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Frontiers of Environmental Science & Engineering 2018年第4期12卷 119-129页

作者： Mothe gopi Kiran Kannan Pakshirajan gopal Das Centre for the Environment Indian Institute of Technology Guwahati Guwahati 781039 Assam India Department of Biosciences and Bioengineering Indian Institute of Technology Guwahati Guwahati 781039 Assam India Department of Chemistry Indian Institute of Technology Guwahati Guwahati 781039 Assam India

This study was aimed at investigating the performance of anaerobic rotating biological cont- reactor treating synthetic wastewater containing a mixture of heavy metals under sulfate redu condition. Statistically valid factorial design of experiments was carried out to understand dynamics of metal removal using this bioreactor system. Copper removal was maximum （〉98% followed by other heavy metals at their respective low inlet concentrations. Metal loading rates than 3.7 mg/L· h in case of Cu（II）; less than 1.69 mg/L· h for Ni（II）, Pb（II）, Zn（II）, Fe（III） and C are favorable to the performance of the An-RBC reactor. Removal efficiency of the heavy metals 1 mixture depended on the metal species and their inlet loading concentrations. Analysis of n precipitates formed in the sulfidogenic bioreactor by field emission scanning electron microscopyalong with energy dispersive X-ray spectroscopy （FESEM-EDX） confirmed metal sulfide precipitationby SRB. All these results clearly revealed that the attached growth biofilm bioreactor is well suited for heavy metal removal from complex mixture.

关键词： Factorial design analysis Sulfate reducing bacteria Multi-metal solution Heavy metal removal Anaerobic rotating biological contactorreactor High metal loading

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加快大型数据中心服务的可重构结构

中国集成电路 2015年第1期24卷 55-68,89页

作者： Andrew Putnam Adrian M.Caulfield Eric S.Chung Derek Chiou Kypros Constantinide John Demme Hadi Esmaeilzadeh Jeremy Fowers gopi prashanth gopal Jan Gray Michael Haselman Scott Hauck Stephen Heil Amir Hormati Joo-Young Kim Sitaram Lanka James Larus Eric Peterson Simon Pope Aaron Smith Jason Thong Phillip Yi Xiao Doug Burger 微软公司

数据中心的工作负载要求高计算能力、灵活性、能效和低成本。同时改善所有这些因素非常具有挑战性。为了推进数据中心超出商用服务器设计可以提供的能力,我们设计并构建了一个可组合、可重构的结构,来加速部分大型软件服务。结构的每个... 详细信息

数据中心的工作负载要求高计算能力、灵活性、能效和低成本。同时改善所有这些因素非常具有挑战性。为了推进数据中心超出商用服务器设计可以提供的能力,我们设计并构建了一个可组合、可重构的结构,来加速部分大型软件服务。结构的每个实例都由嵌入48台机器的半机架6×8二维环面高端Stratix V FPGA组成。每台服务器中都放置了一个FPGA,可以通过PCIe来访问,并用成对的10 Gb SAS电缆直接连接到其他FPGA。在本文中,我们描述了这种结构在1,632台服务器组(bed)的中等规模的部署,并测量了其在加快Bing搜索引擎方面的功效。我们描述了系统的要求和架构,详细介绍了关键技术挑战,以及使系统在出现故障情况下保持鲁棒性所需的解决方案,还有根据排名候选文档测量的系统性能、功率和弹性。在高负载时,一定范围内的可重构结构提高了每台服务器固定延迟分布的吞吐量排名95%——或在保持等效吞吐量时,减少29%的尾延迟。

关键词：可重构结构服务器组数据中心 Stratix FPGA 计算能力工作负载软件服务

Development of Energy Management System for Micro Grid Operation

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Computer Systems Science & Engineering 2023年第6期45卷 2537-2551页

