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Journal of Rock Mechanics and Geotechnical Engineering 2019年第1期11卷 202-207页

作者： Hemant Agrawal a.k.mishra Department of Mining Engineering Indian Institute of Technology (Indian School of Mines)

The blast-induced ground vibration prediction using scaled distance regression analysis is one of the most popular methods employed by engineers for many decades. It uses the maximum charge per delay and distance of monitoring as the major factors for predicting the peak particle velocity(PPV). It is established that the PPV is caused by the maximum charge per delay which varies with the distance of monitoring and site geology. While conducting a production blasting, the waves induced by blasting of different holes interfere destructively with each other, which may result in higher PPV than the predicted value with scaled distance regression analysis. This phenomenon of interference/superimposition of waves is not considered while using scaled distance regression analysis. In this paper, an attempt has been made to compare the predicted values of blast-induced ground vibration using multi-hole trial blasting with single-hole blasting in an opencast coal mine under the same geological condition. Further,the modified prediction equation for the multi-hole trial blasting was obtained using single-hole regression analysis. The error between predicted and actual values of multi-hole blast-induced ground vibration was found to be reduced by 8.5%.

关键词： Peak particle velocity(PPV) Blast-induced ground vibration Scaled distance regression analysis Wave superimposition Single-hole blasting

Antimicrobial activities of isoalantolactone, a major sesquiterpene lactone of Inula racemosa

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Chinese Science Bulletin 2001年第6期46卷 498-501页

作者： a.k.mishra Institute of Functional Biomolecule State Key Laboratory of Pharma-ceutical Biotechnology School of Life Science Nanjing University Nanjing China

Isoalantolactone, a major constituent of Inula racemosa (Compositae) was tested for its antimicrobial action against five bacteria, six human and six plant pathogenic fungi. The lactone showed absolute toxicities at 500 μg/mL against 3 soil borne phytopathogenic fungi (Gaeu-mannomyces graminis var. tritici, Rhizoctonia cerealis and Phytophthora capsici) with the MICs determined to be 100, 100 and 300 μg/mL, respectively. At the MICs, isoalantolac-tone exhibited its *** nature of toxicity. The lowest fungicidal concentrations of the lactone to G. graminis var. tritici, R. cerealis and P. capsici were shown to be 150, 150 and 350 μg/mL, respectively. Moreover, isoalantolactonc displayed weaker antibacterial activities against Bacillus subtilis, Escherichia coli, Pseudomonas fluorecense, Sarcina lentus and Staphylococcus aureus with MICs of 125, 425, 150, 150 and 100 μg/mL, respectively. The investigation disclosed the strong inhibition of isoalantolactonc to the phytopatho-gcnic fungi,

关键词： isoalantolactone Inula racemosa antimicrobial.

MHD effect of mixed convection boundary-layer flow of Powell-Eyring fluid past nonlinear stretching surface

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Applied Mathematics and Mechanics(English Edition) 2014年第12期35卷 1525-1540页

作者： S.PANIGRAHI M.REZA a.k.mishra Department of Mathematics National Institute of Science & TechnologyBerhampur 761008 India Department of Mathematics Berhampur UniversityBerhampur 760007 India

Sufficient conditions are found for the existence of similar solutions of the mixed convection flow of a Powell-Eyring fluid over a nonlinear stretching permeable sur- face in the presence of magnetic field. To achieve this, one parameter linear group trans- formation is applied. The governing momentum and energy equations are transformed to nonlinear ordinary differential equations by use of a similarity transformation. These equations are solved by the homotopy analysis method （HAM） to obtain the approximate solutions. The effects of magnetic field, suction, and buoyancy on the Powell-Eyring fluid flow with heat transfer inside the boundary layer are analyzed. The effects of the non- Newtonian fluid （Powell-Eyring model） parameters ε and δon the skin friction and local heat transfer coefficients for the cases of aiding and opposite flows are investigated and discussed. It is observed that the momentum boundary layer thickness increases and the thermal boundary layer thickness decreases with the increase in ε whereas the momentum boundary layer thickness decreases and thermal boundary layer thickness increases with the increase in δ for both the aiding and opposing mixed convection flows.

关键词： stretching surface non-Newtonian fluid mixed convection

Thermally stimulated properties in ZnSe：Tb and ZnSe：(Mn, Tb) phosphors

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Journal of Semiconductors 2018年第2期39卷 13-16页

作者： a.k.mishra S.k.mishra S.P.Pandey kshama Lakshmi mishra SHEAT College of Engineerig Varansi (U.P.) India Army Public School kunraghat Gorakhpur (U.P.) India Department of Physics MM University Ambala Haryana India Shree Thakurdwara Balika Vidyalaya Ghaziabad (U.P.) India

Thermoluminescence studies were performed of ZnSe：Tb and ZnSe：（Mn, Tb） phosphors. A method of preparation for ZnSe phosphors doped with Tb and（Mn, Tb） has been discussed. The thermoluminescence（TL）properties of these phosphors have been studied from 100 to 370 k temperature after exciting by UV radiation（365 nm）at three uniform heating rates 0.4, 0.6 and 0.9 k/s. The trapping parameters like trap depth, lifetime of electrons and capture cross-section have also been determined using various methods.

