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Propulsion and Power Research 2019年第4期8卷 339-350页

作者： M.K.nayak J.Prakash D.Tripathi V.S.Pandey Department of Physics IHSESiksha"O"Anusandhan Deemed to be UniversityBhubaneswar751003OdishaIndia Department of Mathematics Avvaiyar Government College for WomenKaraikal609602Puducherry-U.T.India Department of Mathematics National Institute of TechnologyUttarakhand246174India Department of Physics National Institute of Technology DelhiNew DelhiIndia

A numerical simulation is presented to investigate the effect of an exponentially varying magnetic field on three dimensional flow of Zinc Oxide-Society of Automotive Engineers 50 nanolubricant(ZnO-SAE50nano-lubricant)past a stretching *** the impact of homogenous and heterogeneous reactions on the flow of nanolubricant concerned has also taken into *** study has been strengthened by introducing the convection mechanism and the effect of thermal *** transformations are employed to transform the set of partial governing equations into the set of ordinary differential *** suitable boundary conditions are used to obtain the numerical *** numerical results are simulated using Matlab bvp4c solver and validated with the existing *** flow characteristics,thermal characteristics,nanoparticle concentration and some non-dimensional numbers are computed under the influence of the pertinent *** valuable outcome of the current study is that augmented magnetic field strength is the root cause of diminishing axial as well as transverse velocities and growing trend of fluid ***,the coeffi-cients of homogenous and heterogeneous reactions are boons for ascending concentration boundary layer.

关键词： MHD 3D flow ZnO-SAE50nanolubricant Exponential stretching sheet Convective heating mechanism Thermal radiation Heat generation/absorption

Industrial Unsustainability

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Journal of Geoscience and Environment Protection 2015年第4期3卷 16-23页

作者： Aparna nayak University of Idaho Boise ID USA

The development of unconventional gas exploration in the USA, in particular shale gas, caused a revolution in the American and the global gas markets. The regional-wide use of unconventional gas resources could stabilize the natural gas demand and the energy supply security of European and Asian countries. but traditionally, almost all gas contracts in Europe and Asia are linked to oil because of the demand for stable, long-term contracts. Furthermore, in many Asian countries, large state-owned enterprises dominate their national gas markets, leading to little competition and incentives to reduce gas prices. In Europe, the expansion of unconventional gas is facing grassroots opposition from environmental groups who are concerned about ground water safety, adequate waste water management, seismic events and greenhouse gas emissions. In this article, I will discuss the rapidly changing natural gas markets and the role and prospects of unconventional gas as well as its environmental impacts and unsustainability in industry level.

关键词： Hydro Fracking Natural Gas Industries Unsustainability Sustainable Industries

bioleaching of copper from pre and post thermally activated low grade chalcopyrite contained ball mill spillage

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Frontiers of Environmental Science & Engineering 2013年第2期7卷 281-293页

作者： Sandeep PANDA Nilotoala PRADHAN Umaballav MOHAPATRA Sandeep K. PANDA Swagat S.RATH Danda S. RAO bansi D. nayak Lala b. SUKLA barada K. MISHRA CSIR-Institute of Minerals and Materials Technology Bhubaneswar 751013 India Department of botany North Orissa University Baripada 757003 India Regional Center of Central Tuber Crops Research Institute Bhubaneswar 751019 India

bioleaching of a low grade chalcopyrite （ball mill spillage material） was tested for copper recovery in shake flasks. The original samples （as received） were thermally activated （600℃, 30 min） to notice the change in physico-chemical and mineralogical characteristics of the host rock and subsequently its effect on copper recovery. A mixed culture of acidophilic chemolithotrophic bacterial consortium predominantly entailing Acidithiobacillus fer- rooxidans strain was used for bioleaching studies and optimization of process parameters of both original and thermally activated samples. Mineralogical characteriza- tion studies indicated the presence of chalcopyrite, pyrite in the silicate matrix of the granitic rock. Field emission scanning electron microscopy coupled with Energy dispersive spectroscopy （FESEM-EDS） and X-ray Fluor- escence （XRF） analysis indicated mostly SiO2. With pH 2, pulp density 10% w/v, inoculum 10% v/v, temperature 30~C, 150 ***-~, 49% copper could be recovered in 30 days from the finest particle size （- 1 ~ 0.75 mm） of the original spillage sample. Under similar conditions 95% copper could be recovered from the thermally activated sample with the same size fraction in 10 days. The study revealed that thermal activation leads to volume expansion in the rock with the development of cracks, micro and macro pores on its surface, thereby enabling bacterial solution to penetrate more easily into the body, facilitating enhanced copper dissolution.

