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1125篇 您的检索式:作者名="Padhy"
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1Production of pig iron from red mud waste fines using thermal plasma technology显示文摘Red mud, an insoluble residue produced during alkali leaching of bauxite, is considered as a low-grade iron ore containing 30% to 50% iron. The present paper deals with the use of thermal plasma technology for producing pig iron from red mud waste fines. The smelting reduction of red mud was carried out in a 35 kW DC extended arc thermal plasma reactor. Red mud was properly mixed with fluxes and graphite (fixed carbon, 99%) as a reductant as per stoichiometric requirement. The effect of various process parameters like a reductant, fluxes and smelting time on iron recovery was studied and optimized. An optimum condition for the maximum recovery of iron was obtained. A new thermal plasma process applicable to direct iron making from red mud waste fines that would achieve significant utilization of red mud was proposed.K. Jayasankar P.K. Ray A.K. Chaubey A. Padhi B.K. Satapathy P.S. Mukherjee 2012International Journal of Minerals,Metallurgy and Materials2012,19,8:17
2Removal efficiency of fluoride by novel Mg-Cr-Cl layered double hydroxide by batch process from water显示文摘The fluoride ion removal from aqueous solution using synthesized Mg-Cr-Cl layered double hydroxide has been reported.Mg-Cr-Cl was characterized by X-ray powder diffraction,Fourier-transform infrared,thermo-gravimetric analysis,differential thermal analysis,and scanning electron microscope.Adsorption experiments were carried out in batch mode as a function of adsorption dosages,contact time,pH,and initial fluoride concentration to get optimum adsorption capacity.The adsorption kinetic study showed that the adsorption process followed first order kinetics.The fluoride removal was 88.5% and 77.4% at pH 7 with an adsorbent dose of 0.6 g/100 mL solution and initial fluoride concentration of 10 mg/L and 100 mg/L,respectively.The equilibrium was established at 40 min.Adsorption experiment data were fitted well with Langmuir isotherm with R 2 = 0.9924.Thermodynamic constants were also measured and concluded that the adsorption process was spontaneous and endothermic in nature.The removal percentage decreased slowly with increasing pH.This process is suitable for industrial effluents.The regeneration of the material is not possible.Sandip Mandal Swagatika Tripathy Tapswani Padhi Manoj Kumar Sahu Raj Kishore Patel 2013Journal of Environmental Sciences2013,25,5:7
3Surveillance of multidrug resistant uropathogenic bacteria in hospitalized patients in Indian显示文摘Objective:To record surveillance,antibiotic resistance of uropathogens of hospitalized patients over a period of 18 months.Methods:Urine samples from wards and cabins were used for isolating urinary tract infection(UTI)-causing bacteria that were cultured on suitable selective media and identified by biochemical tests;and their antibiograms were ascertained by Kirby-Bauer's disc diffusion method,in each 6-month interval of the study period,using 18 antibiotics of five different classes.Results:From wards and cabins,1 245 samples were collected,from which 996 strains of bacteria belonging to 11 species were isolated,during April 2011 to September2012.Two Gram-positive,Staphylococcus aureus(S.aureus)and Enterococcus faecalis(E.faecalis),and nine Gram-negative bacteria,Acinetobacter baumannii,Citrobactcr sp.,Escherichia coli,Enterobacter aerogenes,Klebsiella pneumoniae.Klebsiella oxytoca,Proteus