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36篇 您的检索式:作者名="Kumar Prabhat"
    题名 作者 年代 出处 被引量
1Studies on the management of root-knot nematode, Meloidogyne incognita-wilt fungus, Fusarium oxysporum disease complex of green gram, Vigna radiata cv ML-1108显示文摘Studies were conducted under pot conditions to determine the comparative efficacy of carbofuran at 1 mg a.i./kg soil, bavistin at 1 mg a.i./kg soil, neem (Azadirachta indica) seed powder at 50 mg/kg soil, green mould (Trichoderma harzianum) at 50.0 ml/kg soil, rhizobacteria (Pseudomonas fluorescens) at 50.0 ml/kg soil against root-knot nematode, Meloidogyne incog-nita–wilt fungus, Fusarium oxysporum disease complex on green gram, Vigna radiata cv ML-1108. All the treatments significantly improved the growth of the plants as compared to untreated inoculated plants. Analysis of data showed that carbofuran and A. indica seed powder increased plant growth and yield significantly more in comparison to bavistin and P. fluorescens. Carbofuran was highly effective against nematode, bavistin against fungus, A. indica seed powder against both the pathogens and both the bioagents were moderately effective against both the pathogens.HASEEB Akhtar SHARMA Anita SHUKLA Prabhat Kumar 2005Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2005,6,8:6
2A Comparison of SWAT Model Calibration Techniques for Hydrological Modeling in the Ganga River Watershed显示文摘恒河是印度最长的河流,目前正遭受人类活动和气候变化的影响,其中瓦拉纳西区域所受的影响尤为严重。预计气候变化和不断扩张的人口会进一步影响水资源的有效利用。本研究利用水土评价工具(soil and water assessment tool,SWAT)模型进行水文模拟,研究区选择恒河流经的印度北方邦南部地区,覆盖面积达15 621.612 km^2。本研究主要目标如下:(1)检验SWAT模型在径流和产沙量预测方面的可行性和适用性,(2)对序贯不确定性分析(SUFI-2)、普适似然不确定性估计(GLUE)和并行求解(ParaSol)这3种常规校准算法进行对比分析,并确定出最佳校准算法。SWAT模型中输入数据的来源为航天飞机雷达地形测绘任务(SRTM)获取的数字高程模型(DEM)、Landsat-8卫星图像、土壤数据和逐日气象数据。首先,本研究将研究流域划分为46个子流域,使用土地利用/土地覆被(LULC)图和土壤图创建了水文响应单元(HRU)。然后,构建了基于SUFI-2、GLUE和ParaSol算法的模型,并基于5类标准对这些校准算法进行了比较,标准包括目标函数、使用概念、性能、P因子和R因子值。研究结果表明:(1) SUFI-2算法需要的运行时间较少,同时校准结果最好,ParaSol算法最差;(2)使用SUFI-2算法对模型进行校准后,获得对模拟结果影响最显著的5个敏感参数——主河道水力传导率(CH_K2)、USLE方程水土保持因子(USLE_P)、主河道曼宁系数值(CH_N2)、地表径流滞后时间(SURLAG)以及土壤有效含水量(SOL_AWC);(3) 40号子流域(SW#40)产生的径流量最大,土地利用类型为荒地的36号子流域(SW#36)的产沙量最大,达到50 t·a^(–1)。研究区的平均蒸散量为411.55 mm·a^(–1)。校准后的模型可以用于探究未来LULC的变化、气候变化和土壤侵蚀的影响。Nikita Shivhare Prabhat Kumar Singh Dikshir Shyam Bihari Dwivedi 2018Engineering2018,4,5:6
3Role of percutaneous cerclage wire in the management of subtrochanteric fractures treated with intramedullary nails显示文摘PurposeCerclage 电线申请作为潜在的治疗学的附属物出现了到为 subtrochanteric 破裂钉的 intramedullary。但是它的流行被可能的否定效果的担心在破裂地区生物学上折磨。这研究被打算分析与 cerclage 电线 application.MethodsRetrospective 分析联系的 clinico 放射学的结果和复杂并发症在破裂操作了, intramedullary 在 2012 年 1 月和 2016 年 1 月之间钉的所有 subtrochanteric 上被执行。在排除以后, 48 个病人与 20.8 个月的平均后续是可得到的。长倾斜,有蝴蝶碎片的螺线,螺线楔或弄碎的破裂配置特别地为 cerclage 电线申请被考虑,它被经皮的 cerclage passer 在 21 个病人采用。评价到鸫类 dAubigne-Postel score.ResultsAverage 操作时间以操作时间,血损失,减小的质量,颈柄角度,后续排水量,联合时间,复杂并发症,和最后的功能的评估被做,血损失在 cerclage 组是显著地更高的(p ?Vivek Trikha Saubhik Das Prabhat Agrawal Arkesh M Sunil Kumar Dhaka 2018Chinese Journal of Traumatology2018,21,1:4
4Myanmar-Andaman-Sumatra Subduction Margin Revisited:Insights of Arc-Specific Deformations显示文摘We address the role of the concave and convex arcs(as observed from the subducting plate)on the deformation occurring along the Myanmar-Andaman-Sumatra margin.We categorize the pre-and post-seismic deformations of the lithosphere using earthquake database occurring either prior to 26th December 2004 M_w 9.3 off-Sumatra mega-event or after the incidence.Analysis under pre-seismic domain shows that area near Sumatra records highest seismicity,which largely drops in the area past the North Andaman,and further increases towards north.Shallowest depth and minimum dip of the subducting lithosphere is recorded at the central segment where the arc transformed into concave shape.The annual moment energy release during earthquake decreases to more than two orders of magnitude past the North Andaman towards north under post-seismic deformation phase.Higher depths of continuity of events are presumably associated with more dipping Benioff zones in both the Indo-Myanmar and