关键词： ball mill spillage thermal activation bioleaching copper

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Clean India

Journal of Geoscience and Environment Protection 2015年第5期3卷 133-139页

作者： Aparna nayak University of Idaho Boise USA

Mahatma Gandhi was mindful of the poor position of Indian rural people at that time and he dreamt of a cleaner India, where he emphasized on cleanliness and sanitation as an intact function of surviving. President Pranab Mukherjee in his address to Parliament in June 2014, said, “For ensuring hygiene, waste management and sanitation across the nation a “Swachh bharat Mission” will be established. This will be our tribute to Mahatma Gandhi on his 150th birth anniversary to be celebrated in the year 2019”. The Narendra Modi Government will shortly establish the “Swachh bharat” movement to solve the sanitation problem in India, to solve the problem of waste management and make India a clean state, ensuring hygiene all across the nation. Emphasizing “Clean India” on August 15, 2014 in his Independence Day speech, the Prime Minister said that this trend is linked with the economic activity of the state. This missionary work for creating a clean India will be launched on October 2, 2014, the birth anniversary of Mahatma Gandhi with the objective of completing the mission in 2019, the 150th birth anniversary of the father of the country.

关键词： Waste Clean India Developing Countries Solid Waste Waste Management

Growth, Metabolism and Yield of Rice Cultivated in Soils Amended with Fly Ash and Cyanobacteria and Metal Loads in Plant Parts

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Rice science 2016年第1期23卷 22-32页

作者： Rabindra N.PADHY Nabakishore nayak Rajesh R.DASH-MOHINI Shakti RATH Rajani K.SAHU Department of botany and biotechnology Buxi Jagabandhu Bidyadhar Autonomous College Central Research Laboratory Institute of Medical Sciences & Sum HospitalSiksha ‘O' Anusandhan University

Soil amendment with fly ash（FA） and combined supplementation with N_2-fixing cyanobacteria masses as biofertilizer were done in field experiments with rice. Amendments with FA levels, 0, 0.5, 1.0, 2.0, 4.0, 8.0 and 10.0 kg/m2, caused increase in growth and yield of rice up to 8.0 kg/m2, monitored with several parameters. Pigment contents and enzyme activities of leaves were enhanced by FA, with the maximum level of FA at 10.0 kg/m2. Protein content of rice seeds was the highest in plants grown at FA level 4.0 kg/m2. basic soil properties, p H value, percentage of silt, percentage of clay, water-holding capacity, electrical conductivity, cation exchange capacity, and organic carbon content increased due to the FA amendment. Parallel supplementation of FA amended plots with 1.0 kg/m2 N_2-fixing cyanobacteria mass caused further significant increments of the most soil properties, and rice growth and yield parameters. 1000-grain weight of rice plants grown at FA level 4.0 kg/m2 along with cyanobacteria supplementation was the maximum. Cyanobacteria supplementation caused increase of important basic properties of soil including the total N-content. Estimations of elemental content in soils and plant parts（root and seed） were done by the atomic absorption spectrophotometry. Accumulations of K, P, Fe and several plant micronutrients（Mn, Ni, Co, Zn and Cu） and toxic elements（Pb, Cr and Cd） increased in soils and plant parts as a function of the FA gradation, but Na content remained almost unchanged in soils and seeds. Supplementation of cyanobacteria had ameliorating effect on toxic metal contents of soils and plant parts. The FA level 4.0 kg/m2, with 1.0 kg/m2 cyanobacteria mass supplementation, could be taken ideal, since there would be recharging of the soil with essential micronutrients as well as toxic chemicals in comparative lesser proportions, and cyanobacteria mass would cause lessening toxic metal loads with usual N_2-fixation.

