1.14× 10-2 and 2.14× 10-3 mgm-2 s-1 for TN, DTN and NH4+-N and TP). The exceptions were TDP with flux having a decrease (measured to be 9.54× 10-5 mgm-2 s-1 ) and SRP with flux having a small increase (measured to be 5.42 × 10-5 mgm-2 s-1). The same statistic analysis on meteorological data reveal that the maximum lasting time for wind SE 10-11 m s-1 is no more than 5 h. Based on the nutrient fluxes and the wind lasting-time, similar calculations were also made suggesting that 232 t TN, 134.9 t TDN, 228 t NH4+-N, 42.7 t TP, 2.0 t TDP and 1.1 t SRP will be released from sediment at this hydrodynamic condition resulting in the concentration increases of 0.050, 0.029, 0.049, 0.009, 0.0004 and 0.0002 mg L-1. Therefore in shallow lakes, surface disturbance can lead to significant increase of nutrient concentrations although some components in water column had negative flux with weak disturbance (e.g. TDN and SRP in this experiment). In this case, sediment looks to be a source of nutrients. These nutrients deposited in sediment can be carried or released into water with sediment resuspension or changes of environmental conditions at water-sediment interface, which can have great effects on aquatic ecosystem and is also the characteristics of shallow lakes. | LUO Liancong, QIN Boqiang, ZHU Guangwei, SUN Xiaojing, HONG Dalin, GAO Yajun & XIE Rui Nanjing Institute of Geography & Limnology, Chinese Academy of Sciences, Nanjing 210008, China Nanjing Hydraulic Research Institute, Ministry of Water Resources, Nanjing 210024, China | 2006 | Science China Earth Sciences2006，49，z1： | 7 |
| 5 | Hybrid Structure Reliability Analysis Based on the Damped Newton Method显示文摘This paper presents a hybrid model reliability analysis method based on the damped Newton method with both random and interval variables to solve the hybrid structure reliability problem.The method combines an outer iterative solution and inner layer numerical calculation.In the outer iteration,the method seeks an optimized solution to the interval variable iterative by adding the boundary constraint condition based on the damped Newton optimization theory.In the inner layer solution,the method first reduces the dimension of the random variable through the dimension reduction method,then obtains the first four-order central moment of the function through the application of the Taylor expansion method,and finally calculates the reliability index of the structure according to the fourth-order moment calculation structure of the function.The results of a numerical example and an engineering ten-rod truss structure show that the proposed method can effectively solve the random-interval hybrid reliability problem and has better calculation accuracy than that of the two-layer iterative method. | Hongwei Zheng Guangwei Meng Feng Li Tonghui Wei Wei Luo Yaming Guo | 2020 | Tsinghua Science and Technology2020，25，5： | 2 |
| 6 | Spatiotemporal Mapping of Salt Marshes in the Intertidal Zone of China during 1985-2019显示文摘This study mapped the areal extent,identified the species composition,and analyzed the changes of salt marshes in the intertidal zone of China during the period 1985–2019.With the aid of the cloud platform of the Google Earth Engine,we selected Landsat 5/8 and Sentinel-2 images and used the support vector machine classification method to extract salt marsh information for the years of 1985,1990,1995,2000,2005,2010,2015,and 2019.Seven major species of salt marshes:Phragmites australis,Suaeda spp.,Spartina alterniflora,Scirpus mariqueter,Tamarix chinensis,Cyperus malaccensis,and Sesuvium portulacastrum were identified.Our results showed that salt marshes are mainly distributed in Liaoning,Shandong,Jiangsu,Shanghai,and Zhejiang,with varying patterns of shrinking,expansion,or wavering in different places.The distribution of salt marshes has declined considerably from 151,324 ha in 1985 to 115,397 ha in 2019,a drop of 23.7%.During the same period,the area of native species has dropped 95.4%from 77,741 ha to 3,563 ha for Suaeda spp.and 45.1%from 60,511 ha to 33,193 ha for P.australis;on the contrary,the area of exotic species,S.alterniflora,has