关键词： thermoluminescence electroluminescence capture cross-section ionizing radiation phosphors Curie's method

Enhanced visible-light photocatalytic activity of multi-elements-doped ZrO_2 for degradation of indigo carmine

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Journal of Rare Earths 2015年第5期33卷 498-506页

作者： E.S.Agorku A.T.kuvarega B.B.Mamba A.C.Pandey a.k.mishra Department of Applied Chemistry University of Johannesburg University of South Africa College of Engineering Science and Technology Nanotechnology & Water Sustainability Research Unit Florida Campus Nanotechnology and Application Centre University of Allahabad

In this study, C,N,S-doped ZrO2 and a series of Eu doped C,N,S-ZrO2 photocatalysts were synthesized by a coprecipitation method using thiourea as the source of C, N and S and Eu（NO3）·6H2O as source of Eu. The materials were characterized by X-ray dif-fraction （XRD）, Raman spectroscopy, Fourier transform infrared spectroscopy （FTIR）, UV-visible diffuse reflectance spectroscopy, scanning electron microscopy （SEM）/energy dispersive X-ray spectroscopy （EDX）, and transmission electron microscopy （TEM）. Indigo carmine （IC） was chosen as a model for organic pollutants and used to evaluate the photocatalytic performance of the photo-catalysts under simulated solar light. Commercial ZrO2 was used as a reference material. XRD and Raman results indicated the for-mation of both tetragonal and monoclinic phase ZrO2 with particle size ranging from 8–30 nm. Multi-element doping had a great in-fluence on the optical responses manifested as red shift in the absorption edge. The highest photocatalytic activity towards IC was observed for the Eu,C,N,S-doped ZrO2 （0.6 mol.%Eu） sample （k=1.09×10–2 min–1）. The commercial ZrO2 showed the lowest photo-degradation activity （k=5.83×10–4 min–1）. The results showed that the control of Eu doping in the C,N,S-ZrO2 was very important in reducing electron-hole recombination. The synergistic effect of Eu, C, N, and S in the ZrO2 matrix led to enhanced utilization of simulated solar energy for the degradation of IC through narrowing of bandgaps.

关键词： photocatalysis indigo carmine multi-elements-doped ZrO2 rare earths

Design of Blast Using High Resolution Camera

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Design of Blast Using High Resolution Camera

The Seventh International Symposium on Rock Fragmentation by Blasting

作者： a.k.mishra R.N.Gupta Indian School of Mines Dhanbad National Institute of Rock Mechanics kGF India

The mining industry is leading towards a technology driven optimisation process. It has been realised that the unit operations such as drilling, blasting, excavation, loading, hauling and crushing are inter related variables in the total cost equations. Development, improvement and utilisation of innovative technologies are important for cost effectiveness of mineral industries. This paper explores the potential to exploit controls over the outputs of the primary blasting operation arising from developments in blast monitoring instruments and explosives technology. Blast design in Indian mines uses the method of trial and error to a large extent. As there cannot be a unique blast design that would serve the varied situations prevailing in mines, site specific and customised blast designs are required to accommodate the different blast environments encountered in the field with different geo-mining conditions. In this paper a new methodology has been proposed to design the blast in opencast coal mines. Blast monitoring studies have been conducted at three open pit coal mine in India. The mines are situated in Jharia and Singrauli Coalfield. The study has been conducted using high-resolution S-VHS video camera, velocity of detonation (VOD) recorder and seismographs.

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连续式电渗析法外理碱性黑液

国外纺织技术（化纤．染整．环境保护分册） 1989年第6期 42-45页

作者： a.k.mishra P.k.Bhattacharya 陈献明

前言关于电渗析法处理黑液的浓差极化及流体的动力学性质的资料很少。早期工作研究了在间歇式条件下,于三隔室电渗析中碱性黑液的电渗析法再生的可行性。应用电渗析法分离黑液的有些资料是有用的,但关于应用中性膜的资料很少。

关键词：染整碱性黑液电渗析法废液处理

Towards sustainable agriculture:Harnessing AI for global food security

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Artificial Intelligence in Agriculture 2024年第2期12卷 72-84页

作者： Dhananjay k.Pandey Richa mishra Amity Institute of Biotechnology Amity University JharkhandRanchi 835303India ICFAI University JharkhandRanchi 835222India

The issue of food security continues to be a prominent global concern,affecting a significant number of individ-uals who experience the adverse effects of hunger and *** finding of a solution of this intricate issue necessitates the implementation of novel and paradigm-shifting methodologies in agriculture and food *** recent times,the domain of artificial intelligence(AI)has emerged as a potent tool capable of instigating a profound influence on the agriculture and food *** technologies provide significant advantages by opti-mizing crop cultivation practices,enabling the use of predictive modelling and precision agriculture techniques,and aiding efficient crop monitoring and disease ***,AI has the potential to optimize sup-ply chain operations,storage management,transportation systems,and quality assurance *** also tackles the problem of food loss and waste through post-harvest loss reduction,predictive analytics,and smart inventory *** study highlights that how by utilizing the power of AI,we could transform the way we produce,distribute,and manage food,ultimately creating a more secure and sustainable future for all.