关键词： soil property cyanobacteria fly ash growth heavy metal rice toxic element yield

Synthesis and Characterization of Soy Protein Isolate/MMT Nanocomposite Film for the Control Release of the Drug Ofloxacin

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World Journal of Nano Science and Engineering 2011年第2期1卷 27-36页

作者： Preetishree nayak Sanjib Kumar Sahoo Anamika behera Prativa Kumari Nanda P.L. nayak b.C. Guru 不详

Nanocomposites were prepared by blending soy protein isolate with different percentage of MMT by melt extrusion technique. The nanocomposites were characterized by using, XRD, TEM, SEM and TGA methods. The XRD studies indicated the absence of diffraction peaks for the bio-nanocomposites. From the TEM studies it was ascertained that the degree of exfoliation increased with increase in MMT content. The morphology of the nanocomposites was ascertained from the SEM studies. The degradation pattern of the nano-composites was evaluated from the TG analysis. The drug delivery system of the nanocmposites was investigated by blending the nanocomposites with ofloxacin at different pH media. The various kinetic parameters were evaluated and the mechanism of drug delivery has been postulated based on the kinetic data.

关键词： Nanocomposites Soy Protein MMT Drug Delivery Ofloxacin

Life cycle greenhouse gas emissions from five contrasting rice production systems in the tropics

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Pedosphere 2023年第6期33卷 960-971页

作者： Pradeep K.DASH Pratap bHATTACHARYYA Soumya R.PADHY Amaresh K.nayak Annie POONAM Sangita MOHANTY Crop Production Division Indian Council of Agriculture Research(ICAR)-National Rice Research Institute(NRRI)GuttackOdisha 753006India

Carbon footprint (CF) quantification of major rice production systems (RPSs) is a prerequisite for developing strategies for climate change mitigation in agriculture. Total life cycle greenhouse gas emissions (LC-GHGs) from rice production to consumption might provide precise CFs for RPSs. Therefore, we assessed three segments (pre-farm, on-farm, and post-farm) of LC-GHGs under five major contrasting RPSs, i.e., aerobic rice (AR), shallow lowland rice(SLR), system of rice intensification (SRI), deep water rice (DWR), and zero-tilled direct-seeded rice (ZTR), in India to determine the corresponding *** footprint was the lowest for ZTR, while LC-GHGs were the lowest for AR. Therefore, AR is an adequate option for short-term reduction of GHG emissions. However, ZTR might be promoted by incentives as a long-term strategy. Among segmental LC-GHGs, on-farm GHG emissions contributed less than the other two segmental GHG emissions. The post-farm (i.e., farm gate to consumption) segment contributed the largest proportion (54%–69%) of total LC-GHGs, followed by pre-farm (i.e., cradle to farm) segment (21%–27%) and on-farm operation (11%–23%). These findings suggest that post-farm components that contribute to maximum GHG emissions must be scientifically tackled with proactive policy initiatives. However, the data of this segment are limited and scattered. Therefore, real-time assessment of GHG emissions during post-farm operation and input transportation from cradle to farm requires more precise quantification. Although CF in SRI was higher, this system had the potential to achieve higher yields and better soil carbon storage. Therefore,SRI may be encouraged from the perspectives of food security and long-term sustainability by reducing GHG emissions by three to four times.

关键词： carbon-equivalent emission carbon footprint climate change mitigation global warming management practice soil carbon stock:

Artificial intelligence in perioperative management of major gastrointestinal surgeries

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World Journal of Gastroenterology 2021年第21期27卷 2758-2770页

作者： Sohan Lal Solanki Saneya Pandrowala Abhirup nayak Manish bhandare Reshma P Ambulkar Shailesh V Shrikhande Department of Anesthesiology Critical Care and PainTata Memorial HospitalHomi Bhabha National InstituteMumbai 400012MaharashtraIndia Gastro-Intestinal Services Department of Surgical OncologyTata Memorial HospitalHomi Bhabha National InstituteMumbai 400012MaharashtraIndia

Artificial intelligence(AI)demonstrated by machines is based on reinforcement learning and revolves around the usage of *** purpose of this review was to summarize concepts,the scope,applications,and limitations in major gastrointestinal *** is a narrative review of the available literature on the key capabilities of AI to help anesthesiologists,surgeons,and other physicians to understand and critically evaluate ongoing and new AI applications in perioperative *** uses available databases called“big data”to formulate an *** of other data based on these algorithms can help in early diagnosis,accurate risk assessment,intraoperative management,automated drug delivery,predicting anesthesia and surgical complications and postoperative outcomes and can thus lead to effective perioperative management as well as to reduce the cost of *** physicians,anesthesiologists,and surgeons are well-positioned to help integrate AI into modern surgical *** all need to partner and collaborate with data scientists to collect and analyze data across all phases of perioperative care to provide clinical scenarios and *** implementation and use of AI along with real-time human interpretation will revolutionize perioperative care,and is the way forward in future perioperative management of major surgery.