Andaman-Nicobar convex arcs.These observations obviously account for tectonic subdivision of the margin near concave shape arc around the central part.Absence of volcanism,presence of splay faults in the back-arc,sharp reduction in seismicity near central segment are interpreted to be caused by major tectonic impact of the NNE-ward converging buoyant Ninety-east Ridge against the Asian Plate.Shallowest dip,small elastic thickness,weak converging Indian lithosphere,and evidences of series of en-echelon blocks off the eastern side of the broken northern Ninetyeast Ridge might be incapable of generating great earthquake in this area.Prosanta Kumar Khan Sk Shamim Manoranjan Mohanty Prabhat Kumar Jayashree Banerjee 2017Journal of Earth Science2017,28,4:4
5Dynamic analysis and identification of unbalance and misalignment in a rigid rotor with two offset discs levitated by active magnetic bearings:a novel trial misalignment approach显示文摘Rotating machinery is an essential and crucial component of numerous mechanical systems in modern industries,transport vehicles,and in several other applications.Excessive vibrations on rotating equipment due to multiple faults may cause catastrophic failure in machines and lead to hazardous accidents.So,there is a need for perceiving the dynamic nature and identifying the faults for the safe,smooth and effective operation of machines.This paper proposes a novel trial misalignment approach to estimate the misalignment with a similar concept as the trial unbalance in the rotor balancing.Active magnetic bearing(AMB)misalignment with the rotor has been investigated with residual misalignment and additional trial misalignment cases.Additional trial misalignments are provided in addition to the unknown misalignments of the residual misalignment case.For the execution of this methodology,the dynamic model of a four-degree-of-freedom unbalanced and misaligned rigid rotor with two offset discs supported by two active magnetic bearings has been mathematically developed.The offset discs result in the gyroscopic effect at high rotor speeds.Equations of motion of the rotor-AMB system have been derived and solved to generate the time domain rotor displacement and controlling current responses at AMB positions.A fast Fourier transform technique has been utilized to convert the time domain responses into the frequency domain for estimation of unbalance eccentricities and phases together with force-displacement and forcecurrent stiffnesses of misaligned AMBs as well as AMB's constant forces using the developed identification algorithm.Identified values of AMB's parameters for both residual and additional trial misalignment cases are evaluated to estimate the four unknown misalignments.Testing of the algorithm has also been carried out at multiple spin speeds against measurement signal noise in rotor responses and bias errors in rotor system parameters to check its effectiveness and robustness.The algorithm is found to be exhibiting excellent.Prabhat Kumar Rajiv Tiwari 2021Propulsion and Power Research2021,10,1:3
6Extraction of locked-up coal by strengthening of rib pillars with FRP--A comparative study through numerical modelling显示文摘In some of the coalfields in India, coal seams are only developed but no extraction of pillars is possible due to the presence of surface or sub-surface structures and also non-availability of stowing materials which leads to huge amounts of coal being locked-up underground. Spontaneous heating and fire, accumulation of poisonous gases, severe stability issues leading to unsafe workings and environmental hazards are the major problems associated with the developed coal pillars. So, there is a pressing need for a technology for the mining industry to extract the huge amount of coal locked-up under different constraints. In this study, the locked-up coal is proposed to be extracted by artificially strengthening the rib pillars. The detailed comparative study is carried out to know the increase of extraction percentage of locked-up coal by strengthening the rib pillars with FRP. Extraction methodology is designed and studied through numerical modelling for its stability analysis to evaluate its suitability of application in underground.Das Arka Jyoti Mandal Prabhat Kumar Ghosh Chandra Nath Sinha Amalendu 2017International Journal of Mining Science and Technology2017,27,2:3