作者： S.Jayaprakash B.gopi Murugananth gopal Raj S.Sujith S.Deepa S.Swapna School of Electrical and Electronics Engineering Sathyabama Institute of Science and TechnologyChennaiTamil NaduIndia Department of Electronics and Communication Engineering Muthayammal Engineering College(Autonomous)RasipuramTamil NaduIndia Department of Electrical and Electronics Engineering Ahalia School of Engineering and TechnologyKozhiparaPalakkadKeralaIndia Department of Electrical and Electronics Engineering NSS College of EngineeringPalakkadKeralaIndia Department of Electrical and Electronics Engineering Panimalar Engineering CollegeChennaiTamil NaduIndia Department of Electrical and Electronics Engineering GRT Institute of Engineering and TechnologyTiruttaniThiruvallurTamil NaduIndia

The introduction of several small and large-scale industries,malls,shopping complexes,and domestic applications has significantly increased energy *** aim of the work is to simulate a technically viable and economically optimum hybrid power system for residential *** proposed micro-grid model includes four power generators:solar power,wind power,Electricity Board(EB)source,and a Diesel Generator(DG)set,with solar and wind power performing as major sources and the EB supply and DG set serving as backup *** core issue in direct current to alternate current conversion is harmonics distortion,a five-stage multilevel inverter is employed with the assistance of an intelligent control system is simulated and the optimum system configuration is estimated to reduce harmonics and improve the power *** monthly demand for residential buildings is 13-15 ***,almost 433 Kilo-Watts(KW)of electricity is required every day,and if it is used for 8 h per day,50-60 KW of electricity is needed per *** overall micro-grid model’s operation and performance are established using MATLAB/SIMULINK software,and simulation results are *** simulation results show that the developed system is both cost-effective and environment friendly resulting in yearly cost reductions.

关键词： Microgrid energy management system intelligent control system multilevel inverter power plants

Temperature Dependence of Density and Thermal Expansion of Wrought Aluminum Alloys 7041, 7075 and 7095 by Gamma Ray Attenuation Method

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Journal of Modern Physics 2013年第3期4卷 331-336页

作者： Kethireddy Narender Ammiraju Sowbhagya Madhusudhan Rao Kalvala gopal Kishan Rao Nallacheruvu gopi Krishna CIC Kakatiya University Warangal India Department of Physics Kakatiya University Warangal India Varadha Reddy College of Engineering Warangal India

The gamma quanta attenuation studies have been carried out to determine mass attenuation coefficients of 7041, 7075 and 7095 wrought aluminum alloys. The temperature dependence of linear attenuation coefficient, density and thermal expansion of these wrought aluminum alloys in the temperature range 300 K - 850 K have been reported. The measurements were done by using a gamma ray densitometer designed and fabricated in our laboratory. The data on variation of density and linear thermal expansion with temperature have been represented by linear equations. Volume thermal expansion coefficients have been reported.

关键词： Density Thermal Expansion Linear Attenuation Coefficient Mass Attenuation Coefficient

Thermophysical Properties of NaCl, NaBr and NaF by <i>γ</i>-Ray Attenuation Technique

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Journal of Modern Physics 2013年第2期4卷 208-214页

作者： Ammiraju Sowbhagya Madhusudhan Rao Kethireddy Narender Kalvala gopal Kishan Rao Nallacheruvu gopi Krishna Central Instrumentation Centere (CIC) Kakatiya University Warangal India Department of Physics Kakatiya University Warangal India

The γ-ray densitometer has been designed and fabricated in our laboratory and carried out studies on temperature dependent γ-ray attenuation and thermo physical properties of NaCl, NaBr and NaF. The linear attenuation coefficients (μl) for the pellets of NaCl, NaBr and NaF as a function of temperature have been determined. The coefficients of temperature dependence of density have been reported. The variation of density and thermal expansion of NaCl, NaBr and NaF in the temperature range of 300 K - 1000 K have been studied and compared with results available in the literature. The temperature dependence of density and thermal expansion has been represented by linear equations. Volume thermal expansion coefficients have been reported.

关键词： Linear Attenuation Coefficient Density Thermal Expansion γ-Ray Densitometer