|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | The State of the Art of Data Science and Engineering in Structural Health Monitoring显示文摘Structural health monitoring (SHM) is a multi-discipline field that involves the automatic sensing of structural loads and response by means of a large number of sensors and instruments, followed by a diagnosis of the structural health based on the collected data. Because an SHM system implemented into a structure automatically senses, evaluates, and warns about structural conditions in real time, massive data are a significant feature of SHM. The techniques related to massive data are referred to as data science and engineering, and include acquisition techniques, transition techniques, management techniques, and processing and mining algorithms for massive data. This paper provides a brief review of the state of the art of data science and engineering in SHM as investigated by these authors, and covers the compressive sampling-based data-acquisition algorithm, the anomaly data diagnosis approach using a deep learning algorithm, crack identification approaches using computer vision techniques, and condition assessment approaches for bridges using machine learning algorithms. Future trends are discussed in the conclusion. | Yuequan Bao Zhicheng Chen Shiyin Wei Yang Xu Zhiyi Tang Hui Li | 2019 | Engineering2019，5，2： | 47 |
| 2 | Glacier changes during the last forty years in the Tarim Interior River basin,northwest China显示文摘By comparing digitized glacier outlines from the Chinese Glacier Inventory (CGI) during the 1960s-1970s and Landsat Enhance Thematic Mapper (ETM+) images from 1999 to 2001, we investigated changes for about 7665 alpine glaciers among 11665 glaciers in seven sub-basins of the Tarim Interior River basin (TIRB). The results showed that the total glacier area was reduced by 3.3% from the 1960s/ 1970s to 1999/2001 and area losses for 1-5 km2 glaciers accounted for 48.3% of the total glacier area loss in the TIRB. However, the glacier area reductions varied from 0.7% to 7.9% among the seven sub-basins of the TIRB during the study period. The glacier area changing with altitude showed that the maximum contribution of area shrinkage occurred at 4900-5400 m. Data from 25 meteorological stations in the TIRB showed increases in both the annual mean air temperature and annual precipitation during 1960-2000. This indicates that the glacier shrinkage in the TIRB over the last 40 years was largely due to regional climate warming that enhanced glacier ablation and overcame the effects of increased precipitation on the glacier mass balance. | Donghui Shangguan Shiyin Liu Yongjian Ding Lianfu Ding Junli Xu Li Jing | 2009 | Progress in Natural Science:Materials International2009，19，6： | 26 |
| 3 | Thinning and Shrinkage of Laohugou No. 12 Glacier in the Western Qilian Mountains, China, from 1957 to 2007显示文摘Landsat images, real-time kinematic GPS measurements, and topographic maps were used to determine changes in ice elevation, volume, and areal extent of the Laohugou No. 12 glacier (Qilian Mountains, China) between 1957 and 2007. The glacier experienced significant thinning and areal shrinkage in the ablation zone, but slight thickening in part of the accumulation zone. Elevation decreased by 18.6±5.4 m between 1957 and 2007 in the regions covered by the GPS measurements. The total volume loss for the entire glacier was estimated to be 0.218 km3 using a third-order polynomial fit method. The area diminished by 0.28 km2 between 1957 and 1994, 0.26 km2 between 1994 and 2000, and 0.28 km2 between 2000 and 2007, suggesting that the rate of loss in glacial coverage has increased since the mid-1990s. Significant increases in annual mean air temperature may have contributed to shrinkage and thinning of the glacier. | ZHANG Yingsong LIU Shiyin SHANGGUAN Donghui LI Jing ZHAO Jingdong | 2012 | Journal of Mountain Science2012，9，3： | 16 |
