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M Cheralathan - One of the best experts on this subject based on the ideXlab platform.
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influence of alumina oxide nanoparticles on the performance and emissions in a methyl ester of Neem Oil fuelled direct injection diesel engine
Thermal Science, 2017Co-Authors: G Balaji, M CheralathanAbstract:The experimental investigation of the influence of alumina oxide (Al2O3) nano additive on performance and emissions in a methyl ester of Neem Oil fuelled direct injection diesel engine is reported in this paper. The alumina oxide nanoparticles are mixed in various proportions (100 to 300 ppm) with methyl ester of Neem Oil. The performance and emissions are tested in a single cylinder computerized, 4-stroke, stationary, water-cooled diesel engine of 3.5 kW rated power. Results show that the nano additive is effective in increasing the performance and controlling the NO emissions of methyl ester of Neem Oil fueled diesel engines.
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The effect of antioxidant additives with methyl ester of Neem Oil on the oxidation stability
Energy Sources Part A-recovery Utilization and Environmental Effects, 2016Co-Authors: G Balaji, M CheralathanAbstract:ABSTRACTBiodiesel as an alternative to diesel fuel prepared from vegetable Oils or animal fats has attracted more and more attention because of its renewability and environment-friendly nature. But biodiesel undergoes oxidation and degenerates more quickly than mineral diesel. This problem needs to be addressed to increase the biodiesel usage. In this paper, the experimental investigation on the effect of antioxidant additives on the oxidation stability of a methyl ester of Neem Oil (MENO) was reported. The antioxidant additive is mixed in various proportions (100–400 ppm) with MENO. The oxidation stability was tested in the Rancimat apparatus. Results show that the antioxidant additive is effective in increasing the oxidation stability of MENO.
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simultaneous reduction of nox and hc emissions in a ci engine fueled with methyl ester of Neem Oil using ethylenediamine as antioxidant additive
Energy Sources Part A-recovery Utilization and Environmental Effects, 2015Co-Authors: G Balaji, M CheralathanAbstract:Biodiesel offers cleaner combustion over conventional diesel fuel, including reduced particulate matter, carbon monoxide, and unburned hydrocarbon emissions. However, several studies point to an increase in NOx emissions for biodiesel fuel compared with conventional diesel fuel. In this article, the experimental investigation of the effect of antioxidant additive (ethylenediamine) on NOx and HC emissions in a methyl ester of Neem Oil fueled direct-injection diesel engine has been reported. The antioxidant additive is mixed in various proportions with methyl ester of Neem Oil and was tested in a computerized four-stroke water-cooled single-cylinder diesel engine of 3.5 kW rated power. Results show that the antioxidant additive is effective in controlling the NOx and HC emissions of methyl ester of Neem Oil fueled diesel engines.
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Experimental investigation of antioxidant effect on oxidation stability and emissions in a methyl ester of Neem Oil fueled DI diesel engine
Renewable Energy, 2015Co-Authors: G Balaji, M CheralathanAbstract:In this paper, the experimental investigation of the effect of antioxidant additive (A-tocopherol acetate) on oxidation stability and NOx emissions in a methyl ester of Neem Oil fueled direct injection diesel engine has been reported. The antioxidant additive is mixed in various proportions (100-400 ppm) with methyl ester of Neem Oil. The oxidation stability was tested in Rancimat apparatus and emissions, performance in a computerized 4-stroke water-cooled single cylinder diesel engine of 3.5 kW rated power. Results show that the antioxidant additive is effective in increasing the oxidation stability and in controlling the NOx emissions of methyl ester of Neem Oil fueled diesel engines. However, HC, CO, smoke emissions and brake specific energy consumption were found to have increased by the addition of antioxidants.