exhibited a sharp rise from just 99 ha to 67,527 ha.For the past 35 years,the driving factors causing salt marsh changes are mainly land reclamation,variations in water and sand fluxes,and interspecific competition and succession of salt marsh vegetation.These results provide fundamental reference information and could form the scientific basis for formulating policies for the conservation and utilization of salt marsh resources in China. | Guangwei Chen Runjie Jin Zhanjiang Ye Qi Li Jiali Gu Min Luo Yongming Luo George Christakos James Morris Junyu He Dan Li Hengwei Wang Li Song Qiuxuan Wang Jiaping Wu | 2022 | Journal of Remote Sensing2022，，1： | 2 |
| 7 | SEDIMENT PROPERTIES AND DYNAMICS IN THE TAIHU LAKE,CHINA显示文摘 | Liancong LUO Boqiang QIN Guang GAO Guangwei ZHU Jinshan ZHANG | 2006 | International Journal of Sediment Research2006，21，4： | 2 |
| 8 | Deoxynivalenol accumulation and detoxification in cereals and its potential role in wheat-Fusarium graminearum interactions显示文摘Deoxynivalenol(DON)is a prominent mycotoxin showing significant accumulation in cereal plants during infection by the phytopathogen Fusarium graminearum.It is a virulence factor that is important in the spread of F.graminearum within cereal heads,and it causes serious yield losses and significant contamination of cereal grains.In recent decades,genetic and genomic studies have facilitated the characterization of the molecular pathways of DON biosynthesis in F.graminearum and the environmental factors that influence DON accumulation.In addition,diverse scab resistance traits related to the repression of DON accumulation in plants have been identified,and experimental studies of wheat–pathogen interactions have contributed to understanding detoxification mechanisms in host plants.The present review illustrates and summarizes the molecular networks of DON mycotoxin production in F.graminearum and the methods of DON detoxification in plants based on the current literature,which provides molecular targets for crop improvement programs.This review also comprehensively discusses recent advances and challenges related to genetic engineering-mediated cultivar improvements to strengthen scab resistance.Furthermore,ongoing advancements in genetic engineering will enable the application of these molecular targets to develop more scab-resistant wheat cultivars with DON detoxification traits. | Kun Luo Jiao Guo Dejia He Guangwei Li Thérèse Ouellet | 2023 | aBIOTECH2023，4，2： | 2 |
| 9 | Wind-wave affected phosphate loading variations and their relationship to redox condition in Lake Taihu显示文摘Variation of wind speed and the physico-chemical parameters, such as dissolved phosphate, ferrous and manganese in lake water were observed on site. Together with the chemistry analysis and simulated experiment in lab, the change of phosphate concentration in lake water was analyzed. The variation of ferrous/phosphate ratio explained that along with the enhancement of wind-wave effect and the oxidation ability of lake water, the effects of co-precipitation and removal of dissolved phosphate and iron in the lake water were reinforced. The ferrous/phosphate ratio in pore water was less than 2.0, demonstrating that the dissolved phosphate can be released into the overlying water. But, in the lake water, the stability of phosphate was controlled by the water dynamics.The phosphate release experiment showed that molecular release was only part of the whole and the direct discharge of phosphate in the pore water was also a part. The mineralization and biological process of suspended particulates in the water may be another important reason for the whole phosphate loadings. | ZHANG Lu ZHU Guangwei LUO Liancong GAO Guang ZHANG Yunlin QIN Boqiang FAN Chengxin | 2006 | Science China Earth Sciences2006，49，z1： | 2 |
