|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Formability of AA 2219-O sheet under quasi-static,electromagnetic dynamic,and mechanical dynamic tensile loadings显示文摘The mechanism by which electromagnetic forming(EMF)enhances the formability of metals is unclear owing to the coupling effect of multi-physics fields.In the present work,the associated formability improvement mechanisms were qualitatively categorized and illustrated.This was realized by comparing the formability of fully annealed 2219 aluminum alloy(AA 2219-O)sheet under quasi-static(QS),electromagnetic dynamic(EM),and mechanical dynamic(MD)tensile loadings.It was found that the forming limit of AA 2219-O sheet under EM tensile loading was significantly(45.4%)higher than that under QS tensile loading,and was marginally(3.7%–4.3%)higher than that under MD tensile loading.In addition,the forming limit of AA 2219-O sheet demonstrated a negative dependency on the strain rate within the range of the dynamic tensile tests conducted.The deformation conditions common to EM and MD tensile loadings were responsible for the significant formability improvement compared with QS tensile loading.In particular,the inertial effect was dominant.The different deformation conditions that distinguish EM tensile loading from MD tensile loading resulted in the marginal improvement in formability.This was caused by the absence of a sustaining contact force at the later deformation stage and the lower strain rate.The body force exerted little influence on the formability improvement,and the thermal effect under the two dynamic tensile loadings was negligible. | Hongliang Su Liang Huang Jianjun Li Wang Xiao Hui Zhu Fei Feng Hongwei Li Siliang Yan | 2021 | Journal of Materials Science & Technology2021，，11： | 13 |
| 2 | Dissolved inorganic carbon and its isotopic differentiation in cascade reservoirs in the Wujiang drainage basin显示文摘Three cascade reservoirs,built in different periods of time in the Wujiang drainage basin,were inves-tigated in this study.Samples were taken at the surface and also at 20,40,60,80 m depths in front of the dams in April,July,October of 2006 and January of 2007.Chemical parameters were calculated and the concentrations of dissolved inorganic carbon DIC and its isotopic composition(δ13CDIC) were de-termined.In surface waters,the δ13CDIC values are high in summer and autumn and low in winter and spring,while the DIC concentrations are relatively low in summer and autumn and relatively high in winter and spring.In the water column,the DIC concentrations increase while δ13CDIC values decrease with water depth.DIC in various reservoirs is significantly different in isotopic composition from that in natural rivers,but is close to that in natural lakes.In addition,in surface waters,the δ13CDIC values tend to become lower whereas the nutrition level tends to become higher with increasing age of the reser-voirs.The conclusion is that after dam blocking,changes took place in the hydrochemical properties of river water,and the impounding rivers developed toward lakes and swamps.In addition,differentiation in DIC isotopic composition may be used to some extent to trace the evolution process of a reservoir. | YU YuanXiu LIU CongQiang WANG FuShun WANG BaoLi LI Jun LI SiLiang | 2008 | Chinese Science Bulletin2008，53，21： | 9 |
| 3 | Nitrous oxide (N_2O) emissions from a mesotrophic reservoir on the Wujiang River,southwest China显示文摘Aquatic ecosystems have been identified as a globally significant source of nitrous oxide(N_2O) due to continuous active nitrogen involvement, but the processes and influencing factors that control N_2O production are still poorly understood, especially in reservoirs. For that, monthly N_2O variations were monitored in Dongfeng reservoir(DFR)with a mesotrophic condition. The dissolved N_2O concentration in DFR displayed a distinct spatial–temporal pattern but lower than that in the eutrophic reservoirs. During the whole sampling year, N_2O saturation ranging from 144% to 640%, indicating that reservoir acted as source of atmospheric N_2O. N_2O production is induced by the introduction of nitrogen(NO_3^-, NH_4^+) in mesotrophic reservoirs, and is also affected by oxygen level and water temperature. Nitrification was the predominate process for N_2O production in DFR due to well-oxygenated longitudinal water layers.Mean values of estimated N_2O flux from the air–water interface averaged 0.19 μmol m^(-2)h^(-1) with a range of 0.01–0.61 μmol m^(-2)h^(-1). DFR exhibited less N_2O emission flux than that reported in a nearby eutrophic reservoir, but still acted as a moderate N_2O source compared with other reservoirs and lakes worldwide. Annual emissions from the water–air interface of DFR were estimated to be 0.32×10~5 mol N–N_2O, while N_2O degassing from releasing water behind the dam during power generation was nearly five times greater. Hence, N_2O degassing behind the dam should be taken into account for estimation of N_2O emissions from artificial reservoirs, an omission that historically has probably resulted in underestimates. IPCC methodology should consider more specifically N_2O emission estimation in aquatic ecosystems, especially in reservoirs, the default EF5 model will lead to an overestimation. | Xiaolong Liu Siliang Li Zhongliang Wang Guilin Han Jun Li Baoli Wang Fushun Wang Li Bai | 2017 | Acta Geochimica2017，36，4： | 6 |