7Frameworks of Non-Orthogonal Multiple Access Techniques in Cognitive Radio Communication Systems显示文摘Recently,the increasing demand of radio spectrum for the next generation communication systems due to the explosive growth of applications appetite for bandwidths has led to the problem of spectrum scarcity.The potential approaches among the proposed solutions to resolve this issue are well explored cognitive radio(CR)technology and recently introduced non-orthogonal multiple access(NOMA)techniques.Both the techniques are employed for efficient spectrum utilization and assure the significant improvement in the spectral efficiency.Further,the significant improvement in spectral efficiency can be achieved by combining both the techniques.Since the CR is well-explored technique as compared to that of the NOMA in the field of communication,therefore it is worth and wise to implement this technique over the CR.In this article,we have presented the frameworks of NOMA implementation over CR as well as the feasibility of proposed frameworks.Further,the differences between proposed CR-NOMA and conventional CR frameworks are discussed.Finally,the potential issues regarding the implementation of CR-NOMA are explored.Prabhat Thakur Alok Kumar S Pandit G Singh S N Satashia 2019China Communications2019,16,6:3
8爆炸包层中不锈钢丝网夹层对不同等级铝板的影响(英文)显示文摘尝试将不锈钢丝网夹层与Al5052–Al1100板的爆炸包层接合,并优化其加载比和间隔距离等参数。加载比(R)和间隔距离(S)的增加提高了板速度(V_p),动态弯曲角(β)和产生的压力(P)。爆炸包层的界面形态证实了金属丝网和铝板之间的强烈冶金结合。此外,实现了从直的到波状层间形貌的平滑过渡。将金属丝网作为夹层,提高了机械强度,但稍微降低了'爆炸包层'的整体耐腐蚀性。SARAVANAN S RAGHUKANDAN K PRABHAT Kumar 2019Journal of Central South University2019,26,3:2
9Recent contributions of the Kaiserslautern research group to thin silicon solar cell R&D applying the HW(Cat)CVD显示文摘Schroeder Bernd Kupich Markus Kumar Prabhat 2008Thin Solid Films2008,516,:1
10Preparation of microcrystalline silicon nip solar cells and a-morphous-microcrystalline nipnip tandem solar cells entirely by hot-wire CVD显示文摘Kupich Markus Grunsky Dmitry Kumar Prabhat 2006Thin Solid Films2006,501,:1
11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
12Comparison of Microstructure and Properties of Modified 9Cr-1Mo Welds Produced by Narrow Gap Hot Wire and Cold Wire Gas Tungsten Arc Welding Processes显示文摘Aravinda Pai Irappa Sogalad S.K. Albert Prabhat Kumar T.K. Mitra S. Basavarajappa 2014Procedia Materials Science2014,,:1
13PDZ domain-mediated dimer- ization and homeodomain-directed specificity are required for high-af- finity DNA binding by SATB1 显示文摘Prabhat KP Sunita S Kumar PP 2008Nucleic Acids Research2008,36,7:1
14Evaluation of load transfer mechanism under axial loads in a novel coupler of dual height rock bolts显示文摘The effective reinforcement of two or more overlying layers of mine openings in a single installation is usually done by coupling of two standard rock bolts mainly during the extraction of medium-thick coal seams.However,field observations show that the couplers of multiple bolts often degrade or break mostly at their connections.These types of failures can be avoided by strengthening the couplers of such multi-bolts assemblies.To achieve this,a novel threaded coupler system with an expansion shell was suggested in this paper.The newly designed coupler consists of a threaded tapered-plug-cumconnector with an expansion shell for connecting and tightening two standard rock bolts.An analytical model for evaluating the load distribution along the coupler subject to axial load was derived.Numerical analysis was performed to analyse the load transfer,deformation,and strains across the coupler including the factor of safety for the bolt-coupler-resin and bolt-coupler-expansion shell.The results validated the analytical model of the proposed coupler design,which provides better anchorage near the interface of the host rock mass.Thus,the developed coupler design would reduce the failures of the proposed coupler and stabilize laminated roof strata above the medium-thick coal seams in underground mines.Ranjan Kumar Prabhat Kumar Mandal Ashish Narayan Arka Jyoti Das 2021International Journal of Mining Science and Technology2021,31,2:1
