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Analysis and Optimization of Operational and Pollutant Attributes of Diesel Engine with CNT-Infused Orange Peel Biodiesel-Diesel Blend Fuel

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Journal of Thermal Science 2024年第2期33卷 761-778页

作者： ranjeet rAI r.r.SAHOO Mechanical Engineering Department GLA UniversityMathura281406India Mechanical Engineering Department IIT(BHU)Varanasi221005India

The current study is performed to find sustainable solutions for the future of transportation and environmental *** conventional methods and experimental design table(L16 Orthogonal Arr.y)techniques have been employed to examine and optimize a diesel-powered engine's operational and pollutant *** L16 Orthogonal Arr.y is obtained through Taguchi's experimental design approach using Minitab 16 *** experimental design incorporated three control variables,namely engine speed,fuel type,and engine load,each with four *** operational parameters,namely brake thermal efficiency(BTE)and brake specific fuel consumption(BSFC),as well as the emission characteristics,including hydrocarbon(HC),carbon monoxide(CO),nitrogen oxide(NO),and smoke emissions,were acquired using the L16 orthogonal arr.y(OA) and subsequently *** utilization of methodologies such as signal-to-noise(S/N) ratio and gr.y analysis was employed to determine the optimal operational state of the engine to achieve maximum performance while minimizing *** engine's ideal state of operation,in terms of BTE and BSFC,was determined to be at 75% engine load,1000 r/min engine speed,and using 10^(-4)(in vol) carbon nanotube incorporated 20% orange peel biodiesel(OPB20CNT100) blended fuel(A3-B1-C4).The study indicated that engine load significantly influenced BTE and BSFC,with 84.05% and 87.79% contribution factors,*** 25% engine load,1000 r/min,and OPB20CNT100 fuel(A1-B1-C4) CO,smoke,NO,and HC emissions were the *** load affects emissions the *** BSFC increased 3.10% and NO emissions 1.77%.BTE,CO,smoke,and HC emissions decreased by 1.9%,12.29%,47.05%,and 47.22%,respectively,at optimal operating conditions concerning diesel *** study shows that Taguchi-Gr.y's experimental design optimizes diesel engine operational and pollutant *** outcomes revealed that orange peel biodiesel infused with CNT can replace diesel fuel in a

关键词： Taguchi-Gr.y method OPB20CNT100 transesterification S/N ratio GrG HC CO and NO

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Comprehensive analysis of uncertainty quantification for the^(58)Ni(n,p)^(58)Co reaction cross section

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Chinese Physics C 2024年第9期48卷 170-175页

作者： Mahesh Choudhary Aman Sharma Namrata Singh Mahima Upadhyay Punit Dubey A.Gandhi Akash Hingu G Mishra Sukanya De L.S.Danu Ajay Kumar r.G.Thomas Saurav Sood Sajin Prasad S.Mukherjee I.N.ruskov yu.N.Kopatch A.Kumar Department of Physics Banaras Hindu UniversityVaranasi 221005India Horia Hulubei National Institute of Physics and Nuclear Engineering-IFIN-HH Bucharest 077125Romania Department of Physics The Maharaja Sayajirao University of BarodaVadodara 390002India Nuclear Physics Division Bhabha Atomic Research CentreMumbai 400085India Health Physics Division Bhabha Atomic Research CentreMumbai 400085India Department of Electrical Power Engineering Brno University of TechnologyBrno 61600Czech Republic Institute for Nuclear research and Nuclear Ener.y Bulgarian Academy of SciencesSofia 1784Bulgaria Joint Institute for Nuclear research(JINr) Dubna 141980Russia

In this study,we measured the^(58)Ni(n,p)^(58)Co reaction cross section with neutron energies of 1.06,1.86,and 2.85 *** cross section was measured using neutron activation techniques andγ-r.y spectroscopy,and it was compared with cross section data available in the ***,we calculated the covariance matrix of the measured cross section for the aforementioned nuclear *** uncertainties of the theoretical calculation for^(58)Ni(n,p)^(58)Co reaction cross section were calculated via Monte Carlo *** this study,we used uncertainties in the optical model and level density parameters to calculate uncertainties in the theoretical cross *** theoretical calculations were performed by using *** this study,we aim to analyze the effect of uncertainties of the nuclear model input as well as different experimental variables used to obtain the values of reaction cross section.