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Study of antioxidant effect on oxidation stability and emissions in a methyl ester of Neem Oil fuelled DI diesel engine
Journal of The Energy Institute, 2014Co-Authors: G Balaji, M CheralathanAbstract:Abstract Biodiesel as an alternative diesel fuel prepared from vegetable Oils or animal fats has attracted more and more attention because of its renewable and environmental-friendly nature. But biodiesel undergoes oxidation and degenerate more quickly than mineral diesel. Further several studies report NO x emissions increases for biodiesel fuel compared with conventional diesel fuel. In this paper, the experimental investigation of the effect of antioxidant additive (Butylated hydroxytoluene) on oxidation stability and NO x emissions in a methyl ester of Neem Oil fuelled direct injection diesel engine has been reported. The antioxidant additive is mixed in various proportions (100–400 ppm) with methyl ester of Neem Oil. The oxidation stability was tested in Rancimat apparatus and emissions, performance in a computerized 4-stroke water-cooled single cylinder diesel engine of 3.5 kW rated power. Results show that the antioxidant additive is effective in increasing the oxidation stability and in controlling the NO x emissions of methyl ester of Neem Oil fuelled diesel engines.
Silva, Rafael R. - One of the best experts on this subject based on the ideXlab platform.
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Toxicity of Neem Oil to the cassava green mite Mononychellus tanajoa (Bondar) (Acari: Tetranychidae)
Instituto de Investigaciones Agropecuarias INIA, 2013Co-Authors: Silva, Amanda C.b., RÊgo A. S., Oliveira, Eugênio E., Teodoro Adenir, Silva, Rafael R.Abstract:Neem ( Azadirachta indica A. Juss.)-derived pesticides have been used against a wide range of agricultural pests including tetranychid mites. Approaches combining lethal and sublethal toxicity studies of Neem pesticides towards tetranychid mites are necessary to a comprehensive evaluation of such products. Here, we evaluated the lethal and sublethal toxicity of the Neem Oil BioNeem to the cassava green mite Mononychellus tanajoa (Bondar) by integrating lethal concentration (LC) with population growth and biological parameter studies. According to Probit analyses the concentration of Neem Oil BioNeem which kills 50% of the population (LC50) of M. tanajoa was 3.28 μL cm-2, which is roughly twice the field concentration recommended of this biopesticide to control pest mites (1.7 μL cm-2). The growth rate of the cassava green mite steadily decreased with dosages of Neem Oil. Furthermore, sublethal concentrations of the Neem Oil corresponding to the LC50 reduced the periods of the immature stages of M. tanajoa resulting in a shorter developmental time. Similarly, the number of eggs per day and the number of eggs per female per day, a proxy for fecundity, were drastically reduced in M. tanajoa females exposed to the LC50 of Neem Oil. Based on our comprehensive approach we conclude that the Neem Oil showed lethal as well as sublethal toxicity on growth rate and biological parameters such as duration of immature stages and fecundity of the cassava green mite M. tanajoa and it could be used as an ecological alternative for the management of this pest
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Toxicity of Neem Oil to the cassava green mite Mononychellus tanajoa (Bondar) (Acari: Tetranychidae)
Chilean journal of agricultural research, 2013Co-Authors: Oliveira, Eugênio E., RÊgo A. S., Silva, Amanda C.b., Teodoro Adenir, Silva, Rafael R.Abstract:O artigo não contém o resumo português.Neem (Azadirachta indica A. Juss.)-derived pesticides have been used against a wide range of agricultural pests including tetranychid mites. Approaches combining lethal and sublethal toxicity studies of Neem pesticides towards tetranychid mites are necessary to a comprehensive evaluation of such products. Here, we evaluated the lethal and sublethal toxicity of the Neem Oil BioNeem to the cassava green mite Mononychellus tanajoa (Bondar) by integrating lethal concentration (LC) with population growth and biological parameter studies. According to Probit analyses the concentration of Neem Oil BioNeem which kills 50% of the population (LC50) of M. tanajoa was 3.28 μL cm^-2, which is roughly twice the field concentration recommended of this biopesticide to control pest mites (1.7 μL cm^-2). The growth rate of the cassava green mite steadily decreased with dosages of Neem Oil. Furthermore, sublethal concentrations of the Neem Oil corresponding to the LC50 reduced the periods of the immature stages of M. tanajoa resulting in a shorter developmental time. Similarly, the number of eggs per day and the number of eggs per female per day, a proxy for fecundity, were drastically reduced in M. tanajoa females exposed to the LC50 of Neem Oil. Based on our comprehensive approach we conclude that the Neem Oil showed lethal as well as sublethal toxicity on growth rate and biological parameters such as duration of immature stages and fecundity of the cassava green mite M. tanajoa and it could be used as an ecological alternative for the management of this pest
Annunziata Giangaspero - One of the best experts on this subject based on the ideXlab platform.