15Phosphorylation of SATB1,a global gene regulator,acts as a molecular switch regulating its transcriptional activity in vivo显示文摘Pavan Kumar P Prabhat Kumar Purbey Chandan Kumar Sinha 2006Molecular Cell2006,22,:1
16Characterization of Novel Plant Growth Promoting Endophytic Bacterium Achromobacter xylosoxidans from Wheat Plant显示文摘Prabhat Jha Ashok Kumar 2009Microbial Ecology2009,,1:1
17Acetylation-dependent interaction of SATB1 and CtBP1 mediates transcriptional repression by SATB1显示文摘Prabhat Kumar Purbey Sunita Singh Dimple Notani 2009Molecular and Cellular Biology2009,29,5:1
18Phosphorylation of SATB1, a Global Gene Regulator, Acts as a Molecular Switch Regulating Its Transcriptional Activity In Vivo显示文摘P. Pavan Kumar Prabhat Kumar Purbey Chandan Kumar Sinha Dimple Notani Amita Limaye Ranveer S. Jayani Sanjeev Galande 2006Molecular Cell2006,,2:1
19Prevalence of hypothyroidism and effect of thyroid hormone replacement therapy in patients with non-alcoholic fatty liver disease:A population-based study显示文摘BACKGROUND Non-alcoholic fatty liver disease(NAFLD)is currently considered as the most common cause of chronic liver disease worldwide.Risk factors for NAFLD have been well-described,including obesity,type 2 diabetes mellites(T2DM),dyslipidemia(DLP)and metabolic syndrome.Hypothyroidism has been identified as an independent risk factor for the development of NAFLD,although the literature is inconsistent AIM To evaluate the prevalence of hypothyroidism in patients with NAFLD,assess if it is an independent risk factor and explore the effect of thyroxine replacement therapy.METHODS Our cohort’s data was obtained using a validated,large,multicenter database(Explorys Inc,Cleveland,OH,United States)aggregated from pooled outpatient and inpatient records of 26 different healthcare systems,consisting of a total of 360 hospitals in the United States,and utilizing Systematized Nomenclature of Medicine-Clinical Terms for coding.We evaluated a cohort of patients with hypothyroidism and NAFLD.Multivariate analysis was performed to adjust for confounding risk factors including hypertension(HTN),T2DM,DLP,obesity and metabolic syndrome.SPSS version 25,IBM Corp was used for statistical analysis,and for all analyses,a 2-sided P value of<0.05 was considered statistically significant.Exclusion criteria were limited to age<18 years.RESULTS Among the 37648180 included individuals in this database who are above the age of 18 years,there were a total of 2320 patients with NAFLD(6.16 per 100000)in the last five years(2015-2020),amongst which 520 patients(22.4%)had hypothyroidism.Baseline characteristics of patients in this database are described in Table 1.Patients with NAFLD were also more likely to have obesity,T2DM,DLP,HTN,and metabolic syndrome(Table 2).While males and females were equally affected,patients in the age group 18-65 years as well as Caucasians seem to be at a higher risk.There was an increased risk of NAFLD among patients with hypothyroidism(OR=1.587).Furthermore,thyroid hormone replacement was not associated with a decreased risk for developing NAFLD(OR=1.106,C=0.952-1.285,P=0.303).CONCLUSION Hypothyroidism seems to be an independent risk factor for the development of NAFLD.Thyroid hormone replacement did not provide a statistically significant risk reduction.Further studies are needed to evaluate the effect of thyroid hormone replacement and assess if being euthyroid while on thyroid replacement therapy affects development and/or progression of NAFLD.Ashraf Almomani Asif Ali Hitawala Prabhat Kumar Sura Alqaisi Dana Alshaikh Motasem Alkhayyat Imad Asaad 2022World Journal of Hepatology2022,14,3:1
20Environmental magnetic studies of particulates with special reference to biomagnetic monitoring using roadside plant leaves显示文摘Prabhat Kumar Rai 2013Atmospheric Environment2013,,:1
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