| 10 | SCFP, a novel fiber-specific promoter in cotton显示文摘To investigate the expression pattern of GhSCFP which was isolated from cotton fiber cDNA library, a 1006 bp upstream fragment of the gene was cloned by chromosome walking and fused to GUS and GFP respectively. Histochemical GUS and GFP fluorescence analysis revealed that the expression of the report genes driven by the promoter sequence was detectable only in outer layer cells during the seed development in the transgentic tobaccos. In transgenic cotton, strong GUS activity was observed in spherical protrusions on 0 dpa (days post anthesis) ovule surface, and in the 2―36 dpa fiber cells, while no GUS signals were detected in the root, leaves, stem, corolla, anther and stigma. Our data demonstrated that GhSCFP upstream sequence is a cotton fiber-specific promoter and this promoter will be useful in the molecular research on fiber cell development and in cotton fiber improvements by genetic modification. | HOU Lei LIU Hao LI JiaBao YANG Xia XIAO YueHua LUO Ming SONG ShuiQing YANG GuangWei PEI Yan | 2008 | Chinese Science Bulletin2008，53，17： | 2 |
| 11 | A New Kind of Subjective Trust Model显示文摘Based on the outstanding characteristics of Cloud Model on the process of transforming a qualitative concept to a set of quantitative numerical values, a formalized model of subjective trust is introduced by which we can transform between qualitative reputation and quantitative voting data. The present paper brings forward algorithms to compute direct trust and recommender trust. Further more, an effective similarity measuring method used to distinguish two users’ reputation on knowledge level is also proposed. The given model properly settles the uncertainty and fuzziness properties of subjective trust which is always the weakness of traditional subjective trust model, and provides a step in the direction of proper understanding and definition of human trust. | ZHANG Guangwei KANG Jianchu LUO Ziqiang MENG Xiangyi FANG Peici LI Deyi | 2006 | Wuhan University Journal of Natural Sciences2006，11，6： | 1 |
| 12 | The influence of water quality and sediment geochemistry on the horizontal and vertical distribution of phosphorus and nitrogen in sediments of a large, shallow lake显示文摘 | Dennis Trolle Guangwei Zhu David Hamilton Liancong Luo Chris McBride Lu Zhang | 2009 | Hydrobiologia2009，，1： | 1 |
| 13 | The multifocal electroretinogram in X-linked juvenile retinoschisis显示文摘 | Shizhou Huang Dezheng Wu Futian Jiang Guangwei Luo Jiongji Liang Feng Wen Minzhong Yu Shixian Long Lezheng Wu | 2003 | Documenta Ophthalmologica2003，，3： | 1 |
| 14 | The Study of Local Electrophysiology in Macular Diseases显示文摘Purposes: To observe the features and clinical utility values of local electroretinogram (LERG) and local visual evoked potentials(LVEP) in macular diseases. Methods : The spot stimuli were obtained by changing the shutters with different sizes of hole at the posterior of Ganzfeld ball. The recording electrode for LERG was made with the filament of platinum as blepharophthalmostat like. The LERG and LVEP were simultaneously recorded in macular diseases.Results: The exudative AMD, Stargardt's disease, central serous chorioretinopathy and idio-pathic macular hole had seriously decreased amplitudes of LERG and higher abnormal rates, comparing with atrophic AMD and idiopathic preretinal membranes in the region of 2.5° and 5° at macula. The abnormal rates in these diseases were higher for LERG than for LVEP. Conclusion: The LERG can objectively measure the variation of macular function in macu-lopathies. The sensitivities of LVEP are lower than those of LERG for macular diseases. Eye Science 1998; 14; 30 - | Guangwei Luo, Lezheng Wu, De-zheng WuZhongshan Ophthalmic Center, Sun Yat-sen University of Medical Sciences , Guangzhou 510060, China | 1998 | 眼科学报1998，14，1： | 1 |
| 15 | The influence of water quality and sediment geochemistry on the horizontal and vertical distribution of phosphorus and nitrogen in sediments of a large, shallow lake显示文摘 | Dennis Trolle Guangwei Zhu David Hamilton Liancong Luo Chris McBride Lu Zhang | 2009 | Hydrobiologia2009，，1： | 1 |