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efficacy of a novel Neem Oil formulation rp03 to control the poultry red mite dermanyssus gallinae
Medical and Veterinary Entomology, 2018Co-Authors: Antonio Camarda, Nicola Pugliese, A Bevilacqua, Elena Circella, L Gradoni, David George, Olivier Sparagano, Annunziata GiangasperoAbstract:Dermanyssus gallinae (Mesostigmata: Dermanyssidae) is the most harmful ectoparasite of laying hens, represents an occupational hazard for poultry workers, and a growing threat to medical science per se. There is increasing demand for alternative products, including plant-derived acaricides, with which to control the mite. The present study investigated the efficacy of Neem Oil against D. gallinae on a heavily infested commercial laying hen farm. A novel formulation of 20% Neem Oil, diluted from a 2400-p.p.m. azadirachtin-concentrated stock (RP03™), was administered by nebulization three times in 1 week. Using corrugated cardboard traps, mite density was monitored before, during and after treatment and results were statistically analysed. Mite populations in the treated block showed 94.65%, 99.64% and 99.80% reductions after the first, second and third product administrations, respectively. The rate of reduction of the mite population was significantly higher in the treated block (P < 0.001) compared with the control and buffer blocks. The results suggest the strong bioactivity of Neem, and specifically of the patented Neem-based formulation RP03™, against D. gallinae. The treatment was most effective in the 10 days following the first application and its effects persisted for over 2 months. Further studies will aim to overcome observed side effects of treatment represented by an Oily layer on equipment and eggs.
G Balaji - One of the best experts on this subject based on the ideXlab platform.
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influence of alumina oxide nanoparticles on the performance and emissions in a methyl ester of Neem Oil fuelled direct injection diesel engine
Thermal Science, 2017Co-Authors: G Balaji, M CheralathanAbstract:The experimental investigation of the influence of alumina oxide (Al2O3) nano additive on performance and emissions in a methyl ester of Neem Oil fuelled direct injection diesel engine is reported in this paper. The alumina oxide nanoparticles are mixed in various proportions (100 to 300 ppm) with methyl ester of Neem Oil. The performance and emissions are tested in a single cylinder computerized, 4-stroke, stationary, water-cooled diesel engine of 3.5 kW rated power. Results show that the nano additive is effective in increasing the performance and controlling the NO emissions of methyl ester of Neem Oil fueled diesel engines.
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The effect of antioxidant additives with methyl ester of Neem Oil on the oxidation stability
Energy Sources Part A-recovery Utilization and Environmental Effects, 2016Co-Authors: G Balaji, M CheralathanAbstract:ABSTRACTBiodiesel as an alternative to diesel fuel prepared from vegetable Oils or animal fats has attracted more and more attention because of its renewability and environment-friendly nature. But biodiesel undergoes oxidation and degenerates more quickly than mineral diesel. This problem needs to be addressed to increase the biodiesel usage. In this paper, the experimental investigation on the effect of antioxidant additives on the oxidation stability of a methyl ester of Neem Oil (MENO) was reported. The antioxidant additive is mixed in various proportions (100–400 ppm) with MENO. The oxidation stability was tested in the Rancimat apparatus. Results show that the antioxidant additive is effective in increasing the oxidation stability of MENO.
