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| 1 | Nutrient dynamics in the Sundarbans mangrove estuarine system of Bangladesh under different weather and tidal cycles显示文摘Introduction:Seasonal and tidal variations in nutrient concentration and water quality were investigated in the western Sundarbans of Bangladesh during the post-monsoon,winter and monsoon seasons during 2010–2011.Methods:Water collected from the surface,middle and bottom layers at six locations of the Kholpetua-Arpangashia river system during high and low tides was analyzed for temperature,salinity,pH,dissolved oxygen(DO),total dissolved solids(TDS),electrical conductivity(EC)and dissolved nutrients(NO3–N,PO4–P,SO4 and NH3–N).Results:The study revealed that nutrient concentrations were influenced by seasonal changes.Mean nutrient levels during post-monsoon,winter and monsoon seasons,respectively,were in the following ranges:nitrate(0.06–0.40,0.06–0.46 and 0.08–0.46 mg/L);phosphate(0.09–0.18,0.05–0.42 and 0.10–0.16 mg/L);sulphate(58.71–86.14,68.68–119.01 and 78.15–136.47 mg/L)and ammonia(0.02–0.08,0.02–0.04 and 0.26–0.38 mg/L).Increased levels of PO4–P,SO4 and NH3–N and lower DO and salinity were recorded during the monsoon period.Most of the experimental sites showed higher NO3–N content during monsoon,whereas few elevated concentrations were observed during post-monsoon and winter periods.High and low tidal waters contained mean nutrient levels in the following ranges:nitrate(0.05–0.46 and 0.04–0.40 mg/L);phosphate(0.05–0.42 and 0.07–0.18 mg/L);sulphate(63.63–125.36 and 58.71–136.47 mg/L)and ammonia(0.02–0.38 and 0.02–0.37 mg/L)without following any distinct fluctuation patterns.The western part of the Sundarbans receives less freshwater input during the monsoon season than other areas of the ecosystem,which reduces the variability of nutrient levels and water quality components.Conclusions:This study provides considerable advances in understanding the seasonality of nutrient distribution with possible tidal influence.The data generated from this study will guide continuing efforts to support a sound management for coastal mangrove ecosystems. | Shak Md Bazlur Rahaman Lipton Sarder Md Sayadur Rahaman Alokesh Kumar Ghosh Sudhin Kumar Biswas SM Shahjahan Siraj Khandaker Anisul Huq Abul Farah Md Hasanuzzaman Shikder Saiful Islam | 2013 | Ecological Processes2013，2，1： | 2 |
| 2 | Pain management in mice using methanol extracts of three plants belongs to family Amaranthaceae显示文摘Objective:To investigate the analgesic activity of methanolic extract of Amaranthus viridis(A. viridis),Amaranthus caudatus(A.caudatus) and Amaranthus spinosus(A.spinosus).Methods:In this study,the analgesic activity of methanol extracts of all three plants at doses of 200 and 400 mg/kg were investigated by acetic acid-induced writhings test,hot plate test and tail immersion test for mice.Results:It was found that all the three plants showed significant pain management effect(P<0.01) at a dose of 400 mg/kg,but showed a less significant effect at a dose of 20 mg/kg in the entire tests used for evaluation of analgesic activities(P<0.05).Conclusions:Methanol extracts of A.viridis,A.caudatus and A.spinosus show potent analgesic activities,and this study provides the scientific proof for their traditional claims. | Ashok Kumar BS Lakshman K Jayaveera KN Vel Murgan C Arun Kumar PA Vinod Kumar R Meghda Hegade Sridhar SM | 2010 | Asian Pacific Journal of Tropical Medicine2010，3，7： | 2 |
| 3 | Photodynamic actions of indocyanine green and trypan blue on human lens epithelial cells in vitro显示文摘 | Melendez RF Kumar N Maswadi SM Zaslow K Glickmank RD | 2005 | Am J Ophthalmol2005，140，1： | 1 |
| 4 | Central corneal thickness changes after phaco emulsification cataract sur- gery 显示文摘 | Salvi SM Soong TK Kumar BV | 2007 | J Cataract Refract Surg2007，，33： | 1 |
| 5 | Nuclear orphan receptor TR3/ Nur77 mediates melanoma cell apoptosis 显示文摘 | Yu H Kumar SM Fang D | 2007 | Cancer Biol Ther2007，6，3： | 1 |
| 6 | The natural history of spontaneous osteonecrosis of the medial tibal plateau显示文摘 | Satku K Kumar VP Chong SM | 2003 | J Bone Joint Surg2003，85，： | 1 |
| 7 | Prevalence and risk factors of Metallo beta-lactamase producing Pseudomonas aeruginosa and Acinetobacter species in burns and surgical wards in a tertiary care hospital显示文摘 | Kumar SH De AS Baveja SM | | 0，，： | 1 |
| 8 | Isolation of a novel population of multipotent adult stem ceils from human hair follicles 显示文摘 | Yu H Fang D Kumar SM | 2006 | Am J Pathol2006，168，6： | 1 |
| 9 | Photodynamic action of indocyanine green and trypan blue on human lens epithelial cells in vitro显示文摘 | Melendez RF Kumar N Maswadi SM | 2005 | Am J Ophthalmol2005，140，1： | 1 |
| 10 | Pediatric pulmonary hypertension:Roles of endothelin-1 and nitric oxide 显示文摘 | Black SM Kumar S Wiseman D | 2007 | Clin Hemorheol Microcirc2007，37，12： | 1 |
| 11 | Retrieval of a separated nickel-titanium instrument using a modified 18-guage needle and cyanoacrylate glue:a case report显示文摘 | Andrabi SM Kumar A Iftekhar H | 2013 | Restor Dent Endod2013，38，2： | 1 |
| 12 | Candidemia in patients with diabetes mellitus : epidemiology and predictors of mortality 显示文摘 | Bader MS Lai SM Kumar V | 2004 | Scand J Infect Dis2004，36，1112： | 1 |
| 13 | Effect of dalton' s lymphoma on the antigenpresentation of murine peritoneal macrophages 显示文摘 | Kumar A Singh SM | 1995 | Cancer Letters1995，92，2： | 1 |
| 14 | Erythropoietin activates the phosphoinositide 3 - kinase/Akt pathway in human melanoma cells显示文摘 | Kumar SM Yu H Fong D | 2006 | Melanoma Res2006，16，4： | 1 |
| 15 | Genetic variants of platelet glycoprotein receptors and risk of stroke in young women显示文摘 | Reiner AP Kumar PN Schwartz SM | 2000 | Stroke2000，31，： | 1 |
| 16 | Genetic variants of platelet glycoprotein receptors and risk of stoke in young women显示文摘 | Reiner AP Kumar PN Schwartz SM | 2000 | Stroke2000，31，7： | 1 |
| 17 | MicroRNA-9 up-regulates E-cad- herin through inhibition of NF-kappaB1-Snaill pathway in melanoma显示文摘 | Liu S Kumar SM Lu H | 2012 | J Pathol2012，226，： | 1 |
| 18 | Isolation of a novel population of mu-ltipotent adult stem cells from human hair follicles显示文摘 | Yu H Fang D Kumar SM | 2006 | Am J Pathol2006，168，6： | 1 |
| 19 | Tuberculosis of spine (C1-D4)显示文摘 | Jain AK Kumar S Tuli SM | 1999 | Spinal Cord1999，37，5： | 1 |
| 20 | Oxidative stress and essential fatty acids in patients with risk and established ARDS 显示文摘 | Kumar KV Rao SM Gayani R | 2000 | Clin Chim Acta2000，298，12： | 1 |
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