关键词： Global food security Artificial intelligence Crop improvement Food supply chain Sustainable resource management Food loss and waste

Performance and combustion study of a low heat rejection engine running with biogas–diethyl ether–diesel

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Waste Disposal and Sustainable Energy 2024年第1期6卷 151-162页

作者： Sanjaya.k.mishra Premananda Pradhan Shakti P.Jena Department of Mechanical Engineering S‘O’A Deemed to be UniversityBhubaneswar751030India

The present research focuses on addressing the faster depletion of fossil fuels and environmental pollution in addition to the energy crisis that hinders the progress of a *** the current research,waste banana leaves were considered as substrates for biogas *** is taken as the primary fuel in dual fuel(DF)operations to maximize possible diesel *** performance and combustion assessment were executed in a low heat rejection(LHR)engine using 5%diethyl ether by volume blended with diesel(5DEE)as pilot *** combustion attributes of the engine reveal that the apex of net heat release rate(NHRR)curve retarded a bit as compared to apex of base *** peak cylinder pressure was noted to be 6.19 MPa in the LHR engine running with 5DEE+biogas at 11.7°crank angle(CA)after top dead center(aTDC)compared to 5.23 MPa for the diesel alone operation at the same *** apex point for NHRR was observed to be 54.51 J(°)^(−1)for 5DEE+biogas in LHR engine positioned at 3.2°*** brake thermal efficiency at full engine load operation decreased by 12.7%and 5.2%for biogas substitutions of 0.8 kg h^(−1)with diesel and 5DEE,respectively,compared to the base *** smoke opacity and nitric oxide emissions were reduced during the DF run accompanied by diethyl ether as a fuel additive.

关键词： Biogas Banana leaves Coating Diesel engine Diethyl ether Exhaust emissions

Effect of in ovo feeding of xylobiose and xylotriose on plasma immunoglobulin, cecal metabolites production, microbial ecology, and metabolic pathways in broiler chickens

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Journal of Animal Science and Biotechnology 2024年第4期15卷 1578-1589页

作者： Razib Das Pravin mishra Birendra mishra Rajesh Jha Department of Human Nutrition Food and Animal SciencesCollege of Tropical Agriculture and Human ResourcesUniversity of Hawaii at ManoaHonoluluHI 96822USA

Background Dietary supplementation of xylooligosac charides(XOS) has been found to influence gut health by manipulating cecal microbiota and producing microbe-origin *** no study investigated and compared the effect of in ovo feeding of xylobiose(XOS2) and xy lotriose(XOS3) in *** study investigated the effect of in ovo feeding of these XOS compounds on post-hatch gut health parameters in chickens.A total of 144 fertilized chicken eggs were divided into three groups:a) non-injected control(CON),b) XOS2,and c) *** the 17^(th) embryonic day,the eggs of the XOS2 and XOS3 groups were injected with 3 mg of XOS2 and XOS3 diluted in 0.5 mL of 0.85% normal saline through the amniotic *** hatching,the chicks were raised for 21 *** was collected on d 14 to measure plasma *** digests were collected for measuring short-chain fatty acids(SCFA) on d 14 and 21,and for microbial ecology and microbial metabolic pathway analyses on d 7 and *** The results were considered significantly different at Pkens,revealing no differences among the *** chromatography results showed no significant differences in the concentrations of cecal SCFAs on d 14 but significant differences on d ***;the SCFA concentrations were lower in the XOS3 than in the CON group on d *** cecal metagenomics data showed that the abundance of the family Clostridiaceae significantly decreased on d 7,and the abundance of the family Oscillospiraceae increased on d 21 in the XOS2 compared to the *** was a reduction in the relative abundance of genus Clostridium sense stricto 1 in the XOS2 compared to the CON on d 7 and the genus Ruminococcus,torques in both XOS2 and XOS3 groups compared to the CON on d *** XOS2 and XOS3 groups reduced the genes for chondroitin sulfate degradation Ⅰ and L-histidine degradation Ⅰpathways,which contribute to improved gut health,respectivelyc in the micr

关键词： Broiler In ovo Metagenomics Prebiotic Xylooligosaccharides