| 4 | Spatial-temporal characteristics of lake area variations in Hoh Xil region from 1970 to 2011显示文摘As one of the areas with numerous lakes on the Tibetan Plateau, the Hoh Xil region plays an extremely important role in the fragile plateau eco-environment. Based on topographic maps in the 1970 s and Landsat TM/ETM+ remote sensing images in the 1990 s and the period from 2000 to 2011, the data of 83 lakes with an area above 10 km2 each were obtained by digitization method and artificial visual interpretation technology, and the causes for lake variations were also analyzed. Some conclusions can be drawn as follows.(1) From the 1970 s to 2011, the lakes in the Hoh Xil region firstly shrank and then expanded. In particular, the area of lakes generally decreased during the 1970s–1990s. Then the lakes expanded from the 1990 s to 2000 and the area was slightly higher than that in the 1970 s. The area of lakes dramatically increased after 2000.(2) From 2000 to 2011, the lakes with different area ranks in the Hoh Xil region showed an overall expansion trend. Meanwhile, some regional differences were also discovered. Most of the lakes expanded and were widely distributed in the northern, central and western parts of the region. Some lakes were merged together or overflowed due to their rapid expansion. A small number of lakes with the trend of area decrease or strong fluctuation were scattered in the central and southern parts of the study area. And their variations were related to their own supply conditions or hydraulic connection with the downstream lakes or rivers.(3) The increase in precipitation was the dominant factor resulting in the expansion of lakes in the Hoh Xil region. The secondary factor was the increase in meltwater from glaciers and frozen soil due to climate warming. | YAO Xiaojun LIU Shiyin LI Long SUN Meiping LUO Jing | 2014 | Journal of Geographical Sciences2014，24，4： | 14 |
| 5 | Identification of Ice Elevation Change of the Shuiguan River No.4 Glacier in the Qilian Mountains,China显示文摘GPS measurement,an effective method for surveying glacier surface topography,has been applied in some glaciers for many years.The Shuiguan River No.4 glacier,a small glacier with its area of 1.84 km2 in 1972,located in the east of the Qilian Mountains,China,was selected to study its ice elevation change using GPS measurement in 2007.This study was conducted on the ablation area with GPS-measured area 0.5 km2.The ice elevation change of the glacier was obtained by comparing the DEM obtained by a 1:50 000 topographic map made in 1972 with the DEM by GPS-measured data acquired in 2007.The differences of the two DEMs showed the thinning condition of the glacier was apparent.The mean thinning was 15±8 m with the mean thinning rate of 0.42±0.22 m a-1 for 1972-2007 in the measurement area,which equaled 0.38±0.20 m yr-1 in water equivalent(w.e.).The prominent thinning occurred on the south part of the glacier,which was the area near the glacier terminus with the maximum thinning of 41±8 m.Assuming the thinning value of 15±8 m for the glacier area below 4640 m a.s.l.,the wasting ice mass was calculated to be 6.4±3.2×10-3 km3 for 1972-2007,corresponding to 5.7±2.8×10-3 km3 w.e.,which meant that the montane runoff released by the glacier was at least 5.7±2.8×106 m3 between 1972-2007. | LI Jing LIU Shiyin SHANGGUAN Donghui ZHANG Yinsong | 2010 | Journal of Mountain Science2010，7，4： | 14 |
| 6 | Effect of Electrical Current on the Tribological Behavior of the Cu-WS_2-G Composites in Air and Vacuum显示文摘As the traditional graphite-based composites cannot meet the requirement of rapid developing modern industry, novel sliding electrical contact materials with high self-lubricating performance in multiple environments are eagerly required. Herein a copper-based composite with WS2 and graphite as solid lubricant are fabricated by powder metallurgy hot-pressed method. The friction and wear behaviors of the composites with and without current are investigated under the condition with sliding velocity of 10 m/s and normal load of 2.5N/cm 2 in both air and vacuum. Morphologies of the worn surfaces are observed by optical microscope and compositions of the lubricating films are analyzed by XPS. Surface profile curves and roughness of the worn surfaces are obtained by 2205 surface profiler. The results of wear tests show that the friction coefficient and wear volume loss of the composites with current are greater than that without current in both air and vacuum due to the adverse effects of electrical current which damaged the lubricating film partially and