mirabilis,Proteus vulgaris and Pseudomonas aeruginosa were isolated.Both S.aureus and E.faecalis were vancomycin resistant,and resistant-strains of all pathogens increased in each 6-month period of study.Particularly,all Gram-negatives were resistant to nitrofurantoin and co-trimoxazole,the most preferred antibiotics of empiric therapy for UTI.Conclusions:Antibiograms of 11 UTI-causing bacteria recorded in this study indicated moderately higher numbers of strains resistant to each antibiotic studied,generating the fear of precipitating fervent episodes in public health particularly with bacteria,Acinetobacter baumannii,Escherichia coli,Klebsiella pneumoniae and S.aureus.Moreover,vancomycin resistance in strains of S.aureus and E.faecalis is a matter of concern.Monali Priyadarsini Mishra Nagen Kumar Debata Rabindra Nath Padhy 2013Asian Pacific Journal of Tropical Biomedicine2013,3,4:6
4Optimization of fused deposition modeling process parameters using a fuzzy inference system coupled with Taguchi philosophy显示文摘Saroj Kumar Padhi Ranjeet Kumar Sahu S. S. Mahapatra Harish Chandra Das Anoop Kumar Sood Brundaban Patro A. K. Mondal 2017Advances in Manufacturing2017,5,3:4
5Prediction of daily sediment discharge using a back propagation neural network training algorithm:A case study of the Narmada River,India显示文摘Most of the studies on Artificial Neural Network (ANN) models remain restricted to smaller rivers and catchments. In this paper, an attempt has been made to correlate variability of sediment loads with rainfall and runoff through the application of the Back Propagation Neural Network (BPNN) algorithm for a large tropical river. The algorithm and simulation are done through MATLAB environment. The methodology comprised of a collection of data on rainfall, water discharge, and sediment discharge for the Narmada River at various locations (along with time variables) and application to develop a threelayer BPNN model for the prediction of sediment discharges. For training and validation purposes a set of 549 data points for the monsoon (16 June-15 November) period of three consecutive years (1996–1998) was used. For testing purposes, the BPNN model was further trained using a set of 732 data points of monsoon season of four years (2006–07 to 2009–10) at nine stations. The model was tested by predicting daily sediment load for the monsoon season of the year 2010–11. To evaluate the performance of the BPNN model, errors were calculated by comparing the actual and predicted loads. The validation and testing results obtained at all these locations are tabulated and discussed. Results obtained from the model application are robust and encouraging not only for the sub-basins but also for the entire basin. These results suggest that the proposed model is capable of predicting the daily sediment load even at downstream locations, which show nonlinearity in the transportation process. Overall, the proposed model with further training might be useful in the prediction of sediment discharges for large river basins.Nibedita Bisoyi Harish Gupta Narayan Prasad Padhy Govind Joseph Chakrapani 2019International Journal of Sediment Research2019,34,2:3