| 4 | Role of the inter-pass cooling rate in recrystallization behaviors of Ni-based superalloy during interrupted hot compression显示文摘The microstructural evolution of a Ni-based superalloy under interrupted hot compressive deformation with different cooling rates in the inter-pass stage is investigated. It is found that metadynamic recrystallization(MDRX) in the inter-pass stage is more sensitive to the accumulated strain than the deformation temperature which is above the recrystallization temperature. The variations of both the grain distribution and the texture intensity caused by MDRX during the interpass stage result in variations of the yield stress(YS) and the work hardening(WH) rate in each stage. Results also show that the MDRX process in the inter-pass stage has a considerable influence on the final microstructure of three-pass compression. The final grain distribution is more uniform,and the compression texture gradually transforms into recrystallization texture with an increasing degree of MDRX. In order to predict the MDRX fraction in the inter-pass cooling stage, a modified kinetic equation is established, which can reasonably predict the MDRX behavior under multi-pass compression with different conditions in the inter-pass stage. Meanwhile, the influence of the interpass cooling stage on the mechanism of dynamic recrystallization(DRX) is studied. It is universally acknowledged that the discontinuous dynamic recrystallization(DDRX) process is the major deformation mechanism for the Ni-based superalloy. However, the continuous dynamic recrystallization(CDRX) process is promoted in the compression stage with a decrease of the cooling rate in each inter-pass stage. | Xin ZHANG Hongwei LI Mei ZHAN Siliang YAN Ning ZHANG | 2019 | Chinese Journal of Aeronautics2019，32，5： | 5 |
| 5 | Plastic wrinkling prediction in thin-walled part forming process: A review显示文摘The precision forming of thin-walled components has been urgently needed in aviation and aerospace field. However, the wrinkling induced by the compressive instability is one of the major defects in thin-walled part forming. The initiation and growth of the wrinkles are interactively affected by many factors such as stress states, mechanical properties of the material, geometry of the workpiece and boundary conditions. Especially when the forming process involves complicated boundary conditions such as multi-dies constrains, the perturbation of clearances between workpiece and dies and the contact conditions changing in time and space, etc., the predication of the wrinkling is further complicated. In this paper, the current prediction methods were summarized including the static equilibrium method, the energy method, the initial imperfection method,the eigenvalue buckling analysis method, the static-implicit finite element method and the dynamicexplicit finite element method. Then, a systematical comparison and summary of these methods in terms of their advantages and limitations are presented. By using a combination of explicit FE method, initial imperfection and energy conservation, a hybrid method is recommended to predict plastic wrinkling in thin-walled part forming. Finally, considering the urgent requirements of complex thin-walled structures' part in aviation and aerospace field, the trends and challenges in wrinkling prediction under complicated boundary conditions are presented. | Liu Nan Yang He Li Heng Yan Siliang | 2016 | Chinese Journal of Aeronautics2016，29，1： | 5 |
| 6 | Sulfuric acid as a weathering agent of carbonate weathering constrained by δ^(13)C: Examples from Southwest China显示文摘 | Siliang LI Jérome Gaillardet Guilin HAN Damien Calmels Congqiang LIU | 2006 | Chinese Journal Of Geochemistry2006，25，B08： | 4 |
| 7 | Repeated sending file delivery protocol in satellite networking communication显示文摘Satellite networking communications in navigation satellite system and space-based deep space exploration have the features of a long delay and high bit error rate (BER). Through analyzing the advantages and disadvantages of the Consultative Committee for the Space Data System (CCSDS) file delivery protocol (CFDP), a new improved repeated sending file delivery protocol (RSFDP) based on the adaptive repeated sending is put forward to build an efficient and reliable file transmission. According to the estimation of the BER of the transmission link, RSFDP repeatedly sends the lost protocol data units (PDUs) at the stage of the retransmission to improve the success rate and reduce time of the retransmission. Theoretical analyses and results of the Opnet simulation indicate that the performance of RSFDP has significant improvement gains over CFDP in the link with a long delay and high BER. The realizing results based on the space borne filed programmable gate array (FPGA) platform show the applicability of the proposed algorithm. | Yongqing Wang Jun Li Guang Chen Siliang Wu | 2012 | Journal of Systems Engineering and Electronics2012，23，6： | 3 |
