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| 1 | Effect of sample size on the fluid flow through a single fractured granitoid显示文摘Most of deep geological engineered structures,such as rock caverns,nuclear waste disposal repositories,metro rail tunnels,multi-layer underground parking,are constructed within hard crystalline rocks because of their high quality and low matrix permeability.In such rocks,fluid flows mainly through fractures.Quantification of fractures along with the behavior of the fluid flow through them,at different scales,becomes quite important.Earlier studies have revealed the influence of sample size on the confining stress-permeability relationship and it has been demonstrated that permeability of the fractured rock mass decreases with an increase in sample size.However,most of the researchers have employed numerical simulations to model fluid flow through the fracture/fracture network,or laboratory investigations on intact rock samples with diameter ranging between 38 mm and 45 cm and the diameter-to-length ratio of 1:2 using different experimental methods.Also,the confining stress,σ_3,has been considered to be less than 30 MPa and the effect of fracture roughness has been ignored.In the present study,an extension of the previous studies on 'laboratory simulation of flow through single fractured granite' was conducted,in which consistent fluid flow experiments were performed on cylindrical samples of granitoids of two different sizes(38 mm and 54 mm in diameters),containing a 'rough walled single fracture'.These experiments were performed under varied confining pressure(σ_3=5-40 MPa),fluid pressure(f_p ≤25 MPa),and fracture roughness.The results indicate that a nonlinear relationship exists between the discharge,Q,and the effective confining pressure,σ_(eff),and Q decreases with an increase in σ_(eff).Also,the effects of sample size and fracture roughness do not persist when σ_(eff)≥ 20 MPa.It is expected that such a study will be quite useful in correlating and extrapolating the laboratory scale investigations to in-situ scale and further improving theoretical/numerical models associated with fluid flow through rock masses. | Kunal Kumar Singh Devendra Narain Singh Ranjith Pathegama Gamage | 2016 | Journal of Rock Mechanics and Geotechnical Engineering2016，8，3： | 5 |
| 2 | Numerical study of fractional model of multi-dimensional dispersive partial differential equation显示文摘This article is devoted to a newly introduced numerical method for time-fractional dispersive partial differential equation in a multidimensional space.The time-fractional dispersive partial differential equation plays a great role in solving the problems arising in ocean science and engineering.The numerical technique comprises of Sumudu transform,homotopy perturbation scheme and He’s polynomial,namely homotopy perturbation Sumudu transform method(HPSTM)is efficiently used to examine time-fractional dispersive partial differential equation of third order in multi-dimensional space.The approximate analytic solution of the time-fractional dispersive partial differential equation of third-order in multi-dimensional space obtained by HPSTM is compared with exact solution as well as the solution obtained by using Adomain decomposition method.The results derived with the aid of two techniques are in a good agreement and consequently these techniques may be considered as an alternative and efficient approach for solving fractional partial differential equations.Several test problems are experimented to confirm the accuracy and efficiency of the proposed methods. | Vijay Verma Amit Prakash Devendra Kumar Jagdev Singh | 2019 | Journal of Ocean Engineering and Science2019，4，4： | 2 |
| 3 | Microwave enhanced synthesis of chitosan graftpolyacrylamide显示文摘 | VANDANA Singh ASHUTOSH Tiwari DEVENDRA NarayanTdpmhi | 2006 | Science Direct2006，47，： | 1 |
| 4 | Microwave synthesized chitosan-graftpoly (methylmethacrylate):An efficient Zn2 + ion binder显示文摘 | Singh Vandana Tripathi Devendra Narayan Tiwari Ashutosh | 2006 | Car bohydr-ate Polymers2006，，65： | 1 |
| 5 | Microwave enhanced synthesis of chitosan- graft- polyacrylamide 显示文摘 | Vandana Singh Ashutosh Tiwari Devendra Narayan Tripathi | 2006 | Polymer2006，47，18： | 1 |