6Review: Progress and Trends in Ultrasonic Vibration Assisted Friction Stir Welding显示文摘This paper aims to reviewthe state-of-the-art of ultrasonic vibration assisted friction stir welding(UVAFSW) process. Particular attention has been paid on the modes of ultrasonic exertion,experimental results and effects of ultrasonic vibrations on process effectiveness and joint quality. The trends of various aspects with and without ultrasonic vibrations in FSW process are studied and presented. The influence of ultrasonic vibrations on welding loads, temperature history, weld morphology, material flow, weld microstructure and mechanical properties are revisited. Ultrasonic assisted FSW offers numerous advantages over the conventional FSW process. The superimposing of high-frequency vibrations improves various phenomena of the process and the physical,metallurgical,mechanical and tribological properties of the welded joint. The ultrasonic assisted FSW process has a potential to benefit the industry sector. A checklist listing the materials and process parameters used in the documented studies has been presented for quick reference.Najib Ahmad Muhammad Chuansong Wu Girish Kumar Padhy 2018Journal of Harbin Institute of Technology(New Series)2018,25,3:3
7四乙基溴化铵硫酸盐水溶液中钴的电沉积(英文)显示文摘在硫酸盐水溶液中制备钴金属,研究四乙基溴化铵作为添加剂对其结构和形貌特征的影响。根据四乙基溴化铵的浓度变化(范围为1~50 mg/L)来评价其对电沉积金属钴的电流效率、能量消耗和电沉积质量的影响。当四乙基溴化铵的浓度为10 mg/L,且电流效率为99.6%、能量消耗为2.38 k W·h/kg时,可以得到平整且光亮的钴沉淀。X射线衍射分析表明,在钴电沉淀过程中,(100)面是晶体生长的择优生长面。扫描电镜结果表明,当四乙基溴化铵的浓度为10 mg/L时,可获得平整均匀的钴沉淀,而浓度超过10 mg/L时,沉淀质量恶化。循环伏安法研究表明,在电解槽中加入四乙基溴化铵时,阴极产生极化且阴极电流大大降低。XPS结果证实电沉积可获得高纯钴,且FTIR谱证明沉淀中没有与四乙基溴化铵结合的成分。Pinak PATNAIK Subrat Kumar PADHY Bankim Chandra TRIPATHY Indra Narayan BHATTACHARYA Raja Kishore PARAMGURU 2015Transactions of Nonferrous Metals Society of China2015,25,6:3
8Revealing Genetic Relationship and Prospecting of Novel Donors Among Upland Rice Genotypes Using qDTY-Linked SSR Markers显示文摘A total of 17 simple sequence repeat(SSR) markers linked to QTLs(qDTYs) governing grain yield under reproductive stage(RS) drought stress were used to assess the genetic relationship and prospecting new donors for q DTYs among 32 popular upland rice genotypes. These SSR markers generated a total of 36 alleles with an average allele count of 2.1 per locus. Polymorphic information content value of the markers ranged from 0.376 to 0.662 with an average value of 0.484. The expected heterozyogosity ranged from 0.381 to 0.632. STRUCTURE analysis divided the 32 genotypes into three sub-populations. Subsequent phenotyping revealed that all the tolerant genotypes were grouped into one sub-population, whereas the moderately tolerant and susceptible genotypes were grouped into separate sub-populations. Phylogenetic tree constructed by the unweighted neighbour-joining method also divided the genotypes into three clusters. The grouping pattern of genotypes into the clusters was similar to that into the STRUCTURE analysis, on the basis of drought tolerance level. The average value of genetic dissimilarity coefficient among the genotypes was observed to be 0.486. Furthermore, by combining genotyping data with phenotyping data, 16 new donors for 6 qDTYs were identified.Mitadru MUKHERJEE Barada PADHY Bharathkumar SRINIVASAN Pradosh MAHADANI Sk Yasin BAKSH Ravindra DONDE Onkar Nath SINGH Lambodar BEHERA Padmini SWAIN Sushanta Kumar DASH 2018Rice science2018,25,6:2
9Chlorination roasting-coupled water leaching process for potash recovery from waste mica scrap using dry marble sludge powder and sodium chloride显示文摘The present paper reports the effective utilization of marble sludge powder(MSP)for the recovery of potash values from waste mica scrap using chlorination roasting-water leaching method.Characterization studies indicated the presence of dolomite as the major mineral phase in MSP,whereas muscovite and quartz were observed in the mica sample.The acid leaching studies suggest a maximum of 