关键词： ^(58)Ni(n p)^(58)Co reaction γ-r.y spectroscopy uncertainty quantification of cross section covariance analysis

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Graph Convolutional Network Based Fault Detection and Identification for Low-voltage DC Microgrid

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Journal of Modern Power Systems and Clean Ener.y 2023年第3期11卷 917-926页

作者： Ambuj Pandey Soumya r.Mohanty Department of Electrical Engineering Indian Institute of Technology(BHU)VaranasiUttar PradeshIndia IEEE

This paper presents a novel fault detection and identification method for low-voltage direct current(DC)microgrid with meshed *** proposed method is based on graph convolutional network(GCN),which utilizes the explicit spatial information and measurement data of the network topology to identify a *** has a more substantial feature extraction ability even in the presence of noise and bad *** adjacency matrix for GCN is developed by considering the network topology as an inherent *** bus voltage and line current samples after faults are regarded as the node ***,the DC microgrid model is developed using PSCAD/EMTDC simulation,and fault simulation is carried out by considering different possible events that include environmental and physical *** performance of the proposed method under different conditions is compared with those of different machine learning techniques such as convolutional neural network(CNN),support vector machine(SVM),and fully connected network(FCN).The results reveal that the proposed method is more effective than others at detecting and classifying *** method also possesses better robustness under the presence of noise and bad data.

关键词： DC microgrid graph convolution network fault detection topological information

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Dielectric relaxation and magneto-electric characteristics of lead-free double perovskite: Sm2NiMnO6

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Journal of Advanced Ceramics 2019年第2期8卷 174-185页

作者： rutuparna DAS r.N.P.CHOUDHAry Department of Physics Siksha ‘O’ Anusandhan University

The polycrystalline sample of a double perovskite, Sm2NiMnO6 was synthesized by a solid-state reaction route. From the X-r.y structural study, it is found that the structure of the material is monoclinic with lattice parameters: a = 4.1750(63) ?, b = 7.6113(63) ?, c = 5.9896(63) ?, and β = 112.70°. These parameters are very close to and consistent with those of such type of materials. The dielectric, impedance, AC conductivity, and electrical modulus properties of the sample were studied in the temperature range of 25–300℃ and the frequency range of 1 kHz–1 MHz. Typical relaxor behavior observed in the dielectric studies was confirmed by Vogel–Fulcher fitting. From the Nyquist plots, the temperature dependent contribution of grain and grain boundary effect was confirmed. The non-Debye type of relaxation was found using the complex impedance spectroscopy. The magnetic study revealed that the sample had paramagnetic behavior at room temperature. Magneto-electric(ME) coefficient was obtained by changing DC bias magnetic field. This type of lead-free relaxor ferroelectric compound may be useful for high-temperature applications.

关键词： solid-state reaction X-r.y diffraction(XrD) dielectric relaxation magneto-electric(ME) coupling

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Behavior of an indigenously fabricated transferred arc plasma furnace for smelting studies

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Plasma Science and Technology 2018年第3期20卷 136-145页

作者： A K MANDAL r K DISHWAr O P SINHA Department of Metallurgical Engineering IIT(BHU)