roughed the worn surfaces. XPS results demonstrate that the lubricating film formed in air is composed of oxides of Cu, WS2 , elemental S and graphite, while the lubricating film formed in vacuum is composed of Cu, WS2 and graphite. Because of the synergetic lubricating action of oxides of Cu, WS2 and graphite, the composites show low friction coefficient and wear volume loss in air condition. Owing to the fact that graphite loses its lubricity which makes WS2 become the only lubricant, severe adhesive and abrasive wear occur and result in a high value of wear rate in vacuum condition. The formation of the lubricating film on the contact interface between the brush and ring is one of the factors which can greatly affect the wear performance of the brushes. The low contact voltage drop of the composites in vacuum condition is attributed to the high content of Cu in the surface film. This study fabricated a kind of new sliding electrical contact self-lubricating composite with dual-lubricant which can work well in both air and vacuum environments and provides a comprehensive analysis on the lubrication mechanisms of the composite. | QIAN Gang FENG Yi LI Bin HUANG Shiyin LIU Hongjuan DING Kewang | 2013 | Chinese Journal of Mechanical Engineering2013，26，2： | 8 |
| 7 | Inhibitory effects of the extracts with different solvents from three compositae plants on cyanobacterium Microcystis aeruginosas显示文摘The algicidal activity of the terrestrial plants is a novel and promising means for alga control of eutrophic waters.In this study,three compositae plants - Artemisia annua(A.annua),Conyza canadensis(C.canadensis),and Erigeron annuus(E.annuus) were selected and antialgal activity of petroleum ether(PE),ethyl acetate(EA) and ethanol extracts of these plants on blue algae Microcystis aeruginosa was investigated.The result shows the EA extracts of these plants present the stronger inhibitory effects.The results of the further separation of PE and EA extracts according to water-solubility and acidity or alkalinity show that fatty acids and terpenoids in A.annua,terpenoids and organic acid in C.Canadensis and E.Annuus may be the main antialgal active constituents.This study suggested that the EA extracts of these plants could become the potential algicide to prevent water blooming. | NI LiXiao HAO XiangYang LI ShiYin CHEN ShiJin REN GaoXiang ZHU Liang | 2011 | Science China Chemistry2011，54，7： | 7 |
| 8 | UV/H2O2 oxidation of tri(2-chloroethyl) phosphate: Intermediate products, degradation pathway and toxicity evaluation显示文摘Tri(2-chloroethyl) phosphate(TCEP) with the initial concentration of 5 mg/L was degraded by UV/H2O2 oxidation process. The removal rate of TCEP in the UV/H2O2 system was 89.1% with the production of Cl-and PO4^3- of 0.23 and 0.64 mg/L. The removal rate of total organic carbon of the reaction was 48.8% and the pH reached 3.3 after the reaction. The oxidative degradation process of TCEP in the UV/H2O2 system obeyed the first order kinetic reaction with the apparent rate constant of 0.0025 min^-1( R^2 = 0.9788). The intermediate products were isolated and identified by gas chromatography-mass spectrometer. The addition reaction of HO · and H2O and the oxidation reaction with H2O2 were found during the degradation pathway of 5 mg/L TCEP in the UV/H2O2 system. For the first time, environment risk was estimated via the 'ecological structure activity relationships' program and acute and chronic toxicity changes of intermediate products were pointed out. The luminescence inhibition rate of photobacterium was used to evaluate the acute toxicity of intermediate products. The results showed that the toxicity of the intermediate products increased with the increase of reaction time, which may be due to the production of chlorine compounds. Some measures should be introduced to the UV/H2O2 system to remove the highly toxic Cl-containing compounds, such as a nanofiltration or reverse osmosis unit. | Qiuyi Ji Huan He Zhanqi Gao Xiaohan Wang Shaogui Yang Cheng Sun Shiyin Li Yong Wang Limin Zhang | 2020 | Journal of Environmental Sciences2020，32，12： | 4 |