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simultaneous reduction of nox and hc emissions in a ci engine fueled with methyl ester of Neem Oil using ethylenediamine as antioxidant additive
Energy Sources Part A-recovery Utilization and Environmental Effects, 2015Co-Authors: G Balaji, M CheralathanAbstract:Biodiesel offers cleaner combustion over conventional diesel fuel, including reduced particulate matter, carbon monoxide, and unburned hydrocarbon emissions. However, several studies point to an increase in NOx emissions for biodiesel fuel compared with conventional diesel fuel. In this article, the experimental investigation of the effect of antioxidant additive (ethylenediamine) on NOx and HC emissions in a methyl ester of Neem Oil fueled direct-injection diesel engine has been reported. The antioxidant additive is mixed in various proportions with methyl ester of Neem Oil and was tested in a computerized four-stroke water-cooled single-cylinder diesel engine of 3.5 kW rated power. Results show that the antioxidant additive is effective in controlling the NOx and HC emissions of methyl ester of Neem Oil fueled diesel engines.
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Experimental investigation of antioxidant effect on oxidation stability and emissions in a methyl ester of Neem Oil fueled DI diesel engine
Renewable Energy, 2015Co-Authors: G Balaji, M CheralathanAbstract:In this paper, the experimental investigation of the effect of antioxidant additive (A-tocopherol acetate) on oxidation stability and NOx emissions in a methyl ester of Neem Oil fueled direct injection diesel engine has been reported. The antioxidant additive is mixed in various proportions (100-400 ppm) with methyl ester of Neem Oil. The oxidation stability was tested in Rancimat apparatus and emissions, performance in a computerized 4-stroke water-cooled single cylinder diesel engine of 3.5 kW rated power. Results show that the antioxidant additive is effective in increasing the oxidation stability and in controlling the NOx emissions of methyl ester of Neem Oil fueled diesel engines. However, HC, CO, smoke emissions and brake specific energy consumption were found to have increased by the addition of antioxidants.
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Study of antioxidant effect on oxidation stability and emissions in a methyl ester of Neem Oil fuelled DI diesel engine
Journal of The Energy Institute, 2014Co-Authors: G Balaji, M CheralathanAbstract:Abstract Biodiesel as an alternative diesel fuel prepared from vegetable Oils or animal fats has attracted more and more attention because of its renewable and environmental-friendly nature. But biodiesel undergoes oxidation and degenerate more quickly than mineral diesel. Further several studies report NO x emissions increases for biodiesel fuel compared with conventional diesel fuel. In this paper, the experimental investigation of the effect of antioxidant additive (Butylated hydroxytoluene) on oxidation stability and NO x emissions in a methyl ester of Neem Oil fuelled direct injection diesel engine has been reported. The antioxidant additive is mixed in various proportions (100–400 ppm) with methyl ester of Neem Oil. The oxidation stability was tested in Rancimat apparatus and emissions, performance in a computerized 4-stroke water-cooled single cylinder diesel engine of 3.5 kW rated power. Results show that the antioxidant additive is effective in increasing the oxidation stability and in controlling the NO x emissions of methyl ester of Neem Oil fuelled diesel engines.
Natarajan Chandrasekaran - One of the best experts on this subject based on the ideXlab platform.