关键词： Algorithms Artificial intelligence big data Data management Machine learning Perioperative care

Systematic study of the(n,2n)reaction cross section for^(121)Sb and^(123)Sb isotopes

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Chinese Physics C 2022年第5期46卷 77-94页

作者： R.K.Singh N.L.Singh R.D.Chauhan Mayur Mehta S.V.Suryanarayana Rajnikant Makwana b.K.nayak H.Naik Tarak Nath Nag K.Katovsky Department of Physics Faculty of Sciencethe M.S.University of BarodaVadodara-390002INDIA Department of Physics Netaji Subhas University of TechnologyDwarkaNew Delhi-110078INDIA Institute for Plasma Research Gandhinagar-382428INDIA Nuclear Physics Division Bhabha Atomic Research CentreMumbaiINDIA Radiochemistry Division Bhabha Atomic Research CentreMumbaiINDIA Department of Electrical Power Engineering Brno University of TechnologyBrno-61600Czech Republic

The cross sections of the^(121)Sb(n,2n)^(120)Sb^(m) and ^(123)Sb(n,2n)^(122)Sb reactions were measured at 12.50,15.79 and 18.87 MeV neutron energies relative to the standard ^(27)Al(n,α)^(24)Na monitor reaction using neutron activation and offline γ-ray *** of the samples was performed at the bARC-TIFR Pelletron Linac Facility,Mumbai,*** quasi-monoenergetic neutrons were generated via the ^(7)Li(p,n)*** model calculations were performed by nuclear reaction codes TALYS(ver.1.9)and EMPIRE(ver.3.2.2)using various input parameters and nuclear level density *** cross sections of the ground and the isomeric state as well as the isomeric cross section ratio were studied theoretically from reaction threshold to 26 MeV *** effect of pre-equilibrium emission is also discussed in detail using different theoretical *** present measured cross sections were discussed and compared with the reported experimental data and evaluation data of the JEFF-3.3,ENDF/b-VIII.0,JENDL/AD-2017 and TENDL-2019 libraries.A detailed analysis of the uncertainties in the measured cross section data was performed using the covariance analysis ***,a systematic study of the(n,2n)reaction cross section for^(121)Sb and^(123)Sb isotopes was also performed within 14-15 MeV neutron energies using various systematic *** work helps to overcome discrepancies in Sb data and illustrate a better understanding of pre-equilibrium emission in the(n,2n)reaction channel.

关键词： antimony (n,2n)reaction cross section 7Li(p,n)reaction neutron source neutron activation and offlineγ-ray spectrometry systematic formulae covariance analysis TALYS(ver.1.9)and EMPIRE(ver.3.2.2)codes

Chronic hepatitis E–an emerging disease in an immunocompromised host

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Gastroenterology Report 2018年第2期6卷 152-155,I0003页

作者： Amitabh Singh Rachna Seth Anand Gupta Shalimar baibaswata nayak Subrat kumar Acharya Prasenjit Das Department of Paediatrics All India Institute of Medical SciencesNew DelhiIndia Department of Gastroenterology All India Institute of Medical SciencesNew DelhiIndia Department of Pathology All India Institute of Medical SciencesNew DelhiIndia

Chronic hepatitis E virus(HEV)infection is increasingly being reported in immunosuppressed individuals with HIV,patients with haematological malignancy and transplant *** diagnosis of cirrhosis and liver failure post chronic HEV is controversial due to lack of standard diagnostic *** treatment benefits of ribavirin in chronic HEV of genotype 1 are not well *** report a case of chronic HEV infection of genotype 1 leading to chronic liver disease in a child cured of acute *** report also highlights the successful use of ribavirin for eradicating chronic HEV infection and its subsequent survival *** hepatitis E may be an emerging disease of immunosuppressed patients and should be suspected in the presence of cryptogenic *** is an effective therapy for controlling HEV.

关键词： chronic hepatitis E immunosuppression chronic liver disease ribavirin