| 9 | Effects of atmospheric circulation on summertime precipitation variability and glacier mass balance over the Tuyuksu Glacier in Tianshan Mountains, Kazakhstan显示文摘The amount and the form of precipitation have significant effects on glacier mass balances in high altitude mountain areas by controlling the accumulation, the ablation and the energy balance of a glacier through impact on the surface albedo. The liquid precipitation has negative effects on glacier accumulation and may increase the ablation of surface ice through the heat input for melting. The timing and the forms of precipitation over glacierized regions depend on the weather processes both locally and regionally. Early studies showed that regional to large-scale atmospheric circulation processes play a key role in affecting the precipitation events over glaciers. This paper analyzed the relationship between the inter-annual variability of the summertime precipitation over the Tuyuksu Glacier and the atmospheric circulation types, which related to various atmospheric circulation types in the Northern Hemisphere. Results indicated that the decrease in the duration of zonal processes and the increase in the meridional northern processes were observed in the last decade. The total summer precipitation associated with these processes also increased along with an increase of summertime solid precipitation. Although the decadal fluctuation of glaciological parameters were found in dependent of the above large-scale atmospheric circulation processes, global warming was a dominant factor leading to the mass loss in the recent decades under the background of the increase in precipitation over the Tuyuksu Glacier. | Nina K KONONOVA Nina V PIMANKINA Lyudmila A YERISKOVSKAYA LI Jing BAO Weijia LIU Shiyin | 2015 | Journal of Arid Land2015，7，5： | 4 |
| 10 | Monitoring thickness and volume changes of the Dongkemadi Ice Field on the Qinghai-Tibetan Plateau (1969-2000) using Shuttle Radar Topography Mission and map data显示文摘This paper presents the first measurement of multi-decadal thickness and volume changes(1969?2000)of the Dongkemadi Ice Field(DIF)in the Tanggula Mountains,central Qinghai-Tibetan Plateau,China,using multi-source remote sensing data.These include the Shuttle Radar Topography Mission(SRTM)Digital Elevation Model(DEM)acquired in February,2000,a DEM generated by digitising analogue topographic maps from 1969,and Landsat ETM?imagery from 2000.Digital glacier outlines and GIS-based processing were used to calculate an elevation difference map to evaluate the relative elevation error of these two DEMs over ice-free areas.This methodwas also used to identify regions of glacier elevation thinning and thickening corresponding to glacier mass loss and gain.Analysis of 67,520 points on flat grass and rock terrain surrounding the DIF,with a slope less than 258,showed a mean elevation difference of?0.90 m and a standard deviation of 5.58 m.A thickness change error within 96 m was estimated.Between 1969 and 2000,76.51%of the whole DIF area appeared to be thinning while 23.49%showed thickening.The average glacier surface thinning was?12.58 m with a standard deviation of 18.29 m and the estimated volume loss was 1.17 km 3.The standard deviation of volume change was 0.0006 km 3 over the DIF.A thinning rate up to 0.4190.194 m a?1 or 0.038 km 3 a?1 for the volume loss was observed for the whole ice field,which seems to be evidence for the ongoing retreat of glaciers on the Qinghai-Tibetan Plateau.It was found that the spatial thickness change pattern derived from the remote sensing method was consistent with the thickness change results of the Small Dongkemadi Glacier(SDG)from field measurements.The estimated error of the annual thickness change rate was on the order of 5%.The relationship between elevation change and absolute glacier elevation over typical glaciers was also analysed,showing considerable variability.These changes have possibly resulted from increased temperature and decreased precipitation in this region. | Zhen Li Qiang Xing Shiyin Liu Jianmin Zhou Lei Huang | 2012 | International Journal of Digital Earth2012，5，6： | 2 |
| 11 | Snow cover distribution, varia- bility, and response to climate change in Western China 显示文摘 | Qin Dahe Liu Shiyin Li Peiji | 2006 | Journal of Climate2006，19，9： | 1 |
| 12 | Snow cover distribution, variability and response to climate change in western China 显示文摘 | Qin Dahe Liu Shiyin Li Peiji | 2006 | Journal of Climate2006，19，： | 1 |