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probing the interaction of Neem Oil based nanoemulsion with bovine and human serum albumins using multiple spectroscopic techniques
Journal of Molecular Liquids, 2015Co-Authors: Gajalakshmi Sekar, Amitava Mukherjee, A Sivakumar, Natarajan ChandrasekaranAbstract:Abstract Increasing knowledge on the biomedical applications of nanoemulsions has necessitated the fundamental understanding behind protein–nanoemulsion interaction. Spectroscopic studies on the binding strategies of biomolecules with serum albumins have been routine for many years to elucidate their binding mechanism cum conformational changes. In the present study, we have investigated the effect of Neem Oil nanoemulsion of different concentration towards bovine and human serum albumin. Spectroscopic methods such as fluorescence emission, synchronous and three-dimensional spectra, UV–Visible spectroscopy, FTIR and circular dichroism techniques were used. Decrease in fluorescence intensity and controversial hyper-chromicity observed in the UV–Visible spectra of albumins confirmed the ground state complex formation between Neem Oil nanoemulsion and protein fluorophores. Complex attained remains non-fluorescence and static. Reduced intensity of the peak 1 and peak 2 regions of three-dimensional spectra have recommended the possible effect of nanoemulsion towards the aromatic micro-environment of tryptophan and tyrosine residues. Minor shifts observed in the amide frequency of the FTIR bands at around 1600 cm − 1 corresponds to the possibilities of variation in the secondary alpha-helical structures of biomolecules on interface with nanoemulsion. Decrease in the far UV-CD absorbance cum shift in the dichoric band of molecules at 208 and 222 nm has proportionate the loss of alpha-helical structures. Prominent changes observed in the near UV-CD spectra of biomolecules have also suggested the possible alterations towards tryptophan residues of peptide backbone.
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biodegradable polymer based encapsulation of Neem Oil nanoemulsion for controlled release of aza a
Carbohydrate Polymers, 2012Co-Authors: Jayakumar Jerobin, R S Sureshkumar, C H Anjali, Amitava Mukherjee, Natarajan ChandrasekaranAbstract:Azadirachtin a biological compound found in Neem have medicinal and pesticidal properties. The present work reports on the encapsulation of Neem Oil nanoemulsion using sodium alginate (Na-Alg) by cross linking with glutaraldehyde. Starch and polyethylene glycol (PEG) were used as coating agents for smooth surface of beads. The SEM images showed beads exhibited nearly spherical shape. Swelling of the polymeric beads reduced with coating which in turn decreased the rate of release of Aza-A. Starch coated encapsulation of Neem Oil nanoemulsion was found to be effective when compared to PEG coated encapsulation of Neem Oil nanoemulsion. The release rate of Neem Aza-A from the beads into an aqueous environment was analyzed by UV-visible spectrophotometer (214 nm). The encapsulated Neem Oil nanoemulsion have the potential for controlled release of Aza-A. Neem Oil nanoemulsion encapsulated beads coated with PEG was found to be toxic in lymphocyte cells.
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Neem Oil azadirachta indica nanoemulsion a potent larvicidal agent against culex quinquefasciatus
Pest Management Science, 2012Co-Authors: C H Anjali, Amitava Mukherjee, Yamini Sharma, Natarajan ChandrasekaranAbstract:BACKGROUND: Nanoemulsion composed of Neem Oil and non-ionic surfactant Tween 20, with a mean droplet size ranging from 31.03 to 251.43 nm, was formulated for various concentrations of the Oil and surfactant. The larvicidal effect of the formulated Neem Oil nanoemulsion was checked against Culex quinquefasciatus. RESULTS: O/W emulsion was prepared using Neem Oil, Tween 20 and water. Nanoemulsion of 31.03 nm size was obtained at a 1:3 ratio of Oil and surfactant, and it was found to be stable. The larger droplet size (251.43 nm) shifted to a smaller size of 31.03 nm with increase in the concentration of Tween 20. The viscosity of the nanoemulsion increased with increasing concentration of Tween 20. The lethal concentration (LC50) of the nanoemulsion against Cx. quinquefasciatus was checked for 1:0.30, 1:1.5 and 1:3 ratios of Oil and surfactant respectively. The LC50 decreased with droplet size. The LC50 for the ratio 1:3 nanoemulsions was 11.75 mg L−1. CONCLUSION: The formulated nanoemulsion of 31.03 nm size was found to be an effective larvicidal agent. This is the first time that a Neem Oil nanoemulsion of this droplet size has been reported. It may be a good choice as a potent and selective larvicide for Cx. quinquefasciatus. Copyright © 2011 Society of Chemical Industry