| 8 | Optimal Day-ahead Scheduling of Islanded Microgrid Considering Risk-based Reserve Decision显示文摘Due to the lack of support from the main grid,the intermittency of renewable energy sources(RESs)and the fluctuation of load will derive uncertainties to the operation of islanded microgrids(IMGs).It is crucial to allocate appropriate reserve capacity for the economic and reliable operation of IMGs.With the high penetration of RESs,it faces both economic and environmental challenges if we only use spinning reserve for reserve support.To solve these problems,a multi-type reserve scheme for IMGs is proposed according to different operation characteristics of generation,load,and storage.The operation risk due to reserve shortage is modeled by the conditional value-at-risk(CVaR)method.The correlation of input variables is considered for the forecasting error modeling of RES and load,and Latin hypercube sampling(LHS)is adopted to generate the random scenarios of the forecasting error,so as to avoid the dimension disaster caused by conventional large-scale scenario sampling approaches.Furthermore,an optimal day-ahead scheduling model of joint energy and reserve considering riskbased reserve decision is established to coordinate the security and economy of the operation of IMGs.Finally,the comparison of numerical results of different schemes demonstrate the rationality and effectiveness of the proposed scheme and model. | Zehuai Liu Siliang Liu Qinhao Li Yongjun Zhang Wenyang Deng Lai Zhou | 2021 | Journal of Modern Power Systems and Clean Energy2021，9，5： | 2 |
| 9 | Metal removal from and microbial property improvement of a multiple heavy metals contaminated soil by phytoextraction with a cadmium hyperaccumulator Sedum alfredii H.显示文摘 | Wenhao Yang Taoxiang Zhang Siliang Li Wuzhong Ni | 2014 | Journal of Soils and Sediments2014，，8： | 2 |
| 10 | Using the dual isotopes approach to identify the nitrate sources of karst groundwater, Guiyang, Southwest China.显示文摘 | Siliang LI Congqiang LIU Yunchao LANG | 2006 | Chinese Journal Of Geochemistry2006，25，B08： | 2 |
| 11 | Sulfate sources constrained by sulfur and oxygen isotopic compositions in the upper reaches of the Xijiang River,China显示文摘While it is critical to accurately understand the sources and transformation of sulfate based on time-series analysis, there are limited studies on temporal variation of sulfate in rivers and on rock weathering by sulfuric acids.We conducted a monthly sampling campaign in the Beipan, Nanpan, and Hongshui Rivers over the course of one hydrological year. This study examined seasonal variations in riverine sulfate impacted by the monsoon climate in the upper reaches of the Xijiang River basin. In general, the SO_4^(2-) contents in these rivers dropped from relatively high levels to low values during the high-flow season, in response to increasing discharge. The sulfate was generally enriched in heavy isotopes during the low-flow season compared to the high-flow season. The calculated results indicate that the riverine sulfate was mainly derived from sulfide oxidation, but that evaporite dissolution could be an important source during the low-flow season, based on isotopic evidence. Mine drainage is likely an important source of sulfate to these rivers during the high-flow season due to contributions from fast surface flow, which responds to frequent heavy rain in monsoonal climate regions. Arelatively high proportion of HCO_3^- was found to be derived from rock weathering by sulfuric acid during the high-flow season when compared to that observed during the low-flow season. The results suggest that approximately one quarter of the HCO_3^- in the Hongshui River originated from carbonate weathering by sulfuric acid derived from the oxidation of sulfide. Such information on the specific dual isotopic characteristics of riverine sulfate throughout a hydrological year can provide unique evidence for understanding the temporal variability of sulfate concentrations and weathering processes in rivers. | Jing Liu Siliang Li Jun Zhong Xuetao Zhu Qingjun Guo Yunchao Lang Xiaokun Han | 2017 | Acta Geochimica2017，36，4： | 2 |
| 12 | J Chemom显示文摘 | Cao D SiLiang Y Z Xu Q S Zhang L X Hu Q N Li H D | 2011 | 25(4):2012011，25，4： | 1 |
| 13 | Assessment of the sources of nitrate in the Changjiang River, China using a nitrogen and oxygen isotopic approach 显示文摘 | Li Siliang Liu Congqiang Li Jun | 2010 | Environmental Science and Technology2010，44，5： | 1 |
| 14 | Evaluation of nitrate source in surface water of southwestern China based on stable isotopes显示文摘 | LI Siliang LIU Congqiang LI Jun | 2013 | Environmental Earth Sciences2013，68，1： | 1 |
| 15 | Protrusio acetabuli in ankylosing spondylitis patients with end-stage hip involvement显示文摘Protrusio acetabuli(PA)is_a complication of a wide spectrum_of pathological disorders involving the hip joint,[1] The underlying.causes can be infammatory[2,3] traumatic,genetic,metabolic,infectious,and idiopathic.Inflammatory causes lead todestruction and weakening of the bone surrounding the hip with resultant migration along the joint-reaction vector. | Hongchao Li Liang Zhang Siliang Man Tao Bian Mingxue Chen Hui Song Yixin Zhou | 2022 | Chinese Medical Journal2022，，10： | 1 |