| 16 | Effects of Shengmai Yin(生脉饮)on pulmonary and cardiac function in coronavirus disease 2019 convalescent patients with cardiopulmonary symptoms:a randomized,double blind,multicenter control trial显示文摘OBJECTIVE:To evaluate the efficacy and safety of Shengmai Yin(生脉饮,SMY)on visual analogue scale(VAS)for cardiopulmonary symptoms in coronavirus disease 2019(COVID-19)convalescent patients.METHODS:In this randomized,double blind and multicenter controlled trial,a total of 200 COVID-19 convalescent patients who with cardiopulmonary symptoms were enrolled from three medical centers in Hubei,China.These patients were randomized divided into trial group and the control group,100 patients in each one,SMY and its placebo were applied to respectively,for two weeks.VAS of clinical symptoms included shortness of breath,hidrosis,chest distress,palpitation,and dry cough was performed at 0,1,2 weeks.Decrease in VAS of 30%or more was defined as effective,and a reduction in VAS of 0 was defined as curative.RESULTS:A total of 192 completed the study.The VAS of TCM symptoms showed there was no difference in baseline between the two groups.The VAS in both groups was down-regulated,and there was no significant difference in VAS and cure rates at the first and second week between the two groups.There was no significant difference in breath,hidrosis,palpitation,and dry cough between the two groups but SMY treatment for two weeks has remarkable therapeutic effects in chest distress than placebo.CONCLUSIONS:SMY could effectively ameliorate the symptoms of chest distress,and improve the quality of life of the COVID-19 convalescent patients. | AN Xuedong MAO Lina XIA Ping SU Wen WANG Beibei KOU Leiya ZHANG Zequan QI Meng HU Song CHEN Jing LI Xiujuan LIU Jinwei ZHOU Juan QIAO Jie LUO Dan LUO Guangwei YAN Youqin YANG Guiping DONG Dandan ZHOU Wei TAO Junxiu JIN De TONG Xiaolin WEI Li | 2023 | Journal of Traditional Chinese Medicine2023，43，1： | 1 |
| 17 | Effect of Zirconium on Tensile Property,Microstructure and Fracture Behaviour of Cast Ni_3Al Based Alloy显示文摘EfectofZirconiumonTensileProperty,MicrostructureandFractureBehaviourofCastNi3AlBasedAloyYeWujun,FengDi,HanGuangwei,LuoHeli①A... | Ye Wujun, Feng Di, Han Guangwei, Luo Heli Central Iron and Steel Research Institute, MMI, Beijing (100081), China | 1997 | Journal of Iron and Steel Research(International)1997，4，1： | 1 |
| 18 | Development of Clinical Visual Physiology in China during Past Fifty Years显示文摘The studies of clinical visual physiology (CVP)were initiated in 1950s in China.Clinical visual physiology,as an essential method to evaluate the vision function,provides important information for assessment and treatment of certain ocular diseases in retinal and optic pathway.It has become an important part in the development of ophthalmology in China. | Lezheng Wu Dezheng Wu Daiyan Xin Shizhou Huang Yu Wang Feng Wen Shixian Long Guangwei Luo Jiongji Liang | 2012 | Eye Science2012，27，1： | 0 |
| 19 | Follow-up of a Case of Vitelliform Macular Dystrophy Over an 8-year Period显示文摘Purpose: To show the follow-up of a case of vitelliform macular dystrophy with morphological and visual functional tests over an 8-year period.Methods:.Retrospective review of medical records..The morphological examination included color photography,.fluorescein angiography, and ocular coherence tomography(OCT).The visual functional tests included visual acuity, electro-oculogram(EOG) and multifocal electroretinography(mf ERG).The patient was observed for 8 years, from 2003 to 2011.Results:.During the follow-up,.the improvement of sensory retinal detachment and reduction of yellow-white deposit were observed with color photography and fluorescein angiography.OCT revealed a decrease in sensory retinal detachment and subretinal hyper-reflective deposits; both of these morphological changes were correspondent. Visual acuity was maintained throughout the follow-up..The Arden ratio of EOG was decreased. The amplitudes of mf ERG were decreased but slightly increased during the follow-up.Conclusion:.The retinal morphological changes and visual function slightly improved in this case of vitelliform maculopathy. The prognosis is good. | Shizhou Huang Lezheng Wu Feng Wen Guangwei Luo Futian Jiang | 2014 | Eye Science2014，29，3： | 0 |
| 20 | Research on Data Mining in Electronic Commerce显示文摘 | Hanyang Luo Guangwei Song | 2004 | China-USA Business Review2004，3，6： | 0 |
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