The utilization of industrial solid waste for metal recovery requires high-temperature tools due to the presence of silica and alumina, which is reducible at high temperature. In a plasma arc furnace, transferred arc plasma furnace（TAP） can meet all requirements, but the disadvantage of this technology is the high cost. For performing experiments in the laboratory, the TAP was fabricated indigenously in a laboratory based on the different inputs provided in the literature for the furnace design and fabrication. The observed parameters such as arc length, ener.y consumption, graphite electrode consumption, noise level as well as lining erosion were characterized for this fabricated furnace. The nitrogen plasma increased by around 200 K（200 ℃） melt temperature and noise levels decreased by ~10 d B compared to a normal *** plasma offered 100 K（100 ℃） higher melt temperature with ~5 d B higher sound level than nitrogen plasma. Nitrogen plasma arc melting showed lower electrode and ener.y consumption than normal arc melting, whereas hydrogen plasma showed lower ener.y consumption and higher electrode consumption in comparison to nitrogen plasma. The higher plasma arc temperature resulted in a shorter meltdown time than normal arc with smoother arcing. Hydrogen plasma permitted more heats, reduced meltdown time, and lower ener.y consumption, but with increased graphite consumption and crucible wear. The present study showed that the fabricated arc plasma is better than the normal arc furnace with respect to temperature generation, ener.y consumption, and environmental friendliness. Therefore, it could be used effectively for smelting-reduction studies.

关键词： smelting transferred arc plasma furnace characterization hydrogen and nitrogen plasma hollow electrode graphite and magnesite lining

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Advances in the Structural Composition of Biomass:Fundamental and Bioener.y Applications

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Journal of renewable Materials 2021年第4期9卷 615-636页

作者： Neha Srivastava Akshay Shrivastav rajeev Singh Mohammed Abohashrh K.r.Srivastava Safia Irfan Manish Srivastava P.K.Mishra Vijai Kumar Gupta Vijay Kumar Thakur Department of Chemical Engineering and Technology Indian Institute of Technology(BHU)Varanasi221005India Department of Chemical Engineering Madan Mohan Malaviya University of TechnologyGorakhpur273010India Department of Environmental Studies Satyawati CollegeUniversity of DelhiDelhi110052India Department of Basic Medical Sciences College of Applied Medical SciencesKing Khalid UniversityAbhaSaudi Arabia Departentof Biotechnology Faculty of BiosciencesIntegral UniversityLucknow226026India Biorefining and Advanced Materials research Center Scotland’s Rural College(SRUC)EdinburghEH93JGUK

Increased environmental pollution due to the organic wastes over the world is one of the most burning *** organic wastes lie under the category of biodegradable waste and can be effectively degraded from their complex compound into simple one by the action of microbes or other living ***,lignocellulosic biomass is a major part of the biodegradable waste and belongs to the group of renewable ener.y source,which can be very effective for bioener.y *** are made up of different compounds such as cellulose,hemicelluloses,lignin and *** from these components,based on the structural analysis biomass also consist of bioactive substances such as carotenoids,flavonoids,lignin and *** review explores a complete overview of the classification,component and the structure of the ***,it discusses how biomasses can play the key role of substrate in many sectors such as industrial bioener.y production including gaseous and liquid biofuels.

关键词： Biomass classification composition bioactive substance biofuels

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Demographic and Sexual Behavior Characteristics of Men Who Have Sex with Men (MSM) registered in a Targeted Intervention (TI) Program in India

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World Journal of AIDS 2015年第3期5卷 256-264页

作者： Harshal r. Salve Sanjay K. rai Shashi Kant yujjwal raj D. Chandrasekhar reddy Centre for Community Medicine All India Institute of Medical Sciences New Delhi India Ex-NPO National AIDS Control Organiation Government of India New Delhi India Ex-Professor IMS bhu and Ex-NPO WHO Country Office New Delhi India

Background: Men who have sex with men (MSM) contribute substantially to HIV prevalence in India. The targeted intervention (TI) program is the most important link between MSM and the public health system. Hence, we studied the demographic and sexual behavior characteristics of MSM registered in TI program in India. Methods: We used information maintained at TI sites under the program catering exclusively to MSM in India. Demographic characteristics and sexual behavior of MSM over the past two decades were also studied. risk behaviors included type of partners, alcohol use, sexual acts per week, years of sex work and age at initiation of sex work. Bivariate analysis was carried out to understand the demographic determinants of sexual behavior. results: In total, data of 6037 MSMs from 14 TI sites were analyzed. Of these 4655 (73.8%) were young adults (years) and 2565 (40.8%) had completed their matriculation. More than half (55.4%) were married. Double-decker was identified as the most common sub-typology among MSM. Average age of initiation of sex was 23.0 years and average number of sexual acts per week was 6.8 (95% CI: 6.8 - 7.0). Irregular partners and alcohol use were observed in 30.5% and 52.8% of MSM respectively. Cohort analysis revealed a statistically significant declining trend in average age of initiation of sex over the past two decades. The sexual behavior of MSM varied significantly by employment status, education, marital status, state of residence, alcohol use and type of sex partner. Conclusion: MSMs registered with the TI program in India were mostly young, educated, and employed. Many MSM also had a history of heterosexual relationships, and thus had the potential of transmitting HIV infection to the otherwise low risk general population. This analysis supports the use of TI program data for understanding the demographic and sexual behavior characteristics of hard to reach and stigmatized population in society.