| 16 | Spatial characters of nutrients in Wujiangdu Reservoir in karst river,SW China显示文摘A preliminary assessment of the Wujiangdu Reservoir examined nutrient distribution and transport.Water samples were collected in the summer(July) of 2004, during the high-flow season. Inorganic nutrients(N,P, Si) and chlorophyll a(chl a) concentrations of the Wujiangdu Reservoir and its inflow rivers were analyzed.Other water parameters(dissolved oxygen, p H, temperature, and electrical conductivity) were measured as well.The results show gradually decreasing concentrations of NO_3^--N and dissolved silicate in the surface water moving downstream to the dam of the Wujiangdu Reservoir.Additionally, soluble reactive phosphorus concentrations measured very low, with most falling below the sensitivity threshold of the method used in surface waters. Particulate phosphorus and NO_3^--N were the predominant species of phosphorus and nitrogen in the reservoir, respectively. The concentration of nutrients in the Yeji River was the largest of all inflow rivers. The maximum concentration of chl a was found near the dam. These results reflect upstream conditions similar to that of a river, and reservoir conditions near the dam similar to that of a natural lake system. | Jun Zhu Siliang Li Yuchun Wang Haiyu Yan Limin Liao Jun Zhong | 2017 | Acta Geochimica2017，36，4： | 1 |
| 17 | Discovery of potential biomarkers for human atherosclerotic abdominal aortic aneurysm through untargeted metabolomics and transcriptomics显示文摘Abdominal aortic aneurysm(AAA)and atherosclerosis(AS)have considerable similarities in clinical risk factors and molecular pathogenesis.The aim of our study was to investigate the differences between AAA and AS from the perspective of metabolomics,and to explore the potential mechanisms of differential metabolites via integration analysis with transcriptomics.Plasma samples from 32 AAA and 32 AS patients were applied to characterize the metabolite profiles using untargeted liquid chromatography-mass spectrometry(LC-MS).A total of 18 remarkably different metabolites were identified,and a combination of seven metabolites could potentially serve as a biomarker to distinguish AAA and AS,with an area under the curve(AUC)of0.93.Subsequently,we analyzed both the metabolomics and transcriptomics data and found that seven metabolites,especially 2’-deoxy-D-ribose(2 d DR),were significantly correlated with differentially expressed genes.In conclusion,our study presents a comprehensive landscape of plasma metabolites in AAA and AS patients,and provides a research direction for pathogenetic mechanisms in atherosclerotic AAA. | Lei JI Siliang CHEN Guangchao GU Wei WANG Jinrui REN Fang XU Fangda LI Jianqiang WU Dan YANG Yuehong ZHENG | 2021 | Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2021，22，9： | 1 |
| 18 | Distributions of Picophytoplankton and Phytoplankton Pigments Along a Salinity Gradient in the Changjiang River Estuary, China显示文摘We investigated the abundance of different picophytoplankton groups and the phytoplankton pigment ratio in relation to environmental factors such as nutrients and suspended solids along a salinity gradient in the Changjiang River Estuary. The average numbers of Synechococcus spp.(Syn) and picoeukaryotes(Euk) were(2.7 ±5.1) ×103 and(1.1±1.4) ×103 cells m L-1, respectively. Prochlorococcus spp.(Pro) was only found in the high-salinity brackish water with the concentration of 3.0×103 cells m L-1. Syn and Euk numbers both tended to increase offshore and Syn showed a larger variation in cell abundance than Euk. The contribution of picophytoplankton to total phytoplankton biomass increased with increasing salinity and decreasing nutrient concentrations from the estuary to the open ocean. The response of different picophytoplankton groups to environmental variables was different. Water temperature was more important in its control over Euk than over Syn, while nutrients were more important in their influence over Syn than over Euk. Phytoplankton pigment ratios were different in the three different ecological zones along the salinity gradient(i.e., freshwater zone with 0-5 range, fresh and saline water mixing zone with 5-20 range, and high-salinity brackish water zone with 20-32 range), where three different phytoplankton communities were discovered, suggesting that phytoplankton pigment ratios can be considered as a complementary indicator of phytoplankton community structure in the Changjiang River Estuary. | WANG Baoli LIU Congqiang WANG Fushun LI Siliang Sivaji Patra | 2014 | Journal of Ocean University of China2014，13，4： | 1 |
| 19 | Using 5SN-and 5SO-Values To Identify Nitrate Sources in Karst Ground Water,Guiyang,Southwest China显示文摘 | LIU Congqiang LI Siliang LANG Yunchao | 2006 | Environmental Science and Technology2006，40，： | 1 |
| 20 | Exception analysis in the Java native interface 显示文摘 | Li Siliang Tan Gang | 2014 | Science of Computer Programming2014，89，9： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员