| 6 | 闪光对于减轻静脉置管痛的作用:一项前瞻性随机安慰剂对照研究显示文摘背景尽管静脉置管时的疼痛经常让人备受困扰,但通常都是在没有任何镇痛措施下进行静脉置管的。临床上曾尝试用一些药物和非药物方法来减轻静脉置管的疼痛,但结果各异。本研究拟评价一次闪光对于减轻静脉置管痛的效果。方法90例拟择期行腹腔镜胆囊切除术的ASAⅠ~Ⅱ级的成年患者(15~60岁),随机分为3组,每组30例,组1为对照组;组2为分散注意力组,即在非优势手的手背静脉进行置管前给患者照相而不使用闪光;组3为闪光组,静脉置管前照相并且使用闪光;在照相后立即使用18G的穿刺针进行静脉置管。结果每组均有2例患者首次静脉穿刺失败,在数据分析中即予以剔除,闪光组疼痛的发生率为50%(28例中14例发生),其他2组为100%(28例全部发生),通过视觉模拟评分评估的疼痛严重程度分散注意力组和闪光组显著低于对照组,而闪光组也显著低于分散注意力组。结论静脉置管前使用闪光是一种减轻疼痛的安全而简单有效的方法。 | Anil Agarwal GhanshvamYadav Devendra Gupta Manish Tandon Prabhat Kumar Singh Uttam Singh 吴志林(译) | 2009 | 麻醉与镇痛2009，，3： | 1 |
| 7 | Microwave enhanced synthesis of chi- tosan-graft-polyacrylamide 显示文摘 | Vandana Singh Ashutosh Tiwari Devendra Narayan Tripathi | 2006 | Polymet2006，47，18： | 1 |
| 8 | Structural and relaxor behavior of (Ba 1? x La x )(Ti 0.85 Sn 0.15 )O 3 ceramics obtained by solid state reaction显示文摘 | Sindhu Singh Prabhakar Singh Om Parkash Devendra Kumar | 2010 | Journal of Alloys and Compounds2010，，1： | 1 |
| 9 | Effects of stenoses on non-Newtonian flow of blood in blood vessels显示文摘 | Om Prakash O. D. Makinde S. P. Singh Nidhi Jain Devendra Kumar | 2015 | International Journal of Biomathematics2015，8，1： | 1 |
| 10 | Effect of simultaneous substitution of La and Mn on dielectric behavior of barium titanate ceramic显示文摘 | Om Parkash Devendra Kumar R. K. Dwivedi K. K. Srivastava Prakash Singh Sindhu Singh | 2007 | Journal of Materials Science2007，，14： | 1 |
| 11 | Centrifuge modeling of moisture migration in silty soils 显示文摘 | Asha Poulose Smitha R Nair Devendra N Singh | 2000 | Joiumal of Geotechnical and Geoenvironmental Engineering2000，，： | 1 |
| 12 | A generalized procedure for determining thermal resistivity of soils 显示文摘 | Amepalli Dali Naidu Devendra Narain Singh | 2004 | International Journal of Thermal Sciences2004，43，： | 1 |
| 13 | Placental and neonatal outcome in maternal malaria显示文摘 | Jyoti Singh Dharmendra Soni Devendra Mishra H. P. Singh S. Bijesh | 2014 | Indian Pediatrics2014，，4： | 1 |
| 14 | Dielectric properties of calcium doped BaTi 0.85 Sn 0.15 O 3 : A diffuse phase transition显示文摘 | Sindhu Singh Prabhakar Singh Om Parkash Devendra Kumar | 2010 | Materials Chemistry and Physics2010，，2： | 1 |
| 15 | Identification of Mycobacterium tuberculosis genes preferentially expressed during human infection显示文摘 | Manoj Kumar Farrah G. Khan Sandeep Sharma Rajinder Kumar Jaya Faujdar Rahul Sharma Devendra S. Chauhan Rajinder Singh Shyam K. Magotra Inshad A. Khan | 2010 | Microbial Pathogenesis2010，，1： | 1 |
| 16 | The impact of assimilation of satellite derived wind observations for the prediction of a monsoon depression over India using a mesoscale model显示文摘 | V. F. Xavier A. Chandrasekar Devendra Singh | 2008 | International Journal of Remote Sensing2008，，24： | 1 |
| 17 | Mocrowave enhanced synthesis of ehitosan - graft - polyacylamide显示文摘 | Singh Vandana Tiwari Ashutosh Tripathi Devendra Narayan | 2006 | Polymer2006，，47： | 1 |
| 18 | Reconstruction of chronic acromioclavicular joint disruption with artificial ligament prosthesis显示文摘Rockwood 类型 3 acromioclavicular 混乱的 ObjectiveManagement 是争论的一件事。我们起初应该采用保守或起作用的措施表示吗?它不是清楚的,但是大多数证据赞成保守管理。我们在场我们在管理长期的 Rockwood 类型 3 acromioclavicular 关节混乱的八个盒子的一个未来的系列通过手术对待的在场的这些病人 surgically.MethodsWe 的经验。coracoclavicular 系带的解剖重建被病人是的人工的编织聚酯系带 prosthesis.ResultsAll 做能从第 14 手术后的天的一般水准执行每日的活动。所有病人疼痛地感到了改进,与在平均视觉类似物规模从的减少外科手术前到 2.0 个点(范围 0-5 点) 的 6.5 个点(范围 3-9 点) ,从 59% ~ 91% 的经常的分数和美国肩膀和肘外科医生手术后地从 65 ~ 93 个点承担 20。改进或至少在中间的后续上仍然保持静止的这些结果,和没有恶化在人工的系带修复术的 46 months.ConclusionThis 期中考试结果分析的平均后续被记录是有修复术的第一如此的后续研究。我们的结果是令人鼓舞的并且认为这种相对新、容易可再现的技术的进一步的使用和评估正当。 | Devendra Kumar Chouhan Uttam Chand Saini Mandeep Singh Dhillon | 2013 | Chinese Journal of Traumatology2013，16，4： | 1 |
| 19 | Pretreatment with Thiopental for Prevention of Pain Associated with Propofol Injection显示文摘 | Anil Agarwal Mohammad F. Ansari Devendra Gupta Ravindra Pandey Mehdi Raza Prabhat K. Singh Shiopriye Sanjay Dhiraj Uttam Singh | 2004 | Anesthesia & Analgesia2004，，3： | 1 |
| 20 | Gallic Acid-Phospholipid Complex: Drug Incorporation and Physicochemical Characterization显示文摘 | Devendra Singh Mohan Singh Maniyari Rawat Ajay Semalty Mona Semalty | 2011 | Letters in Drug Design & Discovery2011，，3： | 1 |
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