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| 1 | Dredging influenced sediment toxicity of endosulfan and lindane on black tiger shrimp (Penaeus monodon Fabricius) in Chantaburi River estuary in Thailand显示文摘Series of experiments, including background sediment elutriate, spiked-sediment elutriate and spiked- water toxicity tests, were carried out to study the effect of dredging on survivability and ecological competence of commercially important shrimp postlarvae of Penaeus monodon Fabricius. The test sediment represented the most contaminated from endosulfan and lindane in the Chantaburi river mouth estuary. The maximum sediment contamination levels were 49.4 μg/kg of endosulfan and 58.1 μg/kg of lindane in dry weight basis. Dose-response studies in static, non-renewal spiked-sediment elutriate toxicity tests revealed that LC 50 (96 h) values for survival effect based on measured concentrations were 0.50 (0.26-0.95) μg/L for endosulfan and 0.92 (0.63-1.34) μg/L for lindane. The LOECs for endosulfan and lindane were 0.141 and 0.429 μg/L, respectively. The NOECs were estimated to be the dissoluted endosulfan and lindane concentrations from the Chantaburi estuary sediment. The effects on phenoloxidase enzyme activity in shrimp postlarvae exposed for sub-lethal to lethal doses in sediment elutriate were not significant (p>0.05) at all tested dose levels. The worst case dissolution concentrations of endosulfan and lindane in the water column upon simulatory dredging in the Chantaburi estuary were found to be toxic to shrimp postlarvae on lethal and sub-lethal effects. The NOECs of respective chemicals (i.e., 0.034 and 0.16 μg/L) shared the same orders of magnitude for corresponding NOECs established for whole salt water aquatic life by the USEPA and 'safe' levels calculated by 0.01 safety factor approach. In addition, the significance of multiple pollutant assessments for ecological toxicity testing is highlighted. | Jayakody Arachchige SUMITH Preeda PARKPIAN Napaporn LEADPRATHOM | 2009 | International Journal of Sediment Research2009，24，4： | 5 |
| 2 | Estimating above-ground biomass by fusion of LiDAR and multispectral data in subtropical woody plant communities in topographically complex terrain in North-eastern Australia显示文摘We investigated a strategy to improve predicting capacity of plot-scale above-ground biomass(AGB) by fusion of LiDAR and Landsat5 TM derived biophysical variables for subtropical rainforest and eucalypts dominated forest in topographically complex landscapes in North-eastern Australia. Investigation was carried out in two study areas separately and in combination. From each plot of both study areas, LiDAR derived structural parameters of vegetation and reflectance of all Landsat bands, vegetation indices were employed. The regression analysis was carried out separately for LiDAR and Landsat derived variables individually and in combination. Strong relationships were found with LiDAR alone for eucalypts dominated forest and combined sites compared to the accuracy of AGB estimates by Landsat data. Fusing LiDAR with Landsat5 TM derived variables increased overall performance for the eucalypt forest and combined sites data by describing extra variation(3% for eucalypt forest and 2% combined sites) of field estimated plot-scale above-ground biomass. In contrast, separate LiDAR and imagery data, andfusion of LiDAR and Landsat data performed poorly across structurally complex closed canopy subtropical rainforest. These findings reinforced that obtaining accurate estimates of above ground biomass using remotely sensed data is a function of the complexity of horizontal and vertical structural diversity of vegetation. | Sisira Ediriweera Sumith Pathirana Tim Danaher Doland Nichols | 2014 | Journal of Forestry Research2014，25，4： | 2 |
| 3 | Distribution of errors in a classified map of satellite data显示文摘 | Sumith P | 1999 | Geocarto International1999，14，4： | 1 |
| 4 | Folate-targeted therapeutic and imaging agents for cancer显示文摘 | Philip Stewart Low Sumith Anurasiri Kularatne | 2009 | Current Opinion in Chemical Biology2009，，3： | 1 |
| 5 | Comparision of the therapeutic of epotin beta and epoetin alfa in maintenance phase hemodialysis patients显示文摘 | Alice L Galil R Sumith C | 2011 | Renal Failure2011，33，3： | 1 |
| 6 | Saturated FlowBoiling of Water in a Vertical Small Diameter Tube显示文摘 | Sumith B Kaminaga F Matsumura K | 2003 | Exp Thermal Fluid Science2003，27，： | 1 |
| 7 | Saturated flow boiling of water in a vertical small diameter tube 显示文摘 | Sumith B Kaminaga F Matsumura K | 2003 | Experimental Thermal and Fluid Science2003，27，7： | 1 |
| 8 | Determination of amino acids in rat vitreous perfusates by capillary electrophoresis 显示文摘 | Kongthong T O Sumith K Jose S P | 2004 | Electrophoresis2004，25，： | 1 |
| 9 | Saturated Flow Boiling of Water in a Vertical Small Diameter Tube 显示文摘 | Sumith B Kaminaga F Matsumura K | 2003 | Experimental Thermal and Fluid Science2003，27，： | 1 |
| 10 | Physical Properties of an Eclipsing Binary System, YY Eridani显示文摘Photometric observations of an eclipsing binary system, YY Eridani were done in blue (B) and yellow (V) wavelength bands and, finally, the light curve in each wavelength band was constructed. Orbital elements and physical properties of YY Eridani have been calculated using observational data of Binnendijk (1965) and authors have developed Wilson Devinney technique in analyzing the best solution of this eclipsing binary system. More physical parameters eg: orbital inclination, gravity darkening exponent, effective temperature, gravitational potential etc. of each component were calculated in this research for the best solution of YY Eridani. Synthetic light curves which were constructed from the best solution are in good correspondence with observational light curves of Binnendijk. When comparing with observational light curves obtained from this research, it was found that there exist the phase shift of 0 1. It is possible that physical properties of YY Eridani have been changed due to the rotation of its major axis or mass transfer mechanism of the system. | Boonrucksar Soonthornthum, Sumith Niparugs, Aniwat Sooksawat, Wim Nhuerpeng (Department of Physics, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand) | 1999 | 天文研究与技术1999，，S1： | 0 |
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