关键词： Men Who Have Sex with Men Demographic Profile Sexual Behavior India

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沃尔什函数的一种新定义及其复制本质

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通信学报 2004年第2期25卷 144-148页

作者：张其善张凤元吴今培北京航空航天大学电子工程学院北京100083 五邑大学电子工程系广东江门529020

利用有限Abel群的特征标理论,给出了沃尔什函数的一种新的定义方法,并阐述了沃尔什函数的正交特性和沃尔什函数的编号问题及其复制本质。

关键词： Abel群特征标沃尔什函数复制

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一类非线性人口系统的稳定性和振荡

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系统科学与数学 1988年第4期 324-332页

作者：郭宝珠袁建华张升海北京信息与控制研究所陕西财经学院西安

周期现象和振荡是非保守系统中存在着的极为普遍的现象,*** 和 *** & *** 就几种描述生态演化的非线性动力模型讨论了系统周期解的存在性.由于周期解是系统的一种特殊的平衡态,对这种现象的研究无论从理论上还是实践上都有明显的意义,... 详细信息

周期现象和振荡是非保守系统中存在着的极为普遍的现象,*** 和 *** & *** 就几种描述生态演化的非线性动力模型讨论了系统周期解的存在性.由于周期解是系统的一种特殊的平衡态,对这种现象的研究无论从理论上还是实践上都有明显的意义,本文的目的就是在研究一类非线性人口发展方程稳定性的

关键词：人口系统增函数人口发展方程周期解单调函数

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Microstructure,mechanical and wear properties of aluminum borate whisker reinforced aluminum matrix composites

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Transactions of Nonferrous Metals Society of China 2020年第7期30卷 1731-1742页

作者： Neeraj PANDEy ICHAKrABAr.y Kalpana BArKANE NSMEHTA MrMAJHI Department of Ceramic Engineering Indian Institute of Technology(BHU)VaranasiU.P.India Department of Metallurgical Engineering Indian Institute of Technology(BHU)VaranasiU.P.India

The microstructural features and the consequent mechanical properties were characterized in aluminium borate whisker(ABOw)(5, 10 and 15 wt.%) reinforced commercially-pure aluminium composites fabricated by conventional powder metallur.y technique. The aluminium powder and the whisker were effectively blended by a semi-powder metallur.y method. The blended powder mixtures were cold compacted and sintered at 600 ℃. The sintered composites were characterized for microstructural features by optical microscopy(OM), scanning electron microscopy(SEM), ener.y dispersive spectroscopy(EDS), transmission electron microscopy(TEM) and X-r.y diffraction(XrD) analysis. Porosity in the composites with variation in ABOw contents was determined. The effect of variation in content of ABOw on mechanical properties, viz. hardness, bending strength and compressive strength of the composites was evaluated. The dry sliding wear behaviour was evaluated at varying sliding distance at constant loads. Maximum flexural strength of 172 MPa and compressive strength of 324 MPa with improved hardness around HV 40.2 are obtained in composite with 10 wt.% ABOw. Further increase in ABOw content deteriorates the properties. A substantial increase in wear resistance is also observed with 10 wt.% ABOw. The excellent combination of mechanical properties of Al-10 wt.%ABOw composites is attributed to good interfacial bonds, less porosity and uniformity in the microstructure.

关键词： aluminum matrix composite powder metallur.y aluminum borate whisker(ABOw)reinforcement flexural strength compression test dry sliding wear

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