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6篇 您的检索式:作者名="Naresh Singhal"
    题名 作者 年代 出处 被引量
1沼液灌溉对紫色土菜地土壤特性的影响显示文摘三峡库区山地城镇重肥效的沼液灌溉,既需做到能够充分利用粪污资源,又要不破坏植物的生长与土壤环境。试验采用某大型奶牛养殖场粪污处理站不同阶段的废水进行灌溉,其中包括:沉砂池污水(grit chamber wastewater,GCW)、集水池污水(collection basin wastewater,CBW)、厌氧池沼液(anaerobic tank wastewater,ATW)、好氧池出水(aerobic effluent,AE),并以清水(clean water,CW)作为对照组,5组试验平行同步对紫色土试验样地进行灌溉。土壤剖面铵态氮含量在0~5cm土层ATW为最大860mg/kg,5~10cm土层5个试验组含量略有升高,10~20cm土层试验组GCW、CBW、ATW、AE呈下降趋势。硝态氮含量在0~5cm土层仍是ATW最大为23.95mg/kg。有效磷在0~5cm土层5组试验都低于100mg/kg,5~10cm土层试验组CBW和CW含量上升较大分别为10%和11%,5个试验组总体磷吸收能力都为弱。在沼灌土壤自身承载量的试验中,土壤承载铵态氮最大值为1355mg/kg,硝态氮24.65mg/kg,有效磷为163.66mg/kg,磷吸收系数在第5~9d高于500。通过前期不同阶段污水灌溉研究氮、磷积累吸附及土壤自身承载力的试验,确定沼液灌溉能提供较多有效氮、磷的优良可行性,并为进一步提出合理灌溉量和实际操作提供指导。余薇薇 张智 罗苏蓉 毕生兰 Naresh Singhal 2012农业工程学报2012,28,16:20
2Countermeasures for local scour at offshore wind turbine monopile foundations:A review显示文摘Local scour at monopile foundations of offshore wind turbines is one of the most critical structural stability issues.This article reviews the contemporary methods of scour countermeasures at monopile foundations.These methods include armouring countermeasures(e.g.,riprap protection)to enhance the anti-scour ability of the bed materials and flow-altering countermeasures(e.g.,collars and sacrificial piles)to reduce downflow or change flow patterns around the monopiles.Stability number and size-selection equations for riprap armour layers are summarised and compared.Moreover,other alternative methods to riprap are briefly introduced and presented.A typical graph of the scour depth reduction with different collar sizes and elevations under specific test conditions is summarised and compared with a plot for a pile founded on a caisson.Reduction rates for different flow-altering countermeasures,including the collar,are listed and compared.A newly developed soil improvement method,namely microbially induced calcite precipitation(MICP),is also reviewed and introduced as a scour protection method.As a popular bio-soil treatment method,MICP has a good potential as a scour countermeasure method.Bio-soil treatment methods and traditional armouring methods are defined as active and passive soil enhancement scour countermeasures,respectively.Zi-hao Tang Bruce Melville Naresh Singhal Asaad Shamseldin Jin-hai Zheng Da-wei Guan Liang Cheng 2022Water Science and Engineering2022,15,1:4
3Modeling BiogeochemicalProcesses in Leachate-Contaminated Soils:A Review显示文摘 NARESH SINGHAL MI-CHAEL O' SULLIVAN 2001Transport in Porous Media2001,,43:1
4The role ofsalicylate and biosurfactant in inducing phenanthrene degradation in batch soil slurries 显示文摘Avery Gottfried Naresh Singhal Roy Elliot 2010Applied Microbiology and Biotechnology2010,86,:1
5The role of salicylate and biosurfactant in inducing phenanthrene degradation in batch soil slurries显示文摘Avery Gottfried Naresh Singhal Roy Elliot Simon Swift 2010Applied Microbiology and Biotechnology2010,,5:1
6Sediment retention by alternative filtration media configurations in stormwater treatment显示文摘Naresh Singhal Takis Elefsiniotis Navin Weeraratne 2008Water Air Soil Pollution2008,,187:1
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