| 13 | Occurrence, partition behavior, source and ecological risk assessment of nitro-PAHs in the sediment and water of Taige Canal, China显示文摘Nitrated polycyclic aromatic hydrocarbons(NPAHs)are widespread organic pollutants that possess carcinogenic and mutagenic properties,so they may pose a risk to the environment and human health.In this study,the concentrations of 15 NPAHs and 16 polycyclic aromatic hydrocarbons(PAHs)in 30 surface water samples and 26 sediment samples were measured in 2018 from the Taige Canal,one of the main rivers flowing into Taihu Lake,China.The total NPAH concentrations in water and sediment ranged from 14.7 to 235 ng/L and 22.9 to 96.5 ng/g dw,respectively.9-nitrophenanthrene(nd–76.3 ng/L)was the dominant compound in surface water,while 2+3-nitrofluoranthene(1.73–18.1 ng/g dw)dominated in sediment.Among PAHs,concentration ranging from 1,097 to 2,981 ng/L and 1,089 to 4,489 ng/g dw in surface water and sediment,respectively.There was a strong positive correlation between the log octanol-water partition coefficient(Kow)and log sediment-water partition coefficient due to hydrophobic interaction.The fugacity fraction value increased with the decrease of log Kow,and chrysene was transferred from water into sediment.The residual NPAHs in surface water and sediment of the Taige Canal have partial correlation.Diesel engine and coal combustion emissions were probably the principal sources of NPAHs in surface water and sediment.The results of ecological risk assessment showed that some NPAHs inwater(e.g,1-nitropyrene and 6-nitrochrysene)and sediment(e.g.,2-nitrobiphenyl,5-nitroacenaphthene,9-nitrophenanthrene and 2+3-nitrofluoranthene)had moderate ecological risks,which should be of concern. | Jijie Kong Tao Ma Xiaoyu Cao Weidi Li Fengxiao Zhu Huan He Cheng Sun Shaogui Yang Shiyin Li Qiming Xian | 2023 | Journal of Environmental Sciences2023，，2： | 1 |
| 14 | Snow cover distribution, variabili- ty, and response to climate change in Western China显示文摘 | Qin Dahe Liu Shiyin Li Peiji | 2006 | Journal of Climate2006，19，9： | 1 |
| 15 | Visual attention guided bit alloca- tion in vide() compression 显示文摘 | LI Zhicheng QIN Shiyin ITTI L | 2011 | Image and Vision Computing2011，29，1： | 1 |
| 16 | Snow cover distribution, varia- bility, and response to climate change in western China 显示文摘 | Qin Dahe Liu Shiyin Li Peiji | 2006 | Journal of Climate2006，19，： | 1 |
| 17 | Snow cover distribution, varia- bility, and response to climate change in western China 显示文摘 | Qin Dahe Liu Shiyin Li Peiji | 2006 | Journal of Climate2006，19，9： | 1 |
| 18 | The retreat of glaciers in response to recent climate warming in western China 显示文摘 | Ding Yongiian Liu Shiyin Li Jing | 2006 | Annals of Glaciology2006，43，： | 1 |
| 19 | The retreat of glac- iers in response to recent climate warming in western China显示文摘 | Ding Yongjian Liu Shiyin Li Jing | 2006 | Annals of Glaciology2006，43，1： | 1 |
| 20 | Interaction between Humic Acid and p-Arsanilic Acid Using Fluorescence Quenching Approach显示文摘P-arsanilic acid(p-ASA),as a kind of organoarsenic feed additive,has been widely used in poultry and swine breeding.However,it has caused the arsenic pollution around the farm.Currently data shows humic acid(HA)is closely to the migration and transformation of p-ASA.Therefore,the interaction between p-ASA and HA was investigated by using the method of fluorescence quenching titration.The association constant changed from2.74 to 4.88 L·mol-1at a p H varying from 5 to 9 and reached the maximum at p H 7.In addition,log K varied from4.15 to 5.02 L·mol-1when the temperature increased from 15℃to 35℃.The log K increased with an increase in the concentration of HA.The dominant mechanism between p-ASA and HA is static quenching.The primary interaction force was likely the hydrogen bond,and the binding behavior occurred on the As-O stretch of p-ASA and the carboxylic acid C=O stretch of HA.The results showed that dissolved organic matters could affect the fate and biogeochemical cycling of organoarsenic pharmaceuticals in aquatic ecosystems. | Ge Siyi Zhou Hong Song Jia Yu Jia Wei Wei Li Shiyin | 2017 | 生态毒理学报2017，12，3： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员