22%potash recovery under conditions:4 M H2SO4 acid,particle size of^100μm,stirring speed of 600 r/min,leaching temperature of 75℃,and leaching time of 90 min.The chlorination roasting-water leaching process was adopted to achieve the lowest level of 80%-90%potash recovery.The optimum conditions for the recovery of^93%potash from mica(~8.6wt%K2O)requires 900℃ roasting temperature,30 min roasting time,and 1:1:0.75 mass ratio of mica:MSP:NaCl.The roasting temperature and amount of NaCl are found to be the most important factors for the recovery process.The reaction mechanism suggests the formation of different mineral phases,including sylvite(KCl),wollastonite,kyanite,and enstatite,during roasting,which were confirmed by X-ray diffraction(XRD)analyses and scanning electron microscopy(SEM)morphologies.The MSP-blended NaCl additive is more effective for potash recovery compared with the other reported commercial roasting additives.Sandeep Kumar Jena Jogeshwar Sahu Geetikamayee Padhy Swagatika Mohanty Ajit Dash 2020International Journal of Minerals,Metallurgy and Materials2020,27,9:2
10Characterisation of heterotrophic nitrifying and aerobic denitrifying Klebsiella pneumoniae CF-S9 strain for bioremediation of wastewater显示文摘Soumesh Kumar Padhi Swetaleena Tripathy Rinil Sen Abhijit Sinha Mahapatra Sriprakash Mohanty Nikhil Kumar Maiti 2013International Biodeterioration & Biodegradation2013,,:2
11氯化钠焙烧-硫酸浸出从白云母矿中提取钾显示文摘本研究旨在采用氯化钠焙烧与-硫酸浸取结合的浸出工艺,从含约10 wt%氧化钾的白云母中提取钾。当仅用硫酸浸出从白云母矿中提取钾时,钾的提取率为8%~18%。获得最大提取率的最佳浸出条件为4 mol/L硫酸,浸出时间为60 min,液固比为4 m L/g。然而,先添加氯化钠焙烧(白云母矿与氯化钠的质量比为1:1,焙烧为900℃,焙烧时间为45 min),然后再用硫酸浸出(浸出温度为95℃,浸出时间为60 min),钾提取率达到98%。在类似的焙烧条件下,仅用硫酸浸出从白云母矿中提取钾,钾提取率仅为60%。分析了温度、时间、氯化钠浓度、硫酸浓度、液固比等焙烧和浸出参数对钾提取的影响。与氯化钠焙烧后白云母中出现的氯化钾物相在硫酸浸出后的残留物中消失,证实了白云母矿石晶体结构的物理和化学变化。依据现有文献,结合X射线衍射和带有能量色散X射线光谱的扫描电子显微镜表征结果,阐明了白云母矿结构中释放钾的可能机制。Sandeep Kumar JENA Baijayantimala MOHANTY Geetikamayee PADHY Jogeshwara SAHU Sapan Kumar KANDI 2022Journal of Central South University2022,29,6:2
12行为疗法治疗一例罕见的窒息恐惧症:病例报告及文献复习(英文)显示文摘概述:窒息恐怖症是一种较少见的恐怖症,是心理性吞咽困难的病因之一。患者往往在耳鼻喉科就诊,之后被转诊到精神科。如果诊断不及时、治疗不恰当,那么它会严重影响患者的身心健康。我们报告一个20岁的女性患者,表现为窒息恐怖症,接受行为治疗。此外,我们还讨论了这种罕见的焦虑障碍的鉴别诊断和治疗策略。Sahoo S Hazari N Padhy SK 2016上海精神医学2016,28,6:2
13An ant colony system approach for unit commitment problem显示文摘Simon S P Padhy N P Anand R S 2006Electrical Power and Energy System2006,,28:1
14Effect of structure on the Fe^3+/Fe^2+ redox couple in iron phosphates显示文摘Padhi A K Nanjundawamy K S Goodenough J B 1997J Electrochem Soc1997,144,5:1
15Phospho-olivines as positive electrode materials for rechargeable lithium batteries显示文摘PADHI A K NANJJUNDASWAMY K S GOODENOUGH J B 1997J Electrochem Soc1997,144,4:1
16Phospho-olivines as positive-electrode materials for rechargeable lithium batteries显示文摘PADHI A K NANJUNDASWAMY K S GOODENOUGH G B 1997Journal of the Electrochemical Society1997,144,4:1
17Phospho-olivines as positive-electrode materials for rechar- geable lithium batteries 显示文摘Padhi A K Nanjundaswamy K S Goodenough J B 1997Journal of the Electrochemical Society1997,144,:1
18The impact of a rectangular or trapezoidal flexion gap on the femoral component rotation in TKA 显示文摘Lee DH Padhy D Park JH 2011Knee Surg Sports Traumatol Arthrosc2011,19,7:1
19Extragastrointestinal stromal tumor arising in the pancreas:a case report with a review of the literature显示文摘Padhi S Kongara R Uppin SG 2010JOP2010,11,3:1
20Phospho-olivines as positive-electrodematerialsforrechargeablelithiumbateries显示文摘Padhi A K Nanjundaswamy K S Goodenough J B 0,,04:1
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